fix: 포트 충돌 회피 — note_bridge 8098, intent_service 8099

Jellyfin(8096), OrbStack(8097) 포트 충돌으로 변경.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.venv/lib/python3.9/site-packages/lxml/ElementInclude.py

@@ -0,0 +1,244 @@
+#
+# ElementTree
+# $Id: ElementInclude.py 1862 2004-06-18 07:31:02Z Fredrik $
+#
+# limited xinclude support for element trees
+#
+# history:
+# 2003-08-15 fl   created
+# 2003-11-14 fl   fixed default loader
+#
+# Copyright (c) 2003-2004 by Fredrik Lundh.  All rights reserved.
+#
+# fredrik@pythonware.com
+# http://www.pythonware.com
+#
+# --------------------------------------------------------------------
+# The ElementTree toolkit is
+#
+# Copyright (c) 1999-2004 by Fredrik Lundh
+#
+# By obtaining, using, and/or copying this software and/or its
+# associated documentation, you agree that you have read, understood,
+# and will comply with the following terms and conditions:
+#
+# Permission to use, copy, modify, and distribute this software and
+# its associated documentation for any purpose and without fee is
+# hereby granted, provided that the above copyright notice appears in
+# all copies, and that both that copyright notice and this permission
+# notice appear in supporting documentation, and that the name of
+# Secret Labs AB or the author not be used in advertising or publicity
+# pertaining to distribution of the software without specific, written
+# prior permission.
+#
+# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
+# ABILITY AND FITNESS.  IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
+# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+# --------------------------------------------------------------------
+
+"""
+Limited XInclude support for the ElementTree package.
+
+While lxml.etree has full support for XInclude (see
+`etree.ElementTree.xinclude()`), this module provides a simpler, pure
+Python, ElementTree compatible implementation that supports a simple
+form of custom URL resolvers.
+"""
+
+from lxml import etree
+try:
+    from urlparse import urljoin
+    from urllib2 import urlopen
+except ImportError:
+    # Python 3
+    from urllib.parse import urljoin
+    from urllib.request import urlopen
+
+XINCLUDE = "{http://www.w3.org/2001/XInclude}"
+
+XINCLUDE_INCLUDE = XINCLUDE + "include"
+XINCLUDE_FALLBACK = XINCLUDE + "fallback"
+XINCLUDE_ITER_TAG = XINCLUDE + "*"
+
+# For security reasons, the inclusion depth is limited to this read-only value by default.
+DEFAULT_MAX_INCLUSION_DEPTH = 6
+
+
+##
+# Fatal include error.
+
+class FatalIncludeError(etree.LxmlSyntaxError):
+    pass
+
+
+class LimitedRecursiveIncludeError(FatalIncludeError):
+    pass
+
+
+##
+# ET compatible default loader.
+# This loader reads an included resource from disk.
+#
+# @param href Resource reference.
+# @param parse Parse mode.  Either "xml" or "text".
+# @param encoding Optional text encoding.
+# @return The expanded resource.  If the parse mode is "xml", this
+#    is an ElementTree instance.  If the parse mode is "text", this
+#    is a Unicode string.  If the loader fails, it can return None
+#    or raise an IOError exception.
+# @throws IOError If the loader fails to load the resource.
+
+def default_loader(href, parse, encoding=None):
+    file = open(href, 'rb')
+    if parse == "xml":
+        data = etree.parse(file).getroot()
+    else:
+        data = file.read()
+        if not encoding:
+            encoding = 'utf-8'
+        data = data.decode(encoding)
+    file.close()
+    return data
+
+
+##
+# Default loader used by lxml.etree - handles custom resolvers properly
+# 
+
+def _lxml_default_loader(href, parse, encoding=None, parser=None):
+    if parse == "xml":
+        data = etree.parse(href, parser).getroot()
+    else:
+        if "://" in href:
+            f = urlopen(href)
+        else:
+            f = open(href, 'rb')
+        data = f.read()
+        f.close()
+        if not encoding:
+            encoding = 'utf-8'
+        data = data.decode(encoding)
+    return data
+
+
+##
+# Wrapper for ET compatibility - drops the parser
+
+def _wrap_et_loader(loader):
+    def load(href, parse, encoding=None, parser=None):
+        return loader(href, parse, encoding)
+    return load
+
+
+##
+# Expand XInclude directives.
+#
+# @param elem Root element.
+# @param loader Optional resource loader.  If omitted, it defaults
+#     to {@link default_loader}.  If given, it should be a callable
+#     that implements the same interface as <b>default_loader</b>.
+# @param base_url The base URL of the original file, to resolve
+#     relative include file references.
+# @param max_depth The maximum number of recursive inclusions.
+#     Limited to reduce the risk of malicious content explosion.
+#     Pass None to disable the limitation.
+# @throws LimitedRecursiveIncludeError If the {@link max_depth} was exceeded.
+# @throws FatalIncludeError If the function fails to include a given
+#     resource, or if the tree contains malformed XInclude elements.
+# @throws IOError If the function fails to load a given resource.
+# @returns the node or its replacement if it was an XInclude node
+
+def include(elem, loader=None, base_url=None,
+            max_depth=DEFAULT_MAX_INCLUSION_DEPTH):
+    if max_depth is None:
+        max_depth = -1
+    elif max_depth < 0:
+        raise ValueError("expected non-negative depth or None for 'max_depth', got %r" % max_depth)
+
+    if base_url is None:
+        if hasattr(elem, 'getroot'):
+            tree = elem
+            elem = elem.getroot()
+        else:
+            tree = elem.getroottree()
+        if hasattr(tree, 'docinfo'):
+            base_url = tree.docinfo.URL
+    elif hasattr(elem, 'getroot'):
+        elem = elem.getroot()
+    _include(elem, loader, base_url, max_depth)
+
+
+def _include(elem, loader=None, base_url=None,
+             max_depth=DEFAULT_MAX_INCLUSION_DEPTH, _parent_hrefs=None):
+    if loader is not None:
+        load_include = _wrap_et_loader(loader)
+    else:
+        load_include = _lxml_default_loader
+
+    if _parent_hrefs is None:
+        _parent_hrefs = set()
+
+    parser = elem.getroottree().parser
+
+    include_elements = list(
+        elem.iter(XINCLUDE_ITER_TAG))
+
+    for e in include_elements:
+        if e.tag == XINCLUDE_INCLUDE:
+            # process xinclude directive
+            href = urljoin(base_url, e.get("href"))
+            parse = e.get("parse", "xml")
+            parent = e.getparent()
+            if parse == "xml":
+                if href in _parent_hrefs:
+                    raise FatalIncludeError(
+                        "recursive include of %r detected" % href
+                        )
+                if max_depth == 0:
+                    raise LimitedRecursiveIncludeError(
+                        "maximum xinclude depth reached when including file %s" % href)
+                node = load_include(href, parse, parser=parser)
+                if node is None:
+                    raise FatalIncludeError(
+                        "cannot load %r as %r" % (href, parse)
+                        )
+                node = _include(node, loader, href, max_depth - 1, {href} | _parent_hrefs)
+                if e.tail:
+                    node.tail = (node.tail or "") + e.tail
+                if parent is None:
+                    return node # replaced the root node!
+                parent.replace(e, node)
+            elif parse == "text":
+                text = load_include(href, parse, encoding=e.get("encoding"))
+                if text is None:
+                    raise FatalIncludeError(
+                        "cannot load %r as %r" % (href, parse)
+                        )
+                predecessor = e.getprevious()
+                if predecessor is not None:
+                    predecessor.tail = (predecessor.tail or "") + text
+                elif parent is None:
+                    return text # replaced the root node!
+                else:
+                    parent.text = (parent.text or "") + text + (e.tail or "")
+                parent.remove(e)
+            else:
+                raise FatalIncludeError(
+                    "unknown parse type in xi:include tag (%r)" % parse
+                )
+        elif e.tag == XINCLUDE_FALLBACK:
+            parent = e.getparent()
+            if parent is not None and parent.tag != XINCLUDE_INCLUDE:
+                raise FatalIncludeError(
+                    "xi:fallback tag must be child of xi:include (%r)" % e.tag
+                    )
+        else:
+            raise FatalIncludeError(
+                "Invalid element found in XInclude namespace (%r)" % e.tag
+                )
+    return elem

.venv/lib/python3.9/site-packages/lxml/__init__.py

@@ -0,0 +1,22 @@
+# this is a package
+
+__version__ = "6.0.2"
+
+
+def get_include():
+    """
+    Returns a list of header include paths (for lxml itself, libxml2
+    and libxslt) needed to compile C code against lxml if it was built
+    with statically linked libraries.
+    """
+    import os
+    lxml_path = __path__[0]
+    include_path = os.path.join(lxml_path, 'includes')
+    includes = [include_path, lxml_path]
+
+    for name in os.listdir(include_path):
+        path = os.path.join(include_path, name)
+        if os.path.isdir(path):
+            includes.append(path)
+
+    return includes

.venv/lib/python3.9/site-packages/lxml/_elementpath.py

@@ -0,0 +1,343 @@
+# cython: language_level=3
+
+#
+# ElementTree
+# $Id: ElementPath.py 3375 2008-02-13 08:05:08Z fredrik $
+#
+# limited xpath support for element trees
+#
+# history:
+# 2003-05-23 fl   created
+# 2003-05-28 fl   added support for // etc
+# 2003-08-27 fl   fixed parsing of periods in element names
+# 2007-09-10 fl   new selection engine
+# 2007-09-12 fl   fixed parent selector
+# 2007-09-13 fl   added iterfind; changed findall to return a list
+# 2007-11-30 fl   added namespaces support
+# 2009-10-30 fl   added child element value filter
+#
+# Copyright (c) 2003-2009 by Fredrik Lundh.  All rights reserved.
+#
+# fredrik@pythonware.com
+# http://www.pythonware.com
+#
+# --------------------------------------------------------------------
+# The ElementTree toolkit is
+#
+# Copyright (c) 1999-2009 by Fredrik Lundh
+#
+# By obtaining, using, and/or copying this software and/or its
+# associated documentation, you agree that you have read, understood,
+# and will comply with the following terms and conditions:
+#
+# Permission to use, copy, modify, and distribute this software and
+# its associated documentation for any purpose and without fee is
+# hereby granted, provided that the above copyright notice appears in
+# all copies, and that both that copyright notice and this permission
+# notice appear in supporting documentation, and that the name of
+# Secret Labs AB or the author not be used in advertising or publicity
+# pertaining to distribution of the software without specific, written
+# prior permission.
+#
+# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
+# ABILITY AND FITNESS.  IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
+# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+# --------------------------------------------------------------------
+
+##
+# Implementation module for XPath support.  There's usually no reason
+# to import this module directly; the <b>ElementTree</b> does this for
+# you, if needed.
+##
+
+
+import re
+
+xpath_tokenizer_re = re.compile(
+    "("
+    "'[^']*'|\"[^\"]*\"|"
+    "::|"
+    "//?|"
+    r"\.\.|"
+    r"\(\)|"
+    r"[/.*:\[\]\(\)@=])|"
+    r"((?:\{[^}]+\})?[^/\[\]\(\)@=\s]+)|"
+    r"\s+"
+    )
+
+def xpath_tokenizer(pattern, namespaces=None, with_prefixes=True):
+    # ElementTree uses '', lxml used None originally.
+    default_namespace = (namespaces.get(None) or namespaces.get('')) if namespaces else None
+    parsing_attribute = False
+    for token in xpath_tokenizer_re.findall(pattern):
+        ttype, tag = token
+        if tag and tag[0] != "{":
+            if ":" in tag and with_prefixes:
+                prefix, uri = tag.split(":", 1)
+                try:
+                    if not namespaces:
+                        raise KeyError
+                    yield ttype, "{%s}%s" % (namespaces[prefix], uri)
+                except KeyError:
+                    raise SyntaxError("prefix %r not found in prefix map" % prefix)
+            elif tag.isdecimal():
+                yield token  # index
+            elif default_namespace and not parsing_attribute:
+                yield ttype, "{%s}%s" % (default_namespace, tag)
+            else:
+                yield token
+            parsing_attribute = False
+        else:
+            yield token
+            parsing_attribute = ttype == '@'
+
+
+def prepare_child(next, token):
+    tag = token[1]
+    def select(result):
+        for elem in result:
+            yield from elem.iterchildren(tag)
+    return select
+
+def prepare_star(next, token):
+    def select(result):
+        for elem in result:
+            yield from elem.iterchildren('*')
+    return select
+
+def prepare_self(next, token):
+    def select(result):
+        return result
+    return select
+
+def prepare_descendant(next, token):
+    token = next()
+    if token[0] == "*":
+        tag = "*"
+    elif not token[0]:
+        tag = token[1]
+    else:
+        raise SyntaxError("invalid descendant")
+    def select(result):
+        for elem in result:
+            yield from elem.iterdescendants(tag)
+    return select
+
+def prepare_parent(next, token):
+    def select(result):
+        for elem in result:
+            parent = elem.getparent()
+            if parent is not None:
+                yield parent
+    return select
+
+def prepare_predicate(next, token):
+    # FIXME: replace with real parser!!! refs:
+    # http://effbot.org/zone/simple-iterator-parser.htm
+    # http://javascript.crockford.com/tdop/tdop.html
+    signature = ''
+    predicate = []
+    while 1:
+        token = next()
+        if token[0] == "]":
+            break
+        if token == ('', ''):
+            # ignore whitespace
+            continue
+        if token[0] and token[0][:1] in "'\"":
+            token = "'", token[0][1:-1]
+        signature += token[0] or "-"
+        predicate.append(token[1])
+
+    # use signature to determine predicate type
+    if signature == "@-":
+        # [@attribute] predicate
+        key = predicate[1]
+        def select(result):
+            for elem in result:
+                if elem.get(key) is not None:
+                    yield elem
+        return select
+    if signature == "@-='":
+        # [@attribute='value']
+        key = predicate[1]
+        value = predicate[-1]
+        def select(result):
+            for elem in result:
+                if elem.get(key) == value:
+                    yield elem
+        return select
+    if signature == "-" and not re.match(r"-?\d+$", predicate[0]):
+        # [tag]
+        tag = predicate[0]
+        def select(result):
+            for elem in result:
+                for _ in elem.iterchildren(tag):
+                    yield elem
+                    break
+        return select
+    if signature == ".='" or (signature == "-='" and not re.match(r"-?\d+$", predicate[0])):
+        # [.='value'] or [tag='value']
+        tag = predicate[0]
+        value = predicate[-1]
+        if tag:
+            def select(result):
+                for elem in result:
+                    for e in elem.iterchildren(tag):
+                        if "".join(e.itertext()) == value:
+                            yield elem
+                            break
+        else:
+            def select(result):
+                for elem in result:
+                    if "".join(elem.itertext()) == value:
+                        yield elem
+        return select
+    if signature == "-" or signature == "-()" or signature == "-()-":
+        # [index] or [last()] or [last()-index]
+        if signature == "-":
+            # [index]
+            index = int(predicate[0]) - 1
+            if index < 0:
+                if index == -1:
+                    raise SyntaxError(
+                        "indices in path predicates are 1-based, not 0-based")
+                else:
+                    raise SyntaxError("path index >= 1 expected")
+        else:
+            if predicate[0] != "last":
+                raise SyntaxError("unsupported function")
+            if signature == "-()-":
+                try:
+                    index = int(predicate[2]) - 1
+                except ValueError:
+                    raise SyntaxError("unsupported expression")
+            else:
+                index = -1
+        def select(result):
+            for elem in result:
+                parent = elem.getparent()
+                if parent is None:
+                    continue
+                try:
+                    # FIXME: what if the selector is "*" ?
+                    elems = list(parent.iterchildren(elem.tag))
+                    if elems[index] is elem:
+                        yield elem
+                except IndexError:
+                    pass
+        return select
+    raise SyntaxError("invalid predicate")
+
+ops = {
+    "": prepare_child,
+    "*": prepare_star,
+    ".": prepare_self,
+    "..": prepare_parent,
+    "//": prepare_descendant,
+    "[": prepare_predicate,
+}
+
+
+# --------------------------------------------------------------------
+
+_cache = {}
+
+
+def _build_path_iterator(path, namespaces, with_prefixes=True):
+    """compile selector pattern"""
+    if path[-1:] == "/":
+        path += "*"  # implicit all (FIXME: keep this?)
+
+    cache_key = (path,)
+    if namespaces:
+        # lxml originally used None for the default namespace but ElementTree uses the
+        # more convenient (all-strings-dict) empty string, so we support both here,
+        # preferring the more convenient '', as long as they aren't ambiguous.
+        if None in namespaces:
+            if '' in namespaces and namespaces[None] != namespaces['']:
+                raise ValueError("Ambiguous default namespace provided: %r versus %r" % (
+                    namespaces[None], namespaces['']))
+            cache_key += (namespaces[None],) + tuple(sorted(
+                item for item in namespaces.items() if item[0] is not None))
+        else:
+            cache_key += tuple(sorted(namespaces.items()))
+
+    try:
+        return _cache[cache_key]
+    except KeyError:
+        pass
+    if len(_cache) > 100:
+        _cache.clear()
+
+    if path[:1] == "/":
+        raise SyntaxError("cannot use absolute path on element")
+    stream = iter(xpath_tokenizer(path, namespaces, with_prefixes=with_prefixes))
+    try:
+        _next = stream.next
+    except AttributeError:
+        # Python 3
+        _next = stream.__next__
+    try:
+        token = _next()
+    except StopIteration:
+        raise SyntaxError("empty path expression")
+    selector = []
+    while 1:
+        try:
+            selector.append(ops[token[0]](_next, token))
+        except StopIteration:
+            raise SyntaxError("invalid path")
+        try:
+            token = _next()
+            if token[0] == "/":
+                token = _next()
+        except StopIteration:
+            break
+    _cache[cache_key] = selector
+    return selector
+
+
+##
+# Iterate over the matching nodes
+
+def iterfind(elem, path, namespaces=None, with_prefixes=True):
+    selector = _build_path_iterator(path, namespaces, with_prefixes=with_prefixes)
+    result = iter((elem,))
+    for select in selector:
+        result = select(result)
+    return result
+
+
+##
+# Find first matching object.
+
+def find(elem, path, namespaces=None, with_prefixes=True):
+    it = iterfind(elem, path, namespaces, with_prefixes=with_prefixes)
+    try:
+        return next(it)
+    except StopIteration:
+        return None
+
+
+##
+# Find all matching objects.
+
+def findall(elem, path, namespaces=None, with_prefixes=True):
+    return list(iterfind(elem, path, namespaces))
+
+
+##
+# Find text for first matching object.
+
+def findtext(elem, path, default=None, namespaces=None, with_prefixes=True):
+    el = find(elem, path, namespaces, with_prefixes=with_prefixes)
+    if el is None:
+        return default
+    else:
+        return el.text or ''

.venv/lib/python3.9/site-packages/lxml/builder.py

@@ -0,0 +1,243 @@
+# cython: language_level=2
+
+#
+# Element generator factory by Fredrik Lundh.
+#
+# Source:
+#    http://online.effbot.org/2006_11_01_archive.htm#et-builder
+#    http://effbot.python-hosting.com/file/stuff/sandbox/elementlib/builder.py
+#
+# --------------------------------------------------------------------
+# The ElementTree toolkit is
+#
+# Copyright (c) 1999-2004 by Fredrik Lundh
+#
+# By obtaining, using, and/or copying this software and/or its
+# associated documentation, you agree that you have read, understood,
+# and will comply with the following terms and conditions:
+#
+# Permission to use, copy, modify, and distribute this software and
+# its associated documentation for any purpose and without fee is
+# hereby granted, provided that the above copyright notice appears in
+# all copies, and that both that copyright notice and this permission
+# notice appear in supporting documentation, and that the name of
+# Secret Labs AB or the author not be used in advertising or publicity
+# pertaining to distribution of the software without specific, written
+# prior permission.
+#
+# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
+# ABILITY AND FITNESS.  IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
+# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+# --------------------------------------------------------------------
+
+"""
+The ``E`` Element factory for generating XML documents.
+"""
+
+
+import lxml.etree as ET
+_QName = ET.QName
+
+from functools import partial
+
+try:
+    from types import GenericAlias as _GenericAlias
+except ImportError:
+    # Python 3.8 - we only need this as return value from "__class_getitem__"
+    def _GenericAlias(cls, item):
+        return f"{cls.__name__}[{item.__name__}]"
+
+try:
+    basestring
+except NameError:
+    basestring = str
+
+try:
+    unicode
+except NameError:
+    unicode = str
+
+
+class ElementMaker:
+    """Element generator factory.
+
+    Unlike the ordinary Element factory, the E factory allows you to pass in
+    more than just a tag and some optional attributes; you can also pass in
+    text and other elements.  The text is added as either text or tail
+    attributes, and elements are inserted at the right spot.  Some small
+    examples::
+
+        >>> from lxml import etree as ET
+        >>> from lxml.builder import E
+
+        >>> ET.tostring(E("tag"))
+        '<tag/>'
+        >>> ET.tostring(E("tag", "text"))
+        '<tag>text</tag>'
+        >>> ET.tostring(E("tag", "text", key="value"))
+        '<tag key="value">text</tag>'
+        >>> ET.tostring(E("tag", E("subtag", "text"), "tail"))
+        '<tag><subtag>text</subtag>tail</tag>'
+
+    For simple tags, the factory also allows you to write ``E.tag(...)`` instead
+    of ``E('tag', ...)``::
+
+        >>> ET.tostring(E.tag())
+        '<tag/>'
+        >>> ET.tostring(E.tag("text"))
+        '<tag>text</tag>'
+        >>> ET.tostring(E.tag(E.subtag("text"), "tail"))
+        '<tag><subtag>text</subtag>tail</tag>'
+
+    Here's a somewhat larger example; this shows how to generate HTML
+    documents, using a mix of prepared factory functions for inline elements,
+    nested ``E.tag`` calls, and embedded XHTML fragments::
+
+        # some common inline elements
+        A = E.a
+        I = E.i
+        B = E.b
+
+        def CLASS(v):
+            # helper function, 'class' is a reserved word
+            return {'class': v}
+
+        page = (
+            E.html(
+                E.head(
+                    E.title("This is a sample document")
+                ),
+                E.body(
+                    E.h1("Hello!", CLASS("title")),
+                    E.p("This is a paragraph with ", B("bold"), " text in it!"),
+                    E.p("This is another paragraph, with a ",
+                        A("link", href="http://www.python.org"), "."),
+                    E.p("Here are some reserved characters: <spam&egg>."),
+                    ET.XML("<p>And finally, here is an embedded XHTML fragment.</p>"),
+                )
+            )
+        )
+
+        print ET.tostring(page)
+
+    Here's a prettyprinted version of the output from the above script::
+
+        <html>
+          <head>
+            <title>This is a sample document</title>
+          </head>
+          <body>
+            <h1 class="title">Hello!</h1>
+            <p>This is a paragraph with <b>bold</b> text in it!</p>
+            <p>This is another paragraph, with <a href="http://www.python.org">link</a>.</p>
+            <p>Here are some reserved characters: &lt;spam&amp;egg&gt;.</p>
+            <p>And finally, here is an embedded XHTML fragment.</p>
+          </body>
+        </html>
+
+    For namespace support, you can pass a namespace map (``nsmap``)
+    and/or a specific target ``namespace`` to the ElementMaker class::
+
+        >>> E = ElementMaker(namespace="http://my.ns/")
+        >>> print(ET.tostring( E.test ))
+        <test xmlns="http://my.ns/"/>
+
+        >>> E = ElementMaker(namespace="http://my.ns/", nsmap={'p':'http://my.ns/'})
+        >>> print(ET.tostring( E.test ))
+        <p:test xmlns:p="http://my.ns/"/>
+    """
+
+    def __init__(self, typemap=None,
+                 namespace=None, nsmap=None, makeelement=None):
+        self._namespace = '{' + namespace + '}' if namespace is not None else None
+        self._nsmap = dict(nsmap) if nsmap else None
+
+        assert makeelement is None or callable(makeelement)
+        self._makeelement = makeelement if makeelement is not None else ET.Element
+
+        # initialize the default type map functions for this element factory
+        typemap = dict(typemap) if typemap else {}
+
+        def add_text(elem, item):
+            try:
+                last_child = elem[-1]
+            except IndexError:
+                elem.text = (elem.text or "") + item
+            else:
+                last_child.tail = (last_child.tail or "") + item
+
+        def add_cdata(elem, cdata):
+            if elem.text:
+                raise ValueError("Can't add a CDATA section. Element already has some text: %r" % elem.text)
+            elem.text = cdata
+
+        if str not in typemap:
+            typemap[str] = add_text
+        if unicode not in typemap:
+            typemap[unicode] = add_text
+        if ET.CDATA not in typemap:
+            typemap[ET.CDATA] = add_cdata
+
+        def add_dict(elem, item):
+            attrib = elem.attrib
+            for k, v in item.items():
+                if isinstance(v, basestring):
+                    attrib[k] = v
+                else:
+                    attrib[k] = typemap[type(v)](None, v)
+
+        if dict not in typemap:
+            typemap[dict] = add_dict
+
+        self._typemap = typemap
+
+    def __call__(self, tag, *children, **attrib):
+        typemap = self._typemap
+
+        # We'll usually get a 'str', and the compiled type check is very fast.
+        if not isinstance(tag, str) and isinstance(tag, _QName):
+            # A QName is explicitly qualified, do not look at self._namespace.
+            tag = tag.text
+        elif self._namespace is not None and tag[0] != '{':
+            tag = self._namespace + tag
+        elem = self._makeelement(tag, nsmap=self._nsmap)
+        if attrib:
+            typemap[dict](elem, attrib)
+
+        for item in children:
+            if callable(item):
+                item = item()
+            t = typemap.get(type(item))
+            if t is None:
+                if ET.iselement(item):
+                    elem.append(item)
+                    continue
+                for basetype in type(item).__mro__:
+                    # See if the typemap knows of any of this type's bases.
+                    t = typemap.get(basetype)
+                    if t is not None:
+                        break
+                else:
+                    raise TypeError("bad argument type: %s(%r)" %
+                                    (type(item).__name__, item))
+            v = t(elem, item)
+            if v:
+                typemap.get(type(v))(elem, v)
+
+        return elem
+
+    def __getattr__(self, tag):
+        return partial(self, tag)
+
+    # Allow subscripting ElementMaker in type annotions (PEP 560)
+    def __class_getitem__(cls, item):
+        return _GenericAlias(cls, item)
+
+
+# create factory object
+E = ElementMaker()

.venv/lib/python3.9/site-packages/lxml/classlookup.pxi

@@ -0,0 +1,580 @@
+# Configurable Element class lookup
+
+################################################################################
+# Custom Element classes
+
+cdef public class ElementBase(_Element) [ type LxmlElementBaseType,
+                                          object LxmlElementBase ]:
+    """ElementBase(*children, attrib=None, nsmap=None, **_extra)
+
+    The public Element class.  All custom Element classes must inherit
+    from this one.  To create an Element, use the `Element()` factory.
+
+    BIG FAT WARNING: Subclasses *must not* override __init__ or
+    __new__ as it is absolutely undefined when these objects will be
+    created or destroyed.  All persistent state of Elements must be
+    stored in the underlying XML.  If you really need to initialize
+    the object after creation, you can implement an ``_init(self)``
+    method that will be called directly after object creation.
+
+    Subclasses of this class can be instantiated to create a new
+    Element.  By default, the tag name will be the class name and the
+    namespace will be empty.  You can modify this with the following
+    class attributes:
+
+    * TAG - the tag name, possibly containing a namespace in Clark
+      notation
+
+    * NAMESPACE - the default namespace URI, unless provided as part
+      of the TAG attribute.
+
+    * HTML - flag if the class is an HTML tag, as opposed to an XML
+      tag.  This only applies to un-namespaced tags and defaults to
+      false (i.e. XML).
+
+    * PARSER - the parser that provides the configuration for the
+      newly created document.  Providing an HTML parser here will
+      default to creating an HTML element.
+
+    In user code, the latter three are commonly inherited in class
+    hierarchies that implement a common namespace.
+    """
+    def __init__(self, *children, attrib=None, nsmap=None, **_extra):
+        """ElementBase(*children, attrib=None, nsmap=None, **_extra)
+        """
+        cdef bint is_html = 0
+        cdef _BaseParser parser
+        cdef _Element last_child
+        # don't use normal attribute access as it might be overridden
+        _getattr = object.__getattribute__
+        try:
+            namespace = _utf8(_getattr(self, 'NAMESPACE'))
+        except AttributeError:
+            namespace = None
+        try:
+            ns, tag = _getNsTag(_getattr(self, 'TAG'))
+            if ns is not None:
+                namespace = ns
+        except AttributeError:
+            tag = _utf8(_getattr(_getattr(self, '__class__'), '__name__'))
+            if b'.' in tag:
+                tag = tag.split(b'.')[-1]
+        try:
+            parser = _getattr(self, 'PARSER')
+        except AttributeError:
+            parser = None
+            for child in children:
+                if isinstance(child, _Element):
+                    parser = (<_Element>child)._doc._parser
+                    break
+        if isinstance(parser, HTMLParser):
+            is_html = 1
+        if namespace is None:
+            try:
+                is_html = _getattr(self, 'HTML')
+            except AttributeError:
+                pass
+        _initNewElement(self, is_html, tag, namespace, parser,
+                        attrib, nsmap, _extra)
+        last_child = None
+        for child in children:
+            if _isString(child):
+                if last_child is None:
+                    _setNodeText(self._c_node,
+                                 (_collectText(self._c_node.children) or '') + child)
+                else:
+                    _setTailText(last_child._c_node,
+                                 (_collectText(last_child._c_node.next) or '') + child)
+            elif isinstance(child, _Element):
+                last_child = child
+                _appendChild(self, last_child)
+            elif isinstance(child, type) and issubclass(child, ElementBase):
+                last_child = child()
+                _appendChild(self, last_child)
+            else:
+                raise TypeError, f"Invalid child type: {type(child)!r}"
+
+cdef class CommentBase(_Comment):
+    """All custom Comment classes must inherit from this one.
+
+    To create an XML Comment instance, use the ``Comment()`` factory.
+
+    Subclasses *must not* override __init__ or __new__ as it is
+    absolutely undefined when these objects will be created or
+    destroyed.  All persistent state of Comments must be stored in the
+    underlying XML.  If you really need to initialize the object after
+    creation, you can implement an ``_init(self)`` method that will be
+    called after object creation.
+    """
+    def __init__(self, text):
+        # copied from Comment() factory
+        cdef _Document doc
+        cdef xmlDoc*   c_doc
+        if text is None:
+            text = b''
+        else:
+            text = _utf8(text)
+        c_doc = _newXMLDoc()
+        doc = _documentFactory(c_doc, None)
+        self._c_node = _createComment(c_doc, _xcstr(text))
+        if self._c_node is NULL:
+            raise MemoryError()
+        tree.xmlAddChild(<xmlNode*>c_doc, self._c_node)
+        _registerProxy(self, doc, self._c_node)
+        self._init()
+
+cdef class PIBase(_ProcessingInstruction):
+    """All custom Processing Instruction classes must inherit from this one.
+
+    To create an XML ProcessingInstruction instance, use the ``PI()``
+    factory.
+
+    Subclasses *must not* override __init__ or __new__ as it is
+    absolutely undefined when these objects will be created or
+    destroyed.  All persistent state of PIs must be stored in the
+    underlying XML.  If you really need to initialize the object after
+    creation, you can implement an ``_init(self)`` method that will be
+    called after object creation.
+    """
+    def __init__(self, target, text=None):
+        # copied from PI() factory
+        cdef _Document doc
+        cdef xmlDoc*   c_doc
+        target = _utf8(target)
+        if text is None:
+            text = b''
+        else:
+            text = _utf8(text)
+        c_doc = _newXMLDoc()
+        doc = _documentFactory(c_doc, None)
+        self._c_node = _createPI(c_doc, _xcstr(target), _xcstr(text))
+        if self._c_node is NULL:
+            raise MemoryError()
+        tree.xmlAddChild(<xmlNode*>c_doc, self._c_node)
+        _registerProxy(self, doc, self._c_node)
+        self._init()
+
+cdef class EntityBase(_Entity):
+    """All custom Entity classes must inherit from this one.
+
+    To create an XML Entity instance, use the ``Entity()`` factory.
+
+    Subclasses *must not* override __init__ or __new__ as it is
+    absolutely undefined when these objects will be created or
+    destroyed.  All persistent state of Entities must be stored in the
+    underlying XML.  If you really need to initialize the object after
+    creation, you can implement an ``_init(self)`` method that will be
+    called after object creation.
+    """
+    def __init__(self, name):
+        cdef _Document doc
+        cdef xmlDoc*   c_doc
+        name_utf = _utf8(name)
+        c_name = _xcstr(name_utf)
+        if c_name[0] == c'#':
+            if not _characterReferenceIsValid(c_name + 1):
+                raise ValueError, f"Invalid character reference: '{name}'"
+        elif not _xmlNameIsValid(c_name):
+            raise ValueError, f"Invalid entity reference: '{name}'"
+        c_doc = _newXMLDoc()
+        doc = _documentFactory(c_doc, None)
+        self._c_node = _createEntity(c_doc, c_name)
+        if self._c_node is NULL:
+            raise MemoryError()
+        tree.xmlAddChild(<xmlNode*>c_doc, self._c_node)
+        _registerProxy(self, doc, self._c_node)
+        self._init()
+
+
+cdef int _validateNodeClass(xmlNode* c_node, cls) except -1:
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        expected = ElementBase
+    elif c_node.type == tree.XML_COMMENT_NODE:
+        expected = CommentBase
+    elif c_node.type == tree.XML_ENTITY_REF_NODE:
+        expected = EntityBase
+    elif c_node.type == tree.XML_PI_NODE:
+        expected = PIBase
+    else:
+        assert False, f"Unknown node type: {c_node.type}"
+
+    if not (isinstance(cls, type) and issubclass(cls, expected)):
+        raise TypeError(
+            f"result of class lookup must be subclass of {type(expected)}, got {type(cls)}")
+    return 0
+
+
+################################################################################
+# Element class lookup
+
+ctypedef public object (*_element_class_lookup_function)(object, _Document, xmlNode*)
+
+# class to store element class lookup functions
+cdef public class ElementClassLookup [ type LxmlElementClassLookupType,
+                                       object LxmlElementClassLookup ]:
+    """ElementClassLookup(self)
+    Superclass of Element class lookups.
+    """
+    cdef _element_class_lookup_function _lookup_function
+
+
+cdef public class FallbackElementClassLookup(ElementClassLookup) \
+         [ type LxmlFallbackElementClassLookupType,
+           object LxmlFallbackElementClassLookup ]:
+    """FallbackElementClassLookup(self, fallback=None)
+
+    Superclass of Element class lookups with additional fallback.
+    """
+    cdef readonly ElementClassLookup fallback
+    cdef _element_class_lookup_function _fallback_function
+    def __cinit__(self):
+        # fall back to default lookup
+        self._fallback_function = _lookupDefaultElementClass
+
+    def __init__(self, ElementClassLookup fallback=None):
+        if fallback is not None:
+            self._setFallback(fallback)
+        else:
+            self._fallback_function = _lookupDefaultElementClass
+
+    cdef void _setFallback(self, ElementClassLookup lookup):
+        """Sets the fallback scheme for this lookup method.
+        """
+        self.fallback = lookup
+        self._fallback_function = lookup._lookup_function
+        if self._fallback_function is NULL:
+            self._fallback_function = _lookupDefaultElementClass
+
+    def set_fallback(self, ElementClassLookup lookup not None):
+        """set_fallback(self, lookup)
+
+        Sets the fallback scheme for this lookup method.
+        """
+        self._setFallback(lookup)
+
+cdef inline object _callLookupFallback(FallbackElementClassLookup lookup,
+                                       _Document doc, xmlNode* c_node):
+    return lookup._fallback_function(lookup.fallback, doc, c_node)
+
+
+################################################################################
+# default lookup scheme
+
+cdef class ElementDefaultClassLookup(ElementClassLookup):
+    """ElementDefaultClassLookup(self, element=None, comment=None, pi=None, entity=None)
+    Element class lookup scheme that always returns the default Element
+    class.
+
+    The keyword arguments ``element``, ``comment``, ``pi`` and ``entity``
+    accept the respective Element classes.
+    """
+    cdef readonly object element_class
+    cdef readonly object comment_class
+    cdef readonly object pi_class
+    cdef readonly object entity_class
+    def __cinit__(self):
+        self._lookup_function = _lookupDefaultElementClass
+
+    def __init__(self, element=None, comment=None, pi=None, entity=None):
+        if element is None:
+            self.element_class = _Element
+        elif issubclass(element, ElementBase):
+            self.element_class = element
+        else:
+            raise TypeError, "element class must be subclass of ElementBase"
+
+        if comment is None:
+            self.comment_class = _Comment
+        elif issubclass(comment, CommentBase):
+            self.comment_class = comment
+        else:
+            raise TypeError, "comment class must be subclass of CommentBase"
+
+        if entity is None:
+            self.entity_class = _Entity
+        elif issubclass(entity, EntityBase):
+            self.entity_class = entity
+        else:
+            raise TypeError, "Entity class must be subclass of EntityBase"
+
+        if pi is None:
+            self.pi_class = None # special case, see below
+        elif issubclass(pi, PIBase):
+            self.pi_class = pi
+        else:
+            raise TypeError, "PI class must be subclass of PIBase"
+
+cdef object _lookupDefaultElementClass(state, _Document _doc, xmlNode* c_node):
+    "Trivial class lookup function that always returns the default class."
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        if state is not None:
+            return (<ElementDefaultClassLookup>state).element_class
+        else:
+            return _Element
+    elif c_node.type == tree.XML_COMMENT_NODE:
+        if state is not None:
+            return (<ElementDefaultClassLookup>state).comment_class
+        else:
+            return _Comment
+    elif c_node.type == tree.XML_ENTITY_REF_NODE:
+        if state is not None:
+            return (<ElementDefaultClassLookup>state).entity_class
+        else:
+            return _Entity
+    elif c_node.type == tree.XML_PI_NODE:
+        if state is None or (<ElementDefaultClassLookup>state).pi_class is None:
+            # special case XSLT-PI
+            if c_node.name is not NULL and c_node.content is not NULL:
+                if tree.xmlStrcmp(c_node.name, <unsigned char*>"xml-stylesheet") == 0:
+                    if tree.xmlStrstr(c_node.content, <unsigned char*>"text/xsl") is not NULL or \
+                           tree.xmlStrstr(c_node.content, <unsigned char*>"text/xml") is not NULL:
+                        return _XSLTProcessingInstruction
+            return _ProcessingInstruction
+        else:
+            return (<ElementDefaultClassLookup>state).pi_class
+    else:
+        assert False, f"Unknown node type: {c_node.type}"
+
+
+################################################################################
+# attribute based lookup scheme
+
+cdef class AttributeBasedElementClassLookup(FallbackElementClassLookup):
+    """AttributeBasedElementClassLookup(self, attribute_name, class_mapping, fallback=None)
+    Checks an attribute of an Element and looks up the value in a
+    class dictionary.
+
+    Arguments:
+      - attribute name - '{ns}name' style string
+      - class mapping  - Python dict mapping attribute values to Element classes
+      - fallback       - optional fallback lookup mechanism
+
+    A None key in the class mapping will be checked if the attribute is
+    missing.
+    """
+    cdef object _class_mapping
+    cdef tuple _pytag
+    cdef const_xmlChar* _c_ns
+    cdef const_xmlChar* _c_name
+    def __cinit__(self):
+        self._lookup_function = _attribute_class_lookup
+
+    def __init__(self, attribute_name, class_mapping,
+                 ElementClassLookup fallback=None):
+        self._pytag = _getNsTag(attribute_name)
+        ns, name = self._pytag
+        if ns is None:
+            self._c_ns = NULL
+        else:
+            self._c_ns = _xcstr(ns)
+        self._c_name = _xcstr(name)
+        self._class_mapping = dict(class_mapping)
+
+        FallbackElementClassLookup.__init__(self, fallback)
+
+cdef object _attribute_class_lookup(state, _Document doc, xmlNode* c_node):
+    cdef AttributeBasedElementClassLookup lookup
+    cdef python.PyObject* dict_result
+
+    lookup = <AttributeBasedElementClassLookup>state
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        value = _attributeValueFromNsName(
+            c_node, lookup._c_ns, lookup._c_name)
+        dict_result = python.PyDict_GetItem(lookup._class_mapping, value)
+        if dict_result is not NULL:
+            cls = <object>dict_result
+            _validateNodeClass(c_node, cls)
+            return cls
+    return _callLookupFallback(lookup, doc, c_node)
+
+
+################################################################################
+#  per-parser lookup scheme
+
+cdef class ParserBasedElementClassLookup(FallbackElementClassLookup):
+    """ParserBasedElementClassLookup(self, fallback=None)
+    Element class lookup based on the XML parser.
+    """
+    def __cinit__(self):
+        self._lookup_function = _parser_class_lookup
+
+cdef object _parser_class_lookup(state, _Document doc, xmlNode* c_node):
+    if doc._parser._class_lookup is not None:
+        return doc._parser._class_lookup._lookup_function(
+            doc._parser._class_lookup, doc, c_node)
+    return _callLookupFallback(<FallbackElementClassLookup>state, doc, c_node)
+
+
+################################################################################
+#  custom class lookup based on node type, namespace, name
+
+cdef class CustomElementClassLookup(FallbackElementClassLookup):
+    """CustomElementClassLookup(self, fallback=None)
+    Element class lookup based on a subclass method.
+
+    You can inherit from this class and override the method::
+
+        lookup(self, type, doc, namespace, name)
+
+    to lookup the element class for a node. Arguments of the method:
+    * type:      one of 'element', 'comment', 'PI', 'entity'
+    * doc:       document that the node is in
+    * namespace: namespace URI of the node (or None for comments/PIs/entities)
+    * name:      name of the element/entity, None for comments, target for PIs
+
+    If you return None from this method, the fallback will be called.
+    """
+    def __cinit__(self):
+        self._lookup_function = _custom_class_lookup
+
+    def lookup(self, type, doc, namespace, name):
+        "lookup(self, type, doc, namespace, name)"
+        return None
+
+cdef object _custom_class_lookup(state, _Document doc, xmlNode* c_node):
+    cdef CustomElementClassLookup lookup
+
+    lookup = <CustomElementClassLookup>state
+
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        element_type = "element"
+    elif c_node.type == tree.XML_COMMENT_NODE:
+        element_type = "comment"
+    elif c_node.type == tree.XML_PI_NODE:
+        element_type = "PI"
+    elif c_node.type == tree.XML_ENTITY_REF_NODE:
+        element_type = "entity"
+    else:
+        element_type = "element"
+    if c_node.name is NULL:
+        name = None
+    else:
+        name = funicode(c_node.name)
+    c_str = tree._getNs(c_node)
+    ns = funicode(c_str) if c_str is not NULL else None
+
+    cls = lookup.lookup(element_type, doc, ns, name)
+    if cls is not None:
+        _validateNodeClass(c_node, cls)
+        return cls
+    return _callLookupFallback(lookup, doc, c_node)
+
+
+################################################################################
+# read-only tree based class lookup
+
+cdef class PythonElementClassLookup(FallbackElementClassLookup):
+    """PythonElementClassLookup(self, fallback=None)
+    Element class lookup based on a subclass method.
+
+    This class lookup scheme allows access to the entire XML tree in
+    read-only mode.  To use it, re-implement the ``lookup(self, doc,
+    root)`` method in a subclass::
+
+        from lxml import etree, pyclasslookup
+
+        class MyElementClass(etree.ElementBase):
+            honkey = True
+
+        class MyLookup(pyclasslookup.PythonElementClassLookup):
+            def lookup(self, doc, root):
+                if root.tag == "sometag":
+                    return MyElementClass
+                else:
+                    for child in root:
+                        if child.tag == "someothertag":
+                            return MyElementClass
+                # delegate to default
+                return None
+
+    If you return None from this method, the fallback will be called.
+
+    The first argument is the opaque document instance that contains
+    the Element.  The second argument is a lightweight Element proxy
+    implementation that is only valid during the lookup.  Do not try
+    to keep a reference to it.  Once the lookup is done, the proxy
+    will be invalid.
+
+    Also, you cannot wrap such a read-only Element in an ElementTree,
+    and you must take care not to keep a reference to them outside of
+    the `lookup()` method.
+
+    Note that the API of the Element objects is not complete.  It is
+    purely read-only and does not support all features of the normal
+    `lxml.etree` API (such as XPath, extended slicing or some
+    iteration methods).
+
+    See https://lxml.de/element_classes.html
+    """
+    def __cinit__(self):
+        self._lookup_function = _python_class_lookup
+
+    def lookup(self, doc, element):
+        """lookup(self, doc, element)
+
+        Override this method to implement your own lookup scheme.
+        """
+        return None
+
+cdef object _python_class_lookup(state, _Document doc, tree.xmlNode* c_node):
+    cdef PythonElementClassLookup lookup
+    cdef _ReadOnlyProxy proxy
+    lookup = <PythonElementClassLookup>state
+
+    proxy = _newReadOnlyProxy(None, c_node)
+    cls = lookup.lookup(doc, proxy)
+    _freeReadOnlyProxies(proxy)
+
+    if cls is not None:
+        _validateNodeClass(c_node, cls)
+        return cls
+    return _callLookupFallback(lookup, doc, c_node)
+
+################################################################################
+# Global setup
+
+cdef _element_class_lookup_function LOOKUP_ELEMENT_CLASS
+cdef object ELEMENT_CLASS_LOOKUP_STATE
+
+cdef void _setElementClassLookupFunction(
+    _element_class_lookup_function function, object state):
+    global LOOKUP_ELEMENT_CLASS, ELEMENT_CLASS_LOOKUP_STATE
+    if function is NULL:
+        state    = DEFAULT_ELEMENT_CLASS_LOOKUP
+        function = DEFAULT_ELEMENT_CLASS_LOOKUP._lookup_function
+
+    ELEMENT_CLASS_LOOKUP_STATE = state
+    LOOKUP_ELEMENT_CLASS = function
+
+def set_element_class_lookup(ElementClassLookup lookup = None):
+    """set_element_class_lookup(lookup = None)
+
+    Set the global element class lookup method.
+
+    This defines the main entry point for looking up element implementations.
+    The standard implementation uses the :class:`ParserBasedElementClassLookup`
+    to delegate to different lookup schemes for each parser. 
+
+    .. warning::
+
+        This should only be changed by applications, not by library packages.
+        In most cases, parser specific lookups should be preferred,
+        which can be configured via
+        :meth:`~lxml.etree.XMLParser.set_element_class_lookup`
+        (and the same for HTML parsers).
+
+        Globally replacing the element class lookup by something other than a
+        :class:`ParserBasedElementClassLookup` will prevent parser specific lookup
+        schemes from working. Several tools rely on parser specific lookups,
+        including :mod:`lxml.html` and :mod:`lxml.objectify`.
+    """
+    if lookup is None or lookup._lookup_function is NULL:
+        _setElementClassLookupFunction(NULL, None)
+    else:
+        _setElementClassLookupFunction(lookup._lookup_function, lookup)
+
+# default setup: parser delegation
+cdef ParserBasedElementClassLookup DEFAULT_ELEMENT_CLASS_LOOKUP
+DEFAULT_ELEMENT_CLASS_LOOKUP = ParserBasedElementClassLookup()
+
+set_element_class_lookup(DEFAULT_ELEMENT_CLASS_LOOKUP)

.venv/lib/python3.9/site-packages/lxml/cleanup.pxi

@@ -0,0 +1,215 @@
+# functions for tree cleanup and removing elements from subtrees
+
+def cleanup_namespaces(tree_or_element, top_nsmap=None, keep_ns_prefixes=None):
+    """cleanup_namespaces(tree_or_element, top_nsmap=None, keep_ns_prefixes=None)
+
+    Remove all namespace declarations from a subtree that are not used
+    by any of the elements or attributes in that tree.
+
+    If a 'top_nsmap' is provided, it must be a mapping from prefixes
+    to namespace URIs.  These namespaces will be declared on the top
+    element of the subtree before running the cleanup, which allows
+    moving namespace declarations to the top of the tree.
+
+    If a 'keep_ns_prefixes' is provided, it must be a list of prefixes.
+    These prefixes will not be removed as part of the cleanup.
+    """
+    element = _rootNodeOrRaise(tree_or_element)
+    c_element = element._c_node
+
+    if top_nsmap:
+        doc = element._doc
+        # declare namespaces from nsmap, then apply them to the subtree
+        _setNodeNamespaces(c_element, doc, None, top_nsmap)
+        moveNodeToDocument(doc, c_element.doc, c_element)
+
+    keep_ns_prefixes = (
+        set([_utf8(prefix) for prefix in keep_ns_prefixes])
+        if keep_ns_prefixes else None)
+
+    _removeUnusedNamespaceDeclarations(c_element, keep_ns_prefixes)
+
+
+def strip_attributes(tree_or_element, *attribute_names):
+    """strip_attributes(tree_or_element, *attribute_names)
+
+    Delete all attributes with the provided attribute names from an
+    Element (or ElementTree) and its descendants.
+
+    Attribute names can contain wildcards as in `_Element.iter`.
+
+    Example usage::
+
+        strip_attributes(root_element,
+                         'simpleattr',
+                         '{http://some/ns}attrname',
+                         '{http://other/ns}*')
+    """
+    cdef _MultiTagMatcher matcher
+    element = _rootNodeOrRaise(tree_or_element)
+    if not attribute_names:
+        return
+
+    matcher = _MultiTagMatcher.__new__(_MultiTagMatcher, attribute_names)
+    matcher.cacheTags(element._doc)
+    if matcher.rejectsAllAttributes():
+        return
+    _strip_attributes(element._c_node, matcher)
+
+
+cdef _strip_attributes(xmlNode* c_node, _MultiTagMatcher matcher):
+    cdef xmlAttr* c_attr
+    cdef xmlAttr* c_next_attr
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(c_node, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        c_attr = c_node.properties
+        while c_attr is not NULL:
+            c_next_attr = c_attr.next
+            if matcher.matchesAttribute(c_attr):
+                tree.xmlRemoveProp(c_attr)
+            c_attr = c_next_attr
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+
+
+def strip_elements(tree_or_element, *tag_names, bint with_tail=True):
+    """strip_elements(tree_or_element, *tag_names, with_tail=True)
+
+    Delete all elements with the provided tag names from a tree or
+    subtree.  This will remove the elements and their entire subtree,
+    including all their attributes, text content and descendants.  It
+    will also remove the tail text of the element unless you
+    explicitly set the ``with_tail`` keyword argument option to False.
+
+    Tag names can contain wildcards as in `_Element.iter`.
+
+    Note that this will not delete the element (or ElementTree root
+    element) that you passed even if it matches.  It will only treat
+    its descendants.  If you want to include the root element, check
+    its tag name directly before even calling this function.
+
+    Example usage::
+
+        strip_elements(some_element,
+            'simpletagname',             # non-namespaced tag
+            '{http://some/ns}tagname',   # namespaced tag
+            '{http://some/other/ns}*'    # any tag from a namespace
+            lxml.etree.Comment           # comments
+            )
+    """
+    cdef _MultiTagMatcher matcher
+    doc = _documentOrRaise(tree_or_element)
+    element = _rootNodeOrRaise(tree_or_element)
+    if not tag_names:
+        return
+
+    matcher = _MultiTagMatcher.__new__(_MultiTagMatcher, tag_names)
+    matcher.cacheTags(doc)
+    if matcher.rejectsAll():
+        return
+
+    if isinstance(tree_or_element, _ElementTree):
+        # include PIs and comments next to the root node
+        if matcher.matchesType(tree.XML_COMMENT_NODE):
+            _removeSiblings(element._c_node, tree.XML_COMMENT_NODE, with_tail)
+        if matcher.matchesType(tree.XML_PI_NODE):
+            _removeSiblings(element._c_node, tree.XML_PI_NODE, with_tail)
+    _strip_elements(doc, element._c_node, matcher, with_tail)
+
+cdef _strip_elements(_Document doc, xmlNode* c_node, _MultiTagMatcher matcher,
+                     bint with_tail):
+    cdef xmlNode* c_child
+    cdef xmlNode* c_next
+
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(c_node, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        # we run through the children here to prevent any problems
+        # with the tree iteration which would occur if we unlinked the
+        # c_node itself
+        c_child = _findChildForwards(c_node, 0)
+        while c_child is not NULL:
+            c_next = _nextElement(c_child)
+            if matcher.matches(c_child):
+                if c_child.type == tree.XML_ELEMENT_NODE:
+                    if not with_tail:
+                        tree.xmlUnlinkNode(c_child)
+                    _removeNode(doc, c_child)
+                else:
+                    if with_tail:
+                        _removeText(c_child.next)
+                    tree.xmlUnlinkNode(c_child)
+                    attemptDeallocation(c_child)
+            c_child = c_next
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+
+
+def strip_tags(tree_or_element, *tag_names):
+    """strip_tags(tree_or_element, *tag_names)
+
+    Delete all elements with the provided tag names from a tree or
+    subtree.  This will remove the elements and their attributes, but
+    *not* their text/tail content or descendants.  Instead, it will
+    merge the text content and children of the element into its
+    parent.
+
+    Tag names can contain wildcards as in `_Element.iter`.
+
+    Note that this will not delete the element (or ElementTree root
+    element) that you passed even if it matches.  It will only treat
+    its descendants.
+
+    Example usage::
+
+        strip_tags(some_element,
+            'simpletagname',             # non-namespaced tag
+            '{http://some/ns}tagname',   # namespaced tag
+            '{http://some/other/ns}*'    # any tag from a namespace
+            Comment                      # comments (including their text!)
+            )
+    """
+    cdef _MultiTagMatcher matcher
+    doc = _documentOrRaise(tree_or_element)
+    element = _rootNodeOrRaise(tree_or_element)
+    if not tag_names:
+        return
+
+    matcher = _MultiTagMatcher.__new__(_MultiTagMatcher, tag_names)
+    matcher.cacheTags(doc)
+    if matcher.rejectsAll():
+        return
+
+    if isinstance(tree_or_element, _ElementTree):
+        # include PIs and comments next to the root node
+        if matcher.matchesType(tree.XML_COMMENT_NODE):
+            _removeSiblings(element._c_node, tree.XML_COMMENT_NODE, 0)
+        if matcher.matchesType(tree.XML_PI_NODE):
+            _removeSiblings(element._c_node, tree.XML_PI_NODE, 0)
+    _strip_tags(doc, element._c_node, matcher)
+
+cdef _strip_tags(_Document doc, xmlNode* c_node, _MultiTagMatcher matcher):
+    cdef xmlNode* c_child
+    cdef xmlNode* c_next
+
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(c_node, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        # we run through the children here to prevent any problems
+        # with the tree iteration which would occur if we unlinked the
+        # c_node itself
+        c_child = _findChildForwards(c_node, 0)
+        while c_child is not NULL:
+            if not matcher.matches(c_child):
+                c_child = _nextElement(c_child)
+                continue
+            if c_child.type == tree.XML_ELEMENT_NODE:
+                c_next = _findChildForwards(c_child, 0) or _nextElement(c_child)
+                _replaceNodeByChildren(doc, c_child)
+                if not attemptDeallocation(c_child):
+                    if c_child.nsDef is not NULL:
+                        # make namespaces absolute
+                        moveNodeToDocument(doc, doc._c_doc, c_child)
+                c_child = c_next
+            else:
+                c_next = _nextElement(c_child)
+                tree.xmlUnlinkNode(c_child)
+                attemptDeallocation(c_child)
+                c_child = c_next
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)

.venv/lib/python3.9/site-packages/lxml/cssselect.py

@@ -0,0 +1,101 @@
+"""CSS Selectors based on XPath.
+
+This module supports selecting XML/HTML tags based on CSS selectors.
+See the `CSSSelector` class for details.
+
+This is a thin wrapper around cssselect 0.7 or later.
+"""
+
+
+from . import etree
+try:
+    import cssselect as external_cssselect
+except ImportError:
+    raise ImportError(
+        'cssselect does not seem to be installed. '
+        'See https://pypi.org/project/cssselect/')
+
+
+SelectorSyntaxError = external_cssselect.SelectorSyntaxError
+ExpressionError = external_cssselect.ExpressionError
+SelectorError = external_cssselect.SelectorError
+
+
+__all__ = ['SelectorSyntaxError', 'ExpressionError', 'SelectorError',
+           'CSSSelector']
+
+
+class LxmlTranslator(external_cssselect.GenericTranslator):
+    """
+    A custom CSS selector to XPath translator with lxml-specific extensions.
+    """
+    def xpath_contains_function(self, xpath, function):
+        # Defined there, removed in later drafts:
+        # http://www.w3.org/TR/2001/CR-css3-selectors-20011113/#content-selectors
+        if function.argument_types() not in (['STRING'], ['IDENT']):
+            raise ExpressionError(
+                "Expected a single string or ident for :contains(), got %r"
+                % function.arguments)
+        value = function.arguments[0].value
+        return xpath.add_condition(
+            'contains(__lxml_internal_css:lower-case(string(.)), %s)'
+            % self.xpath_literal(value.lower()))
+
+
+class LxmlHTMLTranslator(LxmlTranslator, external_cssselect.HTMLTranslator):
+    """
+    lxml extensions + HTML support.
+    """
+
+
+def _make_lower_case(context, s):
+    return s.lower()
+
+ns = etree.FunctionNamespace('http://codespeak.net/lxml/css/')
+ns.prefix = '__lxml_internal_css'
+ns['lower-case'] = _make_lower_case
+
+
+class CSSSelector(etree.XPath):
+    """A CSS selector.
+
+    Usage::
+
+        >>> from lxml import etree, cssselect
+        >>> select = cssselect.CSSSelector("a tag > child")
+
+        >>> root = etree.XML("<a><b><c/><tag><child>TEXT</child></tag></b></a>")
+        >>> [ el.tag for el in select(root) ]
+        ['child']
+
+    To use CSS namespaces, you need to pass a prefix-to-namespace
+    mapping as ``namespaces`` keyword argument::
+
+        >>> rdfns = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+        >>> select_ns = cssselect.CSSSelector('root > rdf|Description',
+        ...                                   namespaces={'rdf': rdfns})
+
+        >>> rdf = etree.XML((
+        ...     '<root xmlns:rdf="%s">'
+        ...       '<rdf:Description>blah</rdf:Description>'
+        ...     '</root>') % rdfns)
+        >>> [(el.tag, el.text) for el in select_ns(rdf)]
+        [('{http://www.w3.org/1999/02/22-rdf-syntax-ns#}Description', 'blah')]
+
+    """
+    def __init__(self, css, namespaces=None, translator='xml'):
+        if translator == 'xml':
+            translator = LxmlTranslator()
+        elif translator == 'html':
+            translator = LxmlHTMLTranslator()
+        elif translator == 'xhtml':
+            translator = LxmlHTMLTranslator(xhtml=True)
+        path = translator.css_to_xpath(css)
+        super().__init__(path, namespaces=namespaces)
+        self.css = css
+
+    def __repr__(self):
+        return '<%s %x for %r>' % (
+            self.__class__.__name__,
+            abs(id(self)),
+            self.css)

.venv/lib/python3.9/site-packages/lxml/debug.pxi

@@ -0,0 +1,36 @@
+@cython.final
+@cython.internal
+cdef class _MemDebug:
+    """Debugging support for the memory allocation in libxml2.
+    """
+    def bytes_used(self):
+        """bytes_used(self)
+
+        Returns the total amount of memory (in bytes) currently used by libxml2.
+        Note that libxml2 constrains this value to a C int, which limits
+        the accuracy on 64 bit systems.
+        """
+        return tree.xmlMemUsed()
+
+    def blocks_used(self):
+        """blocks_used(self)
+
+        Returns the total number of memory blocks currently allocated by libxml2.
+        Note that libxml2 constrains this value to a C int, which limits
+        the accuracy on 64 bit systems.
+        """
+        return tree.xmlMemBlocks()
+
+    def dict_size(self):
+        """dict_size(self)
+
+        Returns the current size of the global name dictionary used by libxml2
+        for the current thread.  Each thread has its own dictionary.
+        """
+        c_dict = __GLOBAL_PARSER_CONTEXT._getThreadDict(NULL)
+        if c_dict is NULL:
+            raise MemoryError()
+        return tree.xmlDictSize(c_dict)
+
+
+memory_debugger = _MemDebug()

.venv/lib/python3.9/site-packages/lxml/docloader.pxi

@@ -0,0 +1,178 @@
+# Custom resolver API
+
+ctypedef enum _InputDocumentDataType:
+    PARSER_DATA_INVALID
+    PARSER_DATA_EMPTY
+    PARSER_DATA_STRING
+    PARSER_DATA_FILENAME
+    PARSER_DATA_FILE
+
+@cython.final
+@cython.internal
+cdef class _InputDocument:
+    cdef _InputDocumentDataType _type
+    cdef bytes _data_bytes
+    cdef object _filename
+    cdef object _file
+    cdef bint _close_file
+
+    def __cinit__(self):
+        self._type = PARSER_DATA_INVALID
+
+
+cdef class Resolver:
+    "This is the base class of all resolvers."
+    def resolve(self, system_url, public_id, context):
+        """resolve(self, system_url, public_id, context)
+
+        Override this method to resolve an external source by
+        ``system_url`` and ``public_id``.  The third argument is an
+        opaque context object.
+
+        Return the result of one of the ``resolve_*()`` methods.
+        """
+        return None
+
+    def resolve_empty(self, context):
+        """resolve_empty(self, context)
+
+        Return an empty input document.
+
+        Pass context as parameter.
+        """
+        cdef _InputDocument doc_ref
+        doc_ref = _InputDocument()
+        doc_ref._type = PARSER_DATA_EMPTY
+        return doc_ref
+
+    def resolve_string(self, string, context, *, base_url=None):
+        """resolve_string(self, string, context, base_url=None)
+
+        Return a parsable string as input document.
+
+        Pass data string and context as parameters.  You can pass the
+        source URL or filename through the ``base_url`` keyword
+        argument.
+        """
+        cdef _InputDocument doc_ref
+        if isinstance(string, unicode):
+            string = (<unicode>string).encode('utf8')
+        elif not isinstance(string, bytes):
+            raise TypeError, "argument must be a byte string or unicode string"
+        doc_ref = _InputDocument()
+        doc_ref._type = PARSER_DATA_STRING
+        doc_ref._data_bytes = string
+        if base_url is not None:
+            doc_ref._filename = _encodeFilename(base_url)
+        return doc_ref
+
+    def resolve_filename(self, filename, context):
+        """resolve_filename(self, filename, context)
+
+        Return the name of a parsable file as input document.
+
+        Pass filename and context as parameters.  You can also pass a
+        URL with an HTTP, FTP or file target.
+        """
+        cdef _InputDocument doc_ref
+        doc_ref = _InputDocument()
+        doc_ref._type = PARSER_DATA_FILENAME
+        doc_ref._filename = _encodeFilename(filename)
+        return doc_ref
+
+    def resolve_file(self, f, context, *, base_url=None, bint close=True):
+        """resolve_file(self, f, context, base_url=None, close=True)
+
+        Return an open file-like object as input document.
+
+        Pass open file and context as parameters.  You can pass the
+        base URL or filename of the file through the ``base_url``
+        keyword argument.  If the ``close`` flag is True (the
+        default), the file will be closed after reading.
+
+        Note that using ``.resolve_filename()`` is more efficient,
+        especially in threaded environments.
+        """
+        cdef _InputDocument doc_ref
+        try:
+            f.read
+        except AttributeError:
+            raise TypeError, "Argument is not a file-like object"
+        doc_ref = _InputDocument()
+        doc_ref._type = PARSER_DATA_FILE
+        if base_url is not None:
+            doc_ref._filename = _encodeFilename(base_url)
+        else:
+            doc_ref._filename = _getFilenameForFile(f)
+        doc_ref._close_file = close
+        doc_ref._file = f
+        return doc_ref
+
+@cython.final
+@cython.internal
+cdef class _ResolverRegistry:
+    cdef object _resolvers
+    cdef Resolver _default_resolver
+    def __cinit__(self, Resolver default_resolver=None):
+        self._resolvers = set()
+        self._default_resolver = default_resolver
+
+    def add(self, Resolver resolver not None):
+        """add(self, resolver)
+
+        Register a resolver.
+
+        For each requested entity, the 'resolve' method of the resolver will
+        be called and the result will be passed to the parser.  If this method
+        returns None, the request will be delegated to other resolvers or the
+        default resolver.  The resolvers will be tested in an arbitrary order
+        until the first match is found.
+        """
+        self._resolvers.add(resolver)
+
+    def remove(self, resolver):
+        "remove(self, resolver)"
+        self._resolvers.discard(resolver)
+
+    cdef _ResolverRegistry _copy(self):
+        cdef _ResolverRegistry registry
+        registry = _ResolverRegistry(self._default_resolver)
+        registry._resolvers = self._resolvers.copy()
+        return registry
+
+    def copy(self):
+        "copy(self)"
+        return self._copy()
+
+    def resolve(self, system_url, public_id, context):
+        "resolve(self, system_url, public_id, context)"
+        for resolver in self._resolvers:
+            result = resolver.resolve(system_url, public_id, context)
+            if result is not None:
+                return result
+        if self._default_resolver is None:
+            return None
+        return self._default_resolver.resolve(system_url, public_id, context)
+
+    def __repr__(self):
+        return repr(self._resolvers)
+
+
+@cython.internal
+cdef class _ResolverContext(_ExceptionContext):
+    cdef _ResolverRegistry _resolvers
+    cdef _TempStore _storage
+
+    cdef int clear(self) except -1:
+        _ExceptionContext.clear(self)
+        self._storage.clear()
+        return 0
+
+
+cdef _initResolverContext(_ResolverContext context,
+                          _ResolverRegistry resolvers):
+    if resolvers is None:
+        context._resolvers = _ResolverRegistry()
+    else:
+        context._resolvers = resolvers
+    context._storage = _TempStore()

.venv/lib/python3.9/site-packages/lxml/doctestcompare.py

@@ -0,0 +1,488 @@
+"""
+lxml-based doctest output comparison.
+
+Note: normally, you should just import the `lxml.usedoctest` and
+`lxml.html.usedoctest` modules from within a doctest, instead of this
+one::
+
+    >>> import lxml.usedoctest # for XML output
+
+    >>> import lxml.html.usedoctest # for HTML output
+
+To use this module directly, you must call ``lxmldoctest.install()``,
+which will cause doctest to use this in all subsequent calls.
+
+This changes the way output is checked and comparisons are made for
+XML or HTML-like content.
+
+XML or HTML content is noticed because the example starts with ``<``
+(it's HTML if it starts with ``<html``).  You can also use the
+``PARSE_HTML`` and ``PARSE_XML`` flags to force parsing.
+
+Some rough wildcard-like things are allowed.  Whitespace is generally
+ignored (except in attributes).  In text (attributes and text in the
+body) you can use ``...`` as a wildcard.  In an example it also
+matches any trailing tags in the element, though it does not match
+leading tags.  You may create a tag ``<any>`` or include an ``any``
+attribute in the tag.  An ``any`` tag matches any tag, while the
+attribute matches any and all attributes.
+
+When a match fails, the reformatted example and gotten text is
+displayed (indented), and a rough diff-like output is given.  Anything
+marked with ``+`` is in the output but wasn't supposed to be, and
+similarly ``-`` means its in the example but wasn't in the output.
+
+You can disable parsing on one line with ``# doctest:+NOPARSE_MARKUP``
+"""
+
+from lxml import etree
+import sys
+import re
+import doctest
+try:
+    from html import escape as html_escape
+except ImportError:
+    from cgi import escape as html_escape
+
+__all__ = ['PARSE_HTML', 'PARSE_XML', 'NOPARSE_MARKUP', 'LXMLOutputChecker',
+           'LHTMLOutputChecker', 'install', 'temp_install']
+
+PARSE_HTML = doctest.register_optionflag('PARSE_HTML')
+PARSE_XML = doctest.register_optionflag('PARSE_XML')
+NOPARSE_MARKUP = doctest.register_optionflag('NOPARSE_MARKUP')
+
+OutputChecker = doctest.OutputChecker
+
+def strip(v):
+    if v is None:
+        return None
+    else:
+        return v.strip()
+
+def norm_whitespace(v):
+    return _norm_whitespace_re.sub(' ', v)
+
+_html_parser = etree.HTMLParser(recover=False, remove_blank_text=True)
+
+def html_fromstring(html):
+    return etree.fromstring(html, _html_parser)
+
+# We use this to distinguish repr()s from elements:
+_repr_re = re.compile(r'^<[^>]+ (at|object) ')
+_norm_whitespace_re = re.compile(r'[ \t\n][ \t\n]+')
+
+class LXMLOutputChecker(OutputChecker):
+
+    empty_tags = (
+        'param', 'img', 'area', 'br', 'basefont', 'input',
+        'base', 'meta', 'link', 'col')
+
+    def get_default_parser(self):
+        return etree.XML
+
+    def check_output(self, want, got, optionflags):
+        alt_self = getattr(self, '_temp_override_self', None)
+        if alt_self is not None:
+            super_method = self._temp_call_super_check_output
+            self = alt_self
+        else:
+            super_method = OutputChecker.check_output
+        parser = self.get_parser(want, got, optionflags)
+        if not parser:
+            return super_method(
+                self, want, got, optionflags)
+        try:
+            want_doc = parser(want)
+        except etree.XMLSyntaxError:
+            return False
+        try:
+            got_doc = parser(got)
+        except etree.XMLSyntaxError:
+            return False
+        return self.compare_docs(want_doc, got_doc)
+
+    def get_parser(self, want, got, optionflags):
+        parser = None
+        if NOPARSE_MARKUP & optionflags:
+            return None
+        if PARSE_HTML & optionflags:
+            parser = html_fromstring
+        elif PARSE_XML & optionflags:
+            parser = etree.XML
+        elif (want.strip().lower().startswith('<html')
+              and got.strip().startswith('<html')):
+            parser = html_fromstring
+        elif (self._looks_like_markup(want)
+              and self._looks_like_markup(got)):
+            parser = self.get_default_parser()
+        return parser
+
+    def _looks_like_markup(self, s):
+        s = s.strip()
+        return (s.startswith('<')
+                and not _repr_re.search(s))
+
+    def compare_docs(self, want, got):
+        if not self.tag_compare(want.tag, got.tag):
+            return False
+        if not self.text_compare(want.text, got.text, True):
+            return False
+        if not self.text_compare(want.tail, got.tail, True):
+            return False
+        if 'any' not in want.attrib:
+            want_keys = sorted(want.attrib.keys())
+            got_keys = sorted(got.attrib.keys())
+            if want_keys != got_keys:
+                return False
+            for key in want_keys:
+                if not self.text_compare(want.attrib[key], got.attrib[key], False):
+                    return False
+        if want.text != '...' or len(want):
+            want_children = list(want)
+            got_children = list(got)
+            while want_children or got_children:
+                if not want_children or not got_children:
+                    return False
+                want_first = want_children.pop(0)
+                got_first = got_children.pop(0)
+                if not self.compare_docs(want_first, got_first):
+                    return False
+                if not got_children and want_first.tail == '...':
+                    break
+        return True
+
+    def text_compare(self, want, got, strip):
+        want = want or ''
+        got = got or ''
+        if strip:
+            want = norm_whitespace(want).strip()
+            got = norm_whitespace(got).strip()
+        want = '^%s$' % re.escape(want)
+        want = want.replace(r'\.\.\.', '.*')
+        if re.search(want, got):
+            return True
+        else:
+            return False
+
+    def tag_compare(self, want, got):
+        if want == 'any':
+            return True
+        if (not isinstance(want, (str, bytes))
+                or not isinstance(got, (str, bytes))):
+            return want == got
+        want = want or ''
+        got = got or ''
+        if want.startswith('{...}'):
+            # Ellipsis on the namespace
+            return want.split('}')[-1] == got.split('}')[-1]
+        else:
+            return want == got
+
+    def output_difference(self, example, got, optionflags):
+        want = example.want
+        parser = self.get_parser(want, got, optionflags)
+        errors = []
+        if parser is not None:
+            try:
+                want_doc = parser(want)
+            except etree.XMLSyntaxError:
+                e = sys.exc_info()[1]
+                errors.append('In example: %s' % e)
+            try:
+                got_doc = parser(got)
+            except etree.XMLSyntaxError:
+                e = sys.exc_info()[1]
+                errors.append('In actual output: %s' % e)
+        if parser is None or errors:
+            value = OutputChecker.output_difference(
+                self, example, got, optionflags)
+            if errors:
+                errors.append(value)
+                return '\n'.join(errors)
+            else:
+                return value
+        html = parser is html_fromstring
+        diff_parts = ['Expected:',
+                      self.format_doc(want_doc, html, 2),
+                      'Got:',
+                      self.format_doc(got_doc, html, 2),
+                      'Diff:',
+                      self.collect_diff(want_doc, got_doc, html, 2)]
+        return '\n'.join(diff_parts)
+
+    def html_empty_tag(self, el, html=True):
+        if not html:
+            return False
+        if el.tag not in self.empty_tags:
+            return False
+        if el.text or len(el):
+            # This shouldn't happen (contents in an empty tag)
+            return False
+        return True
+
+    def format_doc(self, doc, html, indent, prefix=''):
+        parts = []
+        if not len(doc):
+            # No children...
+            parts.append(' '*indent)
+            parts.append(prefix)
+            parts.append(self.format_tag(doc))
+            if not self.html_empty_tag(doc, html):
+                if strip(doc.text):
+                    parts.append(self.format_text(doc.text))
+                parts.append(self.format_end_tag(doc))
+            if strip(doc.tail):
+                parts.append(self.format_text(doc.tail))
+            parts.append('\n')
+            return ''.join(parts)
+        parts.append(' '*indent)
+        parts.append(prefix)
+        parts.append(self.format_tag(doc))
+        if not self.html_empty_tag(doc, html):
+            parts.append('\n')
+            if strip(doc.text):
+                parts.append(' '*indent)
+                parts.append(self.format_text(doc.text))
+                parts.append('\n')
+            for el in doc:
+                parts.append(self.format_doc(el, html, indent+2))
+            parts.append(' '*indent)
+            parts.append(self.format_end_tag(doc))
+            parts.append('\n')
+        if strip(doc.tail):
+            parts.append(' '*indent)
+            parts.append(self.format_text(doc.tail))
+            parts.append('\n')
+        return ''.join(parts)
+
+    def format_text(self, text, strip=True):
+        if text is None:
+            return ''
+        if strip:
+            text = text.strip()
+        return html_escape(text, 1)
+
+    def format_tag(self, el):
+        attrs = []
+        if isinstance(el, etree.CommentBase):
+            # FIXME: probably PIs should be handled specially too?
+            return '<!--'
+        for name, value in sorted(el.attrib.items()):
+            attrs.append('%s="%s"' % (name, self.format_text(value, False)))
+        if not attrs:
+            return '<%s>' % el.tag
+        return '<%s %s>' % (el.tag, ' '.join(attrs))
+    
+    def format_end_tag(self, el):
+        if isinstance(el, etree.CommentBase):
+            # FIXME: probably PIs should be handled specially too?
+            return '-->'
+        return '</%s>' % el.tag
+
+    def collect_diff(self, want, got, html, indent):
+        parts = []
+        if not len(want) and not len(got):
+            parts.append(' '*indent)
+            parts.append(self.collect_diff_tag(want, got))
+            if not self.html_empty_tag(got, html):
+                parts.append(self.collect_diff_text(want.text, got.text))
+                parts.append(self.collect_diff_end_tag(want, got))
+            parts.append(self.collect_diff_text(want.tail, got.tail))
+            parts.append('\n')
+            return ''.join(parts)
+        parts.append(' '*indent)
+        parts.append(self.collect_diff_tag(want, got))
+        parts.append('\n')
+        if strip(want.text) or strip(got.text):
+            parts.append(' '*indent)
+            parts.append(self.collect_diff_text(want.text, got.text))
+            parts.append('\n')
+        want_children = list(want)
+        got_children = list(got)
+        while want_children or got_children:
+            if not want_children:
+                parts.append(self.format_doc(got_children.pop(0), html, indent+2, '+'))
+                continue
+            if not got_children:
+                parts.append(self.format_doc(want_children.pop(0), html, indent+2, '-'))
+                continue
+            parts.append(self.collect_diff(
+                want_children.pop(0), got_children.pop(0), html, indent+2))
+        parts.append(' '*indent)
+        parts.append(self.collect_diff_end_tag(want, got))
+        parts.append('\n')
+        if strip(want.tail) or strip(got.tail):
+            parts.append(' '*indent)
+            parts.append(self.collect_diff_text(want.tail, got.tail))
+            parts.append('\n')
+        return ''.join(parts)
+
+    def collect_diff_tag(self, want, got):
+        if not self.tag_compare(want.tag, got.tag):
+            tag = '%s (got: %s)' % (want.tag, got.tag)
+        else:
+            tag = got.tag
+        attrs = []
+        any = want.tag == 'any' or 'any' in want.attrib
+        for name, value in sorted(got.attrib.items()):
+            if name not in want.attrib and not any:
+                attrs.append('+%s="%s"' % (name, self.format_text(value, False)))
+            else:
+                if name in want.attrib:
+                    text = self.collect_diff_text(want.attrib[name], value, False)
+                else:
+                    text = self.format_text(value, False)
+                attrs.append('%s="%s"' % (name, text))
+        if not any:
+            for name, value in sorted(want.attrib.items()):
+                if name in got.attrib:
+                    continue
+                attrs.append('-%s="%s"' % (name, self.format_text(value, False)))
+        if attrs:
+            tag = '<%s %s>' % (tag, ' '.join(attrs))
+        else:
+            tag = '<%s>' % tag
+        return tag
+
+    def collect_diff_end_tag(self, want, got):
+        if want.tag != got.tag:
+            tag = '%s (got: %s)' % (want.tag, got.tag)
+        else:
+            tag = got.tag
+        return '</%s>' % tag
+
+    def collect_diff_text(self, want, got, strip=True):
+        if self.text_compare(want, got, strip):
+            if not got:
+                return ''
+            return self.format_text(got, strip)
+        text = '%s (got: %s)' % (want, got)
+        return self.format_text(text, strip)
+
+class LHTMLOutputChecker(LXMLOutputChecker):
+    def get_default_parser(self):
+        return html_fromstring
+    
+def install(html=False):
+    """
+    Install doctestcompare for all future doctests.
+
+    If html is true, then by default the HTML parser will be used;
+    otherwise the XML parser is used.
+    """
+    if html:
+        doctest.OutputChecker = LHTMLOutputChecker
+    else:
+        doctest.OutputChecker = LXMLOutputChecker
+
+def temp_install(html=False, del_module=None):
+    """
+    Use this *inside* a doctest to enable this checker for this
+    doctest only.
+
+    If html is true, then by default the HTML parser will be used;
+    otherwise the XML parser is used.
+    """
+    if html:
+        Checker = LHTMLOutputChecker
+    else:
+        Checker = LXMLOutputChecker
+    frame = _find_doctest_frame()
+    dt_self = frame.f_locals['self']
+    checker = Checker()
+    old_checker = dt_self._checker
+    dt_self._checker = checker
+    # The unfortunate thing is that there is a local variable 'check'
+    # in the function that runs the doctests, that is a bound method
+    # into the output checker.  We have to update that.  We can't
+    # modify the frame, so we have to modify the object in place.  The
+    # only way to do this is to actually change the func_code
+    # attribute of the method.  We change it, and then wait for
+    # __record_outcome to be run, which signals the end of the __run
+    # method, at which point we restore the previous check_output
+    # implementation.
+    check_func = frame.f_locals['check'].__func__
+    checker_check_func = checker.check_output.__func__
+    # Because we can't patch up func_globals, this is the only global
+    # in check_output that we care about:
+    doctest.etree = etree
+    _RestoreChecker(dt_self, old_checker, checker,
+                    check_func, checker_check_func,
+                    del_module)
+
+class _RestoreChecker:
+    def __init__(self, dt_self, old_checker, new_checker, check_func, clone_func,
+                 del_module):
+        self.dt_self = dt_self
+        self.checker = old_checker
+        self.checker._temp_call_super_check_output = self.call_super
+        self.checker._temp_override_self = new_checker
+        self.check_func = check_func
+        self.clone_func = clone_func
+        self.del_module = del_module
+        self.install_clone()
+        self.install_dt_self()
+    def install_clone(self):
+        self.func_code = self.check_func.__code__
+        self.func_globals = self.check_func.__globals__
+        self.check_func.__code__ = self.clone_func.__code__
+    def uninstall_clone(self):
+        self.check_func.__code__ = self.func_code
+    def install_dt_self(self):
+        self.prev_func = self.dt_self._DocTestRunner__record_outcome
+        self.dt_self._DocTestRunner__record_outcome = self
+    def uninstall_dt_self(self):
+        self.dt_self._DocTestRunner__record_outcome = self.prev_func
+    def uninstall_module(self):
+        if self.del_module:
+            import sys
+            del sys.modules[self.del_module]
+            if '.' in self.del_module:
+                package, module = self.del_module.rsplit('.', 1)
+                package_mod = sys.modules[package]
+                delattr(package_mod, module)
+    def __call__(self, *args, **kw):
+        self.uninstall_clone()
+        self.uninstall_dt_self()
+        del self.checker._temp_override_self
+        del self.checker._temp_call_super_check_output
+        result = self.prev_func(*args, **kw)
+        self.uninstall_module()
+        return result
+    def call_super(self, *args, **kw):
+        self.uninstall_clone()
+        try:
+            return self.check_func(*args, **kw)
+        finally:
+            self.install_clone()
+            
+def _find_doctest_frame():
+    import sys
+    frame = sys._getframe(1)
+    while frame:
+        l = frame.f_locals
+        if 'BOOM' in l:
+            # Sign of doctest
+            return frame
+        frame = frame.f_back
+    raise LookupError(
+        "Could not find doctest (only use this function *inside* a doctest)")
+    
+__test__ = {
+    'basic': '''
+    >>> temp_install()
+    >>> print """<xml a="1" b="2">stuff</xml>"""
+    <xml b="2" a="1">...</xml>
+    >>> print """<xml xmlns="http://example.com"><tag   attr="bar"   /></xml>"""
+    <xml xmlns="...">
+      <tag attr="..." />
+    </xml>
+    >>> print """<xml>blahblahblah<foo /></xml>""" # doctest: +NOPARSE_MARKUP, +ELLIPSIS
+    <xml>...foo /></xml>
+    '''}
+
+if __name__ == '__main__':
+    import doctest
+    doctest.testmod()
+    
+    

.venv/lib/python3.9/site-packages/lxml/dtd.pxi

@@ -0,0 +1,479 @@
+# support for DTD validation
+from lxml.includes cimport dtdvalid
+
+cdef class DTDError(LxmlError):
+    """Base class for DTD errors.
+    """
+
+cdef class DTDParseError(DTDError):
+    """Error while parsing a DTD.
+    """
+
+cdef class DTDValidateError(DTDError):
+    """Error while validating an XML document with a DTD.
+    """
+
+
+cdef inline int _assertValidDTDNode(node, void *c_node) except -1:
+    assert c_node is not NULL, "invalid DTD proxy at %s" % id(node)
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _DTDElementContentDecl:
+    cdef DTD _dtd
+    cdef tree.xmlElementContent* _c_node
+
+    def __repr__(self):
+        return "<%s.%s object name=%r type=%r occur=%r at 0x%x>" % (self.__class__.__module__, self.__class__.__name__, self.name, self.type, self.occur, id(self))
+
+    @property
+    def name(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.name)
+
+    @property
+    def type(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef int type = self._c_node.type
+       if type == tree.XML_ELEMENT_CONTENT_PCDATA:
+           return "pcdata"
+       elif type == tree.XML_ELEMENT_CONTENT_ELEMENT:
+           return "element"
+       elif type == tree.XML_ELEMENT_CONTENT_SEQ:
+           return "seq"
+       elif type == tree.XML_ELEMENT_CONTENT_OR:
+           return "or"
+       else:
+           return None
+
+    @property
+    def occur(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef int occur = self._c_node.ocur
+       if occur == tree.XML_ELEMENT_CONTENT_ONCE:
+           return "once"
+       elif occur == tree.XML_ELEMENT_CONTENT_OPT:
+           return "opt"
+       elif occur == tree.XML_ELEMENT_CONTENT_MULT:
+           return "mult"
+       elif occur == tree.XML_ELEMENT_CONTENT_PLUS:
+           return "plus"
+       else:
+           return None
+
+    @property
+    def left(self):
+       _assertValidDTDNode(self, self._c_node)
+       c1 = self._c_node.c1
+       if c1:
+           node = <_DTDElementContentDecl>_DTDElementContentDecl.__new__(_DTDElementContentDecl)
+           node._dtd = self._dtd
+           node._c_node = <tree.xmlElementContent*>c1
+           return node
+       else:
+           return None
+
+    @property
+    def right(self):
+       _assertValidDTDNode(self, self._c_node)
+       c2 = self._c_node.c2
+       if c2:
+           node = <_DTDElementContentDecl>_DTDElementContentDecl.__new__(_DTDElementContentDecl)
+           node._dtd = self._dtd
+           node._c_node = <tree.xmlElementContent*>c2
+           return node
+       else:
+           return None
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _DTDAttributeDecl:
+    cdef DTD _dtd
+    cdef tree.xmlAttribute* _c_node
+
+    def __repr__(self):
+        return "<%s.%s object name=%r elemname=%r prefix=%r type=%r default=%r default_value=%r at 0x%x>" % (self.__class__.__module__, self.__class__.__name__, self.name, self.elemname, self.prefix, self.type, self.default, self.default_value, id(self))
+
+    @property
+    def name(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.name)
+
+    @property
+    def elemname(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.elem)
+
+    @property
+    def prefix(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.prefix)
+
+    @property
+    def type(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef int type = self._c_node.atype
+       if type == tree.XML_ATTRIBUTE_CDATA:
+           return "cdata"
+       elif type == tree.XML_ATTRIBUTE_ID:
+           return "id"
+       elif type == tree.XML_ATTRIBUTE_IDREF:
+           return "idref"
+       elif type == tree.XML_ATTRIBUTE_IDREFS:
+           return "idrefs"
+       elif type == tree.XML_ATTRIBUTE_ENTITY:
+           return "entity"
+       elif type == tree.XML_ATTRIBUTE_ENTITIES:
+           return "entities"
+       elif type == tree.XML_ATTRIBUTE_NMTOKEN:
+           return "nmtoken"
+       elif type == tree.XML_ATTRIBUTE_NMTOKENS:
+           return "nmtokens"
+       elif type == tree.XML_ATTRIBUTE_ENUMERATION:
+           return "enumeration"
+       elif type == tree.XML_ATTRIBUTE_NOTATION:
+           return "notation"
+       else:
+           return None
+
+    @property
+    def default(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef int default = self._c_node.def_
+       if default == tree.XML_ATTRIBUTE_NONE:
+           return "none"
+       elif default == tree.XML_ATTRIBUTE_REQUIRED:
+           return "required"
+       elif default == tree.XML_ATTRIBUTE_IMPLIED:
+           return "implied"
+       elif default == tree.XML_ATTRIBUTE_FIXED:
+           return "fixed"
+       else:
+           return None
+
+    @property
+    def default_value(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.defaultValue)
+
+    def itervalues(self):
+        _assertValidDTDNode(self, self._c_node)
+        cdef tree.xmlEnumeration *c_node = self._c_node.tree
+        while c_node is not NULL:
+            yield funicode(c_node.name)
+            c_node = c_node.next
+
+    def values(self):
+        return list(self.itervalues())
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _DTDElementDecl:
+    cdef DTD _dtd
+    cdef tree.xmlElement* _c_node
+
+    def __repr__(self):
+        return "<%s.%s object name=%r prefix=%r type=%r at 0x%x>" % (self.__class__.__module__, self.__class__.__name__, self.name, self.prefix, self.type, id(self))
+
+    @property
+    def name(self):
+        _assertValidDTDNode(self, self._c_node)
+        return funicodeOrNone(self._c_node.name)
+
+    @property
+    def prefix(self):
+       _assertValidDTDNode(self, self._c_node)
+       return funicodeOrNone(self._c_node.prefix)
+
+    @property
+    def type(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef int type = self._c_node.etype
+       if type == tree.XML_ELEMENT_TYPE_UNDEFINED:
+           return "undefined"
+       elif type == tree.XML_ELEMENT_TYPE_EMPTY:
+           return "empty"
+       elif type == tree.XML_ELEMENT_TYPE_ANY:
+           return "any"
+       elif type == tree.XML_ELEMENT_TYPE_MIXED:
+           return "mixed"
+       elif type == tree.XML_ELEMENT_TYPE_ELEMENT:
+           return "element"
+       else:
+           return None
+
+    @property
+    def content(self):
+       _assertValidDTDNode(self, self._c_node)
+       cdef tree.xmlElementContent *content = self._c_node.content
+       if content:
+           node = <_DTDElementContentDecl>_DTDElementContentDecl.__new__(_DTDElementContentDecl)
+           node._dtd = self._dtd
+           node._c_node = content
+           return node
+       else:
+           return None
+
+    def iterattributes(self):
+        _assertValidDTDNode(self, self._c_node)
+        cdef tree.xmlAttribute *c_node = self._c_node.attributes
+        while c_node:
+            node = <_DTDAttributeDecl>_DTDAttributeDecl.__new__(_DTDAttributeDecl)
+            node._dtd = self._dtd
+            node._c_node = c_node
+            yield node
+            c_node = c_node.nexth
+
+    def attributes(self):
+        return list(self.iterattributes())
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _DTDEntityDecl:
+    cdef DTD _dtd
+    cdef tree.xmlEntity* _c_node
+    def __repr__(self):
+        return "<%s.%s object name=%r at 0x%x>" % (self.__class__.__module__, self.__class__.__name__, self.name, id(self))
+
+    @property
+    def name(self):
+        _assertValidDTDNode(self, self._c_node)
+        return funicodeOrNone(self._c_node.name)
+
+    @property
+    def orig(self):
+        _assertValidDTDNode(self, self._c_node)
+        return funicodeOrNone(self._c_node.orig)
+
+    @property
+    def content(self):
+        _assertValidDTDNode(self, self._c_node)
+        return funicodeOrNone(self._c_node.content)
+
+    @property
+    def system_url(self):
+        _assertValidDTDNode(self, self._c_node)
+        return funicodeOrNone(self._c_node.SystemID)
+
+
+################################################################################
+# DTD
+
+cdef class DTD(_Validator):
+    """DTD(self, file=None, external_id=None)
+    A DTD validator.
+
+    Can load from filesystem directly given a filename or file-like object.
+    Alternatively, pass the keyword parameter ``external_id`` to load from a
+    catalog.
+    """
+    cdef tree.xmlDtd* _c_dtd
+    def __init__(self, file=None, *, external_id=None):
+        _Validator.__init__(self)
+        if file is not None:
+            file = _getFSPathOrObject(file)
+            if _isString(file):
+                file = _encodeFilename(file)
+                with self._error_log:
+                    orig_loader = _register_document_loader()
+                    self._c_dtd = xmlparser.xmlParseDTD(NULL, _xcstr(file))
+                    _reset_document_loader(orig_loader)
+            elif hasattr(file, 'read'):
+                orig_loader = _register_document_loader()
+                self._c_dtd = _parseDtdFromFilelike(file)
+                _reset_document_loader(orig_loader)
+            else:
+                raise DTDParseError, "file must be a filename, file-like or path-like object"
+        elif external_id is not None:
+            external_id_utf = _utf8(external_id)
+            with self._error_log:
+                orig_loader = _register_document_loader()
+                self._c_dtd = xmlparser.xmlParseDTD(<const_xmlChar*>external_id_utf, NULL)
+                _reset_document_loader(orig_loader)
+        else:
+            raise DTDParseError, "either filename or external ID required"
+
+        if self._c_dtd is NULL:
+            raise DTDParseError(
+                self._error_log._buildExceptionMessage("error parsing DTD"),
+                self._error_log)
+
+    @property
+    def name(self):
+       if self._c_dtd is NULL:
+           return None
+       return funicodeOrNone(self._c_dtd.name)
+
+    @property
+    def external_id(self):
+       if self._c_dtd is NULL:
+           return None
+       return funicodeOrNone(self._c_dtd.ExternalID)
+
+    @property
+    def system_url(self):
+       if self._c_dtd is NULL:
+           return None
+       return funicodeOrNone(self._c_dtd.SystemID)
+
+    def iterelements(self):
+        cdef tree.xmlNode *c_node = self._c_dtd.children if self._c_dtd is not NULL else NULL
+        while c_node is not NULL:
+            if c_node.type == tree.XML_ELEMENT_DECL:
+                node = _DTDElementDecl()
+                node._dtd = self
+                node._c_node = <tree.xmlElement*>c_node
+                yield node
+            c_node = c_node.next
+
+    def elements(self):
+        return list(self.iterelements())
+
+    def iterentities(self):
+        cdef tree.xmlNode *c_node = self._c_dtd.children if self._c_dtd is not NULL else NULL
+        while c_node is not NULL:
+            if c_node.type == tree.XML_ENTITY_DECL:
+                node = _DTDEntityDecl()
+                node._dtd = self
+                node._c_node = <tree.xmlEntity*>c_node
+                yield node
+            c_node = c_node.next
+
+    def entities(self):
+        return list(self.iterentities())
+
+    def __dealloc__(self):
+        tree.xmlFreeDtd(self._c_dtd)
+
+    def __call__(self, etree):
+        """__call__(self, etree)
+
+        Validate doc using the DTD.
+
+        Returns true if the document is valid, false if not.
+        """
+        cdef _Document doc
+        cdef _Element root_node
+        cdef xmlDoc* c_doc
+        cdef dtdvalid.xmlValidCtxt* valid_ctxt
+        cdef int ret = -1
+
+        assert self._c_dtd is not NULL, "DTD not initialised"
+        doc = _documentOrRaise(etree)
+        root_node = _rootNodeOrRaise(etree)
+
+        valid_ctxt = dtdvalid.xmlNewValidCtxt()
+        if valid_ctxt is NULL:
+            raise DTDError("Failed to create validation context")
+
+        # work around error reporting bug in libxml2 <= 2.9.1 (and later?)
+        # https://bugzilla.gnome.org/show_bug.cgi?id=724903
+        valid_ctxt.error = <dtdvalid.xmlValidityErrorFunc>_nullGenericErrorFunc
+        valid_ctxt.userData = NULL
+
+        try:
+            with self._error_log:
+                c_doc = _fakeRootDoc(doc._c_doc, root_node._c_node)
+                ret = dtdvalid.xmlValidateDtd(valid_ctxt, c_doc, self._c_dtd)
+                _destroyFakeDoc(doc._c_doc, c_doc)
+        finally:
+            dtdvalid.xmlFreeValidCtxt(valid_ctxt)
+
+        if ret == -1:
+            raise DTDValidateError("Internal error in DTD validation",
+                                   self._error_log)
+        return ret == 1
+
+
+cdef tree.xmlDtd* _parseDtdFromFilelike(file) except NULL:
+    cdef _ExceptionContext exc_context
+    cdef _FileReaderContext dtd_parser
+    cdef _ErrorLog error_log
+    cdef tree.xmlDtd* c_dtd = NULL
+    exc_context = _ExceptionContext()
+    dtd_parser = _FileReaderContext(file, exc_context, None)
+    error_log = _ErrorLog()
+
+    with error_log:
+        c_dtd = dtd_parser._readDtd()
+
+    exc_context._raise_if_stored()
+    if c_dtd is NULL:
+        raise DTDParseError("error parsing DTD", error_log)
+    return c_dtd
+
+cdef DTD _dtdFactory(tree.xmlDtd* c_dtd):
+    # do not run through DTD.__init__()!
+    cdef DTD dtd
+    if c_dtd is NULL:
+        return None
+    dtd = DTD.__new__(DTD)
+    dtd._c_dtd = _copyDtd(c_dtd)
+    _Validator.__init__(dtd)
+    return dtd
+
+
+cdef tree.xmlDtd* _copyDtd(tree.xmlDtd* c_orig_dtd) except NULL:
+    """
+    Copy a DTD.  libxml2 (currently) fails to set up the element->attributes
+    links when copying DTDs, so we have to rebuild them here.
+    """
+    c_dtd = tree.xmlCopyDtd(c_orig_dtd)
+    if not c_dtd:
+        raise MemoryError
+    cdef tree.xmlNode* c_node = c_dtd.children
+    while c_node:
+        if c_node.type == tree.XML_ATTRIBUTE_DECL:
+            _linkDtdAttribute(c_dtd, <tree.xmlAttribute*>c_node)
+        c_node = c_node.next
+    return c_dtd
+
+
+cdef void _linkDtdAttribute(tree.xmlDtd* c_dtd, tree.xmlAttribute* c_attr) noexcept:
+    """
+    Create the link to the DTD attribute declaration from the corresponding
+    element declaration.
+    """
+    c_elem = dtdvalid.xmlGetDtdElementDesc(c_dtd, c_attr.elem)
+    if not c_elem:
+        # no such element? something is wrong with the DTD ...
+        return
+    c_pos = c_elem.attributes
+    if not c_pos:
+        c_elem.attributes = c_attr
+        c_attr.nexth = NULL
+        return
+    # libxml2 keeps namespace declarations first, and we need to make
+    # sure we don't re-insert attributes that are already there
+    if _isDtdNsDecl(c_attr):
+        if not _isDtdNsDecl(c_pos):
+            c_elem.attributes = c_attr
+            c_attr.nexth = c_pos
+            return
+        while c_pos != c_attr and c_pos.nexth and _isDtdNsDecl(c_pos.nexth):
+            c_pos = c_pos.nexth
+    else:
+        # append at end
+        while c_pos != c_attr and c_pos.nexth:
+            c_pos = c_pos.nexth
+    if c_pos == c_attr:
+        return
+    c_attr.nexth = c_pos.nexth
+    c_pos.nexth = c_attr
+
+
+cdef bint _isDtdNsDecl(tree.xmlAttribute* c_attr) noexcept:
+    if cstring_h.strcmp(<const_char*>c_attr.name, "xmlns") == 0:
+        return True
+    if (c_attr.prefix is not NULL and
+            cstring_h.strcmp(<const_char*>c_attr.prefix, "xmlns") == 0):
+        return True
+    return False

.venv/lib/python3.9/site-packages/lxml/etree.h

@@ -0,0 +1,244 @@
+/* Generated by Cython 3.1.4 */
+
+#ifndef __PYX_HAVE__lxml__etree
+#define __PYX_HAVE__lxml__etree
+
+#include "Python.h"
+struct LxmlDocument;
+struct LxmlElement;
+struct LxmlElementTree;
+struct LxmlElementTagMatcher;
+struct LxmlElementIterator;
+struct LxmlElementBase;
+struct LxmlElementClassLookup;
+struct LxmlFallbackElementClassLookup;
+
+/* "lxml/etree.pyx":451
+ * 
+ * # type of a function that steps from node to node
+ * ctypedef public xmlNode* (*_node_to_node_function)(xmlNode*)             # <<<<<<<<<<<<<<
+ * 
+ * 
+*/
+typedef xmlNode *(*_node_to_node_function)(xmlNode *);
+
+/* "lxml/etree.pyx":465
+ * # Public Python API
+ * 
+ * @cython.final             # <<<<<<<<<<<<<<
+ * @cython.freelist(8)
+ * cdef public class _Document [ type LxmlDocumentType, object LxmlDocument ]:
+*/
+struct LxmlDocument {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__Document *__pyx_vtab;
+  int _ns_counter;
+  PyObject *_prefix_tail;
+  xmlDoc *_c_doc;
+  struct __pyx_obj_4lxml_5etree__BaseParser *_parser;
+};
+
+/* "lxml/etree.pyx":817
+ * 
+ * 
+ * @cython.no_gc_clear             # <<<<<<<<<<<<<<
+ * cdef public class _Element [ type LxmlElementType, object LxmlElement ]:
+ *     """Element class.
+*/
+struct LxmlElement {
+  PyObject_HEAD
+  struct LxmlDocument *_doc;
+  xmlNode *_c_node;
+  PyObject *_tag;
+};
+
+/* "lxml/etree.pyx":1991
+ * 
+ * 
+ * cdef public class _ElementTree [ type LxmlElementTreeType,             # <<<<<<<<<<<<<<
+ *                                  object LxmlElementTree ]:
+ *     cdef _Document _doc
+*/
+struct LxmlElementTree {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__ElementTree *__pyx_vtab;
+  struct LxmlDocument *_doc;
+  struct LxmlElement *_context_node;
+};
+
+/* "lxml/etree.pyx":2765
+ * 
+ * 
+ * cdef public class _ElementTagMatcher [ object LxmlElementTagMatcher,             # <<<<<<<<<<<<<<
+ *                                        type LxmlElementTagMatcherType ]:
+ *     """
+*/
+struct LxmlElementTagMatcher {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__ElementTagMatcher *__pyx_vtab;
+  PyObject *_pystrings;
+  int _node_type;
+  char *_href;
+  char *_name;
+};
+
+/* "lxml/etree.pyx":2796
+ *                 self._name = NULL
+ * 
+ * cdef public class _ElementIterator(_ElementTagMatcher) [             # <<<<<<<<<<<<<<
+ *     object LxmlElementIterator, type LxmlElementIteratorType ]:
+ *     """
+*/
+struct LxmlElementIterator {
+  struct LxmlElementTagMatcher __pyx_base;
+  struct LxmlElement *_node;
+  _node_to_node_function _next_element;
+};
+
+/* "src/lxml/classlookup.pxi":6
+ * # Custom Element classes
+ * 
+ * cdef public class ElementBase(_Element) [ type LxmlElementBaseType,             # <<<<<<<<<<<<<<
+ *                                           object LxmlElementBase ]:
+ *     """ElementBase(*children, attrib=None, nsmap=None, **_extra)
+*/
+struct LxmlElementBase {
+  struct LxmlElement __pyx_base;
+};
+
+/* "src/lxml/classlookup.pxi":210
+ * # Element class lookup
+ * 
+ * ctypedef public object (*_element_class_lookup_function)(object, _Document, xmlNode*)             # <<<<<<<<<<<<<<
+ * 
+ * # class to store element class lookup functions
+*/
+typedef PyObject *(*_element_class_lookup_function)(PyObject *, struct LxmlDocument *, xmlNode *);
+
+/* "src/lxml/classlookup.pxi":213
+ * 
+ * # class to store element class lookup functions
+ * cdef public class ElementClassLookup [ type LxmlElementClassLookupType,             # <<<<<<<<<<<<<<
+ *                                        object LxmlElementClassLookup ]:
+ *     """ElementClassLookup(self)
+*/
+struct LxmlElementClassLookup {
+  PyObject_HEAD
+  _element_class_lookup_function _lookup_function;
+};
+
+/* "src/lxml/classlookup.pxi":221
+ * 
+ * 
+ * cdef public class FallbackElementClassLookup(ElementClassLookup) \             # <<<<<<<<<<<<<<
+ *          [ type LxmlFallbackElementClassLookupType,
+ *            object LxmlFallbackElementClassLookup ]:
+*/
+struct LxmlFallbackElementClassLookup {
+  struct LxmlElementClassLookup __pyx_base;
+  struct __pyx_vtabstruct_4lxml_5etree_FallbackElementClassLookup *__pyx_vtab;
+  struct LxmlElementClassLookup *fallback;
+  _element_class_lookup_function _fallback_function;
+};
+
+#ifndef __PYX_HAVE_API__lxml__etree
+
+#ifdef CYTHON_EXTERN_C
+    #undef __PYX_EXTERN_C
+    #define __PYX_EXTERN_C CYTHON_EXTERN_C
+#elif defined(__PYX_EXTERN_C)
+    #ifdef _MSC_VER
+    #pragma message ("Please do not define the '__PYX_EXTERN_C' macro externally. Use 'CYTHON_EXTERN_C' instead.")
+    #else
+    #warning Please do not define the '__PYX_EXTERN_C' macro externally. Use 'CYTHON_EXTERN_C' instead.
+    #endif
+#else
+  #ifdef __cplusplus
+    #define __PYX_EXTERN_C extern "C"
+  #else
+    #define __PYX_EXTERN_C extern
+  #endif
+#endif
+
+#ifndef DL_IMPORT
+  #define DL_IMPORT(_T) _T
+#endif
+
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlDocumentType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementTreeType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementTagMatcherType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementIteratorType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementBaseType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementClassLookupType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlFallbackElementClassLookupType;
+
+__PYX_EXTERN_C struct LxmlElement *deepcopyNodeToDocument(struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C struct LxmlElementTree *elementTreeFactory(struct LxmlElement *);
+__PYX_EXTERN_C struct LxmlElementTree *newElementTree(struct LxmlElement *, PyObject *);
+__PYX_EXTERN_C struct LxmlElementTree *adoptExternalDocument(xmlDoc *, PyObject *, int);
+__PYX_EXTERN_C struct LxmlElement *elementFactory(struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C struct LxmlElement *makeElement(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *);
+__PYX_EXTERN_C struct LxmlElement *makeSubElement(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *);
+__PYX_EXTERN_C void setElementClassLookupFunction(_element_class_lookup_function, PyObject *);
+__PYX_EXTERN_C PyObject *lookupDefaultElementClass(PyObject *, PyObject *, xmlNode *);
+__PYX_EXTERN_C PyObject *lookupNamespaceElementClass(PyObject *, PyObject *, xmlNode *);
+__PYX_EXTERN_C PyObject *callLookupFallback(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C int tagMatches(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C struct LxmlDocument *documentOrRaise(PyObject *);
+__PYX_EXTERN_C struct LxmlElement *rootNodeOrRaise(PyObject *);
+__PYX_EXTERN_C int hasText(xmlNode *);
+__PYX_EXTERN_C int hasTail(xmlNode *);
+__PYX_EXTERN_C PyObject *textOf(xmlNode *);
+__PYX_EXTERN_C PyObject *tailOf(xmlNode *);
+__PYX_EXTERN_C int setNodeText(xmlNode *, PyObject *);
+__PYX_EXTERN_C int setTailText(xmlNode *, PyObject *);
+__PYX_EXTERN_C PyObject *attributeValue(xmlNode *, xmlAttr *);
+__PYX_EXTERN_C PyObject *attributeValueFromNsName(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C PyObject *getAttributeValue(struct LxmlElement *, PyObject *, PyObject *);
+__PYX_EXTERN_C PyObject *iterattributes(struct LxmlElement *, int);
+__PYX_EXTERN_C PyObject *collectAttributes(xmlNode *, int);
+__PYX_EXTERN_C int setAttributeValue(struct LxmlElement *, PyObject *, PyObject *);
+__PYX_EXTERN_C int delAttribute(struct LxmlElement *, PyObject *);
+__PYX_EXTERN_C int delAttributeFromNsName(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C int hasChild(xmlNode *);
+__PYX_EXTERN_C xmlNode *findChild(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *findChildForwards(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *findChildBackwards(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *nextElement(xmlNode *);
+__PYX_EXTERN_C xmlNode *previousElement(xmlNode *);
+__PYX_EXTERN_C void appendChild(struct LxmlElement *, struct LxmlElement *);
+__PYX_EXTERN_C int appendChildToElement(struct LxmlElement *, struct LxmlElement *);
+__PYX_EXTERN_C PyObject *pyunicode(const xmlChar *);
+__PYX_EXTERN_C PyObject *utf8(PyObject *);
+__PYX_EXTERN_C PyObject *getNsTag(PyObject *);
+__PYX_EXTERN_C PyObject *getNsTagWithEmptyNs(PyObject *);
+__PYX_EXTERN_C PyObject *namespacedName(xmlNode *);
+__PYX_EXTERN_C PyObject *namespacedNameFromNsName(const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C void iteratorStoreNext(struct LxmlElementIterator *, struct LxmlElement *);
+__PYX_EXTERN_C void initTagMatch(struct LxmlElementTagMatcher *, PyObject *);
+__PYX_EXTERN_C xmlNs *findOrBuildNodeNsPrefix(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *);
+
+#endif /* !__PYX_HAVE_API__lxml__etree */
+
+/* WARNING: the interface of the module init function changed in CPython 3.5. */
+/* It now returns a PyModuleDef instance instead of a PyModule instance. */
+
+/* WARNING: Use PyImport_AppendInittab("etree", PyInit_etree) instead of calling PyInit_etree directly from Python 3.5 */
+PyMODINIT_FUNC PyInit_etree(void);
+
+#if PY_VERSION_HEX >= 0x03050000 && (defined(__GNUC__) || defined(__clang__) || defined(_MSC_VER) || (defined(__cplusplus) && __cplusplus >= 201402L))
+#if defined(__cplusplus) && __cplusplus >= 201402L
+[[deprecated("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly.")]] inline
+#elif defined(__GNUC__) || defined(__clang__)
+__attribute__ ((__deprecated__("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly."), __unused__)) __inline__
+#elif defined(_MSC_VER)
+__declspec(deprecated("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly.")) __inline
+#endif
+static PyObject* __PYX_WARN_IF_PyInit_etree_INIT_CALLED(PyObject* res) {
+  return res;
+}
+#define PyInit_etree() __PYX_WARN_IF_PyInit_etree_INIT_CALLED(PyInit_etree())
+#endif
+
+#endif /* !__PYX_HAVE__lxml__etree */

.venv/lib/python3.9/site-packages/lxml/etree_api.h

@@ -0,0 +1,204 @@
+/* Generated by Cython 3.1.4 */
+
+#ifndef __PYX_HAVE_API__lxml__etree
+#define __PYX_HAVE_API__lxml__etree
+#ifdef __MINGW64__
+#define MS_WIN64
+#endif
+#include "Python.h"
+#include "etree.h"
+
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_deepcopyNodeToDocument)(struct LxmlDocument *, xmlNode *) = 0;
+#define deepcopyNodeToDocument __pyx_api_f_4lxml_5etree_deepcopyNodeToDocument
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_elementTreeFactory)(struct LxmlElement *) = 0;
+#define elementTreeFactory __pyx_api_f_4lxml_5etree_elementTreeFactory
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_newElementTree)(struct LxmlElement *, PyObject *) = 0;
+#define newElementTree __pyx_api_f_4lxml_5etree_newElementTree
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_adoptExternalDocument)(xmlDoc *, PyObject *, int) = 0;
+#define adoptExternalDocument __pyx_api_f_4lxml_5etree_adoptExternalDocument
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_elementFactory)(struct LxmlDocument *, xmlNode *) = 0;
+#define elementFactory __pyx_api_f_4lxml_5etree_elementFactory
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_makeElement)(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *) = 0;
+#define makeElement __pyx_api_f_4lxml_5etree_makeElement
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_makeSubElement)(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *) = 0;
+#define makeSubElement __pyx_api_f_4lxml_5etree_makeSubElement
+static void (*__pyx_api_f_4lxml_5etree_setElementClassLookupFunction)(_element_class_lookup_function, PyObject *) = 0;
+#define setElementClassLookupFunction __pyx_api_f_4lxml_5etree_setElementClassLookupFunction
+static PyObject *(*__pyx_api_f_4lxml_5etree_lookupDefaultElementClass)(PyObject *, PyObject *, xmlNode *) = 0;
+#define lookupDefaultElementClass __pyx_api_f_4lxml_5etree_lookupDefaultElementClass
+static PyObject *(*__pyx_api_f_4lxml_5etree_lookupNamespaceElementClass)(PyObject *, PyObject *, xmlNode *) = 0;
+#define lookupNamespaceElementClass __pyx_api_f_4lxml_5etree_lookupNamespaceElementClass
+static PyObject *(*__pyx_api_f_4lxml_5etree_callLookupFallback)(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *) = 0;
+#define callLookupFallback __pyx_api_f_4lxml_5etree_callLookupFallback
+static int (*__pyx_api_f_4lxml_5etree_tagMatches)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define tagMatches __pyx_api_f_4lxml_5etree_tagMatches
+static struct LxmlDocument *(*__pyx_api_f_4lxml_5etree_documentOrRaise)(PyObject *) = 0;
+#define documentOrRaise __pyx_api_f_4lxml_5etree_documentOrRaise
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_rootNodeOrRaise)(PyObject *) = 0;
+#define rootNodeOrRaise __pyx_api_f_4lxml_5etree_rootNodeOrRaise
+static int (*__pyx_api_f_4lxml_5etree_hasText)(xmlNode *) = 0;
+#define hasText __pyx_api_f_4lxml_5etree_hasText
+static int (*__pyx_api_f_4lxml_5etree_hasTail)(xmlNode *) = 0;
+#define hasTail __pyx_api_f_4lxml_5etree_hasTail
+static PyObject *(*__pyx_api_f_4lxml_5etree_textOf)(xmlNode *) = 0;
+#define textOf __pyx_api_f_4lxml_5etree_textOf
+static PyObject *(*__pyx_api_f_4lxml_5etree_tailOf)(xmlNode *) = 0;
+#define tailOf __pyx_api_f_4lxml_5etree_tailOf
+static int (*__pyx_api_f_4lxml_5etree_setNodeText)(xmlNode *, PyObject *) = 0;
+#define setNodeText __pyx_api_f_4lxml_5etree_setNodeText
+static int (*__pyx_api_f_4lxml_5etree_setTailText)(xmlNode *, PyObject *) = 0;
+#define setTailText __pyx_api_f_4lxml_5etree_setTailText
+static PyObject *(*__pyx_api_f_4lxml_5etree_attributeValue)(xmlNode *, xmlAttr *) = 0;
+#define attributeValue __pyx_api_f_4lxml_5etree_attributeValue
+static PyObject *(*__pyx_api_f_4lxml_5etree_attributeValueFromNsName)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define attributeValueFromNsName __pyx_api_f_4lxml_5etree_attributeValueFromNsName
+static PyObject *(*__pyx_api_f_4lxml_5etree_getAttributeValue)(struct LxmlElement *, PyObject *, PyObject *) = 0;
+#define getAttributeValue __pyx_api_f_4lxml_5etree_getAttributeValue
+static PyObject *(*__pyx_api_f_4lxml_5etree_iterattributes)(struct LxmlElement *, int) = 0;
+#define iterattributes __pyx_api_f_4lxml_5etree_iterattributes
+static PyObject *(*__pyx_api_f_4lxml_5etree_collectAttributes)(xmlNode *, int) = 0;
+#define collectAttributes __pyx_api_f_4lxml_5etree_collectAttributes
+static int (*__pyx_api_f_4lxml_5etree_setAttributeValue)(struct LxmlElement *, PyObject *, PyObject *) = 0;
+#define setAttributeValue __pyx_api_f_4lxml_5etree_setAttributeValue
+static int (*__pyx_api_f_4lxml_5etree_delAttribute)(struct LxmlElement *, PyObject *) = 0;
+#define delAttribute __pyx_api_f_4lxml_5etree_delAttribute
+static int (*__pyx_api_f_4lxml_5etree_delAttributeFromNsName)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define delAttributeFromNsName __pyx_api_f_4lxml_5etree_delAttributeFromNsName
+static int (*__pyx_api_f_4lxml_5etree_hasChild)(xmlNode *) = 0;
+#define hasChild __pyx_api_f_4lxml_5etree_hasChild
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChild)(xmlNode *, Py_ssize_t) = 0;
+#define findChild __pyx_api_f_4lxml_5etree_findChild
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChildForwards)(xmlNode *, Py_ssize_t) = 0;
+#define findChildForwards __pyx_api_f_4lxml_5etree_findChildForwards
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChildBackwards)(xmlNode *, Py_ssize_t) = 0;
+#define findChildBackwards __pyx_api_f_4lxml_5etree_findChildBackwards
+static xmlNode *(*__pyx_api_f_4lxml_5etree_nextElement)(xmlNode *) = 0;
+#define nextElement __pyx_api_f_4lxml_5etree_nextElement
+static xmlNode *(*__pyx_api_f_4lxml_5etree_previousElement)(xmlNode *) = 0;
+#define previousElement __pyx_api_f_4lxml_5etree_previousElement
+static void (*__pyx_api_f_4lxml_5etree_appendChild)(struct LxmlElement *, struct LxmlElement *) = 0;
+#define appendChild __pyx_api_f_4lxml_5etree_appendChild
+static int (*__pyx_api_f_4lxml_5etree_appendChildToElement)(struct LxmlElement *, struct LxmlElement *) = 0;
+#define appendChildToElement __pyx_api_f_4lxml_5etree_appendChildToElement
+static PyObject *(*__pyx_api_f_4lxml_5etree_pyunicode)(const xmlChar *) = 0;
+#define pyunicode __pyx_api_f_4lxml_5etree_pyunicode
+static PyObject *(*__pyx_api_f_4lxml_5etree_utf8)(PyObject *) = 0;
+#define utf8 __pyx_api_f_4lxml_5etree_utf8
+static PyObject *(*__pyx_api_f_4lxml_5etree_getNsTag)(PyObject *) = 0;
+#define getNsTag __pyx_api_f_4lxml_5etree_getNsTag
+static PyObject *(*__pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs)(PyObject *) = 0;
+#define getNsTagWithEmptyNs __pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs
+static PyObject *(*__pyx_api_f_4lxml_5etree_namespacedName)(xmlNode *) = 0;
+#define namespacedName __pyx_api_f_4lxml_5etree_namespacedName
+static PyObject *(*__pyx_api_f_4lxml_5etree_namespacedNameFromNsName)(const xmlChar *, const xmlChar *) = 0;
+#define namespacedNameFromNsName __pyx_api_f_4lxml_5etree_namespacedNameFromNsName
+static void (*__pyx_api_f_4lxml_5etree_iteratorStoreNext)(struct LxmlElementIterator *, struct LxmlElement *) = 0;
+#define iteratorStoreNext __pyx_api_f_4lxml_5etree_iteratorStoreNext
+static void (*__pyx_api_f_4lxml_5etree_initTagMatch)(struct LxmlElementTagMatcher *, PyObject *) = 0;
+#define initTagMatch __pyx_api_f_4lxml_5etree_initTagMatch
+static xmlNs *(*__pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix)(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define findOrBuildNodeNsPrefix __pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix
+static int __Pyx_ImportFunction_3_1_4(PyObject *module, const char *funcname, void (**f)(void), const char *sig);
+
+#ifndef __PYX_HAVE_RT_ImportFunction_3_1_4
+#define __PYX_HAVE_RT_ImportFunction_3_1_4
+static int __Pyx_ImportFunction_3_1_4(PyObject *module, const char *funcname, void (**f)(void), const char *sig) {
+    PyObject *d = 0;
+    PyObject *cobj = 0;
+    union {
+        void (*fp)(void);
+        void *p;
+    } tmp;
+    d = PyObject_GetAttrString(module, "__pyx_capi__");
+    if (!d)
+        goto bad;
+#if (defined(Py_LIMITED_API) && Py_LIMITED_API >= 0x030d0000) || (!defined(Py_LIMITED_API) && PY_VERSION_HEX >= 0x030d0000)
+    PyDict_GetItemStringRef(d, funcname, &cobj);
+#else
+    cobj = PyDict_GetItemString(d, funcname);
+    Py_XINCREF(cobj);
+#endif
+    if (!cobj) {
+        PyErr_Format(PyExc_ImportError,
+            "%.200s does not export expected C function %.200s",
+                PyModule_GetName(module), funcname);
+        goto bad;
+    }
+    if (!PyCapsule_IsValid(cobj, sig)) {
+        PyErr_Format(PyExc_TypeError,
+            "C function %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
+             PyModule_GetName(module), funcname, sig, PyCapsule_GetName(cobj));
+        goto bad;
+    }
+    tmp.p = PyCapsule_GetPointer(cobj, sig);
+    *f = tmp.fp;
+    if (!(*f))
+        goto bad;
+    Py_DECREF(d);
+    Py_DECREF(cobj);
+    return 0;
+bad:
+    Py_XDECREF(d);
+    Py_XDECREF(cobj);
+    return -1;
+}
+#endif
+
+
+static int import_lxml__etree(void) {
+  PyObject *module = 0;
+  module = PyImport_ImportModule("lxml.etree");
+  if (!module) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "deepcopyNodeToDocument", (void (**)(void))&__pyx_api_f_4lxml_5etree_deepcopyNodeToDocument, "struct LxmlElement *(struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "elementTreeFactory", (void (**)(void))&__pyx_api_f_4lxml_5etree_elementTreeFactory, "struct LxmlElementTree *(struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "newElementTree", (void (**)(void))&__pyx_api_f_4lxml_5etree_newElementTree, "struct LxmlElementTree *(struct LxmlElement *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "adoptExternalDocument", (void (**)(void))&__pyx_api_f_4lxml_5etree_adoptExternalDocument, "struct LxmlElementTree *(xmlDoc *, PyObject *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "elementFactory", (void (**)(void))&__pyx_api_f_4lxml_5etree_elementFactory, "struct LxmlElement *(struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "makeElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_makeElement, "struct LxmlElement *(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "makeSubElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_makeSubElement, "struct LxmlElement *(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "setElementClassLookupFunction", (void (**)(void))&__pyx_api_f_4lxml_5etree_setElementClassLookupFunction, "void (_element_class_lookup_function, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "lookupDefaultElementClass", (void (**)(void))&__pyx_api_f_4lxml_5etree_lookupDefaultElementClass, "PyObject *(PyObject *, PyObject *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "lookupNamespaceElementClass", (void (**)(void))&__pyx_api_f_4lxml_5etree_lookupNamespaceElementClass, "PyObject *(PyObject *, PyObject *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "callLookupFallback", (void (**)(void))&__pyx_api_f_4lxml_5etree_callLookupFallback, "PyObject *(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "tagMatches", (void (**)(void))&__pyx_api_f_4lxml_5etree_tagMatches, "int (xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "documentOrRaise", (void (**)(void))&__pyx_api_f_4lxml_5etree_documentOrRaise, "struct LxmlDocument *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "rootNodeOrRaise", (void (**)(void))&__pyx_api_f_4lxml_5etree_rootNodeOrRaise, "struct LxmlElement *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "hasText", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasText, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "hasTail", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasTail, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "textOf", (void (**)(void))&__pyx_api_f_4lxml_5etree_textOf, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "tailOf", (void (**)(void))&__pyx_api_f_4lxml_5etree_tailOf, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "setNodeText", (void (**)(void))&__pyx_api_f_4lxml_5etree_setNodeText, "int (xmlNode *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "setTailText", (void (**)(void))&__pyx_api_f_4lxml_5etree_setTailText, "int (xmlNode *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "attributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_attributeValue, "PyObject *(xmlNode *, xmlAttr *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "attributeValueFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_attributeValueFromNsName, "PyObject *(xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "getAttributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_getAttributeValue, "PyObject *(struct LxmlElement *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "iterattributes", (void (**)(void))&__pyx_api_f_4lxml_5etree_iterattributes, "PyObject *(struct LxmlElement *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "collectAttributes", (void (**)(void))&__pyx_api_f_4lxml_5etree_collectAttributes, "PyObject *(xmlNode *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "setAttributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_setAttributeValue, "int (struct LxmlElement *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "delAttribute", (void (**)(void))&__pyx_api_f_4lxml_5etree_delAttribute, "int (struct LxmlElement *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "delAttributeFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_delAttributeFromNsName, "int (xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "hasChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasChild, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "findChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChild, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "findChildForwards", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChildForwards, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "findChildBackwards", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChildBackwards, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "nextElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_nextElement, "xmlNode *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "previousElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_previousElement, "xmlNode *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "appendChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_appendChild, "void (struct LxmlElement *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "appendChildToElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_appendChildToElement, "int (struct LxmlElement *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "pyunicode", (void (**)(void))&__pyx_api_f_4lxml_5etree_pyunicode, "PyObject *(const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "utf8", (void (**)(void))&__pyx_api_f_4lxml_5etree_utf8, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "getNsTag", (void (**)(void))&__pyx_api_f_4lxml_5etree_getNsTag, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "getNsTagWithEmptyNs", (void (**)(void))&__pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "namespacedName", (void (**)(void))&__pyx_api_f_4lxml_5etree_namespacedName, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "namespacedNameFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_namespacedNameFromNsName, "PyObject *(const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "iteratorStoreNext", (void (**)(void))&__pyx_api_f_4lxml_5etree_iteratorStoreNext, "void (struct LxmlElementIterator *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "initTagMatch", (void (**)(void))&__pyx_api_f_4lxml_5etree_initTagMatch, "void (struct LxmlElementTagMatcher *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_1_4(module, "findOrBuildNodeNsPrefix", (void (**)(void))&__pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix, "xmlNs *(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  Py_DECREF(module); module = 0;
+  return 0;
+  bad:
+  Py_XDECREF(module);
+  return -1;
+}
+
+#endif /* !__PYX_HAVE_API__lxml__etree */

.venv/lib/python3.9/site-packages/lxml/extensions.pxi

@@ -0,0 +1,830 @@
+# support for extension functions in XPath and XSLT
+
+cdef class XPathError(LxmlError):
+    """Base class of all XPath errors.
+    """
+
+cdef class XPathEvalError(XPathError):
+    """Error during XPath evaluation.
+    """
+
+cdef class XPathFunctionError(XPathEvalError):
+    """Internal error looking up an XPath extension function.
+    """
+
+cdef class XPathResultError(XPathEvalError):
+    """Error handling an XPath result.
+    """
+
+
+# forward declarations
+
+ctypedef int (*_register_function)(void* ctxt, name_utf, ns_uri_utf)
+cdef class _ExsltRegExp
+
+################################################################################
+# Base class for XSLT and XPath evaluation contexts: functions, namespaces, ...
+
+@cython.internal
+cdef class _BaseContext:
+    cdef xpath.xmlXPathContext* _xpathCtxt
+    cdef _Document _doc
+    cdef dict _extensions
+    cdef list _namespaces
+    cdef list _global_namespaces
+    cdef dict _utf_refs
+    cdef dict _function_cache
+    cdef dict _eval_context_dict
+    cdef bint _build_smart_strings
+    # for exception handling and temporary reference keeping:
+    cdef _TempStore _temp_refs
+    cdef set _temp_documents
+    cdef _ExceptionContext _exc
+    cdef _ErrorLog _error_log
+
+    def __init__(self, namespaces, extensions, error_log, enable_regexp,
+                 build_smart_strings):
+        cdef _ExsltRegExp _regexp
+        cdef dict new_extensions
+        cdef list ns
+        self._utf_refs = {}
+        self._global_namespaces = []
+        self._function_cache = {}
+        self._eval_context_dict = None
+        self._error_log = error_log
+
+        if extensions is not None:
+            # convert extensions to UTF-8
+            if isinstance(extensions, dict):
+                extensions = (extensions,)
+            # format: [ {(ns, name):function} ] -> {(ns_utf, name_utf):function}
+            new_extensions = {}
+            for extension in extensions:
+                for (ns_uri, name), function in extension.items():
+                    if name is None:
+                        raise ValueError, "extensions must have non empty names"
+                    ns_utf   = self._to_utf(ns_uri)
+                    name_utf = self._to_utf(name)
+                    new_extensions[(ns_utf, name_utf)] = function
+            extensions = new_extensions or None
+
+        if namespaces is not None:
+            if isinstance(namespaces, dict):
+                namespaces = namespaces.items()
+            if namespaces:
+                ns = []
+                for prefix, ns_uri in namespaces:
+                    if prefix is None or not prefix:
+                        raise TypeError, \
+                            "empty namespace prefix is not supported in XPath"
+                    if ns_uri is None or not ns_uri:
+                        raise TypeError, \
+                            "setting default namespace is not supported in XPath"
+                    prefix_utf = self._to_utf(prefix)
+                    ns_uri_utf = self._to_utf(ns_uri)
+                    ns.append( (prefix_utf, ns_uri_utf) )
+                namespaces = ns
+            else:
+                namespaces = None
+
+        self._doc        = None
+        self._exc        = _ExceptionContext()
+        self._extensions = extensions
+        self._namespaces = namespaces
+        self._temp_refs  = _TempStore()
+        self._temp_documents  = set()
+        self._build_smart_strings = build_smart_strings
+
+        if enable_regexp:
+            _regexp = _ExsltRegExp()
+            _regexp._register_in_context(self)
+
+    cdef _BaseContext _copy(self):
+        cdef _BaseContext context
+        if self._namespaces is not None:
+            namespaces = self._namespaces[:]
+        else:
+            namespaces = None
+        context = self.__class__(namespaces, None, self._error_log, False,
+                                 self._build_smart_strings)
+        if self._extensions is not None:
+            context._extensions = self._extensions.copy()
+        return context
+
+    cdef bytes _to_utf(self, s):
+        "Convert to UTF-8 and keep a reference to the encoded string"
+        cdef python.PyObject* dict_result
+        if s is None:
+            return None
+        dict_result = python.PyDict_GetItem(self._utf_refs, s)
+        if dict_result is not NULL:
+            return <bytes>dict_result
+        utf = _utf8(s)
+        self._utf_refs[s] = utf
+        if python.IS_PYPY:
+            # use C level refs, PyPy refs are not enough!
+            python.Py_INCREF(utf)
+        return utf
+
+    cdef void _set_xpath_context(self, xpath.xmlXPathContext* xpathCtxt) noexcept:
+        self._xpathCtxt = xpathCtxt
+        xpathCtxt.userData = <void*>self
+        # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+        xpathCtxt.error = <xmlerror.xmlStructuredErrorFunc> _receiveXPathError
+
+    @cython.final
+    cdef _register_context(self, _Document doc):
+        self._doc = doc
+        self._exc.clear()
+
+    @cython.final
+    cdef _cleanup_context(self):
+        #xpath.xmlXPathRegisteredNsCleanup(self._xpathCtxt)
+        #self.unregisterGlobalNamespaces()
+        if python.IS_PYPY:
+            # clean up double refs in PyPy (see "_to_utf()" method)
+            for ref in self._utf_refs.itervalues():
+                python.Py_DECREF(ref)
+        self._utf_refs.clear()
+        self._eval_context_dict = None
+        self._doc = None
+
+    @cython.final
+    cdef _release_context(self):
+        if self._xpathCtxt is not NULL:
+            self._xpathCtxt.userData = NULL
+            self._xpathCtxt = NULL
+
+    # namespaces (internal UTF-8 methods with leading '_')
+
+    cdef addNamespace(self, prefix, ns_uri):
+        cdef list namespaces
+        if prefix is None:
+            raise TypeError, "empty prefix is not supported in XPath"
+        prefix_utf = self._to_utf(prefix)
+        ns_uri_utf = self._to_utf(ns_uri)
+        new_item = (prefix_utf, ns_uri_utf)
+        if self._namespaces is None:
+            self._namespaces = [new_item]
+        else:
+            namespaces = []
+            for item in self._namespaces:
+                if item[0] == prefix_utf:
+                    item = new_item
+                    new_item = None
+                namespaces.append(item)
+            if new_item is not None:
+                namespaces.append(new_item)
+            self._namespaces = namespaces
+        if self._xpathCtxt is not NULL:
+            xpath.xmlXPathRegisterNs(
+                self._xpathCtxt, _xcstr(prefix_utf), _xcstr(ns_uri_utf))
+
+    cdef registerNamespace(self, prefix, ns_uri):
+        if prefix is None:
+            raise TypeError, "empty prefix is not supported in XPath"
+        prefix_utf = self._to_utf(prefix)
+        ns_uri_utf = self._to_utf(ns_uri)
+        self._global_namespaces.append(prefix_utf)
+        xpath.xmlXPathRegisterNs(self._xpathCtxt,
+                                 _xcstr(prefix_utf), _xcstr(ns_uri_utf))
+
+    cdef registerLocalNamespaces(self):
+        if self._namespaces is None:
+            return
+        for prefix_utf, ns_uri_utf in self._namespaces:
+            xpath.xmlXPathRegisterNs(
+                self._xpathCtxt, _xcstr(prefix_utf), _xcstr(ns_uri_utf))
+
+    cdef registerGlobalNamespaces(self):
+        cdef list ns_prefixes = _find_all_extension_prefixes()
+        if python.PyList_GET_SIZE(ns_prefixes) > 0:
+            for prefix_utf, ns_uri_utf in ns_prefixes:
+                self._global_namespaces.append(prefix_utf)
+                xpath.xmlXPathRegisterNs(
+                    self._xpathCtxt, _xcstr(prefix_utf), _xcstr(ns_uri_utf))
+
+    cdef unregisterGlobalNamespaces(self):
+        if python.PyList_GET_SIZE(self._global_namespaces) > 0:
+            for prefix_utf in self._global_namespaces:
+                xpath.xmlXPathRegisterNs(self._xpathCtxt,
+                                         _xcstr(prefix_utf), NULL)
+            del self._global_namespaces[:]
+
+    cdef void _unregisterNamespace(self, prefix_utf) noexcept:
+        xpath.xmlXPathRegisterNs(self._xpathCtxt,
+                                 _xcstr(prefix_utf), NULL)
+
+    # extension functions
+
+    cdef int _addLocalExtensionFunction(self, ns_utf, name_utf, function) except -1:
+        if self._extensions is None:
+            self._extensions = {}
+        self._extensions[(ns_utf, name_utf)] = function
+        return 0
+
+    cdef registerGlobalFunctions(self, void* ctxt,
+                                 _register_function reg_func):
+        cdef python.PyObject* dict_result
+        cdef dict d
+        for ns_utf, ns_functions in __FUNCTION_NAMESPACE_REGISTRIES.iteritems():
+            dict_result = python.PyDict_GetItem(
+                self._function_cache, ns_utf)
+            if dict_result is not NULL:
+                d = <dict>dict_result
+            else:
+                d = {}
+                self._function_cache[ns_utf] = d
+            for name_utf, function in ns_functions.iteritems():
+                d[name_utf] = function
+                reg_func(ctxt, name_utf, ns_utf)
+
+    cdef registerLocalFunctions(self, void* ctxt,
+                                _register_function reg_func):
+        cdef python.PyObject* dict_result
+        cdef dict d
+        if self._extensions is None:
+            return # done
+        last_ns = None
+        d = None
+        for (ns_utf, name_utf), function in self._extensions.iteritems():
+            if ns_utf is not last_ns or d is None:
+                last_ns = ns_utf
+                dict_result = python.PyDict_GetItem(
+                    self._function_cache, ns_utf)
+                if dict_result is not NULL:
+                    d = <dict>dict_result
+                else:
+                    d = {}
+                    self._function_cache[ns_utf] = d
+            d[name_utf] = function
+            reg_func(ctxt, name_utf, ns_utf)
+
+    cdef unregisterAllFunctions(self, void* ctxt,
+                                      _register_function unreg_func):
+        for ns_utf, functions in self._function_cache.iteritems():
+            for name_utf in functions:
+                unreg_func(ctxt, name_utf, ns_utf)
+
+    cdef unregisterGlobalFunctions(self, void* ctxt,
+                                         _register_function unreg_func):
+        for ns_utf, functions in self._function_cache.items():
+            for name_utf in functions:
+                if self._extensions is None or \
+                       (ns_utf, name_utf) not in self._extensions:
+                    unreg_func(ctxt, name_utf, ns_utf)
+
+    @cython.final
+    cdef _find_cached_function(self, const_xmlChar* c_ns_uri, const_xmlChar* c_name):
+        """Lookup an extension function in the cache and return it.
+
+        Parameters: c_ns_uri may be NULL, c_name must not be NULL
+        """
+        cdef python.PyObject* c_dict
+        cdef python.PyObject* dict_result
+        c_dict = python.PyDict_GetItem(
+            self._function_cache, None if c_ns_uri is NULL else c_ns_uri)
+        if c_dict is not NULL:
+            dict_result = python.PyDict_GetItem(
+                <object>c_dict, <unsigned char*>c_name)
+            if dict_result is not NULL:
+                return <object>dict_result
+        return None
+
+    # Python access to the XPath context for extension functions
+
+    @property
+    def context_node(self):
+        cdef xmlNode* c_node
+        if self._xpathCtxt is NULL:
+            raise XPathError, \
+                "XPath context is only usable during the evaluation"
+        c_node = self._xpathCtxt.node
+        if c_node is NULL:
+            raise XPathError, "no context node"
+        if c_node.doc != self._xpathCtxt.doc:
+            raise XPathError, \
+                "document-external context nodes are not supported"
+        if self._doc is None:
+            raise XPathError, "document context is missing"
+        return _elementFactory(self._doc, c_node)
+
+    @property
+    def eval_context(self):
+        if self._eval_context_dict is None:
+            self._eval_context_dict = {}
+        return self._eval_context_dict
+
+    # Python reference keeping during XPath function evaluation
+
+    @cython.final
+    cdef _release_temp_refs(self):
+        "Free temporarily referenced objects from this context."
+        self._temp_refs.clear()
+        self._temp_documents.clear()
+
+    @cython.final
+    cdef _hold(self, obj):
+        """A way to temporarily hold references to nodes in the evaluator.
+
+        This is needed because otherwise nodes created in XPath extension
+        functions would be reference counted too soon, during the XPath
+        evaluation.  This is most important in the case of exceptions.
+        """
+        cdef _Element element
+        if isinstance(obj, _Element):
+            self._temp_refs.add(obj)
+            self._temp_documents.add((<_Element>obj)._doc)
+            return
+        elif _isString(obj) or not python.PySequence_Check(obj):
+            return
+        for o in obj:
+            if isinstance(o, _Element):
+                #print "Holding element:", <int>element._c_node
+                self._temp_refs.add(o)
+                #print "Holding document:", <int>element._doc._c_doc
+                self._temp_documents.add((<_Element>o)._doc)
+
+    @cython.final
+    cdef _Document _findDocumentForNode(self, xmlNode* c_node):
+        """If an XPath expression returns an element from a different
+        document than the current context document, we call this to
+        see if it was possibly created by an extension and is a known
+        document instance.
+        """
+        cdef _Document doc
+        for doc in self._temp_documents:
+            if doc is not None and doc._c_doc is c_node.doc:
+                return doc
+        return None
+
+
+# libxml2 keeps these error messages in a static array in its code
+# and doesn't give us access to them ...
+
+cdef tuple LIBXML2_XPATH_ERROR_MESSAGES = (
+    b"Ok",
+    b"Number encoding",
+    b"Unfinished literal",
+    b"Start of literal",
+    b"Expected $ for variable reference",
+    b"Undefined variable",
+    b"Invalid predicate",
+    b"Invalid expression",
+    b"Missing closing curly brace",
+    b"Unregistered function",
+    b"Invalid operand",
+    b"Invalid type",
+    b"Invalid number of arguments",
+    b"Invalid context size",
+    b"Invalid context position",
+    b"Memory allocation error",
+    b"Syntax error",
+    b"Resource error",
+    b"Sub resource error",
+    b"Undefined namespace prefix",
+    b"Encoding error",
+    b"Char out of XML range",
+    b"Invalid or incomplete context",
+    b"Stack usage error",
+    b"Forbidden variable\n",
+    b"?? Unknown error ??\n",
+)
+
+cdef void _forwardXPathError(void* c_ctxt, const xmlerror.xmlError* c_error) noexcept with gil:
+    cdef xmlerror.xmlError error
+    cdef int xpath_code
+    if c_error.message is not NULL:
+        error.message = c_error.message
+    else:
+        xpath_code = c_error.code - xmlerror.XML_XPATH_EXPRESSION_OK
+        if 0 <= xpath_code < len(LIBXML2_XPATH_ERROR_MESSAGES):
+            error.message = _cstr(LIBXML2_XPATH_ERROR_MESSAGES[xpath_code])
+        else:
+            error.message = b"unknown error"
+    error.domain = c_error.domain
+    error.code = c_error.code
+    error.level = c_error.level
+    error.line = c_error.line
+    error.int2 = c_error.int1 # column
+    error.file = c_error.file
+    error.node = NULL
+
+    (<_BaseContext>c_ctxt)._error_log._receive(&error)
+
+cdef void _receiveXPathError(void* c_context, const xmlerror.xmlError* error) noexcept nogil:
+    if not __DEBUG:
+        return
+    if c_context is NULL:
+        _forwardError(NULL, error)
+    else:
+        _forwardXPathError(c_context, error)
+
+
+def Extension(module, function_mapping=None, *, ns=None):
+    """Extension(module, function_mapping=None, ns=None)
+
+    Build a dictionary of extension functions from the functions
+    defined in a module or the methods of an object.
+
+    As second argument, you can pass an additional mapping of
+    attribute names to XPath function names, or a list of function
+    names that should be taken.
+
+    The ``ns`` keyword argument accepts a namespace URI for the XPath
+    functions.
+    """
+    cdef dict functions = {}
+    if isinstance(function_mapping, dict):
+        for function_name, xpath_name in function_mapping.items():
+            functions[(ns, xpath_name)] = getattr(module, function_name)
+    else:
+        if function_mapping is None:
+            function_mapping = [ name for name in dir(module)
+                                 if not name.startswith('_') ]
+        for function_name in function_mapping:
+            functions[(ns, function_name)] = getattr(module, function_name)
+    return functions
+
+################################################################################
+# EXSLT regexp implementation
+
+@cython.final
+@cython.internal
+cdef class _ExsltRegExp:
+    cdef dict _compile_map
+    def __cinit__(self):
+        self._compile_map = {}
+
+    cdef _make_string(self, value):
+        if _isString(value):
+            return value
+        elif isinstance(value, list):
+            # node set: take recursive text concatenation of first element
+            if python.PyList_GET_SIZE(value) == 0:
+                return ''
+            firstnode = value[0]
+            if _isString(firstnode):
+                return firstnode
+            elif isinstance(firstnode, _Element):
+                c_text = tree.xmlNodeGetContent((<_Element>firstnode)._c_node)
+                if c_text is NULL:
+                    raise MemoryError()
+                try:
+                    return funicode(c_text)
+                finally:
+                    tree.xmlFree(c_text)
+            else:
+                return unicode(firstnode)
+        else:
+            return unicode(value)
+
+    cdef _compile(self, rexp, ignore_case):
+        cdef python.PyObject* c_result
+        rexp = self._make_string(rexp)
+        key = (rexp, ignore_case)
+        c_result = python.PyDict_GetItem(self._compile_map, key)
+        if c_result is not NULL:
+            return <object>c_result
+        py_flags = re.UNICODE
+        if ignore_case:
+            py_flags = py_flags | re.IGNORECASE
+        rexp_compiled = re.compile(rexp, py_flags)
+        self._compile_map[key] = rexp_compiled
+        return rexp_compiled
+
+    def test(self, ctxt, s, rexp, flags=''):
+        flags = self._make_string(flags)
+        s = self._make_string(s)
+        rexpc = self._compile(rexp, 'i' in flags)
+        if rexpc.search(s) is None:
+            return False
+        else:
+            return True
+
+    def match(self, ctxt, s, rexp, flags=''):
+        cdef list result_list
+        flags = self._make_string(flags)
+        s = self._make_string(s)
+        rexpc = self._compile(rexp, 'i' in flags)
+        if 'g' in flags:
+            results = rexpc.findall(s)
+            if not results:
+                return ()
+        else:
+            result = rexpc.search(s)
+            if not result:
+                return ()
+            results = [ result.group() ]
+            results.extend( result.groups('') )
+        result_list = []
+        root = Element('matches')
+        for s_match in results:
+            if python.PyTuple_CheckExact(s_match):
+                s_match = ''.join(s_match)
+            elem = SubElement(root, 'match')
+            elem.text = s_match
+            result_list.append(elem)
+        return result_list
+
+    def replace(self, ctxt, s, rexp, flags, replacement):
+        replacement = self._make_string(replacement)
+        flags = self._make_string(flags)
+        s = self._make_string(s)
+        rexpc = self._compile(rexp, 'i' in flags)
+        count: object = 0 if 'g' in flags else 1
+        return rexpc.sub(replacement, s, count)
+
+    cdef _register_in_context(self, _BaseContext context):
+        ns = b"http://exslt.org/regular-expressions"
+        context._addLocalExtensionFunction(ns, b"test",    self.test)
+        context._addLocalExtensionFunction(ns, b"match",   self.match)
+        context._addLocalExtensionFunction(ns, b"replace", self.replace)
+
+
+################################################################################
+# helper functions
+
+cdef xpath.xmlXPathObject* _wrapXPathObject(object obj, _Document doc,
+                                            _BaseContext context) except NULL:
+    cdef xpath.xmlNodeSet* resultSet
+    cdef _Element fake_node = None
+    cdef xmlNode* c_node
+
+    if isinstance(obj, unicode):
+        obj = _utf8(obj)
+    if isinstance(obj, bytes):
+        # libxml2 copies the string value
+        return xpath.xmlXPathNewCString(_cstr(obj))
+    if isinstance(obj, bool):
+        return xpath.xmlXPathNewBoolean(obj)
+    if python.PyNumber_Check(obj):
+        return xpath.xmlXPathNewFloat(obj)
+    if obj is None:
+        resultSet = xpath.xmlXPathNodeSetCreate(NULL)
+    elif isinstance(obj, _Element):
+        resultSet = xpath.xmlXPathNodeSetCreate((<_Element>obj)._c_node)
+    elif python.PySequence_Check(obj):
+        resultSet = xpath.xmlXPathNodeSetCreate(NULL)
+        try:
+            for value in obj:
+                if isinstance(value, _Element):
+                    if context is not None:
+                        context._hold(value)
+                    xpath.xmlXPathNodeSetAdd(resultSet, (<_Element>value)._c_node)
+                else:
+                    if context is None or doc is None:
+                        raise XPathResultError, \
+                              f"Non-Element values not supported at this point - got {value!r}"
+                    # support strings by appending text nodes to an Element
+                    if isinstance(value, unicode):
+                        value = _utf8(value)
+                    if isinstance(value, bytes):
+                        if fake_node is None:
+                            fake_node = _makeElement("text-root", NULL, doc, None,
+                                                     None, None, None, None, None)
+                            context._hold(fake_node)
+                        else:
+                            # append a comment node to keep the text nodes separate
+                            c_node = tree.xmlNewDocComment(doc._c_doc, <unsigned char*>"")
+                            if c_node is NULL:
+                                raise MemoryError()
+                            tree.xmlAddChild(fake_node._c_node, c_node)
+                        context._hold(value)
+                        c_node = tree.xmlNewDocText(doc._c_doc, _xcstr(value))
+                        if c_node is NULL:
+                            raise MemoryError()
+                        tree.xmlAddChild(fake_node._c_node, c_node)
+                        xpath.xmlXPathNodeSetAdd(resultSet, c_node)
+                    else:
+                        raise XPathResultError, \
+                              f"This is not a supported node-set result: {value!r}"
+        except:
+            xpath.xmlXPathFreeNodeSet(resultSet)
+            raise
+    else:
+        raise XPathResultError, f"Unknown return type: {python._fqtypename(obj).decode('utf8')}"
+    return xpath.xmlXPathWrapNodeSet(resultSet)
+
+cdef object _unwrapXPathObject(xpath.xmlXPathObject* xpathObj,
+                               _Document doc, _BaseContext context):
+    if xpathObj.type == xpath.XPATH_UNDEFINED:
+        raise XPathResultError, "Undefined xpath result"
+    elif xpathObj.type == xpath.XPATH_NODESET:
+        return _createNodeSetResult(xpathObj, doc, context)
+    elif xpathObj.type == xpath.XPATH_BOOLEAN:
+        return xpathObj.boolval
+    elif xpathObj.type == xpath.XPATH_NUMBER:
+        return xpathObj.floatval
+    elif xpathObj.type == xpath.XPATH_STRING:
+        stringval = funicode(xpathObj.stringval)
+        if context._build_smart_strings:
+            stringval = _elementStringResultFactory(
+                stringval, None, None, False)
+        return stringval
+    elif xpathObj.type == xpath.XPATH_POINT:
+        raise NotImplementedError, "XPATH_POINT"
+    elif xpathObj.type == xpath.XPATH_RANGE:
+        raise NotImplementedError, "XPATH_RANGE"
+    elif xpathObj.type == xpath.XPATH_LOCATIONSET:
+        raise NotImplementedError, "XPATH_LOCATIONSET"
+    elif xpathObj.type == xpath.XPATH_USERS:
+        raise NotImplementedError, "XPATH_USERS"
+    elif xpathObj.type == xpath.XPATH_XSLT_TREE:
+        return _createNodeSetResult(xpathObj, doc, context)
+    else:
+        raise XPathResultError, f"Unknown xpath result {xpathObj.type}"
+
+cdef object _createNodeSetResult(xpath.xmlXPathObject* xpathObj, _Document doc,
+                                 _BaseContext context):
+    cdef xmlNode* c_node
+    cdef int i
+    cdef list result
+    result = []
+    if xpathObj.nodesetval is NULL:
+        return result
+    for i in range(xpathObj.nodesetval.nodeNr):
+        c_node = xpathObj.nodesetval.nodeTab[i]
+        _unpackNodeSetEntry(result, c_node, doc, context,
+                            xpathObj.type == xpath.XPATH_XSLT_TREE)
+    return result
+
+cdef _unpackNodeSetEntry(list results, xmlNode* c_node, _Document doc,
+                         _BaseContext context, bint is_fragment):
+    cdef xmlNode* c_child
+    if _isElement(c_node):
+        if c_node.doc != doc._c_doc and c_node.doc._private is NULL:
+            # XXX: works, but maybe not always the right thing to do?
+            # XPath: only runs when extensions create or copy trees
+            #        -> we store Python refs to these, so that is OK
+            # XSLT: can it leak when merging trees from multiple sources?
+            c_node = tree.xmlDocCopyNode(c_node, doc._c_doc, 1)
+            # FIXME: call _instantiateElementFromXPath() instead?
+        results.append(
+            _fakeDocElementFactory(doc, c_node))
+    elif c_node.type == tree.XML_TEXT_NODE or \
+             c_node.type == tree.XML_CDATA_SECTION_NODE or \
+             c_node.type == tree.XML_ATTRIBUTE_NODE:
+        results.append(
+            _buildElementStringResult(doc, c_node, context))
+    elif c_node.type == tree.XML_NAMESPACE_DECL:
+        results.append( (funicodeOrNone((<xmlNs*>c_node).prefix),
+                         funicodeOrNone((<xmlNs*>c_node).href)) )
+    elif c_node.type == tree.XML_DOCUMENT_NODE or \
+            c_node.type == tree.XML_HTML_DOCUMENT_NODE:
+        # ignored for everything but result tree fragments
+        if is_fragment:
+            c_child = c_node.children
+            while c_child is not NULL:
+                _unpackNodeSetEntry(results, c_child, doc, context, 0)
+                c_child = c_child.next
+    elif c_node.type == tree.XML_XINCLUDE_START or \
+            c_node.type == tree.XML_XINCLUDE_END:
+        pass
+    else:
+        raise NotImplementedError, \
+            f"Not yet implemented result node type: {c_node.type}"
+
+cdef void _freeXPathObject(xpath.xmlXPathObject* xpathObj) noexcept:
+    """Free the XPath object, but *never* free the *content* of node sets.
+    Python dealloc will do that for us.
+    """
+    if xpathObj.nodesetval is not NULL:
+        xpath.xmlXPathFreeNodeSet(xpathObj.nodesetval)
+        xpathObj.nodesetval = NULL
+    xpath.xmlXPathFreeObject(xpathObj)
+
+cdef _Element _instantiateElementFromXPath(xmlNode* c_node, _Document doc,
+                                           _BaseContext context):
+    # NOTE: this may copy the element - only call this when it can't leak
+    if c_node.doc != doc._c_doc and c_node.doc._private is NULL:
+        # not from the context document and not from a fake document
+        # either => may still be from a known document, e.g. one
+        # created by an extension function
+        node_doc = context._findDocumentForNode(c_node)
+        if node_doc is None:
+            # not from a known document at all! => can only make a
+            # safety copy here
+            c_node = tree.xmlDocCopyNode(c_node, doc._c_doc, 1)
+        else:
+            doc = node_doc
+    return _fakeDocElementFactory(doc, c_node)
+
+################################################################################
+# special str/unicode subclasses
+
+@cython.final
+cdef class _ElementUnicodeResult(unicode):
+    cdef _Element _parent
+    cdef readonly object attrname
+    cdef readonly bint is_tail
+
+    def getparent(self):
+        return self._parent
+
+    @property
+    def is_text(self):
+        return self._parent is not None and not (self.is_tail or self.attrname is not None)
+
+    @property
+    def is_attribute(self):
+        return self.attrname is not None
+
+cdef object _elementStringResultFactory(string_value, _Element parent,
+                                        attrname, bint is_tail):
+    result = _ElementUnicodeResult(string_value)
+    result._parent = parent
+    result.is_tail = is_tail
+    result.attrname = attrname
+    return result
+
+cdef object _buildElementStringResult(_Document doc, xmlNode* c_node,
+                                      _BaseContext context):
+    cdef _Element parent = None
+    cdef object attrname = None
+    cdef xmlNode* c_element
+    cdef bint is_tail
+
+    if c_node.type == tree.XML_ATTRIBUTE_NODE:
+        attrname = _namespacedName(c_node)
+        is_tail = 0
+        s = tree.xmlNodeGetContent(c_node)
+        try:
+            value = funicode(s)
+        finally:
+            tree.xmlFree(s)
+        c_element = NULL
+    else:
+        #assert c_node.type == tree.XML_TEXT_NODE or c_node.type == tree.XML_CDATA_SECTION_NODE, "invalid node type"
+        # may be tail text or normal text
+        value = funicode(c_node.content)
+        c_element = _previousElement(c_node)
+        is_tail = c_element is not NULL
+
+    if not context._build_smart_strings:
+        return value
+
+    if c_element is NULL:
+        # non-tail text or attribute text
+        c_element = c_node.parent
+        while c_element is not NULL and not _isElement(c_element):
+            c_element = c_element.parent
+
+    if c_element is not NULL:
+        parent = _instantiateElementFromXPath(c_element, doc, context)
+
+    return _elementStringResultFactory(
+        value, parent, attrname, is_tail)
+
+################################################################################
+# callbacks for XPath/XSLT extension functions
+
+cdef void _extension_function_call(_BaseContext context, function,
+                                   xpath.xmlXPathParserContext* ctxt, int nargs) noexcept:
+    cdef _Document doc
+    cdef xpath.xmlXPathObject* obj
+    cdef list args
+    cdef int i
+    doc = context._doc
+    try:
+        args = []
+        for i in range(nargs):
+            obj = xpath.valuePop(ctxt)
+            o = _unwrapXPathObject(obj, doc, context)
+            _freeXPathObject(obj)
+            args.append(o)
+        args.reverse()
+
+        res = function(context, *args)
+        # wrap result for XPath consumption
+        obj = _wrapXPathObject(res, doc, context)
+        # prevent Python from deallocating elements handed to libxml2
+        context._hold(res)
+        xpath.valuePush(ctxt, obj)
+    except:
+        xpath.xmlXPathErr(ctxt, xpath.XPATH_EXPR_ERROR)
+        context._exc._store_raised()
+    finally:
+        return  # swallow any further exceptions
+
+# lookup the function by name and call it
+
+cdef void _xpath_function_call(xpath.xmlXPathParserContext* ctxt,
+                               int nargs) noexcept with gil:
+    cdef _BaseContext context
+    cdef xpath.xmlXPathContext* rctxt = ctxt.context
+    context = <_BaseContext> rctxt.userData
+    try:
+        function = context._find_cached_function(rctxt.functionURI, rctxt.function)
+        if function is not None:
+            _extension_function_call(context, function, ctxt, nargs)
+        else:
+            xpath.xmlXPathErr(ctxt, xpath.XPATH_UNKNOWN_FUNC_ERROR)
+            context._exc._store_exception(XPathFunctionError(
+                f"XPath function '{_namespacedNameFromNsName(rctxt.functionURI, rctxt.function)}' not found"))
+    except:
+        # may not be the right error, but we need to tell libxml2 *something*
+        xpath.xmlXPathErr(ctxt, xpath.XPATH_UNKNOWN_FUNC_ERROR)
+        context._exc._store_raised()
+    finally:
+        return  # swallow any further exceptions

.venv/lib/python3.9/site-packages/lxml/html/ElementSoup.py

@@ -0,0 +1,10 @@
+__doc__ = """Legacy interface to the BeautifulSoup HTML parser.
+"""
+
+__all__ = ["parse", "convert_tree"]
+
+from .soupparser import convert_tree, parse as _parse
+
+def parse(file, beautifulsoup=None, makeelement=None):
+    root = _parse(file, beautifulsoup=beautifulsoup, makeelement=makeelement)
+    return root.getroot()

.venv/lib/python3.9/site-packages/lxml/html/_diffcommand.py

@@ -0,0 +1,86 @@
+import optparse
+import sys
+import re
+import os
+from .diff import htmldiff
+
+description = """\
+"""
+
+parser = optparse.OptionParser(
+    usage="%prog [OPTIONS] FILE1 FILE2\n"
+    "%prog --annotate [OPTIONS] INFO1 FILE1 INFO2 FILE2 ...",
+    description=description,
+    )
+
+parser.add_option(
+    '-o', '--output',
+    metavar="FILE",
+    dest="output",
+    default="-",
+    help="File to write the difference to",
+    )
+
+parser.add_option(
+    '-a', '--annotation',
+    action="store_true",
+    dest="annotation",
+    help="Do an annotation")
+
+def main(args=None):
+    if args is None:
+        args = sys.argv[1:]
+    options, args = parser.parse_args(args)
+    if options.annotation:
+        return annotate(options, args)
+    if len(args) != 2:
+        print('Error: you must give two files')
+        parser.print_help()
+        sys.exit(1)
+    file1, file2 = args
+    input1 = read_file(file1)
+    input2 = read_file(file2)
+    body1 = split_body(input1)[1]
+    pre, body2, post = split_body(input2)
+    result = htmldiff(body1, body2)
+    result = pre + result + post
+    if options.output == '-':
+        if not result.endswith('\n'):
+            result += '\n'
+        sys.stdout.write(result)
+    else:
+        with open(options.output, 'wb') as f:
+            f.write(result)
+
+def read_file(filename):
+    if filename == '-':
+        c = sys.stdin.read()
+    elif not os.path.exists(filename):
+        raise OSError(
+            "Input file %s does not exist" % filename)
+    else:
+        with open(filename, 'rb') as f:
+            c = f.read()
+    return c
+
+body_start_re = re.compile(
+    r"<body.*?>", re.I|re.S)
+body_end_re = re.compile(
+    r"</body.*?>", re.I|re.S)
+    
+def split_body(html):
+    pre = post = ''
+    match = body_start_re.search(html)
+    if match:
+        pre = html[:match.end()]
+        html = html[match.end():]
+    match = body_end_re.search(html)
+    if match:
+        post = html[match.start():]
+        html = html[:match.start()]
+    return pre, html, post
+
+def annotate(options, args):
+    print("Not yet implemented")
+    sys.exit(1)
+    

.venv/lib/python3.9/site-packages/lxml/html/_html5builder.py

@@ -0,0 +1,100 @@
+"""
+Legacy module - don't use in new code!
+
+html5lib now has its own proper implementation.
+
+This module implements a tree builder for html5lib that generates lxml
+html element trees.  This module uses camelCase as it follows the
+html5lib style guide.
+"""
+
+from html5lib.treebuilders import _base, etree as etree_builders
+from lxml import html, etree
+
+
+class DocumentType:
+
+    def __init__(self, name, publicId, systemId):
+        self.name = name
+        self.publicId = publicId
+        self.systemId = systemId
+
+class Document:
+
+    def __init__(self):
+        self._elementTree = None
+        self.childNodes = []
+
+    def appendChild(self, element):
+        self._elementTree.getroot().addnext(element._element)
+
+
+class TreeBuilder(_base.TreeBuilder):
+    documentClass = Document
+    doctypeClass = DocumentType
+    elementClass = None
+    commentClass = None
+    fragmentClass = Document
+
+    def __init__(self, *args, **kwargs):
+        html_builder = etree_builders.getETreeModule(html, fullTree=False)
+        etree_builder = etree_builders.getETreeModule(etree, fullTree=False)
+        self.elementClass = html_builder.Element
+        self.commentClass = etree_builder.Comment
+        _base.TreeBuilder.__init__(self, *args, **kwargs)
+
+    def reset(self):
+        _base.TreeBuilder.reset(self)
+        self.rootInserted = False
+        self.initialComments = []
+        self.doctype = None
+
+    def getDocument(self):
+        return self.document._elementTree
+
+    def getFragment(self):
+        fragment = []
+        element = self.openElements[0]._element
+        if element.text:
+            fragment.append(element.text)
+        fragment.extend(element.getchildren())
+        if element.tail:
+            fragment.append(element.tail)
+        return fragment
+
+    def insertDoctype(self, name, publicId, systemId):
+        doctype = self.doctypeClass(name, publicId, systemId)
+        self.doctype = doctype
+
+    def insertComment(self, data, parent=None):
+        if not self.rootInserted:
+            self.initialComments.append(data)
+        else:
+            _base.TreeBuilder.insertComment(self, data, parent)
+
+    def insertRoot(self, name):
+        buf = []
+        if self.doctype and self.doctype.name:
+            buf.append('<!DOCTYPE %s' % self.doctype.name)
+            if self.doctype.publicId is not None or self.doctype.systemId is not None:
+                buf.append(' PUBLIC "%s" "%s"' % (self.doctype.publicId,
+                                                  self.doctype.systemId))
+            buf.append('>')
+        buf.append('<html></html>')
+        root = html.fromstring(''.join(buf))
+
+        # Append the initial comments:
+        for comment in self.initialComments:
+            root.addprevious(etree.Comment(comment))
+
+        # Create the root document and add the ElementTree to it
+        self.document = self.documentClass()
+        self.document._elementTree = root.getroottree()
+
+        # Add the root element to the internal child/open data structures
+        root_element = self.elementClass(name)
+        root_element._element = root
+        self.document.childNodes.append(root_element)
+        self.openElements.append(root_element)
+
+        self.rootInserted = True

.venv/lib/python3.9/site-packages/lxml/html/_setmixin.py

@@ -0,0 +1,56 @@
+try:
+    from collections.abc import MutableSet
+except ImportError:
+    from collections.abc import MutableSet
+
+
+class SetMixin(MutableSet):
+
+    """
+    Mix-in for sets.  You must define __iter__, add, remove
+    """
+
+    def __len__(self):
+        length = 0
+        for item in self:
+            length += 1
+        return length
+
+    def __contains__(self, item):
+        for has_item in self:
+            if item == has_item:
+                return True
+        return False
+
+    issubset = MutableSet.__le__
+    issuperset = MutableSet.__ge__
+
+    union = MutableSet.__or__
+    intersection = MutableSet.__and__
+    difference = MutableSet.__sub__
+    symmetric_difference = MutableSet.__xor__
+
+    def copy(self):
+        return set(self)
+
+    def update(self, other):
+        self |= other
+
+    def intersection_update(self, other):
+        self &= other
+
+    def difference_update(self, other):
+        self -= other
+
+    def symmetric_difference_update(self, other):
+        self ^= other
+
+    def discard(self, item):
+        try:
+            self.remove(item)
+        except KeyError:
+            pass
+
+    @classmethod
+    def _from_iterable(cls, it):
+        return set(it)

.venv/lib/python3.9/site-packages/lxml/html/builder.py

@@ -0,0 +1,173 @@
+# --------------------------------------------------------------------
+# The ElementTree toolkit is
+# Copyright (c) 1999-2004 by Fredrik Lundh
+# --------------------------------------------------------------------
+
+"""
+A set of HTML generator tags for building HTML documents.
+
+Usage::
+
+    >>> from lxml.html.builder import *
+    >>> html = HTML(
+    ...            HEAD( TITLE("Hello World") ),
+    ...            BODY( CLASS("main"),
+    ...                  H1("Hello World !")
+    ...            )
+    ...        )
+
+    >>> import lxml.etree
+    >>> print lxml.etree.tostring(html, pretty_print=True)
+    <html>
+      <head>
+        <title>Hello World</title>
+      </head>
+      <body class="main">
+        <h1>Hello World !</h1>
+      </body>
+    </html>
+
+"""
+
+from lxml.builder import ElementMaker
+from lxml.html import html_parser
+
+E = ElementMaker(makeelement=html_parser.makeelement)
+
+# elements
+A = E.a  #: anchor
+ABBR = E.abbr  #: abbreviated form (e.g., WWW, HTTP, etc.)
+ACRONYM = E.acronym  #: 
+ADDRESS = E.address  #: information on author
+APPLET = E.applet  #: Java applet (DEPRECATED)
+AREA = E.area  #: client-side image map area
+ARTICLE = E.article  #: self-contained article
+ASIDE = E.aside  #: indirectly-related content
+AUDIO = E.audio  #: embedded audio file
+B = E.b  #: bold text style
+BASE = E.base  #: document base URI
+BASEFONT = E.basefont  #: base font size (DEPRECATED)
+BDI = E.bdi  #: isolate bidirectional text
+BDO = E.bdo  #: I18N BiDi over-ride
+BIG = E.big  #: large text style
+BLOCKQUOTE = E.blockquote  #: long quotation
+BODY = E.body  #: document body
+BR = E.br  #: forced line break
+BUTTON = E.button  #: push button
+CANVAS = E.canvas  #: scriptable graphics container
+CAPTION = E.caption  #: table caption
+CENTER = E.center  #: shorthand for DIV align=center (DEPRECATED)
+CITE = E.cite  #: citation
+CODE = E.code  #: computer code fragment
+COL = E.col  #: table column
+COLGROUP = E.colgroup  #: table column group
+DATA = E.data  #: machine-readable translation
+DATALIST = E.datalist  #: list of options for an input
+DD = E.dd  #: definition description
+DEL = getattr(E, 'del')  #: deleted text
+DETAILS = E.details  #: expandable section
+DFN = E.dfn  #: instance definition
+DIALOG = E.dialog  #: dialog box
+DIR = E.dir  #: directory list (DEPRECATED)
+DIV = E.div  #: generic language/style container
+DL = E.dl  #: definition list
+DT = E.dt  #: definition term
+EM = E.em  #: emphasis
+EMBED = E.embed  #: embedded external content
+FIELDSET = E.fieldset  #: form control group
+FIGCAPTION = E.figcaption  #: figure caption
+FIGURE = E.figure  #: self-contained, possibly-captioned content
+FONT = E.font  #: local change to font (DEPRECATED)
+FOOTER = E.footer  #: footer for nearest ancestor
+FORM = E.form  #: interactive form
+FRAME = E.frame  #: subwindow
+FRAMESET = E.frameset  #: window subdivision
+H1 = E.h1  #: heading
+H2 = E.h2  #: heading
+H3 = E.h3  #: heading
+H4 = E.h4  #: heading
+H5 = E.h5  #: heading
+H6 = E.h6  #: heading
+HEAD = E.head  #: document head
+HEADER = E.header  #: heading content
+HGROUP = E.hgroup  #: heading group
+HR = E.hr  #: horizontal rule
+HTML = E.html  #: document root element
+I = E.i  #: italic text style
+IFRAME = E.iframe  #: inline subwindow
+IMG = E.img  #: Embedded image
+INPUT = E.input  #: form control
+INS = E.ins  #: inserted text
+ISINDEX = E.isindex  #: single line prompt (DEPRECATED)
+KBD = E.kbd  #: text to be entered by the user
+LABEL = E.label  #: form field label text
+LEGEND = E.legend  #: fieldset legend
+LI = E.li  #: list item
+LINK = E.link  #: a media-independent link
+MAIN = E.main  #: main content
+MAP = E.map  #: client-side image map
+MARK = E.mark  #: marked/highlighted text
+MARQUEE = E.marquee  #: scrolling text
+MENU = E.menu  #: menu list (DEPRECATED)
+META = E.meta  #: generic metainformation
+METER = E.meter  #: numerical value display
+NAV = E.nav  #: navigation section
+NOBR = E.nobr  #: prevent wrapping
+NOFRAMES = E.noframes  #: alternate content container for non frame-based rendering
+NOSCRIPT = E.noscript  #: alternate content container for non script-based rendering
+OBJECT = E.object  #: generic embedded object
+OL = E.ol  #: ordered list
+OPTGROUP = E.optgroup  #: option group
+OPTION = E.option  #: selectable choice
+OUTPUT = E.output  #: result of a calculation
+P = E.p  #: paragraph
+PARAM = E.param  #: named property value
+PICTURE = E.picture  #: picture with multiple sources
+PORTAL = E.portal  #: embedded preview
+PRE = E.pre  #: preformatted text
+PROGRESS = E.progress  #: progress bar
+Q = E.q  #: short inline quotation
+RB = E.rb  #: ruby base text
+RP = E.rp  #: ruby parentheses
+RT = E.rt  #: ruby text component
+RTC = E.rtc  #: ruby semantic annotation
+RUBY = E.ruby  #: ruby annotations
+S = E.s  #: strike-through text style (DEPRECATED)
+SAMP = E.samp  #: sample program output, scripts, etc.
+SCRIPT = E.script  #: script statements
+SEARCH = E.search  #: set of form controls for a search
+SECTION = E.section  #: generic standalone section
+SELECT = E.select  #: option selector
+SLOT = E.slot  #: placeholder for JS use
+SMALL = E.small  #: small text style
+SOURCE = E.source  #: source for picture/audio/video element
+SPAN = E.span  #: generic language/style container
+STRIKE = E.strike  #: strike-through text (DEPRECATED)
+STRONG = E.strong  #: strong emphasis
+STYLE = E.style  #: style info
+SUB = E.sub  #: subscript
+SUMMARY = E.summary  #: summary for <details>
+SUP = E.sup  #: superscript
+TABLE = E.table  #: 
+TBODY = E.tbody  #: table body
+TD = E.td  #: table data cell
+TEMPLATE = E.template  #: fragment for JS use
+TEXTAREA = E.textarea  #: multi-line text field
+TFOOT = E.tfoot  #: table footer
+TH = E.th  #: table header cell
+THEAD = E.thead  #: table header
+TIME = E.time  #: date/time
+TITLE = E.title  #: document title
+TR = E.tr  #: table row
+TRACK = E.track  #: audio/video track
+TT = E.tt  #: teletype or monospaced text style
+U = E.u  #: underlined text style (DEPRECATED)
+UL = E.ul  #: unordered list
+VAR = E.var  #: instance of a variable or program argument
+VIDEO = E.video  #: embedded video file
+WBR = E.wbr  #: word break
+
+# attributes (only reserved words are included here)
+ATTR = dict
+def CLASS(v): return {'class': v}
+def FOR(v): return {'for': v}

.venv/lib/python3.9/site-packages/lxml/html/clean.py

@@ -0,0 +1,21 @@
+# cython: language_level=3str
+
+"""Backward-compatibility module for lxml_html_clean"""
+
+try:
+    from lxml_html_clean import *
+
+    __all__ = [
+        "clean_html",
+        "clean",
+        "Cleaner",
+        "autolink",
+        "autolink_html",
+        "word_break",
+        "word_break_html",
+    ]
+except ImportError:
+    raise ImportError(
+        "lxml.html.clean module is now a separate project lxml_html_clean.\n"
+        "Install lxml[html_clean] or lxml_html_clean directly."
+    ) from None

.venv/lib/python3.9/site-packages/lxml/html/defs.py

@@ -0,0 +1,135 @@
+# FIXME: this should all be confirmed against what a DTD says
+# (probably in a test; this may not match the DTD exactly, but we
+# should document just how it differs).
+
+"""
+Data taken from https://www.w3.org/TR/html401/index/elements.html
+and https://html.spec.whatwg.org/multipage/syntax.html#elements-2
+for html5_tags.
+"""
+
+empty_tags = frozenset([
+    'area', 'base', 'basefont', 'br', 'col', 'embed', 'frame', 'hr',
+    'img', 'input', 'isindex', 'link', 'meta', 'param', 'source', 'track', 'wbr'])
+
+deprecated_tags = frozenset([
+    'applet', 'basefont', 'center', 'dir', 'font', 'isindex',
+    'menu', 's', 'strike', 'u'])
+
+# archive actually takes a space-separated list of URIs
+link_attrs = frozenset([
+    'action', 'archive', 'background', 'cite', 'classid',
+    'codebase', 'data', 'href', 'longdesc', 'profile', 'src',
+    'usemap',
+    # Not standard:
+    'dynsrc', 'lowsrc',
+    # HTML5 formaction
+    'formaction'
+    ])
+
+# Not in the HTML 4 spec:
+# onerror, onresize
+event_attrs = frozenset([
+    'onblur', 'onchange', 'onclick', 'ondblclick', 'onerror',
+    'onfocus', 'onkeydown', 'onkeypress', 'onkeyup', 'onload',
+    'onmousedown', 'onmousemove', 'onmouseout', 'onmouseover',
+    'onmouseup', 'onreset', 'onresize', 'onselect', 'onsubmit',
+    'onunload',
+    ])
+
+safe_attrs = frozenset([
+    'abbr', 'accept', 'accept-charset', 'accesskey', 'action', 'align',
+    'alt', 'axis', 'border', 'cellpadding', 'cellspacing', 'char', 'charoff',
+    'charset', 'checked', 'cite', 'class', 'clear', 'cols', 'colspan',
+    'color', 'compact', 'coords', 'datetime', 'dir', 'disabled', 'enctype',
+    'for', 'frame', 'headers', 'height', 'href', 'hreflang', 'hspace', 'id',
+    'ismap', 'label', 'lang', 'longdesc', 'maxlength', 'media', 'method',
+    'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'prompt', 'readonly',
+    'rel', 'rev', 'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape',
+    'size', 'span', 'src', 'start', 'summary', 'tabindex', 'target', 'title',
+    'type', 'usemap', 'valign', 'value', 'vspace', 'width'])
+
+# From http://htmlhelp.com/reference/html40/olist.html
+top_level_tags = frozenset([
+    'html', 'head', 'body', 'frameset',
+    ])
+
+head_tags = frozenset([
+    'base', 'isindex', 'link', 'meta', 'script', 'style', 'title',
+    ])
+
+general_block_tags = frozenset([
+    'address',
+    'blockquote',
+    'center',
+    'del',
+    'div',
+    'h1',
+    'h2',
+    'h3',
+    'h4',
+    'h5',
+    'h6',
+    'hr',
+    'ins',
+    'isindex',
+    'noscript',
+    'p',
+    'pre',
+    ])
+
+list_tags = frozenset([
+    'dir', 'dl', 'dt', 'dd', 'li', 'menu', 'ol', 'ul',
+    ])
+
+table_tags = frozenset([
+    'table', 'caption', 'colgroup', 'col',
+    'thead', 'tfoot', 'tbody', 'tr', 'td', 'th',
+    ])
+
+# just this one from
+# http://www.georgehernandez.com/h/XComputers/HTML/2BlockLevel.htm
+block_tags = general_block_tags | list_tags | table_tags | frozenset([
+    # Partial form tags
+    'fieldset', 'form', 'legend', 'optgroup', 'option',
+    ])
+
+form_tags = frozenset([
+    'form', 'button', 'fieldset', 'legend', 'input', 'label',
+    'select', 'optgroup', 'option', 'textarea',
+    ])
+
+special_inline_tags = frozenset([
+    'a', 'applet', 'basefont', 'bdo', 'br', 'embed', 'font', 'iframe',
+    'img', 'map', 'area', 'object', 'param', 'q', 'script',
+    'span', 'sub', 'sup',
+    ])
+
+phrase_tags = frozenset([
+    'abbr', 'acronym', 'cite', 'code', 'del', 'dfn', 'em',
+    'ins', 'kbd', 'samp', 'strong', 'var',
+    ])
+
+font_style_tags = frozenset([
+    'b', 'big', 'i', 's', 'small', 'strike', 'tt', 'u',
+    ])
+
+frame_tags = frozenset([
+    'frameset', 'frame', 'noframes',
+    ])
+    
+html5_tags = frozenset([
+    'article', 'aside', 'audio', 'canvas', 'command', 'datalist',
+    'details', 'embed', 'figcaption', 'figure', 'footer', 'header',
+    'hgroup', 'keygen', 'mark', 'math', 'meter', 'nav', 'output',
+    'progress', 'rp', 'rt', 'ruby', 'section', 'source', 'summary',
+    'svg', 'time', 'track', 'video', 'wbr'
+    ])
+
+# These tags aren't standard
+nonstandard_tags = frozenset(['blink', 'marquee'])
+
+
+tags = (top_level_tags | head_tags | general_block_tags | list_tags
+        | table_tags | form_tags | special_inline_tags | phrase_tags
+        | font_style_tags | nonstandard_tags | html5_tags)

.venv/lib/python3.9/site-packages/lxml/html/diff.py

@@ -0,0 +1,972 @@
+# cython: language_level=3
+
+try:
+    import cython
+except ImportError:
+    class fake_cython:
+        compiled = False
+        def cfunc(self, func): return func
+        def cclass(self, func): return func
+        def declare(self, _, value): return value
+        def __getattr__(self, type_name): return "object"
+
+    cython = fake_cython()
+
+try:
+    from . import _difflib as difflib
+    import inspect
+    if inspect.isfunction(difflib.get_close_matches):
+        raise ImportError(
+            "Embedded difflib is not compiled to a fast binary, using the stdlib instead.")
+    from cython.cimports.lxml.html._difflib import SequenceMatcher
+except ImportError:
+    import difflib
+    if not cython.compiled:
+        from difflib import SequenceMatcher
+
+import itertools
+import functools
+import operator
+import re
+
+from lxml import etree
+from lxml.html import fragment_fromstring
+from . import defs
+
+__all__ = ['html_annotate', 'htmldiff']
+
+group_by_first_item = functools.partial(itertools.groupby, key=operator.itemgetter(0))
+
+
+############################################################
+## Annotation
+############################################################
+
+@cython.cfunc
+def html_escape(text: str, _escapes: tuple = ('&', '<', '>', '"', ''')) -> str:
+    # Not so slow compiled version of 'html.escape()'.
+    # Most of the time, we replace little to nothing, so use a fast decision what needs to be done.
+    ch: cython.Py_UCS4
+    replace: cython.char[5] = [False] * 5
+    for ch in text:
+        replace[0] |= ch == '&'
+        replace[1] |= ch == '<'
+        replace[2] |= ch == '>'
+        replace[3] |= ch == '"'
+        replace[4] |= ch == "'"
+
+    for i in range(5):
+        if replace[i]:
+            text = text.replace('&<>"\''[i], _escapes[i])
+
+    return text
+
+
+if not cython.compiled:
+    from html import escape as html_escape
+
+
+def default_markup(text, version):
+    return '<span title="%s">%s</span>' % (
+        html_escape(version), text)
+
+def html_annotate(doclist, markup=default_markup):
+    """
+    doclist should be ordered from oldest to newest, like::
+
+        >>> version1 = 'Hello World'
+        >>> version2 = 'Goodbye World'
+        >>> print(html_annotate([(version1, 'version 1'),
+        ...                      (version2, 'version 2')]))
+        <span title="version 2">Goodbye</span> <span title="version 1">World</span>
+
+    The documents must be *fragments* (str/UTF8 or unicode), not
+    complete documents
+
+    The markup argument is a function to markup the spans of words.
+    This function is called like markup('Hello', 'version 2'), and
+    returns HTML.  The first argument is text and never includes any
+    markup.  The default uses a span with a title:
+
+        >>> print(default_markup('Some Text', 'by Joe'))
+        <span title="by Joe">Some Text</span>
+    """
+    # The basic strategy we have is to split the documents up into
+    # logical tokens (which are words with attached markup).  We then
+    # do diffs of each of the versions to track when a token first
+    # appeared in the document; the annotation attached to the token
+    # is the version where it first appeared.
+    tokenlist = [tokenize_annotated(doc, version)
+                 for doc, version in doclist]
+    cur_tokens = tokenlist[0]
+    for tokens in tokenlist[1:]:
+        html_annotate_merge_annotations(cur_tokens, tokens)
+        cur_tokens = tokens
+
+    # After we've tracked all the tokens, we can combine spans of text
+    # that are adjacent and have the same annotation
+    cur_tokens = compress_tokens(cur_tokens)
+    # And finally add markup
+    result = markup_serialize_tokens(cur_tokens, markup)
+    return ''.join(result).strip()
+
+def tokenize_annotated(doc, annotation):
+    """Tokenize a document and add an annotation attribute to each token
+    """
+    tokens = tokenize(doc, include_hrefs=False)
+    for tok in tokens:
+        tok.annotation = annotation
+    return tokens
+
+def html_annotate_merge_annotations(tokens_old, tokens_new):
+    """Merge the annotations from tokens_old into tokens_new, when the
+    tokens in the new document already existed in the old document.
+    """
+    s = InsensitiveSequenceMatcher(a=tokens_old, b=tokens_new)
+    commands = s.get_opcodes()
+
+    for command, i1, i2, j1, j2 in commands:
+        if command == 'equal':
+            eq_old = tokens_old[i1:i2]
+            eq_new = tokens_new[j1:j2]
+            copy_annotations(eq_old, eq_new)
+
+def copy_annotations(src, dest):
+    """
+    Copy annotations from the tokens listed in src to the tokens in dest
+    """
+    assert len(src) == len(dest)
+    for src_tok, dest_tok in zip(src, dest):
+        dest_tok.annotation = src_tok.annotation
+
+def compress_tokens(tokens):
+    """
+    Combine adjacent tokens when there is no HTML between the tokens,
+    and they share an annotation
+    """
+    result = [tokens[0]]
+    for tok in tokens[1:]:
+        if (not tok.pre_tags and
+                not result[-1].post_tags and
+                result[-1].annotation == tok.annotation):
+            compress_merge_back(result, tok)
+        else:
+            result.append(tok)
+    return result
+
+@cython.cfunc
+def compress_merge_back(tokens: list, tok):
+    """ Merge tok into the last element of tokens (modifying the list of
+    tokens in-place).  """
+    last = tokens[-1]
+    if type(last) is not token or type(tok) is not token:
+        tokens.append(tok)
+    else:
+        text = last + last.trailing_whitespace + tok
+        merged = token(text,
+                       pre_tags=last.pre_tags,
+                       post_tags=tok.post_tags,
+                       trailing_whitespace=tok.trailing_whitespace)
+        merged.annotation = last.annotation
+        tokens[-1] = merged
+
+def markup_serialize_tokens(tokens, markup_func):
+    """
+    Serialize the list of tokens into a list of text chunks, calling
+    markup_func around text to add annotations.
+    """
+    for token in tokens:
+        yield from token.pre_tags
+        html = token.html()
+        html = markup_func(html, token.annotation) + token.trailing_whitespace
+        yield html
+        yield from token.post_tags
+
+
+############################################################
+## HTML Diffs
+############################################################
+
+def htmldiff(old_html, new_html):
+    ## FIXME: this should take parsed documents too, and use their body
+    ## or other content.
+    """ Do a diff of the old and new document.  The documents are HTML
+    *fragments* (str/UTF8 or unicode), they are not complete documents
+    (i.e., no <html> tag).
+
+    Returns HTML with <ins> and <del> tags added around the
+    appropriate text.
+
+    Markup is generally ignored, with the markup from new_html
+    preserved, and possibly some markup from old_html (though it is
+    considered acceptable to lose some of the old markup).  Only the
+    words in the HTML are diffed.  The exception is <img> tags, which
+    are treated like words, and the href attribute of <a> tags, which
+    are noted inside the tag itself when there are changes.
+    """
+    old_html_tokens = tokenize(old_html)
+    new_html_tokens = tokenize(new_html)
+    result = htmldiff_tokens(old_html_tokens, new_html_tokens)
+    try:
+        result = ''.join(result).strip()
+    except (ValueError, TypeError) as exc:
+        print(exc)
+        result = ''
+    return fixup_ins_del_tags(result)
+
+
+def htmldiff_tokens(html1_tokens, html2_tokens):
+    """ Does a diff on the tokens themselves, returning a list of text
+    chunks (not tokens).
+    """
+    # There are several passes as we do the differences.  The tokens
+    # isolate the portion of the content we care to diff; difflib does
+    # all the actual hard work at that point.
+    #
+    # Then we must create a valid document from pieces of both the old
+    # document and the new document.  We generally prefer to take
+    # markup from the new document, and only do a best effort attempt
+    # to keep markup from the old document; anything that we can't
+    # resolve we throw away.  Also we try to put the deletes as close
+    # to the location where we think they would have been -- because
+    # we are only keeping the markup from the new document, it can be
+    # fuzzy where in the new document the old text would have gone.
+    # Again we just do a best effort attempt.
+    s = InsensitiveSequenceMatcher(a=html1_tokens, b=html2_tokens)
+    commands = s.get_opcodes()
+    result = []
+    for command, i1, i2, j1, j2 in commands:
+        if command == 'equal':
+            result.extend(expand_tokens(html2_tokens[j1:j2], equal=True))
+            continue
+        if command == 'insert' or command == 'replace':
+            ins_tokens = expand_tokens(html2_tokens[j1:j2])
+            merge_insert(ins_tokens, result)
+        if command == 'delete' or command == 'replace':
+            del_tokens = expand_tokens(html1_tokens[i1:i2])
+            merge_delete(del_tokens, result)
+
+    # If deletes were inserted directly as <del> then we'd have an
+    # invalid document at this point.  Instead we put in special
+    # markers, and when the complete diffed document has been created
+    # we try to move the deletes around and resolve any problems.
+    cleanup_delete(result)
+
+    return result
+
+
+def expand_tokens(tokens, equal=False):
+    """Given a list of tokens, return a generator of the chunks of
+    text for the data in the tokens.
+    """
+    for token in tokens:
+        yield from token.pre_tags
+        if not equal or not token.hide_when_equal:
+            yield token.html() + token.trailing_whitespace
+        yield from token.post_tags
+
+
+def merge_insert(ins_chunks, doc: list):
+    """ doc is the already-handled document (as a list of text chunks);
+    here we add <ins>ins_chunks</ins> to the end of that.  """
+    # Though we don't throw away unbalanced start/end tags
+    # (we assume there is accompanying markup later or earlier in the
+    # document), we only put <ins> around the balanced portion.
+
+    # Legacy note: We make a choice here. Originally, we merged all sequences of
+    # unbalanced tags together into separate start and end tag groups. Now, we look at
+    # each sequence separately, leading to more fine-grained diffs but different
+    # tag structure than before.
+
+    item: tuple
+    for balanced, marked_chunks in group_by_first_item(mark_unbalanced(ins_chunks)):
+        chunks = [item[1] for item in marked_chunks]
+        if balanced == 'b':
+            if doc and not doc[-1].endswith(' '):
+                # Fix up the case where the word before the insert didn't end with a space.
+                doc[-1] += ' '
+            doc.append('<ins>')
+            doc.extend(chunks)
+            if doc[-1].endswith(' '):
+                # We move space outside of </ins>.
+                doc[-1] = doc[-1][:-1]
+            doc.append('</ins> ')
+        else:
+            # unmatched start or end
+            doc.extend(chunks)
+
+
+@cython.cfunc
+def tag_name_of_chunk(chunk: str) -> str:
+    i: cython.Py_ssize_t
+    ch: cython.Py_UCS4
+
+    if chunk[0] != '<':
+        return ""
+
+    start_pos = 1
+    for i, ch in enumerate(chunk):
+        if ch == '/':
+            start_pos = 2
+        elif ch == '>':
+            return chunk[start_pos:i]
+        elif ch.isspace():
+            return chunk[start_pos:i]
+
+    return chunk[start_pos:]
+
+if not cython.compiled:
+    # Avoid performance regression in Python due to string iteration.
+    def tag_name_of_chunk(chunk: str) -> str:
+        return chunk.split(None, 1)[0].strip('<>/')
+
+
+# These are sentinels to represent the start and end of a <del>
+# segment, until we do the cleanup phase to turn them into proper
+# markup:
+class DEL_START:
+    pass
+class DEL_END:
+    pass
+
+
+def merge_delete(del_chunks, doc: list):
+    """ Adds the text chunks in del_chunks to the document doc (another
+    list of text chunks) with marker to show it is a delete.
+    cleanup_delete later resolves these markers into <del> tags."""
+
+    doc.append(DEL_START)
+    doc.extend(del_chunks)
+    doc.append(DEL_END)
+
+
+def cleanup_delete(chunks: list):
+    """ Cleans up any DEL_START/DEL_END markers in the document, replacing
+    them with <del></del>.  To do this while keeping the document
+    valid, it may need to drop some tags (either start or end tags).
+
+    It may also move the del into adjacent tags to try to move it to a
+    similar location where it was originally located (e.g., moving a
+    delete into preceding <div> tag, if the del looks like (DEL_START,
+    'Text</div>', DEL_END)
+    """
+    chunk_count = len(chunks)
+
+    i: cython.Py_ssize_t
+    del_start: cython.Py_ssize_t
+    del_end: cython.Py_ssize_t
+    shift_start_right: cython.Py_ssize_t
+    shift_end_left: cython.Py_ssize_t
+    unbalanced_start: cython.Py_ssize_t
+    unbalanced_end: cython.Py_ssize_t
+    pos: cython.Py_ssize_t
+    start_pos: cython.Py_ssize_t
+    chunk: str
+
+    start_pos = 0
+    while 1:
+        # Find a pending DEL_START/DEL_END, splitting the document
+        # into stuff-preceding-DEL_START, stuff-inside, and
+        # stuff-following-DEL_END
+        try:
+            del_start = chunks.index(DEL_START, start_pos)
+        except ValueError:
+            # Nothing found, we've cleaned up the entire doc
+            break
+        else:
+            del_end = chunks.index(DEL_END, del_start + 1)
+
+        shift_end_left = shift_start_right = 0
+        unbalanced_start = unbalanced_end = 0
+        deleted_chunks = mark_unbalanced(chunks[del_start+1:del_end])
+
+        # For unbalanced start tags at the beginning, find matching (non-deleted)
+        # end tags after the current DEL_END and move the start tag outside.
+        for balanced, del_chunk in deleted_chunks:
+            if balanced != 'us':
+                break
+            unbalanced_start += 1
+            unbalanced_start_name = tag_name_of_chunk(del_chunk)
+            for i in range(del_end+1, chunk_count):
+                if chunks[i] is DEL_START:
+                    break
+                chunk = chunks[i]
+                if chunk[0] != '<' or chunk[1] == '/':
+                    # Reached a word or closing tag.
+                    break
+                name = tag_name_of_chunk(chunk)
+                if name == 'ins':
+                    # Cannot move into an insert.
+                    break
+                assert name != 'del', f"Unexpected delete tag: {chunk!r}"
+                if name != unbalanced_start_name:
+                    # Avoid mixing in other start tags.
+                    break
+                # Exclude start tag to balance the end tag.
+                shift_start_right += 1
+
+        # For unbalanced end tags at the end, find matching (non-deleted)
+        # start tags before the currend DEL_START and move the end tag outside.
+        for balanced, del_chunk in reversed(deleted_chunks):
+            if balanced != 'ue':
+                break
+            unbalanced_end += 1
+            unbalanced_end_name = tag_name_of_chunk(del_chunk)
+            for i in range(del_start - 1, -1, -1):
+                if chunks[i] is DEL_END:
+                    break
+                chunk = chunks[i]
+                if chunk[0] == '<' and chunk[1] != '/':
+                    # Reached an opening tag, can we go further?  Maybe not...
+                    break
+                name = tag_name_of_chunk(chunk)
+                if name == 'ins' or name == 'del':
+                    # Cannot move into an insert or delete.
+                    break
+                if name != unbalanced_end_name:
+                    # Avoid mixing in other start tags.
+                    break
+                # Exclude end tag to balance the start tag.
+                shift_end_left += 1
+
+        """
+        # This is what we do below in loops, spelled out using slicing and list copying:
+
+        chunks[del_start - shift_end_left : del_end + shift_start_right + 1] = [
+            *chunks[del_start + 1: del_start + shift_start_right + 1],
+            '<del>',
+            *chunks[del_start + unbalanced_start + 1 : del_end - unbalanced_end],
+            '</del> ',
+            *chunks[del_end - shift_end_left: del_end],
+        ]
+
+        new_del_end = del_end - 2 * shift_end_left
+        assert chunks[new_del_end] == '</del> '
+        del_end = new_del_end
+
+        if new_del_start > 0 and not chunks[new_del_start - 1].endswith(' '):
+            # Fix up case where the word before us didn't have a trailing space.
+            chunks[new_del_start - 1] += ' '
+        if new_del_end > 0 and chunks[new_del_end - 1].endswith(' '):
+            # Move space outside of </del>.
+            chunks[new_del_end - 1] = chunks[new_del_end - 1][:-1]
+        """
+        pos = del_start - shift_end_left
+        # Move re-balanced start tags before the '<del>'.
+        for i in range(del_start + 1, del_start + shift_start_right + 1):
+            chunks[pos] = chunks[i]
+            pos += 1
+        if pos and not chunks[pos - 1].endswith(' '):
+            # Fix up the case where the word before '<del>' didn't have a trailing space.
+            chunks[pos - 1] += ' '
+        chunks[pos] = '<del>'
+        pos += 1
+        # Copy only the balanced deleted content between '<del>' and '</del>'.
+        for i in range(del_start + unbalanced_start + 1, del_end - unbalanced_end):
+            chunks[pos] = chunks[i]
+            pos += 1
+        if chunks[pos - 1].endswith(' '):
+            # Move trailing space outside of </del>.
+            chunks[pos - 1] = chunks[pos - 1][:-1]
+        chunks[pos] = '</del> '
+        pos += 1
+        # Move re-balanced end tags after the '</del>'.
+        for i in range(del_end - shift_end_left, del_end):
+            chunks[pos] = chunks[i]
+            pos += 1
+        # Adjust the length of the processed part in 'chunks'.
+        del chunks[pos : del_end + shift_start_right + 1]
+        start_pos = pos
+
+
+@cython.cfunc
+def mark_unbalanced(chunks) -> list:
+    tag_stack = []
+    marked = []
+
+    chunk: str
+    parents: list
+
+    for chunk in chunks:
+        if not chunk.startswith('<'):
+            marked.append(('b', chunk))
+            continue
+
+        name = tag_name_of_chunk(chunk)
+        if name in empty_tags:
+            marked.append(('b', chunk))
+            continue
+
+        if chunk[1] == '/':
+            # closing tag found, unwind tag stack
+            while tag_stack:
+                start_name, start_chunk, parents = tag_stack.pop()
+                if start_name == name:
+                    # balanced tag closing, keep rest of stack intact
+                    parents.append(('b', start_chunk))
+                    parents.extend(marked)
+                    parents.append(('b', chunk))
+                    marked = parents
+                    chunk = None
+                    break
+                else:
+                    # unmatched start tag
+                    parents.append(('us', start_chunk))
+                    parents.extend(marked)
+                    marked = parents
+
+            if chunk is not None:
+                # unmatched end tag left after clearing the stack
+                marked.append(('ue', chunk))
+        else:
+            # new start tag found
+            tag_stack.append((name, chunk, marked))
+            marked = []
+
+    # add any unbalanced start tags
+    while tag_stack:
+        _, start_chunk, parents = tag_stack.pop()
+        parents.append(('us', start_chunk))
+        parents.extend(marked)
+        marked = parents
+
+    return marked
+
+
+class token(str):
+    """ Represents a diffable token, generally a word that is displayed to
+    the user.  Opening tags are attached to this token when they are
+    adjacent (pre_tags) and closing tags that follow the word
+    (post_tags).  Some exceptions occur when there are empty tags
+    adjacent to a word, so there may be close tags in pre_tags, or
+    open tags in post_tags.
+
+    We also keep track of whether the word was originally followed by
+    whitespace, even though we do not want to treat the word as
+    equivalent to a similar word that does not have a trailing
+    space."""
+
+    # When this is true, the token will be eliminated from the
+    # displayed diff if no change has occurred:
+    hide_when_equal = False
+
+    def __new__(cls, text, pre_tags=None, post_tags=None, trailing_whitespace=""):
+        obj = str.__new__(cls, text)
+
+        obj.pre_tags = pre_tags if pre_tags is not None else []
+        obj.post_tags = post_tags if post_tags is not None else []
+        obj.trailing_whitespace = trailing_whitespace
+
+        return obj
+
+    def __repr__(self):
+        return 'token(%s, %r, %r, %r)' % (
+            str.__repr__(self), self.pre_tags, self.post_tags, self.trailing_whitespace)
+
+    def html(self):
+        return str(self)
+
+class tag_token(token):
+
+    """ Represents a token that is actually a tag.  Currently this is just
+    the <img> tag, which takes up visible space just like a word but
+    is only represented in a document by a tag.  """
+
+    def __new__(cls, tag, data, html_repr, pre_tags=None,
+                post_tags=None, trailing_whitespace=""):
+        obj = token.__new__(cls, f"{type}: {data}",
+                            pre_tags=pre_tags,
+                            post_tags=post_tags,
+                            trailing_whitespace=trailing_whitespace)
+        obj.tag = tag
+        obj.data = data
+        obj.html_repr = html_repr
+        return obj
+
+    def __repr__(self):
+        return 'tag_token(%s, %s, html_repr=%s, post_tags=%r, pre_tags=%r, trailing_whitespace=%r)' % (
+            self.tag,
+            self.data,
+            self.html_repr,
+            self.pre_tags,
+            self.post_tags,
+            self.trailing_whitespace)
+    def html(self):
+        return self.html_repr
+
+class href_token(token):
+
+    """ Represents the href in an anchor tag.  Unlike other words, we only
+    show the href when it changes.  """
+
+    hide_when_equal = True
+
+    def html(self):
+        return ' Link: %s' % self
+
+
+def tokenize(html, include_hrefs=True):
+    """
+    Parse the given HTML and returns token objects (words with attached tags).
+
+    This parses only the content of a page; anything in the head is
+    ignored, and the <head> and <body> elements are themselves
+    optional.  The content is then parsed by lxml, which ensures the
+    validity of the resulting parsed document (though lxml may make
+    incorrect guesses when the markup is particular bad).
+
+    <ins> and <del> tags are also eliminated from the document, as
+    that gets confusing.
+
+    If include_hrefs is true, then the href attribute of <a> tags is
+    included as a special kind of diffable token."""
+    if etree.iselement(html):
+        body_el = html
+    else:
+        body_el = parse_html(html, cleanup=True)
+    # Then we split the document into text chunks for each tag, word, and end tag:
+    chunks = flatten_el(body_el, skip_tag=True, include_hrefs=include_hrefs)
+    # Finally re-joining them into token objects:
+    return fixup_chunks(chunks)
+
+
+def parse_html(html, cleanup=True):
+    """
+    Parses an HTML fragment, returning an lxml element.  Note that the HTML will be
+    wrapped in a <div> tag that was not in the original document.
+
+    If cleanup is true, make sure there's no <head> or <body>, and get
+    rid of any <ins> and <del> tags.
+    """
+    if cleanup:
+        # This removes any extra markup or structure like <head>:
+        html = cleanup_html(html)
+    return fragment_fromstring(html, create_parent=True)
+
+
+_search_body = re.compile(r'<body.*?>', re.I|re.S).search
+_search_end_body = re.compile(r'</body.*?>', re.I|re.S).search
+_replace_ins_del = re.compile(r'</?(ins|del).*?>', re.I|re.S).sub
+
+def cleanup_html(html):
+    """ This 'cleans' the HTML, meaning that any page structure is removed
+    (only the contents of <body> are used, if there is any <body).
+    Also <ins> and <del> tags are removed.  """
+    match = _search_body(html)
+    if match:
+        html = html[match.end():]
+    match = _search_end_body(html)
+    if match:
+        html = html[:match.start()]
+    html = _replace_ins_del('', html)
+    return html
+
+
+def split_trailing_whitespace(word):
+    """
+    This function takes a word, such as 'test\n\n' and returns ('test','\n\n')
+    """
+    stripped_length = len(word.rstrip())
+    return word[0:stripped_length], word[stripped_length:]
+
+
+def fixup_chunks(chunks):
+    """
+    This function takes a list of chunks and produces a list of tokens.
+    """
+    tag_accum = []
+    cur_word = None
+    result = []
+    for chunk in chunks:
+        if isinstance(chunk, tuple):
+            if chunk[0] == 'img':
+                src = chunk[1]
+                tag, trailing_whitespace = split_trailing_whitespace(chunk[2])
+                cur_word = tag_token('img', src, html_repr=tag,
+                                     pre_tags=tag_accum,
+                                     trailing_whitespace=trailing_whitespace)
+                tag_accum = []
+                result.append(cur_word)
+
+            elif chunk[0] == 'href':
+                href = chunk[1]
+                cur_word = href_token(href, pre_tags=tag_accum, trailing_whitespace=" ")
+                tag_accum = []
+                result.append(cur_word)
+            continue
+
+        if is_word(chunk):
+            chunk, trailing_whitespace = split_trailing_whitespace(chunk)
+            cur_word = token(chunk, pre_tags=tag_accum, trailing_whitespace=trailing_whitespace)
+            tag_accum = []
+            result.append(cur_word)
+
+        elif is_start_tag(chunk):
+            tag_accum.append(chunk)
+
+        elif is_end_tag(chunk):
+            if tag_accum:
+                tag_accum.append(chunk)
+            else:
+                assert cur_word, (
+                    "Weird state, cur_word=%r, result=%r, chunks=%r of %r"
+                    % (cur_word, result, chunk, chunks))
+                cur_word.post_tags.append(chunk)
+        else:
+            assert False
+
+    if not result:
+        return [token('', pre_tags=tag_accum)]
+    else:
+        result[-1].post_tags.extend(tag_accum)
+
+    return result
+
+
+# All the tags in HTML that don't require end tags:
+empty_tags = cython.declare(frozenset, defs.empty_tags)
+
+block_level_tags = cython.declare(frozenset, frozenset([
+    'address',
+    'blockquote',
+    'center',
+    'dir',
+    'div',
+    'dl',
+    'fieldset',
+    'form',
+    'h1',
+    'h2',
+    'h3',
+    'h4',
+    'h5',
+    'h6',
+    'hr',
+    'isindex',
+    'menu',
+    'noframes',
+    'noscript',
+    'ol',
+    'p',
+    'pre',
+    'table',
+    'ul',
+]))
+
+block_level_container_tags = cython.declare(frozenset, frozenset([
+    'dd',
+    'dt',
+    'frameset',
+    'li',
+    'tbody',
+    'td',
+    'tfoot',
+    'th',
+    'thead',
+    'tr',
+]))
+
+any_block_level_tag = cython.declare(tuple, tuple(sorted(
+    block_level_tags | block_level_container_tags))
+)
+
+
+def flatten_el(el, include_hrefs, skip_tag=False):
+    """ Takes an lxml element el, and generates all the text chunks for
+    that tag.  Each start tag is a chunk, each word is a chunk, and each
+    end tag is a chunk.
+
+    If skip_tag is true, then the outermost container tag is
+    not returned (just its contents)."""
+    if not skip_tag:
+        if el.tag == 'img':
+            yield ('img', el.get('src'), start_tag(el))
+        else:
+            yield start_tag(el)
+    if el.tag in empty_tags and not el.text and not len(el) and not el.tail:
+        return
+    start_words = split_words(el.text)
+    for word in start_words:
+        yield html_escape(word)
+    for child in el:
+        yield from flatten_el(child, include_hrefs=include_hrefs)
+    if el.tag == 'a' and el.get('href') and include_hrefs:
+        yield ('href', el.get('href'))
+    if not skip_tag:
+        yield end_tag(el)
+        end_words = split_words(el.tail)
+        for word in end_words:
+            yield html_escape(word)
+
+_find_words = re.compile(r'\S+(?:\s+|$)', re.U).findall
+
+def split_words(text):
+    """ Splits some text into words. Includes trailing whitespace
+    on each word when appropriate.  """
+    if not text or not text.strip():
+        return []
+
+    words = _find_words(text)
+    return words
+
+_has_start_whitespace = re.compile(r'^[ \t\n\r]').match
+
+def start_tag(el):
+    """
+    The text representation of the start tag for a tag.
+    """
+    attributes = ''.join([
+        f' {name}="{html_escape(value)}"'
+        for name, value in el.attrib.items()
+    ])
+    return f'<{el.tag}{attributes}>'
+
+def end_tag(el):
+    """ The text representation of an end tag for a tag.  Includes
+    trailing whitespace when appropriate.  """
+    tail = el.tail
+    extra = ' ' if tail and _has_start_whitespace(tail) else ''
+    return f'</{el.tag}>{extra}'
+
+def is_word(tok):
+    return not tok.startswith('<')
+
+def is_end_tag(tok):
+    return tok.startswith('</')
+
+def is_start_tag(tok):
+    return tok.startswith('<') and not tok.startswith('</')
+
+def fixup_ins_del_tags(html):
+    """ Given an html string, move any <ins> or <del> tags inside of any
+    block-level elements, e.g. transform <ins><p>word</p></ins> to
+    <p><ins>word</ins></p> """
+    doc = parse_html(html, cleanup=False)
+    _fixup_ins_del_tags(doc)
+    html = serialize_html_fragment(doc, skip_outer=True)
+    return html
+
+def serialize_html_fragment(el, skip_outer=False):
+    """ Serialize a single lxml element as HTML.  The serialized form
+    includes the elements tail.
+
+    If skip_outer is true, then don't serialize the outermost tag
+    """
+    assert not isinstance(el, str), (
+        f"You should pass in an element, not a string like {el!r}")
+    html = etree.tostring(el, method="html", encoding='unicode')
+    if skip_outer:
+        # Get rid of the extra starting tag:
+        html = html[html.find('>')+1:]
+        # Get rid of the extra end tag:
+        html = html[:html.rfind('<')]
+        return html.strip()
+    else:
+        return html
+
+
+@cython.cfunc
+def _fixup_ins_del_tags(doc):
+    """fixup_ins_del_tags that works on an lxml document in-place
+    """
+    for el in list(doc.iter('ins', 'del')):
+        if not _contains_block_level_tag(el):
+            continue
+        _move_el_inside_block(el, tag=el.tag)
+        el.drop_tag()
+        #_merge_element_contents(el)
+
+
+@cython.cfunc
+def _contains_block_level_tag(el):
+    """True if the element contains any block-level elements, like <p>, <td>, etc.
+    """
+    for el in el.iter(*any_block_level_tag):
+        return True
+    return False
+
+
+@cython.cfunc
+def _move_el_inside_block(el, tag):
+    """ helper for _fixup_ins_del_tags; actually takes the <ins> etc tags
+    and moves them inside any block-level tags.  """
+    makeelement = el.makeelement
+    for block_level_el in el.iter(*any_block_level_tag):
+        if block_level_el is not el:
+            break
+    else:
+        # No block-level tags in any child
+        children_tag = makeelement(tag)
+        children_tag.text = el.text
+        el.text = None
+        children_tag.extend(iter(el))
+        el[:] = [children_tag]
+        return
+
+    for child in list(el):
+        if _contains_block_level_tag(child):
+            _move_el_inside_block(child, tag)
+            if child.tail:
+                tail_tag = makeelement(tag)
+                tail_tag.text = child.tail
+                child.tail = None
+                child.addnext(tail_tag)
+        else:
+            child_tag = makeelement(tag)
+            el.replace(child, child_tag)
+            child_tag.append(child)
+    if el.text:
+        text_tag = makeelement(tag)
+        text_tag.text = el.text
+        el.text = None
+        el.insert(0, text_tag)
+
+
+def _merge_element_contents(el):
+    """
+    Removes an element, but merges its contents into its place, e.g.,
+    given <p>Hi <i>there!</i></p>, if you remove the <i> element you get
+    <p>Hi there!</p>
+    """
+    parent = el.getparent()
+    text = el.text
+    tail = el.tail
+    if tail:
+        if not len(el):
+            text = (text or '') + tail
+        else:
+            el[-1].tail = (el[-1].tail or '') + tail
+    index = parent.index(el)
+    if text:
+        previous = el.getprevious()
+        if previous is None:
+            parent.text = (parent.text or '') + text
+        else:
+            previous.tail = (previous.tail or '') + text
+    parent[index:index+1] = el.getchildren()
+
+
+@cython.final
+@cython.cclass
+class InsensitiveSequenceMatcher(SequenceMatcher):
+    """
+    Acts like SequenceMatcher, but tries not to find very small equal
+    blocks amidst large spans of changes
+    """
+
+    threshold = 2
+
+    @cython.cfunc
+    def get_matching_blocks(self) -> list:
+        size: cython.Py_ssize_t = min(len(self.b), len(self.b))
+        threshold: cython.Py_ssize_t = self.threshold
+        threshold = min(threshold, size // 4)
+        actual = SequenceMatcher.get_matching_blocks(self)
+        return [item for item in actual
+                if item[2] > threshold
+                or not item[2]]
+
+
+if __name__ == '__main__':
+    from lxml.html import _diffcommand
+    _diffcommand.main()

.venv/lib/python3.9/site-packages/lxml/html/formfill.py

@@ -0,0 +1,299 @@
+from lxml.etree import XPath, ElementBase
+from lxml.html import fromstring, XHTML_NAMESPACE
+from lxml.html import _forms_xpath, _options_xpath, _nons, _transform_result
+from lxml.html import defs
+import copy
+
+try:
+    basestring
+except NameError:
+    # Python 3
+    basestring = str
+
+__all__ = ['FormNotFound', 'fill_form', 'fill_form_html',
+           'insert_errors', 'insert_errors_html',
+           'DefaultErrorCreator']
+
+class FormNotFound(LookupError):
+    """
+    Raised when no form can be found
+    """
+
+_form_name_xpath = XPath('descendant-or-self::form[name=$name]|descendant-or-self::x:form[name=$name]', namespaces={'x':XHTML_NAMESPACE})
+_input_xpath = XPath('|'.join(['descendant-or-self::'+_tag for _tag in ('input','select','textarea','x:input','x:select','x:textarea')]),
+                               namespaces={'x':XHTML_NAMESPACE})
+_label_for_xpath = XPath('//label[@for=$for_id]|//x:label[@for=$for_id]',
+                               namespaces={'x':XHTML_NAMESPACE})
+_name_xpath = XPath('descendant-or-self::*[@name=$name]')
+
+def fill_form(
+    el,
+    values,
+    form_id=None,
+    form_index=None,
+    ):
+    el = _find_form(el, form_id=form_id, form_index=form_index)
+    _fill_form(el, values)
+
+def fill_form_html(html, values, form_id=None, form_index=None):
+    result_type = type(html)
+    if isinstance(html, basestring):
+        doc = fromstring(html)
+    else:
+        doc = copy.deepcopy(html)
+    fill_form(doc, values, form_id=form_id, form_index=form_index)
+    return _transform_result(result_type, doc)
+
+def _fill_form(el, values):
+    counts = {}
+    if hasattr(values, 'mixed'):
+        # For Paste request parameters
+        values = values.mixed()
+    inputs = _input_xpath(el)
+    for input in inputs:
+        name = input.get('name')
+        if not name:
+            continue
+        if _takes_multiple(input):
+            value = values.get(name, [])
+            if not isinstance(value, (list, tuple)):
+                value = [value]
+            _fill_multiple(input, value)
+        elif name not in values:
+            continue
+        else:
+            index = counts.get(name, 0)
+            counts[name] = index + 1
+            value = values[name]
+            if isinstance(value, (list, tuple)):
+                try:
+                    value = value[index]
+                except IndexError:
+                    continue
+            elif index > 0:
+                continue
+            _fill_single(input, value)
+
+def _takes_multiple(input):
+    if _nons(input.tag) == 'select' and input.get('multiple'):
+        # FIXME: multiple="0"?
+        return True
+    type = input.get('type', '').lower()
+    if type in ('radio', 'checkbox'):
+        return True
+    return False
+
+def _fill_multiple(input, value):
+    type = input.get('type', '').lower()
+    if type == 'checkbox':
+        v = input.get('value')
+        if v is None:
+            if not value:
+                result = False
+            else:
+                result = value[0]
+                if isinstance(value, basestring):
+                    # The only valid "on" value for an unnamed checkbox is 'on'
+                    result = result == 'on'
+            _check(input, result)
+        else:
+            _check(input, v in value)
+    elif type == 'radio':
+        v = input.get('value')
+        _check(input, v in value)
+    else:
+        assert _nons(input.tag) == 'select'
+        for option in _options_xpath(input):
+            v = option.get('value')
+            if v is None:
+                # This seems to be the default, at least on IE
+                # FIXME: but I'm not sure
+                v = option.text_content()
+            _select(option, v in value)
+
+def _check(el, check):
+    if check:
+        el.set('checked', '')
+    else:
+        if 'checked' in el.attrib:
+            del el.attrib['checked']
+
+def _select(el, select):
+    if select:
+        el.set('selected', '')
+    else:
+        if 'selected' in el.attrib:
+            del el.attrib['selected']
+
+def _fill_single(input, value):
+    if _nons(input.tag) == 'textarea':
+        input.text = value
+    else:
+        input.set('value', value)
+
+def _find_form(el, form_id=None, form_index=None):
+    if form_id is None and form_index is None:
+        forms = _forms_xpath(el)
+        for form in forms:
+            return form
+        raise FormNotFound(
+            "No forms in page")
+    if form_id is not None:
+        form = el.get_element_by_id(form_id)
+        if form is not None:
+            return form
+        forms = _form_name_xpath(el, name=form_id)
+        if forms:
+            return forms[0]
+        else:
+            raise FormNotFound(
+                "No form with the name or id of %r (forms: %s)"
+                % (id, ', '.join(_find_form_ids(el))))               
+    if form_index is not None:
+        forms = _forms_xpath(el)
+        try:
+            return forms[form_index]
+        except IndexError:
+            raise FormNotFound(
+                "There is no form with the index %r (%i forms found)"
+                % (form_index, len(forms)))
+
+def _find_form_ids(el):
+    forms = _forms_xpath(el)
+    if not forms:
+        yield '(no forms)'
+        return
+    for index, form in enumerate(forms):
+        if form.get('id'):
+            if form.get('name'):
+                yield '%s or %s' % (form.get('id'),
+                                     form.get('name'))
+            else:
+                yield form.get('id')
+        elif form.get('name'):
+            yield form.get('name')
+        else:
+            yield '(unnamed form %s)' % index
+
+############################################################
+## Error filling
+############################################################
+
+class DefaultErrorCreator:
+    insert_before = True
+    block_inside = True
+    error_container_tag = 'div'
+    error_message_class = 'error-message'
+    error_block_class = 'error-block'
+    default_message = "Invalid"
+
+    def __init__(self, **kw):
+        for name, value in kw.items():
+            if not hasattr(self, name):
+                raise TypeError(
+                    "Unexpected keyword argument: %s" % name)
+            setattr(self, name, value)
+
+    def __call__(self, el, is_block, message):
+        error_el = el.makeelement(self.error_container_tag)
+        if self.error_message_class:
+            error_el.set('class', self.error_message_class)
+        if is_block and self.error_block_class:
+            error_el.set('class', error_el.get('class', '')+' '+self.error_block_class)
+        if message is None or message == '':
+            message = self.default_message
+        if isinstance(message, ElementBase):
+            error_el.append(message)
+        else:
+            assert isinstance(message, basestring), (
+                "Bad message; should be a string or element: %r" % message)
+            error_el.text = message or self.default_message
+        if is_block and self.block_inside:
+            if self.insert_before:
+                error_el.tail = el.text
+                el.text = None
+                el.insert(0, error_el)
+            else:
+                el.append(error_el)
+        else:
+            parent = el.getparent()
+            pos = parent.index(el)
+            if self.insert_before:
+                parent.insert(pos, error_el)
+            else:
+                error_el.tail = el.tail
+                el.tail = None
+                parent.insert(pos+1, error_el)
+
+default_error_creator = DefaultErrorCreator()
+    
+
+def insert_errors(
+    el,
+    errors,
+    form_id=None,
+    form_index=None,
+    error_class="error",
+    error_creator=default_error_creator,
+    ):
+    el = _find_form(el, form_id=form_id, form_index=form_index)
+    for name, error in errors.items():
+        if error is None:
+            continue
+        for error_el, message in _find_elements_for_name(el, name, error):
+            assert isinstance(message, (basestring, type(None), ElementBase)), (
+                "Bad message: %r" % message)
+            _insert_error(error_el, message, error_class, error_creator)
+
+def insert_errors_html(html, values, **kw):
+    result_type = type(html)
+    if isinstance(html, basestring):
+        doc = fromstring(html)
+    else:
+        doc = copy.deepcopy(html)
+    insert_errors(doc, values, **kw)
+    return _transform_result(result_type, doc)
+
+def _insert_error(el, error, error_class, error_creator):
+    if _nons(el.tag) in defs.empty_tags or _nons(el.tag) == 'textarea':
+        is_block = False
+    else:
+        is_block = True
+    if _nons(el.tag) != 'form' and error_class:
+        _add_class(el, error_class)
+    if el.get('id'):
+        labels = _label_for_xpath(el, for_id=el.get('id'))
+        if labels:
+            for label in labels:
+                _add_class(label, error_class)
+    error_creator(el, is_block, error)
+
+def _add_class(el, class_name):
+    if el.get('class'):
+        el.set('class', el.get('class')+' '+class_name)
+    else:
+        el.set('class', class_name)
+
+def _find_elements_for_name(form, name, error):
+    if name is None:
+        # An error for the entire form
+        yield form, error
+        return
+    if name.startswith('#'):
+        # By id
+        el = form.get_element_by_id(name[1:])
+        if el is not None:
+            yield el, error
+        return
+    els = _name_xpath(form, name=name)
+    if not els:
+        # FIXME: should this raise an exception?
+        return
+    if not isinstance(error, (list, tuple)):
+        yield els[0], error
+        return
+    # FIXME: if error is longer than els, should it raise an error?
+    for el, err in zip(els, error):
+        if err is None:
+            continue
+        yield el, err

.venv/lib/python3.9/site-packages/lxml/html/html5parser.py

@@ -0,0 +1,260 @@
+"""
+An interface to html5lib that mimics the lxml.html interface.
+"""
+import sys
+import string
+
+from html5lib import HTMLParser as _HTMLParser
+from html5lib.treebuilders.etree_lxml import TreeBuilder
+from lxml import etree
+from lxml.html import Element, XHTML_NAMESPACE, _contains_block_level_tag
+
+# python3 compatibility
+try:
+    _strings = basestring
+except NameError:
+    _strings = (bytes, str)
+try:
+    from urllib2 import urlopen
+except ImportError:
+    from urllib.request import urlopen
+try:
+    from urlparse import urlparse
+except ImportError:
+    from urllib.parse import urlparse
+
+
+class HTMLParser(_HTMLParser):
+    """An html5lib HTML parser with lxml as tree."""
+
+    def __init__(self, strict=False, **kwargs):
+        _HTMLParser.__init__(self, strict=strict, tree=TreeBuilder, **kwargs)
+
+
+try:
+    from html5lib import XHTMLParser as _XHTMLParser
+except ImportError:
+    pass
+else:
+    class XHTMLParser(_XHTMLParser):
+        """An html5lib XHTML Parser with lxml as tree."""
+
+        def __init__(self, strict=False, **kwargs):
+            _XHTMLParser.__init__(self, strict=strict, tree=TreeBuilder, **kwargs)
+
+    xhtml_parser = XHTMLParser()
+
+
+def _find_tag(tree, tag):
+    elem = tree.find(tag)
+    if elem is not None:
+        return elem
+    return tree.find('{%s}%s' % (XHTML_NAMESPACE, tag))
+
+
+def document_fromstring(html, guess_charset=None, parser=None):
+    """
+    Parse a whole document into a string.
+
+    If `guess_charset` is true, or if the input is not Unicode but a
+    byte string, the `chardet` library will perform charset guessing
+    on the string.
+    """
+    if not isinstance(html, _strings):
+        raise TypeError('string required')
+
+    if parser is None:
+        parser = html_parser
+
+    options = {}
+    if guess_charset is None and isinstance(html, bytes):
+        # html5lib does not accept useChardet as an argument, if it
+        # detected the html argument would produce unicode objects.
+        guess_charset = True
+    if guess_charset is not None:
+        options['useChardet'] = guess_charset
+    return parser.parse(html, **options).getroot()
+
+
+def fragments_fromstring(html, no_leading_text=False,
+                         guess_charset=None, parser=None):
+    """Parses several HTML elements, returning a list of elements.
+
+    The first item in the list may be a string.  If no_leading_text is true,
+    then it will be an error if there is leading text, and it will always be
+    a list of only elements.
+
+    If `guess_charset` is true, the `chardet` library will perform charset
+    guessing on the string.
+    """
+    if not isinstance(html, _strings):
+        raise TypeError('string required')
+
+    if parser is None:
+        parser = html_parser
+
+    options = {}
+    if guess_charset is None and isinstance(html, bytes):
+        # html5lib does not accept useChardet as an argument, if it
+        # detected the html argument would produce unicode objects.
+        guess_charset = False
+    if guess_charset is not None:
+        options['useChardet'] = guess_charset
+    children = parser.parseFragment(html, 'div', **options)
+    if children and isinstance(children[0], _strings):
+        if no_leading_text:
+            if children[0].strip():
+                raise etree.ParserError('There is leading text: %r' %
+                                        children[0])
+            del children[0]
+    return children
+
+
+def fragment_fromstring(html, create_parent=False,
+                        guess_charset=None, parser=None):
+    """Parses a single HTML element; it is an error if there is more than
+    one element, or if anything but whitespace precedes or follows the
+    element.
+
+    If 'create_parent' is true (or is a tag name) then a parent node
+    will be created to encapsulate the HTML in a single element.  In
+    this case, leading or trailing text is allowed.
+
+    If `guess_charset` is true, the `chardet` library will perform charset
+    guessing on the string.
+    """
+    if not isinstance(html, _strings):
+        raise TypeError('string required')
+
+    accept_leading_text = bool(create_parent)
+
+    elements = fragments_fromstring(
+        html, guess_charset=guess_charset, parser=parser,
+        no_leading_text=not accept_leading_text)
+
+    if create_parent:
+        if not isinstance(create_parent, _strings):
+            create_parent = 'div'
+        new_root = Element(create_parent)
+        if elements:
+            if isinstance(elements[0], _strings):
+                new_root.text = elements[0]
+                del elements[0]
+            new_root.extend(elements)
+        return new_root
+
+    if not elements:
+        raise etree.ParserError('No elements found')
+    if len(elements) > 1:
+        raise etree.ParserError('Multiple elements found')
+    result = elements[0]
+    if result.tail and result.tail.strip():
+        raise etree.ParserError('Element followed by text: %r' % result.tail)
+    result.tail = None
+    return result
+
+
+def fromstring(html, guess_charset=None, parser=None):
+    """Parse the html, returning a single element/document.
+
+    This tries to minimally parse the chunk of text, without knowing if it
+    is a fragment or a document.
+
+    'base_url' will set the document's base_url attribute (and the tree's
+    docinfo.URL)
+
+    If `guess_charset` is true, or if the input is not Unicode but a
+    byte string, the `chardet` library will perform charset guessing
+    on the string.
+    """
+    if not isinstance(html, _strings):
+        raise TypeError('string required')
+    doc = document_fromstring(html, parser=parser,
+                              guess_charset=guess_charset)
+
+    # document starts with doctype or <html>, full document!
+    start = html[:50]
+    if isinstance(start, bytes):
+        # Allow text comparison in python3.
+        # Decode as ascii, that also covers latin-1 and utf-8 for the
+        # characters we need.
+        start = start.decode('ascii', 'replace')
+
+    start = start.lstrip().lower()
+    if start.startswith('<html') or start.startswith('<!doctype'):
+        return doc
+
+    head = _find_tag(doc, 'head')
+
+    # if the head is not empty we have a full document
+    if len(head):
+        return doc
+
+    body = _find_tag(doc, 'body')
+
+    # The body has just one element, so it was probably a single
+    # element passed in
+    if (len(body) == 1 and (not body.text or not body.text.strip())
+        and (not body[-1].tail or not body[-1].tail.strip())):
+        return body[0]
+
+    # Now we have a body which represents a bunch of tags which have the
+    # content that was passed in.  We will create a fake container, which
+    # is the body tag, except <body> implies too much structure.
+    if _contains_block_level_tag(body):
+        body.tag = 'div'
+    else:
+        body.tag = 'span'
+    return body
+
+
+def parse(filename_url_or_file, guess_charset=None, parser=None):
+    """Parse a filename, URL, or file-like object into an HTML document
+    tree.  Note: this returns a tree, not an element.  Use
+    ``parse(...).getroot()`` to get the document root.
+
+    If ``guess_charset`` is true, the ``useChardet`` option is passed into
+    html5lib to enable character detection.  This option is on by default
+    when parsing from URLs, off by default when parsing from file(-like)
+    objects (which tend to return Unicode more often than not), and on by
+    default when parsing from a file path (which is read in binary mode).
+    """
+    if parser is None:
+        parser = html_parser
+    if not isinstance(filename_url_or_file, _strings):
+        fp = filename_url_or_file
+        if guess_charset is None:
+            # assume that file-like objects return Unicode more often than bytes
+            guess_charset = False
+    elif _looks_like_url(filename_url_or_file):
+        fp = urlopen(filename_url_or_file)
+        if guess_charset is None:
+            # assume that URLs return bytes
+            guess_charset = True
+    else:
+        fp = open(filename_url_or_file, 'rb')
+        if guess_charset is None:
+            guess_charset = True
+
+    options = {}
+    # html5lib does not accept useChardet as an argument, if it
+    # detected the html argument would produce unicode objects.
+    if guess_charset:
+        options['useChardet'] = guess_charset
+    return parser.parse(fp, **options)
+
+
+def _looks_like_url(str):
+    scheme = urlparse(str)[0]
+    if not scheme:
+        return False
+    elif (sys.platform == 'win32' and
+            scheme in string.ascii_letters
+            and len(scheme) == 1):
+        # looks like a 'normal' absolute path
+        return False
+    else:
+        return True
+
+
+html_parser = HTMLParser()

.venv/lib/python3.9/site-packages/lxml/html/soupparser.py

@@ -0,0 +1,314 @@
+"""External interface to the BeautifulSoup HTML parser.
+"""
+
+__all__ = ["fromstring", "parse", "convert_tree"]
+
+import re
+from lxml import etree, html
+
+try:
+    from bs4 import (
+        BeautifulSoup, Tag, Comment, ProcessingInstruction, NavigableString,
+        Declaration, Doctype)
+    _DECLARATION_OR_DOCTYPE = (Declaration, Doctype)
+except ImportError:
+    from BeautifulSoup import (
+        BeautifulSoup, Tag, Comment, ProcessingInstruction, NavigableString,
+        Declaration)
+    _DECLARATION_OR_DOCTYPE = Declaration
+
+
+def fromstring(data, beautifulsoup=None, makeelement=None, **bsargs):
+    """Parse a string of HTML data into an Element tree using the
+    BeautifulSoup parser.
+
+    Returns the root ``<html>`` Element of the tree.
+
+    You can pass a different BeautifulSoup parser through the
+    `beautifulsoup` keyword, and a diffent Element factory function
+    through the `makeelement` keyword.  By default, the standard
+    ``BeautifulSoup`` class and the default factory of `lxml.html` are
+    used.
+    """
+    return _parse(data, beautifulsoup, makeelement, **bsargs)
+
+
+def parse(file, beautifulsoup=None, makeelement=None, **bsargs):
+    """Parse a file into an ElemenTree using the BeautifulSoup parser.
+
+    You can pass a different BeautifulSoup parser through the
+    `beautifulsoup` keyword, and a diffent Element factory function
+    through the `makeelement` keyword.  By default, the standard
+    ``BeautifulSoup`` class and the default factory of `lxml.html` are
+    used.
+    """
+    if not hasattr(file, 'read'):
+        file = open(file)
+    root = _parse(file, beautifulsoup, makeelement, **bsargs)
+    return etree.ElementTree(root)
+
+
+def convert_tree(beautiful_soup_tree, makeelement=None):
+    """Convert a BeautifulSoup tree to a list of Element trees.
+
+    Returns a list instead of a single root Element to support
+    HTML-like soup with more than one root element.
+
+    You can pass a different Element factory through the `makeelement`
+    keyword.
+    """
+    root = _convert_tree(beautiful_soup_tree, makeelement)
+    children = root.getchildren()
+    for child in children:
+        root.remove(child)
+    return children
+
+
+# helpers
+
+def _parse(source, beautifulsoup, makeelement, **bsargs):
+    if beautifulsoup is None:
+        beautifulsoup = BeautifulSoup
+    if hasattr(beautifulsoup, "HTML_ENTITIES"):  # bs3
+        if 'convertEntities' not in bsargs:
+            bsargs['convertEntities'] = 'html'
+    if hasattr(beautifulsoup, "DEFAULT_BUILDER_FEATURES"):  # bs4
+        if 'features' not in bsargs:
+            bsargs['features'] = 'html.parser'  # use Python html parser
+    tree = beautifulsoup(source, **bsargs)
+    root = _convert_tree(tree, makeelement)
+    # from ET: wrap the document in a html root element, if necessary
+    if len(root) == 1 and root[0].tag == "html":
+        return root[0]
+    root.tag = "html"
+    return root
+
+
+_parse_doctype_declaration = re.compile(
+    r'(?:\s|[<!])*DOCTYPE\s*HTML'
+    r'(?:\s+PUBLIC)?(?:\s+(\'[^\']*\'|"[^"]*"))?'
+    r'(?:\s+(\'[^\']*\'|"[^"]*"))?',
+    re.IGNORECASE).match
+
+
+class _PseudoTag:
+    # Minimal imitation of BeautifulSoup.Tag
+    def __init__(self, contents):
+        self.name = 'html'
+        self.attrs = []
+        self.contents = contents
+
+    def __iter__(self):
+        return self.contents.__iter__()
+
+
+def _convert_tree(beautiful_soup_tree, makeelement):
+    if makeelement is None:
+        makeelement = html.html_parser.makeelement
+
+    # Split the tree into three parts:
+    # i) everything before the root element: document type
+    # declaration, comments, processing instructions, whitespace
+    # ii) the root(s),
+    # iii) everything after the root: comments, processing
+    # instructions, whitespace
+    first_element_idx = last_element_idx = None
+    html_root = declaration = None
+    for i, e in enumerate(beautiful_soup_tree):
+        if isinstance(e, Tag):
+            if first_element_idx is None:
+                first_element_idx = i
+            last_element_idx = i
+            if html_root is None and e.name and e.name.lower() == 'html':
+                html_root = e
+        elif declaration is None and isinstance(e, _DECLARATION_OR_DOCTYPE):
+            declaration = e
+
+    # For a nice, well-formatted document, the variable roots below is
+    # a list consisting of a single <html> element. However, the document
+    # may be a soup like '<meta><head><title>Hello</head><body>Hi
+    # all<\p>'. In this example roots is a list containing meta, head
+    # and body elements.
+    if first_element_idx is None:
+        pre_root = post_root = []
+        roots = beautiful_soup_tree.contents
+    else:
+        pre_root = beautiful_soup_tree.contents[:first_element_idx]
+        roots = beautiful_soup_tree.contents[first_element_idx:last_element_idx+1]
+        post_root = beautiful_soup_tree.contents[last_element_idx+1:]
+
+    # Reorganize so that there is one <html> root...
+    if html_root is not None:
+        # ... use existing one if possible, ...
+        i = roots.index(html_root)
+        html_root.contents = roots[:i] + html_root.contents + roots[i+1:]
+    else:
+        # ... otherwise create a new one.
+        html_root = _PseudoTag(roots)
+
+    convert_node = _init_node_converters(makeelement)
+
+    # Process pre_root
+    res_root = convert_node(html_root)
+    prev = res_root
+    for e in reversed(pre_root):
+        converted = convert_node(e)
+        if converted is not None:
+            prev.addprevious(converted)
+            prev = converted
+
+    # ditto for post_root
+    prev = res_root
+    for e in post_root:
+        converted = convert_node(e)
+        if converted is not None:
+            prev.addnext(converted)
+            prev = converted
+
+    if declaration is not None:
+        try:
+            # bs4 provides full Doctype string
+            doctype_string = declaration.output_ready()
+        except AttributeError:
+            doctype_string = declaration.string
+
+        match = _parse_doctype_declaration(doctype_string)
+        if not match:
+            # Something is wrong if we end up in here. Since soupparser should
+            # tolerate errors, do not raise Exception, just let it pass.
+            pass
+        else:
+            external_id, sys_uri = match.groups()
+            docinfo = res_root.getroottree().docinfo
+            # strip quotes and update DOCTYPE values (any of None, '', '...')
+            docinfo.public_id = external_id and external_id[1:-1]
+            docinfo.system_url = sys_uri and sys_uri[1:-1]
+
+    return res_root
+
+
+def _init_node_converters(makeelement):
+    converters = {}
+    ordered_node_types = []
+
+    def converter(*types):
+        def add(handler):
+            for t in types:
+                converters[t] = handler
+                ordered_node_types.append(t)
+            return handler
+        return add
+
+    def find_best_converter(node):
+        for t in ordered_node_types:
+            if isinstance(node, t):
+                return converters[t]
+        return None
+
+    def convert_node(bs_node, parent=None):
+        # duplicated in convert_tag() below
+        try:
+            handler = converters[type(bs_node)]
+        except KeyError:
+            handler = converters[type(bs_node)] = find_best_converter(bs_node)
+        if handler is None:
+            return None
+        return handler(bs_node, parent)
+
+    def map_attrs(bs_attrs):
+        if isinstance(bs_attrs, dict):  # bs4
+            attribs = {}
+            for k, v in bs_attrs.items():
+                if isinstance(v, list):
+                    v = " ".join(v)
+                attribs[k] = unescape(v)
+        else:
+            attribs = {k: unescape(v) for k, v in bs_attrs}
+        return attribs
+
+    def append_text(parent, text):
+        if len(parent) == 0:
+            parent.text = (parent.text or '') + text
+        else:
+            parent[-1].tail = (parent[-1].tail or '') + text
+
+    # converters are tried in order of their definition
+
+    @converter(Tag, _PseudoTag)
+    def convert_tag(bs_node, parent):
+        attrs = bs_node.attrs
+        if parent is not None:
+            attribs = map_attrs(attrs) if attrs else None
+            res = etree.SubElement(parent, bs_node.name, attrib=attribs)
+        else:
+            attribs = map_attrs(attrs) if attrs else {}
+            res = makeelement(bs_node.name, attrib=attribs)
+
+        for child in bs_node:
+            # avoid double recursion by inlining convert_node(), see above
+            try:
+                handler = converters[type(child)]
+            except KeyError:
+                pass
+            else:
+                if handler is not None:
+                    handler(child, res)
+                continue
+            convert_node(child, res)
+        return res
+
+    @converter(Comment)
+    def convert_comment(bs_node, parent):
+        res = html.HtmlComment(bs_node)
+        if parent is not None:
+            parent.append(res)
+        return res
+
+    @converter(ProcessingInstruction)
+    def convert_pi(bs_node, parent):
+        if bs_node.endswith('?'):
+            # The PI is of XML style (<?as df?>) but BeautifulSoup
+            # interpreted it as being SGML style (<?as df>). Fix.
+            bs_node = bs_node[:-1]
+        res = etree.ProcessingInstruction(*bs_node.split(' ', 1))
+        if parent is not None:
+            parent.append(res)
+        return res
+
+    @converter(NavigableString)
+    def convert_text(bs_node, parent):
+        if parent is not None:
+            append_text(parent, unescape(bs_node))
+        return None
+
+    return convert_node
+
+
+# copied from ET's ElementSoup
+
+try:
+    from html.entities import name2codepoint  # Python 3
+except ImportError:
+    from htmlentitydefs import name2codepoint
+
+
+handle_entities = re.compile(r"&(\w+);").sub
+
+
+try:
+    unichr
+except NameError:
+    # Python 3
+    unichr = chr
+
+
+def unescape(string):
+    if not string:
+        return ''
+    # work around oddities in BeautifulSoup's entity handling
+    def unescape_entity(m):
+        try:
+            return unichr(name2codepoint[m.group(1)])
+        except KeyError:
+            return m.group(0)  # use as is
+    return handle_entities(unescape_entity, string)

.venv/lib/python3.9/site-packages/lxml/html/usedoctest.py

@@ -0,0 +1,13 @@
+"""Doctest module for HTML comparison.
+
+Usage::
+
+   >>> import lxml.html.usedoctest
+   >>> # now do your HTML doctests ...
+
+See `lxml.doctestcompare`.
+"""
+
+from lxml import doctestcompare
+
+doctestcompare.temp_install(html=True, del_module=__name__)

.venv/lib/python3.9/site-packages/lxml/includes/c14n.pxd

@@ -0,0 +1,25 @@
+from lxml.includes.tree cimport xmlDoc, xmlOutputBuffer, xmlChar
+from lxml.includes.xpath cimport xmlNodeSet
+
+cdef extern from "libxml/c14n.h" nogil:
+    cdef int xmlC14NDocDumpMemory(xmlDoc* doc,
+                                  xmlNodeSet* nodes,
+                                  int exclusive,
+                                  xmlChar** inclusive_ns_prefixes,
+                                  int with_comments,
+                                  xmlChar** doc_txt_ptr)
+
+    cdef int xmlC14NDocSave(xmlDoc* doc,
+                            xmlNodeSet* nodes,
+                            int exclusive,
+                            xmlChar** inclusive_ns_prefixes,
+                            int with_comments,
+                            char* filename,
+                            int compression)
+
+    cdef int xmlC14NDocSaveTo(xmlDoc* doc,
+                              xmlNodeSet* nodes,
+                              int exclusive,
+                              xmlChar** inclusive_ns_prefixes,
+                              int with_comments,
+                              xmlOutputBuffer* buffer)

.venv/lib/python3.9/site-packages/lxml/includes/config.pxd

@@ -0,0 +1,3 @@
+cdef extern from "etree_defs.h":
+    cdef bint ENABLE_THREADING
+    cdef bint ENABLE_SCHEMATRON

.venv/lib/python3.9/site-packages/lxml/includes/dtdvalid.pxd

@@ -0,0 +1,18 @@
+from lxml.includes cimport tree
+from lxml.includes.tree cimport xmlDoc, xmlDtd
+
+cdef extern from "libxml/valid.h" nogil:
+    ctypedef void (*xmlValidityErrorFunc)(void * ctx, const char * msg, ...) noexcept
+    ctypedef void (*xmlValidityWarningFunc)(void * ctx, const char * msg, ...) noexcept
+
+    ctypedef struct xmlValidCtxt:
+        void *userData
+        xmlValidityErrorFunc error
+        xmlValidityWarningFunc warning
+
+    cdef xmlValidCtxt* xmlNewValidCtxt()
+    cdef void xmlFreeValidCtxt(xmlValidCtxt* cur)
+
+    cdef int xmlValidateDtd(xmlValidCtxt* ctxt, xmlDoc* doc, xmlDtd* dtd)
+    cdef tree.xmlElement* xmlGetDtdElementDesc(
+        xmlDtd* dtd, tree.const_xmlChar* name)

.venv/lib/python3.9/site-packages/lxml/includes/etree_defs.h

@@ -0,0 +1,390 @@
+#ifndef HAS_ETREE_DEFS_H
+#define HAS_ETREE_DEFS_H
+
+/* quick check for Python/libxml2/libxslt devel setup */
+#include "Python.h"
+#ifndef PY_VERSION_HEX
+#  error the development package of Python (header files etc.) is not installed correctly
+#elif PY_VERSION_HEX < 0x03060000
+#  error this version of lxml requires Python 3.6 or later
+#endif
+
+#include "libxml/xmlversion.h"
+#ifndef LIBXML_VERSION
+#  error the development package of libxml2 (header files etc.) is not installed correctly
+#elif LIBXML_VERSION < 20700
+#  error minimum required version of libxml2 is 2.7.0
+#endif
+
+#include "libxslt/xsltconfig.h"
+#ifndef LIBXSLT_VERSION
+#  error the development package of libxslt (header files etc.) is not installed correctly
+#elif LIBXSLT_VERSION < 10123
+#  error minimum required version of libxslt is 1.1.23
+#endif
+
+
+/* v_arg functions */
+#define va_int(ap)     va_arg(ap, int)
+#define va_charptr(ap) va_arg(ap, char *)
+
+#ifdef PYPY_VERSION
+#    define IS_PYPY 1
+#else
+#    define IS_PYPY 0
+#endif
+
+/* unused */
+#define IS_PYTHON2 0
+#define IS_PYTHON3 1
+#undef LXML_UNICODE_STRINGS
+#define LXML_UNICODE_STRINGS 1
+
+#if !IS_PYPY
+#  define PyWeakref_LockObject(obj)          (NULL)
+#endif
+
+/* Threading is not currently supported by PyPy */
+#if IS_PYPY
+#  ifndef WITHOUT_THREADING
+#    define WITHOUT_THREADING
+#  endif
+#endif
+
+#if IS_PYPY
+#  ifndef PyUnicode_FromFormat
+#    define PyUnicode_FromFormat  PyString_FromFormat
+#  endif
+#  if !defined(PyBytes_FromFormat)
+#    ifdef PyString_FromFormat
+#      define PyBytes_FromFormat  PyString_FromFormat
+#    else
+#include <stdarg.h>
+static PyObject* PyBytes_FromFormat(const char* format, ...) {
+    PyObject *string;
+    va_list vargs;
+#ifdef HAVE_STDARG_PROTOTYPES
+    va_start(vargs, format);
+#else
+    va_start(vargs);
+#endif
+    string = PyUnicode_FromFormatV(format, vargs);
+    va_end(vargs);
+    if (string && PyUnicode_Check(string)) {
+        PyObject *bstring = PyUnicode_AsUTF8String(string);
+        Py_DECREF(string);
+        string = bstring;
+    }
+    if (string && !PyBytes_CheckExact(string)) {
+        Py_DECREF(string);
+        string = NULL;
+        PyErr_SetString(PyExc_TypeError, "String formatting and encoding failed to return bytes object");
+    }
+    return string;
+}
+#    endif
+#  endif
+#endif
+
+#if PY_VERSION_HEX >= 0x030B00A1
+/* Python 3.12 doesn't have wstr Unicode strings any more. */
+#undef PyUnicode_GET_DATA_SIZE
+#define PyUnicode_GET_DATA_SIZE(ustr)  (0)
+#undef PyUnicode_AS_DATA
+#define PyUnicode_AS_DATA(ustr)  (NULL)
+#undef PyUnicode_IS_READY
+#define PyUnicode_IS_READY(ustr)  (1)
+#endif
+
+#ifdef WITHOUT_THREADING
+#  undef PyEval_SaveThread
+#  define PyEval_SaveThread() (NULL)
+#  undef PyEval_RestoreThread
+#  define PyEval_RestoreThread(state)  if (state); else {}
+#  undef PyGILState_Ensure
+#  define PyGILState_Ensure() (PyGILState_UNLOCKED)
+#  undef PyGILState_Release
+#  define PyGILState_Release(state)  if (state); else {}
+#  undef  Py_UNBLOCK_THREADS
+#  define Py_UNBLOCK_THREADS  _save = NULL;
+#  undef  Py_BLOCK_THREADS
+#  define Py_BLOCK_THREADS  if (_save); else {}
+#endif
+
+#ifdef WITHOUT_THREADING
+#  define ENABLE_THREADING 0
+#else
+#  define ENABLE_THREADING 1
+#endif
+
+#if LIBXML_VERSION < 20704
+/* FIXME: hack to make new error reporting compile in old libxml2 versions */
+#  define xmlStructuredErrorContext NULL
+#  define xmlXIncludeProcessTreeFlagsData(n,o,d) xmlXIncludeProcessTreeFlags(n,o)
+#endif
+
+/* schematron was added in libxml2 2.6.21 */
+#ifdef LIBXML_SCHEMATRON_ENABLED
+#  define ENABLE_SCHEMATRON 1
+#else
+#  define ENABLE_SCHEMATRON 0
+#  define XML_SCHEMATRON_OUT_QUIET 0
+#  define XML_SCHEMATRON_OUT_XML 0
+#  define XML_SCHEMATRON_OUT_ERROR 0
+   typedef void xmlSchematron;
+   typedef void xmlSchematronParserCtxt;
+   typedef void xmlSchematronValidCtxt;
+#  define xmlSchematronNewDocParserCtxt(doc) NULL
+#  define xmlSchematronNewParserCtxt(file) NULL
+#  define xmlSchematronParse(ctxt) NULL
+#  define xmlSchematronFreeParserCtxt(ctxt)
+#  define xmlSchematronFree(schema)
+#  define xmlSchematronNewValidCtxt(schema, options) NULL
+#  define xmlSchematronValidateDoc(ctxt, doc) 0
+#  define xmlSchematronFreeValidCtxt(ctxt)
+#  define xmlSchematronSetValidStructuredErrors(ctxt, errorfunc, data)
+#endif
+
+#if LIBXML_VERSION < 20708
+#  define HTML_PARSE_NODEFDTD 4
+#endif
+#if LIBXML_VERSION < 20900
+#  define XML_PARSE_BIG_LINES 0x400000
+#endif
+#if LIBXML_VERSION < 21300
+#  define XML_PARSE_NO_XXE 0x800000
+#endif
+#if LIBXML_VERSION < 21400
+#  define XML_PARSE_UNZIP 0x1000000
+#  define XML_PARSE_NO_SYS_CATALOG 0x2000000
+#  define XML_PARSE_CATALOG_PI 0x4000000
+#endif
+#if LIBXML_VERSION < 21500
+#  define XML_PARSE_SKIP_IDS 0x8000000
+#endif
+
+#include "libxml/tree.h"
+#ifndef LIBXML2_NEW_BUFFER
+   typedef xmlBuffer xmlBuf;
+#  define xmlBufContent(buf) xmlBufferContent(buf)
+#  define xmlBufUse(buf) xmlBufferLength(buf)
+#endif
+
+#if LIBXML_VERSION < 21500
+#  define xmlCtxtIsStopped(p_ctxt)  ((p_ctxt)->disableSAX != 0)
+#endif
+
+/* libexslt 1.1.25+ support EXSLT functions in XPath */
+#if LIBXSLT_VERSION < 10125
+#define exsltDateXpathCtxtRegister(ctxt, prefix)
+#define exsltSetsXpathCtxtRegister(ctxt, prefix)
+#define exsltMathXpathCtxtRegister(ctxt, prefix)
+#define exsltStrXpathCtxtRegister(ctxt, prefix)
+#endif
+
+#define LXML_GET_XSLT_ENCODING(result_var, style) XSLT_GET_IMPORT_PTR(result_var, style, encoding)
+
+/* work around MSDEV 6.0 */
+#if (_MSC_VER == 1200) && (WINVER < 0x0500)
+long _ftol( double ); //defined by VC6 C libs
+long _ftol2( double dblSource ) { return _ftol( dblSource ); }
+#endif
+
+#ifdef __GNUC__
+/* Test for GCC > 2.95 */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95))
+#define unlikely_condition(x) __builtin_expect((x), 0)
+#else /* __GNUC__ > 2 ... */
+#define unlikely_condition(x) (x)
+#endif /* __GNUC__ > 2 ... */
+#else /* __GNUC__ */
+#define unlikely_condition(x) (x)
+#endif /* __GNUC__ */
+
+#ifndef Py_TYPE
+  #define Py_TYPE(ob)   (((PyObject*)(ob))->ob_type)
+#endif
+
+#define _fqtypename(o)  ((Py_TYPE(o))->tp_name)
+
+#define lxml_malloc(count, item_size) \
+    (unlikely_condition((size_t)(count) > (size_t) (PY_SSIZE_T_MAX / item_size)) ? NULL : \
+     (PyMem_Malloc((count) * item_size)))
+
+#define lxml_realloc(mem, count, item_size) \
+    (unlikely_condition((size_t)(count) > (size_t) (PY_SSIZE_T_MAX / item_size)) ? NULL : \
+     (PyMem_Realloc(mem, (count) * item_size)))
+
+#define lxml_free(mem)  PyMem_Free(mem)
+
+#define _isString(obj)   (PyUnicode_Check(obj) || PyBytes_Check(obj))
+
+#define _isElement(c_node) \
+        (((c_node)->type == XML_ELEMENT_NODE) || \
+         ((c_node)->type == XML_COMMENT_NODE) || \
+         ((c_node)->type == XML_ENTITY_REF_NODE) || \
+         ((c_node)->type == XML_PI_NODE))
+
+#define _isElementOrXInclude(c_node) \
+        (_isElement(c_node)                     || \
+         ((c_node)->type == XML_XINCLUDE_START) || \
+         ((c_node)->type == XML_XINCLUDE_END))
+
+#define _getNs(c_node) \
+        (((c_node)->ns == 0) ? 0 : ((c_node)->ns->href))
+
+
+#include "string.h"
+static void* lxml_unpack_xmldoc_capsule(PyObject* capsule, int* is_owned) {
+    xmlDoc *c_doc;
+    void *context;
+    *is_owned = 0;
+    if (unlikely_condition(!PyCapsule_IsValid(capsule, (const char*)"libxml2:xmlDoc"))) {
+        PyErr_SetString(
+                PyExc_TypeError,
+                "Not a valid capsule. The capsule argument must be a capsule object with name libxml2:xmlDoc");
+        return NULL;
+    }
+    c_doc = (xmlDoc*) PyCapsule_GetPointer(capsule, (const char*)"libxml2:xmlDoc");
+    if (unlikely_condition(!c_doc)) return NULL;
+
+    if (unlikely_condition(c_doc->type != XML_DOCUMENT_NODE && c_doc->type != XML_HTML_DOCUMENT_NODE)) {
+        PyErr_Format(
+            PyExc_ValueError,
+            "Illegal document provided: expected XML or HTML, found %d", (int)c_doc->type);
+        return NULL;
+    }
+
+    context = PyCapsule_GetContext(capsule);
+    if (unlikely_condition(!context && PyErr_Occurred())) return NULL;
+    if (context && strcmp((const char*) context, "destructor:xmlFreeDoc") == 0) {
+        /* take ownership by setting destructor to NULL */
+        if (PyCapsule_SetDestructor(capsule, NULL) == 0) {
+            /* ownership transferred => invalidate capsule by clearing its name */
+            if (unlikely_condition(PyCapsule_SetName(capsule, NULL))) {
+                /* this should never happen since everything above succeeded */
+                xmlFreeDoc(c_doc);
+                return NULL;
+            }
+            *is_owned = 1;
+        }
+    }
+    return c_doc;
+}
+
+/* Macro pair implementation of a depth first tree walker
+ *
+ * Calls the code block between the BEGIN and END macros for all elements
+ * below c_tree_top (exclusively), starting at c_node (inclusively iff
+ * 'inclusive' is 1).  The _ELEMENT_ variants will only stop on nodes
+ * that match _isElement(), the normal variant will stop on every node
+ * except text nodes.
+ *
+ * To traverse the node and all of its children and siblings in Pyrex, call
+ *    cdef xmlNode* some_node
+ *    BEGIN_FOR_EACH_ELEMENT_FROM(some_node.parent, some_node, 1)
+ *    # do something with some_node
+ *    END_FOR_EACH_ELEMENT_FROM(some_node)
+ *
+ * To traverse only the children and siblings of a node, call
+ *    cdef xmlNode* some_node
+ *    BEGIN_FOR_EACH_ELEMENT_FROM(some_node.parent, some_node, 0)
+ *    # do something with some_node
+ *    END_FOR_EACH_ELEMENT_FROM(some_node)
+ *
+ * To traverse only the children, do:
+ *    cdef xmlNode* some_node
+ *    some_node = parent_node.children
+ *    BEGIN_FOR_EACH_ELEMENT_FROM(parent_node, some_node, 1)
+ *    # do something with some_node
+ *    END_FOR_EACH_ELEMENT_FROM(some_node)
+ *
+ * NOTE: 'some_node' MUST be a plain 'xmlNode*' !
+ *
+ * NOTE: parent modification during the walk can divert the iterator, but
+ *       should not segfault !
+ */
+
+#define _LX__ELEMENT_MATCH(c_node, only_elements)  \
+    ((only_elements) ? (_isElement(c_node)) : 1)
+
+#define _LX__ADVANCE_TO_NEXT(c_node, only_elements)                        \
+    while ((c_node != 0) && (!_LX__ELEMENT_MATCH(c_node, only_elements)))  \
+        c_node = c_node->next;
+
+#define _LX__TRAVERSE_TO_NEXT(c_stop_node, c_node, only_elements)   \
+{                                                                   \
+    /* walk through children first */                               \
+    xmlNode* _lx__next = c_node->children;		            \
+    if (_lx__next != 0) {                                           \
+        if (c_node->type == XML_ENTITY_REF_NODE || c_node->type == XML_DTD_NODE) { \
+            _lx__next = 0;                                          \
+        } else {                                                    \
+            _LX__ADVANCE_TO_NEXT(_lx__next, only_elements)	    \
+        }                                                           \
+    }							            \
+    if ((_lx__next == 0) && (c_node != c_stop_node)) {              \
+        /* try siblings */                                          \
+        _lx__next = c_node->next;                                   \
+        _LX__ADVANCE_TO_NEXT(_lx__next, only_elements)              \
+        /* back off through parents */                              \
+        while (_lx__next == 0) {                                    \
+            c_node = c_node->parent;                                \
+            if (c_node == 0)                                        \
+                break;                                              \
+            if (c_node == c_stop_node)                              \
+                break;                                              \
+            if ((only_elements) && !_isElement(c_node))	            \
+                break;                                              \
+            /* we already traversed the parents -> siblings */      \
+            _lx__next = c_node->next;                               \
+            _LX__ADVANCE_TO_NEXT(_lx__next, only_elements)	    \
+        }                                                           \
+    }                                                               \
+    c_node = _lx__next;                                             \
+}
+
+#define _LX__BEGIN_FOR_EACH_FROM(c_tree_top, c_node, inclusive, only_elements)     \
+{									      \
+    if (c_node != 0) {							      \
+        const xmlNode* _lx__tree_top = (c_tree_top);                          \
+        const int _lx__only_elements = (only_elements);                       \
+        /* make sure we start at an element */                   	      \
+        if (!_LX__ELEMENT_MATCH(c_node, _lx__only_elements)) {		      \
+            /* we skip the node, so 'inclusive' is irrelevant */              \
+            if (c_node == _lx__tree_top)                                      \
+                c_node = 0; /* nothing to traverse */                         \
+            else {                                                            \
+                c_node = c_node->next;                                        \
+                _LX__ADVANCE_TO_NEXT(c_node, _lx__only_elements)              \
+            }                                                                 \
+        } else if (! (inclusive)) {                                           \
+            /* skip the first node */                                         \
+            _LX__TRAVERSE_TO_NEXT(_lx__tree_top, c_node, _lx__only_elements)  \
+        }                                                                     \
+                                                                              \
+        /* now run the user code on the elements we find */                   \
+        while (c_node != 0) {                                                 \
+            /* here goes the code to be run for each element */
+
+#define _LX__END_FOR_EACH_FROM(c_node)                                        \
+            _LX__TRAVERSE_TO_NEXT(_lx__tree_top, c_node, _lx__only_elements)  \
+        }                                                                     \
+    }                                                                         \
+}
+
+
+#define BEGIN_FOR_EACH_ELEMENT_FROM(c_tree_top, c_node, inclusive)   \
+    _LX__BEGIN_FOR_EACH_FROM(c_tree_top, c_node, inclusive, 1)
+
+#define END_FOR_EACH_ELEMENT_FROM(c_node)   \
+    _LX__END_FOR_EACH_FROM(c_node)
+
+#define BEGIN_FOR_EACH_FROM(c_tree_top, c_node, inclusive)   \
+    _LX__BEGIN_FOR_EACH_FROM(c_tree_top, c_node, inclusive, 0)
+
+#define END_FOR_EACH_FROM(c_node)   \
+    _LX__END_FOR_EACH_FROM(c_node)
+
+
+#endif /* HAS_ETREE_DEFS_H */

.venv/lib/python3.9/site-packages/lxml/includes/etreepublic.pxd

@@ -0,0 +1,237 @@
+# public Cython/C interface to lxml.etree
+
+from lxml.includes cimport tree
+from lxml.includes.tree cimport const_xmlChar
+
+cdef extern from "lxml-version.h":
+    cdef char* LXML_VERSION_STRING
+
+cdef extern from "etree_defs.h":
+    # test if c_node is considered an Element (i.e. Element, Comment, etc.)
+    cdef bint _isElement(tree.xmlNode* c_node) noexcept nogil
+
+    # return the namespace URI of the node or NULL
+    cdef const_xmlChar* _getNs(tree.xmlNode* node) noexcept nogil
+
+    # pair of macros for tree traversal
+    cdef void BEGIN_FOR_EACH_ELEMENT_FROM(tree.xmlNode* tree_top,
+                                          tree.xmlNode* start_node,
+                                          int start_node_inclusive) noexcept nogil
+    cdef void END_FOR_EACH_ELEMENT_FROM(tree.xmlNode* start_node) noexcept nogil
+
+cdef extern from "etree_api.h":
+
+    # first function to call!
+    cdef int import_lxml__etree() except -1
+
+    ##########################################################################
+    # public ElementTree API classes
+
+    cdef class lxml.etree._Document [ object LxmlDocument ]:
+        cdef tree.xmlDoc* _c_doc
+
+    cdef class lxml.etree._Element [ object LxmlElement ]:
+        cdef _Document _doc
+        cdef tree.xmlNode* _c_node
+
+    cdef class lxml.etree.ElementBase(_Element) [ object LxmlElementBase ]:
+        pass
+
+    cdef class lxml.etree._ElementTree [ object LxmlElementTree ]:
+        cdef _Document _doc
+        cdef _Element  _context_node
+
+    cdef class lxml.etree.ElementClassLookup [ object LxmlElementClassLookup ]:
+        cdef object (*_lookup_function)(object, _Document, tree.xmlNode*)
+
+    cdef class lxml.etree.FallbackElementClassLookup(ElementClassLookup) \
+             [ object LxmlFallbackElementClassLookup ]:
+        cdef ElementClassLookup fallback
+        cdef object (*_fallback_function)(object, _Document, tree.xmlNode*)
+
+    ##########################################################################
+    # creating Element objects
+
+    # create an Element for a C-node in the Document
+    cdef _Element elementFactory(_Document doc, tree.xmlNode* c_node)
+
+    # create an ElementTree for an Element
+    cdef _ElementTree elementTreeFactory(_Element context_node)
+
+    # create an ElementTree subclass for an Element
+    cdef _ElementTree newElementTree(_Element context_node, object subclass)
+
+    # create an ElementTree from an external document
+    cdef _ElementTree adoptExternalDocument(tree.xmlDoc* c_doc, parser, bint is_owned)
+
+    # create a new Element for an existing or new document (doc = None)
+    # builds Python object after setting text, tail, namespaces and attributes
+    cdef _Element makeElement(tag, _Document doc, parser,
+                              text, tail, attrib, nsmap)
+
+    # create a new SubElement for an existing parent
+    # builds Python object after setting text, tail, namespaces and attributes
+    cdef _Element makeSubElement(_Element parent, tag, text, tail,
+                                 attrib, nsmap)
+
+    # deep copy a node to include it in the Document
+    cdef _Element deepcopyNodeToDocument(_Document doc, tree.xmlNode* c_root)
+
+    # set the internal lookup function for Element/Comment/PI classes
+    # use setElementClassLookupFunction(NULL, None) to reset it
+    # note that the lookup function *must always* return an _Element subclass!
+    cdef void setElementClassLookupFunction(
+         object (*function)(object, _Document, tree.xmlNode*), object state)
+
+    # lookup function that always returns the default Element class
+    # note that the first argument is expected to be None!
+    cdef object lookupDefaultElementClass(_1, _Document _2,
+                                          tree.xmlNode* c_node)
+
+    # lookup function for namespace/tag specific Element classes
+    # note that the first argument is expected to be None!
+    cdef object lookupNamespaceElementClass(_1, _Document _2,
+                                            tree.xmlNode* c_node)
+
+    # call the fallback lookup function of a FallbackElementClassLookup
+    cdef object callLookupFallback(FallbackElementClassLookup lookup,
+                                   _Document doc, tree.xmlNode* c_node)
+
+    ##########################################################################
+    # XML attribute access
+
+    # return an attribute value for a C attribute on a C element node
+    cdef unicode attributeValue(tree.xmlNode* c_element,
+                                tree.xmlAttr* c_attrib_node)
+
+    # return the value of the attribute with 'ns' and 'name' (or None)
+    cdef unicode attributeValueFromNsName(tree.xmlNode* c_element,
+                                          const_xmlChar* c_ns, const_xmlChar* c_name)
+
+    # return the value of attribute "{ns}name", or the default value
+    cdef object getAttributeValue(_Element element, key, default)
+
+    # return an iterator over attribute names (1), values (2) or items (3)
+    # attributes must not be removed during iteration!
+    cdef object iterattributes(_Element element, int keysvalues)
+
+    # return the list of all attribute names (1), values (2) or items (3)
+    cdef list collectAttributes(tree.xmlNode* c_element, int keysvalues)
+
+    # set an attribute value on an element
+    # on failure, sets an exception and returns -1
+    cdef int setAttributeValue(_Element element, key, value) except -1
+
+    # delete an attribute
+    # on failure, sets an exception and returns -1
+    cdef int delAttribute(_Element element, key) except -1
+
+    # delete an attribute based on name and namespace URI
+    # returns -1 if the attribute was not found (no exception)
+    cdef int delAttributeFromNsName(tree.xmlNode* c_element,
+                                    const_xmlChar* c_href, const_xmlChar* c_name) noexcept
+
+    ##########################################################################
+    # XML node helper functions
+
+    # check if the element has at least one child
+    cdef bint hasChild(tree.xmlNode* c_node) noexcept nogil
+
+    # find child element number 'index' (supports negative indexes)
+    cdef tree.xmlNode* findChild(tree.xmlNode* c_node,
+                                 Py_ssize_t index) noexcept nogil
+
+    # find child element number 'index' starting at first one
+    cdef tree.xmlNode* findChildForwards(tree.xmlNode* c_node,
+                                         Py_ssize_t index) nogil
+
+    # find child element number 'index' starting at last one
+    cdef tree.xmlNode* findChildBackwards(tree.xmlNode* c_node,
+                                          Py_ssize_t index) nogil
+
+    # return next/previous sibling element of the node
+    cdef tree.xmlNode* nextElement(tree.xmlNode* c_node) nogil
+    cdef tree.xmlNode* previousElement(tree.xmlNode* c_node) nogil
+
+    ##########################################################################
+    # iterators (DEPRECATED API, don't use in new code!)
+
+    cdef class lxml.etree._ElementTagMatcher [ object LxmlElementTagMatcher ]:
+        cdef char* _href
+        cdef char* _name
+
+    # store "{ns}tag" (or None) filter for this matcher or element iterator
+    # ** unless _href *and* _name are set up 'by hand', this function *must*
+    # ** be called when subclassing the iterator below!
+    cdef void initTagMatch(_ElementTagMatcher matcher, tag)
+
+    cdef class lxml.etree._ElementIterator(_ElementTagMatcher) [
+        object LxmlElementIterator ]:
+        cdef _Element _node
+        cdef tree.xmlNode* (*_next_element)(tree.xmlNode*)
+
+    # store the initial node of the iterator if it matches the required tag
+    # or its next matching sibling if not
+    cdef void iteratorStoreNext(_ElementIterator iterator, _Element node)
+
+    ##########################################################################
+    # other helper functions
+
+    # check if a C node matches a tag name and namespace
+    # (NULL allowed for each => always matches)
+    cdef int tagMatches(tree.xmlNode* c_node, const_xmlChar* c_href, const_xmlChar* c_name)
+
+    # convert a UTF-8 char* to a Python unicode string
+    cdef unicode pyunicode(const_xmlChar* s)
+
+    # convert the string to UTF-8 using the normal lxml.etree semantics
+    cdef bytes utf8(object s)
+
+    # split a tag into a (URI, name) tuple, return None as URI for '{}tag'
+    cdef tuple getNsTag(object tag)
+
+    # split a tag into a (URI, name) tuple, return b'' as URI for '{}tag'
+    cdef tuple getNsTagWithEmptyNs(object tag)
+
+    # get the "{ns}tag" string for a C node
+    cdef unicode namespacedName(tree.xmlNode* c_node)
+
+    # get the "{ns}tag" string for a href/tagname pair (c_ns may be NULL)
+    cdef unicode namespacedNameFromNsName(const_xmlChar* c_ns, const_xmlChar* c_tag)
+
+    # check if the node has a text value (which may be '')
+    cdef bint hasText(tree.xmlNode* c_node) nogil
+
+    # check if the node has a tail value (which may be '')
+    cdef bint hasTail(tree.xmlNode* c_node) nogil
+
+    # get the text content of an element (or None)
+    cdef unicode textOf(tree.xmlNode* c_node)
+
+    # get the tail content of an element (or None)
+    cdef unicode tailOf(tree.xmlNode* c_node)
+
+    # set the text value of an element
+    cdef int setNodeText(tree.xmlNode* c_node, text) except -1
+
+    # set the tail text value of an element
+    cdef int setTailText(tree.xmlNode* c_node, text) except -1
+
+    # append an element to the children of a parent element
+    # deprecated: don't use, does not propagate exceptions!
+    # use appendChildToElement() instead
+    cdef void appendChild(_Element parent, _Element child)
+
+    # added in lxml 3.3 as a safe replacement for appendChild()
+    # return -1 for exception, 0 for ok
+    cdef int appendChildToElement(_Element parent, _Element child) except -1
+
+    # recursively lookup a namespace in element or ancestors, or create it
+    cdef tree.xmlNs* findOrBuildNodeNsPrefix(
+        _Document doc, tree.xmlNode* c_node, const_xmlChar* href, const_xmlChar* prefix)
+
+    # find the Document of an Element, ElementTree or Document (itself!)
+    cdef _Document documentOrRaise(object input)
+
+    # find the root Element of an Element (itself!), ElementTree or Document
+    cdef _Element rootNodeOrRaise(object input)

.venv/lib/python3.9/site-packages/lxml/includes/extlibs/libcharset.h

@@ -0,0 +1,45 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU CHARSET Library.
+
+   The GNU CHARSET Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU CHARSET Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with the GNU CHARSET Library; see the file COPYING.LIB.  If not,
+   see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBCHARSET_H
+#define _LIBCHARSET_H
+
+#include <localcharset.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Support for relocatable packages.  */
+
+/* Sets the original and the current installation prefix of the package.
+   Relocation simply replaces a pathname starting with the original prefix
+   by the corresponding pathname with the current prefix instead.  Both
+   prefixes should be directory names without trailing slash (i.e. use ""
+   instead of "/").  */
+extern void libcharset_set_relocation_prefix (const char *orig_prefix,
+                                              const char *curr_prefix);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _LIBCHARSET_H */

.venv/lib/python3.9/site-packages/lxml/includes/extlibs/localcharset.h

@@ -0,0 +1,137 @@
+/* Determine a canonical name for the current locale's character encoding.
+   Copyright (C) 2000-2003, 2009-2019 Free Software Foundation, Inc.
+   This file is part of the GNU CHARSET Library.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LOCALCHARSET_H
+#define _LOCALCHARSET_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed below.
+   The result must not be freed; it is statically allocated.  The result
+   becomes invalid when setlocale() is used to change the global locale, or
+   when the value of one of the environment variables LC_ALL, LC_CTYPE, LANG
+   is changed; threads in multithreaded programs should not do this.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+extern const char * locale_charset (void);
+
+/* About GNU canonical names for character encodings:
+
+   Every canonical name must be supported by GNU libiconv.  Support by GNU libc
+   is also desirable.
+
+   The name is case insensitive.  Usually an upper case MIME charset name is
+   preferred.
+
+   The current list of these GNU canonical names is:
+
+       name              MIME?             used by which systems
+                                    (darwin = Mac OS X, windows = native Windows)
+
+   ASCII, ANSI_X3.4-1968       glibc solaris freebsd netbsd darwin minix cygwin
+   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-3              Y   glibc solaris cygwin
+   ISO-8859-4              Y   hpux osf solaris freebsd netbsd openbsd darwin
+   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-6              Y   glibc aix hpux solaris cygwin
+   ISO-8859-7              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin zos
+   ISO-8859-8              Y   glibc aix hpux osf solaris cygwin zos
+   ISO-8859-9              Y   glibc aix hpux irix osf solaris freebsd darwin cygwin zos
+   ISO-8859-13                 glibc hpux solaris freebsd netbsd openbsd darwin cygwin
+   ISO-8859-14                 glibc cygwin
+   ISO-8859-15                 glibc aix irix osf solaris freebsd netbsd openbsd darwin cygwin
+   KOI8-R                  Y   glibc hpux solaris freebsd netbsd openbsd darwin
+   KOI8-U                  Y   glibc freebsd netbsd openbsd darwin cygwin
+   KOI8-T                      glibc
+   CP437                       dos
+   CP775                       dos
+   CP850                       aix osf dos
+   CP852                       dos
+   CP855                       dos
+   CP856                       aix
+   CP857                       dos
+   CP861                       dos
+   CP862                       dos
+   CP864                       dos
+   CP865                       dos
+   CP866                       freebsd netbsd openbsd darwin dos
+   CP869                       dos
+   CP874                       windows dos
+   CP922                       aix
+   CP932                       aix cygwin windows dos
+   CP943                       aix zos
+   CP949                       osf darwin windows dos
+   CP950                       windows dos
+   CP1046                      aix
+   CP1124                      aix
+   CP1125                      dos
+   CP1129                      aix
+   CP1131                      freebsd darwin
+   CP1250                      windows
+   CP1251                      glibc hpux solaris freebsd netbsd openbsd darwin cygwin windows
+   CP1252                      aix windows
+   CP1253                      windows
+   CP1254                      windows
+   CP1255                      glibc windows
+   CP1256                      windows
+   CP1257                      windows
+   GB2312                  Y   glibc aix hpux irix solaris freebsd netbsd darwin cygwin zos
+   EUC-JP                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin
+   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin zos
+   EUC-TW                      glibc aix hpux irix osf solaris netbsd
+   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin cygwin zos
+   BIG5-HKSCS                  glibc hpux solaris netbsd darwin
+   GBK                         glibc aix osf solaris freebsd darwin cygwin windows dos
+   GB18030                     glibc hpux solaris freebsd netbsd darwin
+   SHIFT_JIS               Y   hpux osf solaris freebsd netbsd darwin
+   JOHAB                       glibc solaris windows
+   TIS-620                     glibc aix hpux osf solaris cygwin zos
+   VISCII                  Y   glibc
+   TCVN5712-1                  glibc
+   ARMSCII-8                   glibc freebsd netbsd darwin
+   GEORGIAN-PS                 glibc cygwin
+   PT154                       glibc netbsd cygwin
+   HP-ROMAN8                   hpux
+   HP-ARABIC8                  hpux
+   HP-GREEK8                   hpux
+   HP-HEBREW8                  hpux
+   HP-TURKISH8                 hpux
+   HP-KANA8                    hpux
+   DEC-KANJI                   osf
+   DEC-HANYU                   osf
+   UTF-8                   Y   glibc aix hpux osf solaris netbsd darwin cygwin zos
+
+   Note: Names which are not marked as being a MIME name should not be used in
+   Internet protocols for information interchange (mail, news, etc.).
+
+   Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names.  Applications
+   must understand both names and treat them as equivalent.
+ */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _LOCALCHARSET_H */

.venv/lib/python3.9/site-packages/lxml/includes/extlibs/zconf.h

@@ -0,0 +1,543 @@
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#ifndef ZCONF_H
+#define ZCONF_H
+
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ * Even better than compiling with -DZ_PREFIX would be to use configure to set
+ * this permanently in zconf.h using "./configure --zprefix".
+ */
+#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
+#  define Z_PREFIX_SET
+
+/* all linked symbols and init macros */
+#  define _dist_code            z__dist_code
+#  define _length_code          z__length_code
+#  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
+#  define _tr_flush_block       z__tr_flush_block
+#  define _tr_init              z__tr_init
+#  define _tr_stored_block      z__tr_stored_block
+#  define _tr_tally             z__tr_tally
+#  define adler32               z_adler32
+#  define adler32_combine       z_adler32_combine
+#  define adler32_combine64     z_adler32_combine64
+#  define adler32_z             z_adler32_z
+#  ifndef Z_SOLO
+#    define compress              z_compress
+#    define compress2             z_compress2
+#    define compressBound         z_compressBound
+#  endif
+#  define crc32                 z_crc32
+#  define crc32_combine         z_crc32_combine
+#  define crc32_combine64       z_crc32_combine64
+#  define crc32_combine_gen     z_crc32_combine_gen
+#  define crc32_combine_gen64   z_crc32_combine_gen64
+#  define crc32_combine_op      z_crc32_combine_op
+#  define crc32_z               z_crc32_z
+#  define deflate               z_deflate
+#  define deflateBound          z_deflateBound
+#  define deflateCopy           z_deflateCopy
+#  define deflateEnd            z_deflateEnd
+#  define deflateGetDictionary  z_deflateGetDictionary
+#  define deflateInit           z_deflateInit
+#  define deflateInit2          z_deflateInit2
+#  define deflateInit2_         z_deflateInit2_
+#  define deflateInit_          z_deflateInit_
+#  define deflateParams         z_deflateParams
+#  define deflatePending        z_deflatePending
+#  define deflatePrime          z_deflatePrime
+#  define deflateReset          z_deflateReset
+#  define deflateResetKeep      z_deflateResetKeep
+#  define deflateSetDictionary  z_deflateSetDictionary
+#  define deflateSetHeader      z_deflateSetHeader
+#  define deflateTune           z_deflateTune
+#  define deflate_copyright     z_deflate_copyright
+#  define get_crc_table         z_get_crc_table
+#  ifndef Z_SOLO
+#    define gz_error              z_gz_error
+#    define gz_intmax             z_gz_intmax
+#    define gz_strwinerror        z_gz_strwinerror
+#    define gzbuffer              z_gzbuffer
+#    define gzclearerr            z_gzclearerr
+#    define gzclose               z_gzclose
+#    define gzclose_r             z_gzclose_r
+#    define gzclose_w             z_gzclose_w
+#    define gzdirect              z_gzdirect
+#    define gzdopen               z_gzdopen
+#    define gzeof                 z_gzeof
+#    define gzerror               z_gzerror
+#    define gzflush               z_gzflush
+#    define gzfread               z_gzfread
+#    define gzfwrite              z_gzfwrite
+#    define gzgetc                z_gzgetc
+#    define gzgetc_               z_gzgetc_
+#    define gzgets                z_gzgets
+#    define gzoffset              z_gzoffset
+#    define gzoffset64            z_gzoffset64
+#    define gzopen                z_gzopen
+#    define gzopen64              z_gzopen64
+#    ifdef _WIN32
+#      define gzopen_w              z_gzopen_w
+#    endif
+#    define gzprintf              z_gzprintf
+#    define gzputc                z_gzputc
+#    define gzputs                z_gzputs
+#    define gzread                z_gzread
+#    define gzrewind              z_gzrewind
+#    define gzseek                z_gzseek
+#    define gzseek64              z_gzseek64
+#    define gzsetparams           z_gzsetparams
+#    define gztell                z_gztell
+#    define gztell64              z_gztell64
+#    define gzungetc              z_gzungetc
+#    define gzvprintf             z_gzvprintf
+#    define gzwrite               z_gzwrite
+#  endif
+#  define inflate               z_inflate
+#  define inflateBack           z_inflateBack
+#  define inflateBackEnd        z_inflateBackEnd
+#  define inflateBackInit       z_inflateBackInit
+#  define inflateBackInit_      z_inflateBackInit_
+#  define inflateCodesUsed      z_inflateCodesUsed
+#  define inflateCopy           z_inflateCopy
+#  define inflateEnd            z_inflateEnd
+#  define inflateGetDictionary  z_inflateGetDictionary
+#  define inflateGetHeader      z_inflateGetHeader
+#  define inflateInit           z_inflateInit
+#  define inflateInit2          z_inflateInit2
+#  define inflateInit2_         z_inflateInit2_
+#  define inflateInit_          z_inflateInit_
+#  define inflateMark           z_inflateMark
+#  define inflatePrime          z_inflatePrime
+#  define inflateReset          z_inflateReset
+#  define inflateReset2         z_inflateReset2
+#  define inflateResetKeep      z_inflateResetKeep
+#  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateSync           z_inflateSync
+#  define inflateSyncPoint      z_inflateSyncPoint
+#  define inflateUndermine      z_inflateUndermine
+#  define inflateValidate       z_inflateValidate
+#  define inflate_copyright     z_inflate_copyright
+#  define inflate_fast          z_inflate_fast
+#  define inflate_table         z_inflate_table
+#  ifndef Z_SOLO
+#    define uncompress            z_uncompress
+#    define uncompress2           z_uncompress2
+#  endif
+#  define zError                z_zError
+#  ifndef Z_SOLO
+#    define zcalloc               z_zcalloc
+#    define zcfree                z_zcfree
+#  endif
+#  define zlibCompileFlags      z_zlibCompileFlags
+#  define zlibVersion           z_zlibVersion
+
+/* all zlib typedefs in zlib.h and zconf.h */
+#  define Byte                  z_Byte
+#  define Bytef                 z_Bytef
+#  define alloc_func            z_alloc_func
+#  define charf                 z_charf
+#  define free_func             z_free_func
+#  ifndef Z_SOLO
+#    define gzFile                z_gzFile
+#  endif
+#  define gz_header             z_gz_header
+#  define gz_headerp            z_gz_headerp
+#  define in_func               z_in_func
+#  define intf                  z_intf
+#  define out_func              z_out_func
+#  define uInt                  z_uInt
+#  define uIntf                 z_uIntf
+#  define uLong                 z_uLong
+#  define uLongf                z_uLongf
+#  define voidp                 z_voidp
+#  define voidpc                z_voidpc
+#  define voidpf                z_voidpf
+
+/* all zlib structs in zlib.h and zconf.h */
+#  define gz_header_s           z_gz_header_s
+#  define internal_state        z_internal_state
+
+#endif
+
+#if defined(__MSDOS__) && !defined(MSDOS)
+#  define MSDOS
+#endif
+#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
+#  define OS2
+#endif
+#if defined(_WINDOWS) && !defined(WINDOWS)
+#  define WINDOWS
+#endif
+#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
+#  ifndef WIN32
+#    define WIN32
+#  endif
+#endif
+#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
+#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
+#    ifndef SYS16BIT
+#      define SYS16BIT
+#    endif
+#  endif
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#ifdef SYS16BIT
+#  define MAXSEG_64K
+#endif
+#ifdef MSDOS
+#  define UNALIGNED_OK
+#endif
+
+#ifdef __STDC_VERSION__
+#  ifndef STDC
+#    define STDC
+#  endif
+#  if __STDC_VERSION__ >= 199901L
+#    ifndef STDC99
+#      define STDC99
+#    endif
+#  endif
+#endif
+#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
+#  define STDC
+#endif
+
+#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
+#  define STDC
+#endif
+
+#ifndef STDC
+#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+#    define const       /* note: need a more gentle solution here */
+#  endif
+#endif
+
+#if defined(ZLIB_CONST) && !defined(z_const)
+#  define z_const const
+#else
+#  define z_const
+#endif
+
+#ifdef Z_SOLO
+#  ifdef _WIN64
+     typedef unsigned long long z_size_t;
+#  else
+     typedef unsigned long z_size_t;
+#  endif
+#else
+#  define z_longlong long long
+#  if defined(NO_SIZE_T)
+     typedef unsigned NO_SIZE_T z_size_t;
+#  elif defined(STDC)
+#    include <stddef.h>
+     typedef size_t z_size_t;
+#  else
+     typedef unsigned long z_size_t;
+#  endif
+#  undef z_longlong
+#endif
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+#  ifdef MAXSEG_64K
+#    define MAX_MEM_LEVEL 8
+#  else
+#    define MAX_MEM_LEVEL 9
+#  endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+#  define MAX_WBITS   15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+            (1 << (windowBits+2)) +  (1 << (memLevel+9))
+ that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+   The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
+ for small objects.
+*/
+
+                        /* Type declarations */
+
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#ifdef SYS16BIT
+#  if defined(M_I86SM) || defined(M_I86MM)
+     /* MSC small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef _MSC_VER
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#  if (defined(__SMALL__) || defined(__MEDIUM__))
+     /* Turbo C small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef __BORLANDC__
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#endif
+
+#if defined(WINDOWS) || defined(WIN32)
+   /* If building or using zlib as a DLL, define ZLIB_DLL.
+    * This is not mandatory, but it offers a little performance increase.
+    */
+#  ifdef ZLIB_DLL
+#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
+#      ifdef ZLIB_INTERNAL
+#        define ZEXTERN extern __declspec(dllexport)
+#      else
+#        define ZEXTERN extern __declspec(dllimport)
+#      endif
+#    endif
+#  endif  /* ZLIB_DLL */
+   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
+    * define ZLIB_WINAPI.
+    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
+    */
+#  ifdef ZLIB_WINAPI
+#    ifdef FAR
+#      undef FAR
+#    endif
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
+#    include <windows.h>
+     /* No need for _export, use ZLIB.DEF instead. */
+     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
+#    define ZEXPORT WINAPI
+#    ifdef WIN32
+#      define ZEXPORTVA WINAPIV
+#    else
+#      define ZEXPORTVA FAR CDECL
+#    endif
+#  endif
+#endif
+
+#if defined (__BEOS__)
+#  ifdef ZLIB_DLL
+#    ifdef ZLIB_INTERNAL
+#      define ZEXPORT   __declspec(dllexport)
+#      define ZEXPORTVA __declspec(dllexport)
+#    else
+#      define ZEXPORT   __declspec(dllimport)
+#      define ZEXPORTVA __declspec(dllimport)
+#    endif
+#  endif
+#endif
+
+#ifndef ZEXTERN
+#  define ZEXTERN extern
+#endif
+#ifndef ZEXPORT
+#  define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+#  define ZEXPORTVA
+#endif
+
+#ifndef FAR
+#  define FAR
+#endif
+
+#if !defined(__MACTYPES__)
+typedef unsigned char  Byte;  /* 8 bits */
+#endif
+typedef unsigned int   uInt;  /* 16 bits or more */
+typedef unsigned long  uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+#  define Bytef Byte FAR
+#else
+   typedef Byte  FAR Bytef;
+#endif
+typedef char  FAR charf;
+typedef int   FAR intf;
+typedef uInt  FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+   typedef void const *voidpc;
+   typedef void FAR   *voidpf;
+   typedef void       *voidp;
+#else
+   typedef Byte const *voidpc;
+   typedef Byte FAR   *voidpf;
+   typedef Byte       *voidp;
+#endif
+
+#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (UINT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
+#  endif
+#endif
+
+#ifdef Z_U4
+   typedef Z_U4 z_crc_t;
+#else
+   typedef unsigned long z_crc_t;
+#endif
+
+#if 1    /* was set to #if 1 by ./configure */
+#  define Z_HAVE_UNISTD_H
+#endif
+
+#if 1    /* was set to #if 1 by ./configure */
+#  define Z_HAVE_STDARG_H
+#endif
+
+#ifdef STDC
+#  ifndef Z_SOLO
+#    include <sys/types.h>      /* for off_t */
+#  endif
+#endif
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
+#ifdef _WIN32
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
+#endif
+
+/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
+ * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
+ * though the former does not conform to the LFS document), but considering
+ * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
+ * equivalently requesting no 64-bit operations
+ */
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#  undef _LARGEFILE64_SOURCE
+#endif
+
+#ifndef Z_HAVE_UNISTD_H
+#  ifdef __WATCOMC__
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_SOLO
+#  if defined(Z_HAVE_UNISTD_H)
+#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+#    ifdef VMS
+#      include <unixio.h>       /* for off_t */
+#    endif
+#    ifndef z_off_t
+#      define z_off_t off_t
+#    endif
+#  endif
+#endif
+
+#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
+#  define Z_LFS64
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
+#  define Z_LARGE64
+#endif
+
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
+#  define Z_WANT64
+#endif
+
+#if !defined(SEEK_SET) && !defined(Z_SOLO)
+#  define SEEK_SET        0       /* Seek from beginning of file.  */
+#  define SEEK_CUR        1       /* Seek from current position.  */
+#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
+#endif
+
+#ifndef z_off_t
+#  define z_off_t long
+#endif
+
+#if !defined(_WIN32) && defined(Z_LARGE64)
+#  define z_off64_t off64_t
+#else
+#  if defined(_WIN32) && !defined(__GNUC__)
+#    define z_off64_t __int64
+#  else
+#    define z_off64_t z_off_t
+#  endif
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+  #pragma map(deflateInit_,"DEIN")
+  #pragma map(deflateInit2_,"DEIN2")
+  #pragma map(deflateEnd,"DEEND")
+  #pragma map(deflateBound,"DEBND")
+  #pragma map(inflateInit_,"ININ")
+  #pragma map(inflateInit2_,"ININ2")
+  #pragma map(inflateEnd,"INEND")
+  #pragma map(inflateSync,"INSY")
+  #pragma map(inflateSetDictionary,"INSEDI")
+  #pragma map(compressBound,"CMBND")
+  #pragma map(inflate_table,"INTABL")
+  #pragma map(inflate_fast,"INFA")
+  #pragma map(inflate_copyright,"INCOPY")
+#endif
+
+#endif /* ZCONF_H */

.venv/lib/python3.9/site-packages/lxml/includes/htmlparser.pxd

@@ -0,0 +1,56 @@
+from libc.string cimport const_char
+
+from lxml.includes.tree cimport xmlDoc
+from lxml.includes.tree cimport xmlInputReadCallback, xmlInputCloseCallback
+from lxml.includes.xmlparser cimport xmlParserCtxt, xmlSAXHandler, xmlSAXHandlerV1
+
+cdef extern from "libxml/HTMLparser.h" nogil:
+    ctypedef enum htmlParserOption:
+        HTML_PARSE_NOERROR    # suppress error reports
+        HTML_PARSE_NOWARNING  # suppress warning reports
+        HTML_PARSE_PEDANTIC   # pedantic error reporting
+        HTML_PARSE_NOBLANKS   # remove blank nodes
+        HTML_PARSE_NONET      # Forbid network access
+        # libxml2 2.6.21+ only:
+        HTML_PARSE_RECOVER    # Relaxed parsing
+        HTML_PARSE_COMPACT    # compact small text nodes
+        # libxml2 2.7.7+ only:
+        HTML_PARSE_NOIMPLIED  # Do not add implied html/body... elements
+        # libxml2 2.7.8+ only:
+        HTML_PARSE_NODEFDTD   # do not default a doctype if not found
+        # libxml2 2.8.0+ only:
+        XML_PARSE_IGNORE_ENC  # ignore internal document encoding hint
+
+    xmlSAXHandlerV1 htmlDefaultSAXHandler
+
+    cdef xmlParserCtxt* htmlCreateMemoryParserCtxt(
+        char* buffer, int size)
+    cdef xmlParserCtxt* htmlCreateFileParserCtxt(
+        char* filename, char* encoding)
+    cdef xmlParserCtxt* htmlCreatePushParserCtxt(xmlSAXHandler* sax,
+                                                 void* user_data,
+                                                 char* chunk, int size,
+                                                 char* filename, int enc)
+    cdef void htmlFreeParserCtxt(xmlParserCtxt* ctxt)
+    cdef void htmlCtxtReset(xmlParserCtxt* ctxt)
+    cdef int htmlCtxtUseOptions(xmlParserCtxt* ctxt, int options)
+    cdef int htmlParseDocument(xmlParserCtxt* ctxt)
+    cdef int htmlParseChunk(xmlParserCtxt* ctxt, 
+                            char* chunk, int size, int terminate)
+
+    cdef xmlDoc* htmlCtxtReadFile(xmlParserCtxt* ctxt,
+                                  char* filename, const_char* encoding,
+                                  int options)
+    cdef xmlDoc* htmlCtxtReadDoc(xmlParserCtxt* ctxt,
+                                 char* buffer, char* URL, const_char* encoding,
+                                 int options)
+    cdef xmlDoc* htmlCtxtReadIO(xmlParserCtxt* ctxt, 
+                                xmlInputReadCallback ioread, 
+                                xmlInputCloseCallback ioclose, 
+                                void* ioctx,
+                                char* URL, const_char* encoding,
+                                int options)
+    cdef xmlDoc* htmlCtxtReadMemory(xmlParserCtxt* ctxt,
+                                    char* buffer, int size,
+                                    char* filename, const_char* encoding,
+                                    int options)

.venv/lib/python3.9/site-packages/lxml/includes/libexslt/exslt.h

@@ -0,0 +1,108 @@
+/*
+ * Summary: main header file
+ *
+ * Copy: See Copyright for the status of this software.
+ */
+
+
+#ifndef __EXSLT_H__
+#define __EXSLT_H__
+
+#include <libxml/tree.h>
+#include <libxml/xpath.h>
+#include "exsltexports.h"
+#include <libexslt/exsltconfig.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+EXSLTPUBVAR const char *exsltLibraryVersion;
+EXSLTPUBVAR const int exsltLibexsltVersion;
+EXSLTPUBVAR const int exsltLibxsltVersion;
+EXSLTPUBVAR const int exsltLibxmlVersion;
+
+/**
+ * EXSLT_COMMON_NAMESPACE:
+ *
+ * Namespace for EXSLT common functions
+ */
+#define EXSLT_COMMON_NAMESPACE ((const xmlChar *) "http://exslt.org/common")
+/**
+ * EXSLT_CRYPTO_NAMESPACE:
+ *
+ * Namespace for EXSLT crypto functions
+ */
+#define EXSLT_CRYPTO_NAMESPACE ((const xmlChar *) "http://exslt.org/crypto")
+/**
+ * EXSLT_MATH_NAMESPACE:
+ *
+ * Namespace for EXSLT math functions
+ */
+#define EXSLT_MATH_NAMESPACE ((const xmlChar *) "http://exslt.org/math")
+/**
+ * EXSLT_SETS_NAMESPACE:
+ *
+ * Namespace for EXSLT set functions
+ */
+#define EXSLT_SETS_NAMESPACE ((const xmlChar *) "http://exslt.org/sets")
+/**
+ * EXSLT_FUNCTIONS_NAMESPACE:
+ *
+ * Namespace for EXSLT functions extension functions
+ */
+#define EXSLT_FUNCTIONS_NAMESPACE ((const xmlChar *) "http://exslt.org/functions")
+/**
+ * EXSLT_STRINGS_NAMESPACE:
+ *
+ * Namespace for EXSLT strings functions
+ */
+#define EXSLT_STRINGS_NAMESPACE ((const xmlChar *) "http://exslt.org/strings")
+/**
+ * EXSLT_DATE_NAMESPACE:
+ *
+ * Namespace for EXSLT date functions
+ */
+#define EXSLT_DATE_NAMESPACE ((const xmlChar *) "http://exslt.org/dates-and-times")
+/**
+ * EXSLT_DYNAMIC_NAMESPACE:
+ *
+ * Namespace for EXSLT dynamic functions
+ */
+#define EXSLT_DYNAMIC_NAMESPACE ((const xmlChar *) "http://exslt.org/dynamic")
+
+/**
+ * SAXON_NAMESPACE:
+ *
+ * Namespace for SAXON extensions functions
+ */
+#define SAXON_NAMESPACE ((const xmlChar *) "http://icl.com/saxon")
+
+EXSLTPUBFUN void EXSLTCALL exsltCommonRegister (void);
+#ifdef EXSLT_CRYPTO_ENABLED
+EXSLTPUBFUN void EXSLTCALL exsltCryptoRegister (void);
+#endif
+EXSLTPUBFUN void EXSLTCALL exsltMathRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltSetsRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltFuncRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltStrRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltDateRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltSaxonRegister (void);
+EXSLTPUBFUN void EXSLTCALL exsltDynRegister(void);
+
+EXSLTPUBFUN void EXSLTCALL exsltRegisterAll (void);
+
+EXSLTPUBFUN int EXSLTCALL exsltDateXpathCtxtRegister (xmlXPathContextPtr ctxt,
+                                                      const xmlChar *prefix);
+EXSLTPUBFUN int EXSLTCALL exsltMathXpathCtxtRegister (xmlXPathContextPtr ctxt,
+                                                      const xmlChar *prefix);
+EXSLTPUBFUN int EXSLTCALL exsltSetsXpathCtxtRegister (xmlXPathContextPtr ctxt,
+                                                      const xmlChar *prefix);
+EXSLTPUBFUN int EXSLTCALL exsltStrXpathCtxtRegister (xmlXPathContextPtr ctxt,
+                                                     const xmlChar *prefix);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __EXSLT_H__ */
+

.venv/lib/python3.9/site-packages/lxml/includes/libexslt/exsltconfig.h

@@ -0,0 +1,70 @@
+/*
+ * exsltconfig.h: compile-time version information for the EXSLT library
+ *
+ * See Copyright for the status of this software.
+ *
+ * daniel@veillard.com
+ */
+
+#ifndef __XML_EXSLTCONFIG_H__
+#define __XML_EXSLTCONFIG_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * LIBEXSLT_DOTTED_VERSION:
+ *
+ * the version string like "1.2.3"
+ */
+#define LIBEXSLT_DOTTED_VERSION "0.8.24"
+
+/**
+ * LIBEXSLT_VERSION:
+ *
+ * the version number: 1.2.3 value is 10203
+ */
+#define LIBEXSLT_VERSION 824
+
+/**
+ * LIBEXSLT_VERSION_STRING:
+ *
+ * the version number string, 1.2.3 value is "10203"
+ */
+#define LIBEXSLT_VERSION_STRING "824"
+
+/**
+ * LIBEXSLT_VERSION_EXTRA:
+ *
+ * extra version information, used to show a Git commit description
+ */
+#define	LIBEXSLT_VERSION_EXTRA ""
+
+/**
+ * WITH_CRYPTO:
+ *
+ * Whether crypto support is configured into exslt
+ */
+#if 0
+#define EXSLT_CRYPTO_ENABLED
+#endif
+
+/**
+ * ATTRIBUTE_UNUSED:
+ *
+ * This macro is used to flag unused function parameters to GCC
+ */
+#ifdef __GNUC__
+#ifndef ATTRIBUTE_UNUSED
+#define ATTRIBUTE_UNUSED __attribute__((unused))
+#endif
+#else
+#define ATTRIBUTE_UNUSED
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_EXSLTCONFIG_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libexslt/exsltexports.h

@@ -0,0 +1,63 @@
+/*
+ * Summary: macros for marking symbols as exportable/importable.
+ *
+ * Copy: See Copyright for the status of this software.
+ */
+
+#ifndef __EXSLT_EXPORTS_H__
+#define __EXSLT_EXPORTS_H__
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+/** DOC_DISABLE */
+
+#ifdef LIBEXSLT_STATIC
+  #define EXSLTPUBLIC
+#elif defined(IN_LIBEXSLT)
+  #define EXSLTPUBLIC __declspec(dllexport)
+#else
+  #define EXSLTPUBLIC __declspec(dllimport)
+#endif
+
+#define EXSLTCALL __cdecl
+
+/** DOC_ENABLE */
+#else /* not Windows */
+
+/**
+ * EXSLTPUBLIC:
+ *
+ * Macro which declares a public symbol
+ */
+#define EXSLTPUBLIC
+
+/**
+ * EXSLTCALL:
+ *
+ * Macro which declares the calling convention for exported functions
+ */
+#define EXSLTCALL
+
+#endif /* platform switch */
+
+/*
+ * EXSLTPUBFUN:
+ *
+ * Macro which declares an exportable function
+ */
+#define EXSLTPUBFUN EXSLTPUBLIC
+
+/**
+ * EXSLTPUBVAR:
+ *
+ * Macro which declares an exportable variable
+ */
+#define EXSLTPUBVAR EXSLTPUBLIC extern
+
+/* Compatibility */
+#if !defined(LIBEXSLT_PUBLIC)
+#define LIBEXSLT_PUBLIC EXSLTPUBVAR
+#endif
+
+#endif /* __EXSLT_EXPORTS_H__ */
+
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/HTMLparser.h

@@ -0,0 +1,339 @@
+/*
+ * Summary: interface for an HTML 4.0 non-verifying parser
+ * Description: this module implements an HTML 4.0 non-verifying parser
+ *              with API compatible with the XML parser ones. It should
+ *              be able to parse "real world" HTML, even if severely
+ *              broken from a specification point of view.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __HTML_PARSER_H__
+#define __HTML_PARSER_H__
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+
+#ifdef LIBXML_HTML_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Backward compatibility
+ */
+#define UTF8ToHtml htmlUTF8ToHtml
+
+/*
+ * Most of the back-end structures from XML and HTML are shared.
+ */
+typedef xmlParserCtxt htmlParserCtxt;
+typedef xmlParserCtxtPtr htmlParserCtxtPtr;
+typedef xmlParserNodeInfo htmlParserNodeInfo;
+typedef xmlSAXHandler htmlSAXHandler;
+typedef xmlSAXHandlerPtr htmlSAXHandlerPtr;
+typedef xmlParserInput htmlParserInput;
+typedef xmlParserInputPtr htmlParserInputPtr;
+typedef xmlDocPtr htmlDocPtr;
+typedef xmlNodePtr htmlNodePtr;
+
+/*
+ * Internal description of an HTML element, representing HTML 4.01
+ * and XHTML 1.0 (which share the same structure).
+ */
+typedef struct _htmlElemDesc htmlElemDesc;
+typedef htmlElemDesc *htmlElemDescPtr;
+struct _htmlElemDesc {
+    const char *name;	/* The tag name */
+    char startTag;      /* unused */
+    char endTag;        /* Whether the end tag can be implied */
+    char saveEndTag;    /* Whether the end tag should be saved */
+    char empty;         /* Is this an empty element ? */
+    char depr;          /* unused */
+    char dtd;           /* unused */
+    char isinline;      /* is this a block 0 or inline 1 element */
+    const char *desc;   /* the description */
+
+    const char** subelts XML_DEPRECATED_MEMBER;
+    const char* defaultsubelt XML_DEPRECATED_MEMBER;
+    const char** attrs_opt XML_DEPRECATED_MEMBER;
+    const char** attrs_depr XML_DEPRECATED_MEMBER;
+    const char** attrs_req XML_DEPRECATED_MEMBER;
+
+    int dataMode;
+};
+
+/*
+ * Internal description of an HTML entity.
+ */
+typedef struct _htmlEntityDesc htmlEntityDesc;
+typedef htmlEntityDesc *htmlEntityDescPtr;
+struct _htmlEntityDesc {
+    unsigned int value;	/* the UNICODE value for the character */
+    const char *name;	/* The entity name */
+    const char *desc;   /* the description */
+};
+
+#ifdef LIBXML_SAX1_ENABLED
+
+XML_DEPRECATED
+XMLPUBVAR const xmlSAXHandlerV1 htmlDefaultSAXHandler;
+
+#endif /* LIBXML_SAX1_ENABLED */
+
+/*
+ * There is only few public functions.
+ */
+XML_DEPRECATED
+XMLPUBFUN void
+			htmlInitAutoClose	(void);
+XMLPUBFUN const htmlElemDesc *
+			htmlTagLookup	(const xmlChar *tag);
+XMLPUBFUN const htmlEntityDesc *
+			htmlEntityLookup(const xmlChar *name);
+XMLPUBFUN const htmlEntityDesc *
+			htmlEntityValueLookup(unsigned int value);
+
+XML_DEPRECATED
+XMLPUBFUN int
+			htmlIsAutoClosed(htmlDocPtr doc,
+					 htmlNodePtr elem);
+XML_DEPRECATED
+XMLPUBFUN int
+			htmlAutoCloseTag(htmlDocPtr doc,
+					 const xmlChar *name,
+					 htmlNodePtr elem);
+XML_DEPRECATED
+XMLPUBFUN const htmlEntityDesc *
+			htmlParseEntityRef(htmlParserCtxtPtr ctxt,
+					 const xmlChar **str);
+XML_DEPRECATED
+XMLPUBFUN int
+			htmlParseCharRef(htmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			htmlParseElement(htmlParserCtxtPtr ctxt);
+
+XMLPUBFUN htmlParserCtxtPtr
+			htmlNewParserCtxt(void);
+XMLPUBFUN htmlParserCtxtPtr
+			htmlNewSAXParserCtxt(const htmlSAXHandler *sax,
+					     void *userData);
+
+XMLPUBFUN htmlParserCtxtPtr
+			htmlCreateMemoryParserCtxt(const char *buffer,
+						   int size);
+
+XMLPUBFUN int
+			htmlParseDocument(htmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN htmlDocPtr
+			htmlSAXParseDoc	(const xmlChar *cur,
+					 const char *encoding,
+					 htmlSAXHandlerPtr sax,
+					 void *userData);
+XMLPUBFUN htmlDocPtr
+			htmlParseDoc	(const xmlChar *cur,
+					 const char *encoding);
+XMLPUBFUN htmlParserCtxtPtr
+			htmlCreateFileParserCtxt(const char *filename,
+	                                         const char *encoding);
+XML_DEPRECATED
+XMLPUBFUN htmlDocPtr
+			htmlSAXParseFile(const char *filename,
+					 const char *encoding,
+					 htmlSAXHandlerPtr sax,
+					 void *userData);
+XMLPUBFUN htmlDocPtr
+			htmlParseFile	(const char *filename,
+					 const char *encoding);
+XMLPUBFUN int
+			htmlUTF8ToHtml	(unsigned char *out,
+					 int *outlen,
+					 const unsigned char *in,
+					 int *inlen);
+XMLPUBFUN int
+			htmlEncodeEntities(unsigned char *out,
+					 int *outlen,
+					 const unsigned char *in,
+					 int *inlen, int quoteChar);
+XMLPUBFUN int
+			htmlIsScriptAttribute(const xmlChar *name);
+XML_DEPRECATED
+XMLPUBFUN int
+			htmlHandleOmittedElem(int val);
+
+#ifdef LIBXML_PUSH_ENABLED
+/**
+ * Interfaces for the Push mode.
+ */
+XMLPUBFUN htmlParserCtxtPtr
+			htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax,
+						 void *user_data,
+						 const char *chunk,
+						 int size,
+						 const char *filename,
+						 xmlCharEncoding enc);
+XMLPUBFUN int
+			htmlParseChunk		(htmlParserCtxtPtr ctxt,
+						 const char *chunk,
+						 int size,
+						 int terminate);
+#endif /* LIBXML_PUSH_ENABLED */
+
+XMLPUBFUN void
+			htmlFreeParserCtxt	(htmlParserCtxtPtr ctxt);
+
+/*
+ * New set of simpler/more flexible APIs
+ */
+/**
+ * xmlParserOption:
+ *
+ * This is the set of XML parser options that can be passed down
+ * to the xmlReadDoc() and similar calls.
+ */
+typedef enum {
+    HTML_PARSE_RECOVER  = 1<<0, /* No effect */
+    HTML_PARSE_NODEFDTD = 1<<2, /* do not default a doctype if not found */
+    HTML_PARSE_NOERROR	= 1<<5,	/* suppress error reports */
+    HTML_PARSE_NOWARNING= 1<<6,	/* suppress warning reports */
+    HTML_PARSE_PEDANTIC	= 1<<7,	/* No effect */
+    HTML_PARSE_NOBLANKS	= 1<<8,	/* remove blank nodes */
+    HTML_PARSE_NONET	= 1<<11,/* No effect */
+    HTML_PARSE_NOIMPLIED= 1<<13,/* Do not add implied html/body... elements */
+    HTML_PARSE_COMPACT  = 1<<16,/* compact small text nodes */
+    HTML_PARSE_HUGE     = 1<<19,/* relax any hardcoded limit from the parser */
+    HTML_PARSE_IGNORE_ENC=1<<21,/* ignore internal document encoding hint */
+    HTML_PARSE_BIG_LINES= 1<<22,/* Store big lines numbers in text PSVI field */
+    HTML_PARSE_HTML5    = 1<<26 /* HTML5 support */
+} htmlParserOption;
+
+XMLPUBFUN void
+		htmlCtxtReset		(htmlParserCtxtPtr ctxt);
+XMLPUBFUN int
+		htmlCtxtSetOptions	(htmlParserCtxtPtr ctxt,
+					 int options);
+XMLPUBFUN int
+		htmlCtxtUseOptions	(htmlParserCtxtPtr ctxt,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlReadDoc		(const xmlChar *cur,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlReadFile		(const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlReadMemory		(const char *buffer,
+					 int size,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlReadFd		(int fd,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlReadIO		(xmlInputReadCallback ioread,
+					 xmlInputCloseCallback ioclose,
+					 void *ioctx,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtParseDocument	(htmlParserCtxtPtr ctxt,
+					 xmlParserInputPtr input);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtReadDoc		(xmlParserCtxtPtr ctxt,
+					 const xmlChar *cur,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtReadFile		(xmlParserCtxtPtr ctxt,
+					 const char *filename,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtReadMemory		(xmlParserCtxtPtr ctxt,
+					 const char *buffer,
+					 int size,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtReadFd		(xmlParserCtxtPtr ctxt,
+					 int fd,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN htmlDocPtr
+		htmlCtxtReadIO		(xmlParserCtxtPtr ctxt,
+					 xmlInputReadCallback ioread,
+					 xmlInputCloseCallback ioclose,
+					 void *ioctx,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+
+/* deprecated content model
+ */
+typedef enum {
+  HTML_NA = 0 ,		/* something we don't check at all */
+  HTML_INVALID = 0x1 ,
+  HTML_DEPRECATED = 0x2 ,
+  HTML_VALID = 0x4 ,
+  HTML_REQUIRED = 0xc /* VALID bit set so ( & HTML_VALID ) is TRUE */
+} htmlStatus ;
+
+/* Using htmlElemDesc rather than name here, to emphasise the fact
+   that otherwise there's a lookup overhead
+*/
+XML_DEPRECATED
+XMLPUBFUN htmlStatus htmlAttrAllowed(const htmlElemDesc*, const xmlChar*, int) ;
+XML_DEPRECATED
+XMLPUBFUN int htmlElementAllowedHere(const htmlElemDesc*, const xmlChar*) ;
+XML_DEPRECATED
+XMLPUBFUN htmlStatus htmlElementStatusHere(const htmlElemDesc*, const htmlElemDesc*) ;
+XML_DEPRECATED
+XMLPUBFUN htmlStatus htmlNodeStatus(htmlNodePtr, int) ;
+/**
+ * htmlDefaultSubelement:
+ * @elt: HTML element
+ *
+ * Returns the default subelement for this element
+ */
+#define htmlDefaultSubelement(elt) elt->defaultsubelt
+/**
+ * htmlElementAllowedHereDesc:
+ * @parent: HTML parent element
+ * @elt: HTML element
+ *
+ * Checks whether an HTML element description may be a
+ * direct child of the specified element.
+ *
+ * Returns 1 if allowed; 0 otherwise.
+ */
+#define htmlElementAllowedHereDesc(parent,elt) \
+	htmlElementAllowedHere((parent), (elt)->name)
+/**
+ * htmlRequiredAttrs:
+ * @elt: HTML element
+ *
+ * Returns the attributes required for the specified element.
+ */
+#define htmlRequiredAttrs(elt) (elt)->attrs_req
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_HTML_ENABLED */
+#endif /* __HTML_PARSER_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/HTMLtree.h

@@ -0,0 +1,148 @@
+/*
+ * Summary: specific APIs to process HTML tree, especially serialization
+ * Description: this module implements a few function needed to process
+ *              tree in an HTML specific way.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __HTML_TREE_H__
+#define __HTML_TREE_H__
+
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+#include <libxml/HTMLparser.h>
+
+#ifdef LIBXML_HTML_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * HTML_TEXT_NODE:
+ *
+ * Macro. A text node in a HTML document is really implemented
+ * the same way as a text node in an XML document.
+ */
+#define HTML_TEXT_NODE		XML_TEXT_NODE
+/**
+ * HTML_ENTITY_REF_NODE:
+ *
+ * Macro. An entity reference in a HTML document is really implemented
+ * the same way as an entity reference in an XML document.
+ */
+#define HTML_ENTITY_REF_NODE	XML_ENTITY_REF_NODE
+/**
+ * HTML_COMMENT_NODE:
+ *
+ * Macro. A comment in a HTML document is really implemented
+ * the same way as a comment in an XML document.
+ */
+#define HTML_COMMENT_NODE	XML_COMMENT_NODE
+/**
+ * HTML_PRESERVE_NODE:
+ *
+ * Macro. A preserved node in a HTML document is really implemented
+ * the same way as a CDATA section in an XML document.
+ */
+#define HTML_PRESERVE_NODE	XML_CDATA_SECTION_NODE
+/**
+ * HTML_PI_NODE:
+ *
+ * Macro. A processing instruction in a HTML document is really implemented
+ * the same way as a processing instruction in an XML document.
+ */
+#define HTML_PI_NODE		XML_PI_NODE
+
+XMLPUBFUN htmlDocPtr
+		htmlNewDoc		(const xmlChar *URI,
+					 const xmlChar *ExternalID);
+XMLPUBFUN htmlDocPtr
+		htmlNewDocNoDtD		(const xmlChar *URI,
+					 const xmlChar *ExternalID);
+XMLPUBFUN const xmlChar *
+		htmlGetMetaEncoding	(htmlDocPtr doc);
+XMLPUBFUN int
+		htmlSetMetaEncoding	(htmlDocPtr doc,
+					 const xmlChar *encoding);
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN void
+		htmlDocDumpMemory	(xmlDocPtr cur,
+					 xmlChar **mem,
+					 int *size);
+XMLPUBFUN void
+		htmlDocDumpMemoryFormat	(xmlDocPtr cur,
+					 xmlChar **mem,
+					 int *size,
+					 int format);
+XMLPUBFUN int
+		htmlDocDump		(FILE *f,
+					 xmlDocPtr cur);
+XMLPUBFUN int
+		htmlSaveFile		(const char *filename,
+					 xmlDocPtr cur);
+XMLPUBFUN int
+		htmlNodeDump		(xmlBufferPtr buf,
+					 xmlDocPtr doc,
+					 xmlNodePtr cur);
+XMLPUBFUN void
+		htmlNodeDumpFile	(FILE *out,
+					 xmlDocPtr doc,
+					 xmlNodePtr cur);
+XMLPUBFUN int
+		htmlNodeDumpFileFormat	(FILE *out,
+					 xmlDocPtr doc,
+					 xmlNodePtr cur,
+					 const char *encoding,
+					 int format);
+XMLPUBFUN int
+		htmlSaveFileEnc		(const char *filename,
+					 xmlDocPtr cur,
+					 const char *encoding);
+XMLPUBFUN int
+		htmlSaveFileFormat	(const char *filename,
+					 xmlDocPtr cur,
+					 const char *encoding,
+					 int format);
+
+XMLPUBFUN void
+		htmlNodeDumpFormatOutput(xmlOutputBufferPtr buf,
+					 xmlDocPtr doc,
+					 xmlNodePtr cur,
+					 const char *encoding,
+					 int format);
+XMLPUBFUN void
+		htmlDocContentDumpOutput(xmlOutputBufferPtr buf,
+					 xmlDocPtr cur,
+					 const char *encoding);
+XMLPUBFUN void
+		htmlDocContentDumpFormatOutput(xmlOutputBufferPtr buf,
+					 xmlDocPtr cur,
+					 const char *encoding,
+					 int format);
+XMLPUBFUN void
+		htmlNodeDumpOutput	(xmlOutputBufferPtr buf,
+					 xmlDocPtr doc,
+					 xmlNodePtr cur,
+					 const char *encoding);
+
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+XML_DEPRECATED
+XMLPUBFUN int
+		htmlIsBooleanAttr	(const xmlChar *name);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_HTML_ENABLED */
+
+#endif /* __HTML_TREE_H__ */
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/SAX.h

@@ -0,0 +1,18 @@
+/*
+ * Summary: Old SAX version 1 handler, deprecated
+ * Description: DEPRECATED set of SAX version 1 interfaces used to
+ *              build the DOM tree.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_SAX_H__
+#define __XML_SAX_H__
+
+#ifdef __GNUC__
+  #warning "libxml/SAX.h is deprecated"
+#endif
+
+#endif /* __XML_SAX_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/SAX2.h

@@ -0,0 +1,170 @@
+/*
+ * Summary: SAX2 parser interface used to build the DOM tree
+ * Description: those are the default SAX2 interfaces used by
+ *              the library when building DOM tree.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_SAX2_H__
+#define __XML_SAX2_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+XMLPUBFUN const xmlChar *
+		xmlSAX2GetPublicId		(void *ctx);
+XMLPUBFUN const xmlChar *
+		xmlSAX2GetSystemId		(void *ctx);
+XMLPUBFUN void
+		xmlSAX2SetDocumentLocator	(void *ctx,
+						 xmlSAXLocatorPtr loc);
+
+XMLPUBFUN int
+		xmlSAX2GetLineNumber		(void *ctx);
+XMLPUBFUN int
+		xmlSAX2GetColumnNumber		(void *ctx);
+
+XMLPUBFUN int
+		xmlSAX2IsStandalone		(void *ctx);
+XMLPUBFUN int
+		xmlSAX2HasInternalSubset	(void *ctx);
+XMLPUBFUN int
+		xmlSAX2HasExternalSubset	(void *ctx);
+
+XMLPUBFUN void
+		xmlSAX2InternalSubset		(void *ctx,
+						 const xmlChar *name,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID);
+XMLPUBFUN void
+		xmlSAX2ExternalSubset		(void *ctx,
+						 const xmlChar *name,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID);
+XMLPUBFUN xmlEntityPtr
+		xmlSAX2GetEntity		(void *ctx,
+						 const xmlChar *name);
+XMLPUBFUN xmlEntityPtr
+		xmlSAX2GetParameterEntity	(void *ctx,
+						 const xmlChar *name);
+XMLPUBFUN xmlParserInputPtr
+		xmlSAX2ResolveEntity		(void *ctx,
+						 const xmlChar *publicId,
+						 const xmlChar *systemId);
+
+XMLPUBFUN void
+		xmlSAX2EntityDecl		(void *ctx,
+						 const xmlChar *name,
+						 int type,
+						 const xmlChar *publicId,
+						 const xmlChar *systemId,
+						 xmlChar *content);
+XMLPUBFUN void
+		xmlSAX2AttributeDecl		(void *ctx,
+						 const xmlChar *elem,
+						 const xmlChar *fullname,
+						 int type,
+						 int def,
+						 const xmlChar *defaultValue,
+						 xmlEnumerationPtr tree);
+XMLPUBFUN void
+		xmlSAX2ElementDecl		(void *ctx,
+						 const xmlChar *name,
+						 int type,
+						 xmlElementContentPtr content);
+XMLPUBFUN void
+		xmlSAX2NotationDecl		(void *ctx,
+						 const xmlChar *name,
+						 const xmlChar *publicId,
+						 const xmlChar *systemId);
+XMLPUBFUN void
+		xmlSAX2UnparsedEntityDecl	(void *ctx,
+						 const xmlChar *name,
+						 const xmlChar *publicId,
+						 const xmlChar *systemId,
+						 const xmlChar *notationName);
+
+XMLPUBFUN void
+		xmlSAX2StartDocument		(void *ctx);
+XMLPUBFUN void
+		xmlSAX2EndDocument		(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlSAX2StartElement		(void *ctx,
+						 const xmlChar *fullname,
+						 const xmlChar **atts);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlSAX2EndElement		(void *ctx,
+						 const xmlChar *name);
+XMLPUBFUN void
+		xmlSAX2StartElementNs		(void *ctx,
+						 const xmlChar *localname,
+						 const xmlChar *prefix,
+						 const xmlChar *URI,
+						 int nb_namespaces,
+						 const xmlChar **namespaces,
+						 int nb_attributes,
+						 int nb_defaulted,
+						 const xmlChar **attributes);
+XMLPUBFUN void
+		xmlSAX2EndElementNs		(void *ctx,
+						 const xmlChar *localname,
+						 const xmlChar *prefix,
+						 const xmlChar *URI);
+XMLPUBFUN void
+		xmlSAX2Reference		(void *ctx,
+						 const xmlChar *name);
+XMLPUBFUN void
+		xmlSAX2Characters		(void *ctx,
+						 const xmlChar *ch,
+						 int len);
+XMLPUBFUN void
+		xmlSAX2IgnorableWhitespace	(void *ctx,
+						 const xmlChar *ch,
+						 int len);
+XMLPUBFUN void
+		xmlSAX2ProcessingInstruction	(void *ctx,
+						 const xmlChar *target,
+						 const xmlChar *data);
+XMLPUBFUN void
+		xmlSAX2Comment			(void *ctx,
+						 const xmlChar *value);
+XMLPUBFUN void
+		xmlSAX2CDataBlock		(void *ctx,
+						 const xmlChar *value,
+						 int len);
+
+#ifdef LIBXML_SAX1_ENABLED
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlSAXDefaultVersion		(int version);
+#endif /* LIBXML_SAX1_ENABLED */
+
+XMLPUBFUN int
+		xmlSAXVersion			(xmlSAXHandler *hdlr,
+						 int version);
+XMLPUBFUN void
+		xmlSAX2InitDefaultSAXHandler    (xmlSAXHandler *hdlr,
+						 int warning);
+#ifdef LIBXML_HTML_ENABLED
+XMLPUBFUN void
+		xmlSAX2InitHtmlDefaultSAXHandler(xmlSAXHandler *hdlr);
+XML_DEPRECATED
+XMLPUBFUN void
+		htmlDefaultSAXHandlerInit	(void);
+#endif
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDefaultSAXHandlerInit	(void);
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_SAX2_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/c14n.h

@@ -0,0 +1,115 @@
+/*
+ * Summary: Provide Canonical XML and Exclusive XML Canonicalization
+ * Description: the c14n modules provides a
+ *
+ * "Canonical XML" implementation
+ * http://www.w3.org/TR/xml-c14n
+ *
+ * and an
+ *
+ * "Exclusive XML Canonicalization" implementation
+ * http://www.w3.org/TR/xml-exc-c14n
+
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Aleksey Sanin <aleksey@aleksey.com>
+ */
+#ifndef __XML_C14N_H__
+#define __XML_C14N_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_C14N_ENABLED
+
+#include <libxml/tree.h>
+#include <libxml/xpath.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*
+ * XML Canonicalization
+ * http://www.w3.org/TR/xml-c14n
+ *
+ * Exclusive XML Canonicalization
+ * http://www.w3.org/TR/xml-exc-c14n
+ *
+ * Canonical form of an XML document could be created if and only if
+ *  a) default attributes (if any) are added to all nodes
+ *  b) all character and parsed entity references are resolved
+ * In order to achieve this in libxml2 the document MUST be loaded with
+ * following options: XML_PARSE_DTDATTR | XML_PARSE_NOENT
+ */
+
+/*
+ * xmlC14NMode:
+ *
+ * Predefined values for C14N modes
+ *
+ */
+typedef enum {
+    XML_C14N_1_0            = 0,    /* Original C14N 1.0 spec */
+    XML_C14N_EXCLUSIVE_1_0  = 1,    /* Exclusive C14N 1.0 spec */
+    XML_C14N_1_1            = 2     /* C14N 1.1 spec */
+} xmlC14NMode;
+
+XMLPUBFUN int
+		xmlC14NDocSaveTo	(xmlDocPtr doc,
+					 xmlNodeSetPtr nodes,
+					 int mode, /* a xmlC14NMode */
+					 xmlChar **inclusive_ns_prefixes,
+					 int with_comments,
+					 xmlOutputBufferPtr buf);
+
+XMLPUBFUN int
+		xmlC14NDocDumpMemory	(xmlDocPtr doc,
+					 xmlNodeSetPtr nodes,
+					 int mode, /* a xmlC14NMode */
+					 xmlChar **inclusive_ns_prefixes,
+					 int with_comments,
+					 xmlChar **doc_txt_ptr);
+
+XMLPUBFUN int
+		xmlC14NDocSave		(xmlDocPtr doc,
+					 xmlNodeSetPtr nodes,
+					 int mode, /* a xmlC14NMode */
+					 xmlChar **inclusive_ns_prefixes,
+					 int with_comments,
+					 const char* filename,
+					 int compression);
+
+
+/**
+ * This is the core C14N function
+ */
+/**
+ * xmlC14NIsVisibleCallback:
+ * @user_data: user data
+ * @node: the current node
+ * @parent: the parent node
+ *
+ * Signature for a C14N callback on visible nodes
+ *
+ * Returns 1 if the node should be included
+ */
+typedef int (*xmlC14NIsVisibleCallback)	(void* user_data,
+					 xmlNodePtr node,
+					 xmlNodePtr parent);
+
+XMLPUBFUN int
+		xmlC14NExecute		(xmlDocPtr doc,
+					 xmlC14NIsVisibleCallback is_visible_callback,
+					 void* user_data,
+					 int mode, /* a xmlC14NMode */
+					 xmlChar **inclusive_ns_prefixes,
+					 int with_comments,
+					 xmlOutputBufferPtr buf);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBXML_C14N_ENABLED */
+#endif /* __XML_C14N_H__ */
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/catalog.h

@@ -0,0 +1,183 @@
+/**
+ * Summary: interfaces to the Catalog handling system
+ * Description: the catalog module implements the support for
+ * XML Catalogs and SGML catalogs
+ *
+ * SGML Open Technical Resolution TR9401:1997.
+ * http://www.jclark.com/sp/catalog.htm
+ *
+ * XML Catalogs Working Draft 06 August 2001
+ * http://www.oasis-open.org/committees/entity/spec-2001-08-06.html
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_CATALOG_H__
+#define __XML_CATALOG_H__
+
+#include <stdio.h>
+
+#include <libxml/xmlversion.h>
+#include <libxml/xmlstring.h>
+#include <libxml/tree.h>
+
+#ifdef LIBXML_CATALOG_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * XML_CATALOGS_NAMESPACE:
+ *
+ * The namespace for the XML Catalogs elements.
+ */
+#define XML_CATALOGS_NAMESPACE					\
+    (const xmlChar *) "urn:oasis:names:tc:entity:xmlns:xml:catalog"
+/**
+ * XML_CATALOG_PI:
+ *
+ * The specific XML Catalog Processing Instruction name.
+ */
+#define XML_CATALOG_PI						\
+    (const xmlChar *) "oasis-xml-catalog"
+
+/*
+ * The API is voluntarily limited to general cataloging.
+ */
+typedef enum {
+    XML_CATA_PREFER_NONE = 0,
+    XML_CATA_PREFER_PUBLIC = 1,
+    XML_CATA_PREFER_SYSTEM
+} xmlCatalogPrefer;
+
+typedef enum {
+    XML_CATA_ALLOW_NONE = 0,
+    XML_CATA_ALLOW_GLOBAL = 1,
+    XML_CATA_ALLOW_DOCUMENT = 2,
+    XML_CATA_ALLOW_ALL = 3
+} xmlCatalogAllow;
+
+typedef struct _xmlCatalog xmlCatalog;
+typedef xmlCatalog *xmlCatalogPtr;
+
+/*
+ * Operations on a given catalog.
+ */
+XMLPUBFUN xmlCatalogPtr
+		xmlNewCatalog		(int sgml);
+XMLPUBFUN xmlCatalogPtr
+		xmlLoadACatalog		(const char *filename);
+XMLPUBFUN xmlCatalogPtr
+		xmlLoadSGMLSuperCatalog	(const char *filename);
+XMLPUBFUN int
+		xmlConvertSGMLCatalog	(xmlCatalogPtr catal);
+XMLPUBFUN int
+		xmlACatalogAdd		(xmlCatalogPtr catal,
+					 const xmlChar *type,
+					 const xmlChar *orig,
+					 const xmlChar *replace);
+XMLPUBFUN int
+		xmlACatalogRemove	(xmlCatalogPtr catal,
+					 const xmlChar *value);
+XMLPUBFUN xmlChar *
+		xmlACatalogResolve	(xmlCatalogPtr catal,
+					 const xmlChar *pubID,
+	                                 const xmlChar *sysID);
+XMLPUBFUN xmlChar *
+		xmlACatalogResolveSystem(xmlCatalogPtr catal,
+					 const xmlChar *sysID);
+XMLPUBFUN xmlChar *
+		xmlACatalogResolvePublic(xmlCatalogPtr catal,
+					 const xmlChar *pubID);
+XMLPUBFUN xmlChar *
+		xmlACatalogResolveURI	(xmlCatalogPtr catal,
+					 const xmlChar *URI);
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN void
+		xmlACatalogDump		(xmlCatalogPtr catal,
+					 FILE *out);
+#endif /* LIBXML_OUTPUT_ENABLED */
+XMLPUBFUN void
+		xmlFreeCatalog		(xmlCatalogPtr catal);
+XMLPUBFUN int
+		xmlCatalogIsEmpty	(xmlCatalogPtr catal);
+
+/*
+ * Global operations.
+ */
+XMLPUBFUN void
+		xmlInitializeCatalog	(void);
+XMLPUBFUN int
+		xmlLoadCatalog		(const char *filename);
+XMLPUBFUN void
+		xmlLoadCatalogs		(const char *paths);
+XMLPUBFUN void
+		xmlCatalogCleanup	(void);
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN void
+		xmlCatalogDump		(FILE *out);
+#endif /* LIBXML_OUTPUT_ENABLED */
+XMLPUBFUN xmlChar *
+		xmlCatalogResolve	(const xmlChar *pubID,
+	                                 const xmlChar *sysID);
+XMLPUBFUN xmlChar *
+		xmlCatalogResolveSystem	(const xmlChar *sysID);
+XMLPUBFUN xmlChar *
+		xmlCatalogResolvePublic	(const xmlChar *pubID);
+XMLPUBFUN xmlChar *
+		xmlCatalogResolveURI	(const xmlChar *URI);
+XMLPUBFUN int
+		xmlCatalogAdd		(const xmlChar *type,
+					 const xmlChar *orig,
+					 const xmlChar *replace);
+XMLPUBFUN int
+		xmlCatalogRemove	(const xmlChar *value);
+XMLPUBFUN xmlDocPtr
+		xmlParseCatalogFile	(const char *filename);
+XMLPUBFUN int
+		xmlCatalogConvert	(void);
+
+/*
+ * Strictly minimal interfaces for per-document catalogs used
+ * by the parser.
+ */
+XMLPUBFUN void
+		xmlCatalogFreeLocal	(void *catalogs);
+XMLPUBFUN void *
+		xmlCatalogAddLocal	(void *catalogs,
+					 const xmlChar *URL);
+XMLPUBFUN xmlChar *
+		xmlCatalogLocalResolve	(void *catalogs,
+					 const xmlChar *pubID,
+	                                 const xmlChar *sysID);
+XMLPUBFUN xmlChar *
+		xmlCatalogLocalResolveURI(void *catalogs,
+					 const xmlChar *URI);
+/*
+ * Preference settings.
+ */
+XMLPUBFUN int
+		xmlCatalogSetDebug	(int level);
+XML_DEPRECATED
+XMLPUBFUN xmlCatalogPrefer
+		xmlCatalogSetDefaultPrefer(xmlCatalogPrefer prefer);
+XMLPUBFUN void
+		xmlCatalogSetDefaults	(xmlCatalogAllow allow);
+XMLPUBFUN xmlCatalogAllow
+		xmlCatalogGetDefaults	(void);
+
+
+/* DEPRECATED interfaces */
+XMLPUBFUN const xmlChar *
+		xmlCatalogGetSystem	(const xmlChar *sysID);
+XMLPUBFUN const xmlChar *
+		xmlCatalogGetPublic	(const xmlChar *pubID);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* LIBXML_CATALOG_ENABLED */
+#endif /* __XML_CATALOG_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/chvalid.h

@@ -0,0 +1,230 @@
+/*
+ * Summary: Unicode character range checking
+ * Description: this module exports interfaces for the character
+ *               range validation APIs
+ *
+ * This file is automatically generated from the cvs source
+ * definition files using the genChRanges.py Python script
+ *
+ * Generation date: Mon Mar 27 11:09:48 2006
+ * Sources: chvalid.def
+ * Author: William Brack <wbrack@mmm.com.hk>
+ */
+
+#ifndef __XML_CHVALID_H__
+#define __XML_CHVALID_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Define our typedefs and structures
+ *
+ */
+typedef struct _xmlChSRange xmlChSRange;
+typedef xmlChSRange *xmlChSRangePtr;
+struct _xmlChSRange {
+    unsigned short	low;
+    unsigned short	high;
+};
+
+typedef struct _xmlChLRange xmlChLRange;
+typedef xmlChLRange *xmlChLRangePtr;
+struct _xmlChLRange {
+    unsigned int	low;
+    unsigned int	high;
+};
+
+typedef struct _xmlChRangeGroup xmlChRangeGroup;
+typedef xmlChRangeGroup *xmlChRangeGroupPtr;
+struct _xmlChRangeGroup {
+    int			nbShortRange;
+    int			nbLongRange;
+    const xmlChSRange	*shortRange;	/* points to an array of ranges */
+    const xmlChLRange	*longRange;
+};
+
+/**
+ * Range checking routine
+ */
+XMLPUBFUN int
+		xmlCharInRange(unsigned int val, const xmlChRangeGroup *group);
+
+
+/**
+ * xmlIsBaseChar_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsBaseChar_ch(c)	(((0x41 <= (c)) && ((c) <= 0x5a)) || \
+				 ((0x61 <= (c)) && ((c) <= 0x7a)) || \
+				 ((0xc0 <= (c)) && ((c) <= 0xd6)) || \
+				 ((0xd8 <= (c)) && ((c) <= 0xf6)) || \
+				  (0xf8 <= (c)))
+
+/**
+ * xmlIsBaseCharQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsBaseCharQ(c)	(((c) < 0x100) ? \
+				 xmlIsBaseChar_ch((c)) : \
+				 xmlCharInRange((c), &xmlIsBaseCharGroup))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsBaseCharGroup;
+
+/**
+ * xmlIsBlank_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsBlank_ch(c)	(((c) == 0x20) || \
+				 ((0x9 <= (c)) && ((c) <= 0xa)) || \
+				 ((c) == 0xd))
+
+/**
+ * xmlIsBlankQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsBlankQ(c)		(((c) < 0x100) ? \
+				 xmlIsBlank_ch((c)) : 0)
+
+
+/**
+ * xmlIsChar_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsChar_ch(c)		(((0x9 <= (c)) && ((c) <= 0xa)) || \
+				 ((c) == 0xd) || \
+				  (0x20 <= (c)))
+
+/**
+ * xmlIsCharQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsCharQ(c)		(((c) < 0x100) ? \
+				 xmlIsChar_ch((c)) :\
+				(((0x100 <= (c)) && ((c) <= 0xd7ff)) || \
+				 ((0xe000 <= (c)) && ((c) <= 0xfffd)) || \
+				 ((0x10000 <= (c)) && ((c) <= 0x10ffff))))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsCharGroup;
+
+/**
+ * xmlIsCombiningQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsCombiningQ(c)	(((c) < 0x100) ? \
+				 0 : \
+				 xmlCharInRange((c), &xmlIsCombiningGroup))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsCombiningGroup;
+
+/**
+ * xmlIsDigit_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsDigit_ch(c)	(((0x30 <= (c)) && ((c) <= 0x39)))
+
+/**
+ * xmlIsDigitQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsDigitQ(c)		(((c) < 0x100) ? \
+				 xmlIsDigit_ch((c)) : \
+				 xmlCharInRange((c), &xmlIsDigitGroup))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsDigitGroup;
+
+/**
+ * xmlIsExtender_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsExtender_ch(c)	(((c) == 0xb7))
+
+/**
+ * xmlIsExtenderQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsExtenderQ(c)	(((c) < 0x100) ? \
+				 xmlIsExtender_ch((c)) : \
+				 xmlCharInRange((c), &xmlIsExtenderGroup))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsExtenderGroup;
+
+/**
+ * xmlIsIdeographicQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsIdeographicQ(c)	(((c) < 0x100) ? \
+				 0 :\
+				(((0x4e00 <= (c)) && ((c) <= 0x9fa5)) || \
+				 ((c) == 0x3007) || \
+				 ((0x3021 <= (c)) && ((c) <= 0x3029))))
+
+XMLPUBVAR const xmlChRangeGroup xmlIsIdeographicGroup;
+XMLPUBVAR const unsigned char xmlIsPubidChar_tab[256];
+
+/**
+ * xmlIsPubidChar_ch:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsPubidChar_ch(c)	(xmlIsPubidChar_tab[(c)])
+
+/**
+ * xmlIsPubidCharQ:
+ * @c: char to validate
+ *
+ * Automatically generated by genChRanges.py
+ */
+#define xmlIsPubidCharQ(c)	(((c) < 0x100) ? \
+				 xmlIsPubidChar_ch((c)) : 0)
+
+XMLPUBFUN int
+		xmlIsBaseChar(unsigned int ch);
+XMLPUBFUN int
+		xmlIsBlank(unsigned int ch);
+XMLPUBFUN int
+		xmlIsChar(unsigned int ch);
+XMLPUBFUN int
+		xmlIsCombining(unsigned int ch);
+XMLPUBFUN int
+		xmlIsDigit(unsigned int ch);
+XMLPUBFUN int
+		xmlIsExtender(unsigned int ch);
+XMLPUBFUN int
+		xmlIsIdeographic(unsigned int ch);
+XMLPUBFUN int
+		xmlIsPubidChar(unsigned int ch);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_CHVALID_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/debugXML.h

@@ -0,0 +1,79 @@
+/*
+ * Summary: Tree debugging APIs
+ * Description: Interfaces to a set of routines used for debugging the tree
+ *              produced by the XML parser.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __DEBUG_XML__
+#define __DEBUG_XML__
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+
+#ifdef LIBXML_DEBUG_ENABLED
+
+#include <libxml/xpath.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The standard Dump routines.
+ */
+XMLPUBFUN void
+	xmlDebugDumpString	(FILE *output,
+				 const xmlChar *str);
+XMLPUBFUN void
+	xmlDebugDumpAttr	(FILE *output,
+				 xmlAttrPtr attr,
+				 int depth);
+XMLPUBFUN void
+	xmlDebugDumpAttrList	(FILE *output,
+				 xmlAttrPtr attr,
+				 int depth);
+XMLPUBFUN void
+	xmlDebugDumpOneNode	(FILE *output,
+				 xmlNodePtr node,
+				 int depth);
+XMLPUBFUN void
+	xmlDebugDumpNode	(FILE *output,
+				 xmlNodePtr node,
+				 int depth);
+XMLPUBFUN void
+	xmlDebugDumpNodeList	(FILE *output,
+				 xmlNodePtr node,
+				 int depth);
+XMLPUBFUN void
+	xmlDebugDumpDocumentHead(FILE *output,
+				 xmlDocPtr doc);
+XMLPUBFUN void
+	xmlDebugDumpDocument	(FILE *output,
+				 xmlDocPtr doc);
+XMLPUBFUN void
+	xmlDebugDumpDTD		(FILE *output,
+				 xmlDtdPtr dtd);
+XMLPUBFUN void
+	xmlDebugDumpEntities	(FILE *output,
+				 xmlDocPtr doc);
+
+/****************************************************************
+ *								*
+ *			Checking routines			*
+ *								*
+ ****************************************************************/
+
+XMLPUBFUN int
+	xmlDebugCheckDocument	(FILE * output,
+				 xmlDocPtr doc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_DEBUG_ENABLED */
+#endif /* __DEBUG_XML__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/dict.h

@@ -0,0 +1,82 @@
+/*
+ * Summary: string dictionary
+ * Description: dictionary of reusable strings, just used to avoid allocation
+ *         and freeing operations.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_DICT_H__
+#define __XML_DICT_H__
+
+#include <stddef.h>
+#include <libxml/xmlversion.h>
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The dictionary.
+ */
+typedef struct _xmlDict xmlDict;
+typedef xmlDict *xmlDictPtr;
+
+/*
+ * Initializer
+ */
+XML_DEPRECATED
+XMLPUBFUN int  xmlInitializeDict(void);
+
+/*
+ * Constructor and destructor.
+ */
+XMLPUBFUN xmlDictPtr
+			xmlDictCreate	(void);
+XMLPUBFUN size_t
+			xmlDictSetLimit	(xmlDictPtr dict,
+                                         size_t limit);
+XMLPUBFUN size_t
+			xmlDictGetUsage (xmlDictPtr dict);
+XMLPUBFUN xmlDictPtr
+			xmlDictCreateSub(xmlDictPtr sub);
+XMLPUBFUN int
+			xmlDictReference(xmlDictPtr dict);
+XMLPUBFUN void
+			xmlDictFree	(xmlDictPtr dict);
+
+/*
+ * Lookup of entry in the dictionary.
+ */
+XMLPUBFUN const xmlChar *
+			xmlDictLookup	(xmlDictPtr dict,
+		                         const xmlChar *name,
+		                         int len);
+XMLPUBFUN const xmlChar *
+			xmlDictExists	(xmlDictPtr dict,
+		                         const xmlChar *name,
+		                         int len);
+XMLPUBFUN const xmlChar *
+			xmlDictQLookup	(xmlDictPtr dict,
+		                         const xmlChar *prefix,
+		                         const xmlChar *name);
+XMLPUBFUN int
+			xmlDictOwns	(xmlDictPtr dict,
+					 const xmlChar *str);
+XMLPUBFUN int
+			xmlDictSize	(xmlDictPtr dict);
+
+/*
+ * Cleanup function
+ */
+XML_DEPRECATED
+XMLPUBFUN void
+                        xmlDictCleanup  (void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* ! __XML_DICT_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/encoding.h

@@ -0,0 +1,307 @@
+/*
+ * Summary: interface for the encoding conversion functions
+ * Description: interface for the encoding conversion functions needed for
+ *              XML basic encoding and iconv() support.
+ *
+ * Related specs are
+ * rfc2044        (UTF-8 and UTF-16) F. Yergeau Alis Technologies
+ * [ISO-10646]    UTF-8 and UTF-16 in Annexes
+ * [ISO-8859-1]   ISO Latin-1 characters codes.
+ * [UNICODE]      The Unicode Consortium, "The Unicode Standard --
+ *                Worldwide Character Encoding -- Version 1.0", Addison-
+ *                Wesley, Volume 1, 1991, Volume 2, 1992.  UTF-8 is
+ *                described in Unicode Technical Report #4.
+ * [US-ASCII]     Coded Character Set--7-bit American Standard Code for
+ *                Information Interchange, ANSI X3.4-1986.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_CHAR_ENCODING_H__
+#define __XML_CHAR_ENCODING_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/xmlerror.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Backward compatibility
+ */
+#define UTF8Toisolat1 xmlUTF8ToIsolat1
+#define isolat1ToUTF8 xmlIsolat1ToUTF8
+
+typedef enum {
+    XML_ENC_ERR_SUCCESS     =  0,
+    XML_ENC_ERR_INTERNAL    = -1,
+    XML_ENC_ERR_INPUT       = -2,
+    XML_ENC_ERR_SPACE       = -3,
+    XML_ENC_ERR_MEMORY      = -4
+} xmlCharEncError;
+
+/*
+ * xmlCharEncoding:
+ *
+ * Predefined values for some standard encodings.
+ */
+typedef enum {
+    XML_CHAR_ENCODING_ERROR=   -1, /* No char encoding detected */
+    XML_CHAR_ENCODING_NONE=	0, /* No char encoding detected */
+    XML_CHAR_ENCODING_UTF8=	1, /* UTF-8 */
+    XML_CHAR_ENCODING_UTF16LE=	2, /* UTF-16 little endian */
+    XML_CHAR_ENCODING_UTF16BE=	3, /* UTF-16 big endian */
+    XML_CHAR_ENCODING_UCS4LE=	4, /* UCS-4 little endian */
+    XML_CHAR_ENCODING_UCS4BE=	5, /* UCS-4 big endian */
+    XML_CHAR_ENCODING_EBCDIC=	6, /* EBCDIC uh! */
+    XML_CHAR_ENCODING_UCS4_2143=7, /* UCS-4 unusual ordering */
+    XML_CHAR_ENCODING_UCS4_3412=8, /* UCS-4 unusual ordering */
+    XML_CHAR_ENCODING_UCS2=	9, /* UCS-2 */
+    XML_CHAR_ENCODING_8859_1=	10,/* ISO-8859-1 ISO Latin 1 */
+    XML_CHAR_ENCODING_8859_2=	11,/* ISO-8859-2 ISO Latin 2 */
+    XML_CHAR_ENCODING_8859_3=	12,/* ISO-8859-3 */
+    XML_CHAR_ENCODING_8859_4=	13,/* ISO-8859-4 */
+    XML_CHAR_ENCODING_8859_5=	14,/* ISO-8859-5 */
+    XML_CHAR_ENCODING_8859_6=	15,/* ISO-8859-6 */
+    XML_CHAR_ENCODING_8859_7=	16,/* ISO-8859-7 */
+    XML_CHAR_ENCODING_8859_8=	17,/* ISO-8859-8 */
+    XML_CHAR_ENCODING_8859_9=	18,/* ISO-8859-9 */
+    XML_CHAR_ENCODING_2022_JP=  19,/* ISO-2022-JP */
+    XML_CHAR_ENCODING_SHIFT_JIS=20,/* Shift_JIS */
+    XML_CHAR_ENCODING_EUC_JP=   21,/* EUC-JP */
+    XML_CHAR_ENCODING_ASCII=    22,/* pure ASCII */
+    /* Available since 2.14.0 */
+    XML_CHAR_ENCODING_UTF16=	23,/* UTF-16 native */
+    XML_CHAR_ENCODING_HTML=	24,/* HTML (output only) */
+    XML_CHAR_ENCODING_8859_10=	25,/* ISO-8859-10 */
+    XML_CHAR_ENCODING_8859_11=	26,/* ISO-8859-11 */
+    XML_CHAR_ENCODING_8859_13=	27,/* ISO-8859-13 */
+    XML_CHAR_ENCODING_8859_14=	28,/* ISO-8859-14 */
+    XML_CHAR_ENCODING_8859_15=	29,/* ISO-8859-15 */
+    XML_CHAR_ENCODING_8859_16=	30 /* ISO-8859-16 */
+} xmlCharEncoding;
+
+typedef enum {
+    XML_ENC_INPUT = (1 << 0),
+    XML_ENC_OUTPUT = (1 << 1)
+} xmlCharEncFlags;
+
+/**
+ * xmlCharEncodingInputFunc:
+ * @out:  a pointer to an array of bytes to store the UTF-8 result
+ * @outlen:  the length of @out
+ * @in:  a pointer to an array of chars in the original encoding
+ * @inlen:  the length of @in
+ *
+ * Convert characters to UTF-8.
+ *
+ * On success, the value of @inlen after return is the number of
+ * bytes consumed and @outlen is the number of bytes produced.
+ *
+ * Returns the number of bytes written or an XML_ENC_ERR code.
+ */
+typedef int (*xmlCharEncodingInputFunc)(unsigned char *out, int *outlen,
+                                        const unsigned char *in, int *inlen);
+
+
+/**
+ * xmlCharEncodingOutputFunc:
+ * @out:  a pointer to an array of bytes to store the result
+ * @outlen:  the length of @out
+ * @in:  a pointer to an array of UTF-8 chars
+ * @inlen:  the length of @in
+ *
+ * Convert characters from UTF-8.
+ *
+ * On success, the value of @inlen after return is the number of
+ * bytes consumed and @outlen is the number of bytes produced.
+ *
+ * Returns the number of bytes written or an XML_ENC_ERR code.
+ */
+typedef int (*xmlCharEncodingOutputFunc)(unsigned char *out, int *outlen,
+                                         const unsigned char *in, int *inlen);
+
+
+/**
+ * xmlCharEncConvFunc:
+ * @vctxt:  conversion context
+ * @out:  a pointer to an array of bytes to store the result
+ * @outlen:  the length of @out
+ * @in:  a pointer to an array of input bytes
+ * @inlen:  the length of @in
+ * @flush:  end of input
+ *
+ * Convert between character encodings.
+ *
+ * The value of @inlen after return is the number of bytes consumed
+ * and @outlen is the number of bytes produced.
+ *
+ * If the converter can consume partial multi-byte sequences, the
+ * @flush flag can be used to detect truncated sequences at EOF.
+ * Otherwise, the flag can be ignored.
+ *
+ * Returns an XML_ENC_ERR code.
+ */
+typedef xmlCharEncError
+(*xmlCharEncConvFunc)(void *vctxt, unsigned char *out, int *outlen,
+                      const unsigned char *in, int *inlen, int flush);
+
+/**
+ * xmlCharEncConvCtxtDtor:
+ * @vctxt:  conversion context
+ *
+ * Free a conversion context.
+ */
+typedef void
+(*xmlCharEncConvCtxtDtor)(void *vctxt);
+
+/*
+ * Block defining the handlers for non UTF-8 encodings.
+ *
+ * This structure will be made private.
+ */
+typedef struct _xmlCharEncodingHandler xmlCharEncodingHandler;
+typedef xmlCharEncodingHandler *xmlCharEncodingHandlerPtr;
+struct _xmlCharEncodingHandler {
+    char *name XML_DEPRECATED_MEMBER;
+    union {
+        xmlCharEncConvFunc func;
+        xmlCharEncodingInputFunc legacyFunc;
+    } input XML_DEPRECATED_MEMBER;
+    union {
+        xmlCharEncConvFunc func;
+        xmlCharEncodingOutputFunc legacyFunc;
+    } output XML_DEPRECATED_MEMBER;
+    void *inputCtxt XML_DEPRECATED_MEMBER;
+    void *outputCtxt XML_DEPRECATED_MEMBER;
+    xmlCharEncConvCtxtDtor ctxtDtor XML_DEPRECATED_MEMBER;
+    int flags XML_DEPRECATED_MEMBER;
+};
+
+/**
+ * xmlCharEncConvImpl:
+ * @vctxt:  user data
+ * @name:  encoding name
+ * @flags:  bit mask of flags
+ * @out:  pointer to resulting handler
+ *
+ * If this function returns XML_ERR_OK, it must fill the @out
+ * pointer with an encoding handler. The handler can be obtained
+ * from xmlCharEncNewCustomHandler.
+ *
+ * @flags can contain XML_ENC_INPUT, XML_ENC_OUTPUT or both.
+ *
+ * Returns an xmlParserErrors code.
+ */
+typedef xmlParserErrors
+(*xmlCharEncConvImpl)(void *vctxt, const char *name, xmlCharEncFlags flags,
+                      xmlCharEncodingHandler **out);
+
+/*
+ * Interfaces for encoding handlers.
+ */
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlInitCharEncodingHandlers	(void);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlCleanupCharEncodingHandlers	(void);
+XMLPUBFUN void
+	xmlRegisterCharEncodingHandler	(xmlCharEncodingHandlerPtr handler);
+XMLPUBFUN xmlParserErrors
+	xmlLookupCharEncodingHandler	(xmlCharEncoding enc,
+					 xmlCharEncodingHandlerPtr *out);
+XMLPUBFUN xmlParserErrors
+	xmlOpenCharEncodingHandler	(const char *name,
+					 int output,
+					 xmlCharEncodingHandlerPtr *out);
+XMLPUBFUN xmlParserErrors
+	xmlCreateCharEncodingHandler	(const char *name,
+					 xmlCharEncFlags flags,
+					 xmlCharEncConvImpl impl,
+					 void *implCtxt,
+					 xmlCharEncodingHandlerPtr *out);
+XMLPUBFUN xmlCharEncodingHandlerPtr
+	xmlGetCharEncodingHandler	(xmlCharEncoding enc);
+XMLPUBFUN xmlCharEncodingHandlerPtr
+	xmlFindCharEncodingHandler	(const char *name);
+XMLPUBFUN xmlCharEncodingHandlerPtr
+	xmlNewCharEncodingHandler	(const char *name,
+					 xmlCharEncodingInputFunc input,
+					 xmlCharEncodingOutputFunc output);
+XMLPUBFUN xmlParserErrors
+	xmlCharEncNewCustomHandler	(const char *name,
+					 xmlCharEncConvFunc input,
+					 xmlCharEncConvFunc output,
+					 xmlCharEncConvCtxtDtor ctxtDtor,
+					 void *inputCtxt,
+					 void *outputCtxt,
+					 xmlCharEncodingHandler **out);
+
+/*
+ * Interfaces for encoding names and aliases.
+ */
+XMLPUBFUN int
+	xmlAddEncodingAlias		(const char *name,
+					 const char *alias);
+XMLPUBFUN int
+	xmlDelEncodingAlias		(const char *alias);
+XMLPUBFUN const char *
+	xmlGetEncodingAlias		(const char *alias);
+XMLPUBFUN void
+	xmlCleanupEncodingAliases	(void);
+XMLPUBFUN xmlCharEncoding
+	xmlParseCharEncoding		(const char *name);
+XMLPUBFUN const char *
+	xmlGetCharEncodingName		(xmlCharEncoding enc);
+
+/*
+ * Interfaces directly used by the parsers.
+ */
+XMLPUBFUN xmlCharEncoding
+	xmlDetectCharEncoding		(const unsigned char *in,
+					 int len);
+
+/** DOC_DISABLE */
+struct _xmlBuffer;
+/** DOC_ENABLE */
+XMLPUBFUN int
+	xmlCharEncOutFunc		(xmlCharEncodingHandler *handler,
+					 struct _xmlBuffer *out,
+					 struct _xmlBuffer *in);
+
+XMLPUBFUN int
+	xmlCharEncInFunc		(xmlCharEncodingHandler *handler,
+					 struct _xmlBuffer *out,
+					 struct _xmlBuffer *in);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlCharEncFirstLine		(xmlCharEncodingHandler *handler,
+					 struct _xmlBuffer *out,
+					 struct _xmlBuffer *in);
+XMLPUBFUN int
+	xmlCharEncCloseFunc		(xmlCharEncodingHandler *handler);
+
+/*
+ * Export a few useful functions
+ */
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN int
+	xmlUTF8ToIsolat1		(unsigned char *out,
+					 int *outlen,
+					 const unsigned char *in,
+					 int *inlen);
+#endif /* LIBXML_OUTPUT_ENABLED */
+XMLPUBFUN int
+	xmlIsolat1ToUTF8		(unsigned char *out,
+					 int *outlen,
+					 const unsigned char *in,
+					 int *inlen);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_CHAR_ENCODING_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/entities.h

@@ -0,0 +1,147 @@
+/*
+ * Summary: interface for the XML entities handling
+ * Description: this module provides some of the entity API needed
+ *              for the parser and applications.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_ENTITIES_H__
+#define __XML_ENTITIES_H__
+
+/** DOC_DISABLE */
+#include <libxml/xmlversion.h>
+#define XML_TREE_INTERNALS
+#include <libxml/tree.h>
+#undef XML_TREE_INTERNALS
+/** DOC_ENABLE */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The different valid entity types.
+ */
+typedef enum {
+    XML_INTERNAL_GENERAL_ENTITY = 1,
+    XML_EXTERNAL_GENERAL_PARSED_ENTITY = 2,
+    XML_EXTERNAL_GENERAL_UNPARSED_ENTITY = 3,
+    XML_INTERNAL_PARAMETER_ENTITY = 4,
+    XML_EXTERNAL_PARAMETER_ENTITY = 5,
+    XML_INTERNAL_PREDEFINED_ENTITY = 6
+} xmlEntityType;
+
+/*
+ * An unit of storage for an entity, contains the string, the value
+ * and the linkind data needed for the linking in the hash table.
+ */
+
+struct _xmlEntity {
+    void           *_private;	        /* application data */
+    xmlElementType          type;       /* XML_ENTITY_DECL, must be second ! */
+    const xmlChar          *name;	/* Entity name */
+    struct _xmlNode    *children;	/* First child link */
+    struct _xmlNode        *last;	/* Last child link */
+    struct _xmlDtd       *parent;	/* -> DTD */
+    struct _xmlNode        *next;	/* next sibling link  */
+    struct _xmlNode        *prev;	/* previous sibling link  */
+    struct _xmlDoc          *doc;       /* the containing document */
+
+    xmlChar                *orig;	/* content without ref substitution */
+    xmlChar             *content;	/* content or ndata if unparsed */
+    int                   length;	/* the content length */
+    xmlEntityType          etype;	/* The entity type */
+    const xmlChar    *ExternalID;	/* External identifier for PUBLIC */
+    const xmlChar      *SystemID;	/* URI for a SYSTEM or PUBLIC Entity */
+
+    struct _xmlEntity     *nexte;	/* unused */
+    const xmlChar           *URI;	/* the full URI as computed */
+    int                    owner;	/* unused */
+    int                    flags;       /* various flags */
+    unsigned long   expandedSize;       /* expanded size */
+};
+
+/*
+ * All entities are stored in an hash table.
+ * There is 2 separate hash tables for global and parameter entities.
+ */
+
+typedef struct _xmlHashTable xmlEntitiesTable;
+typedef xmlEntitiesTable *xmlEntitiesTablePtr;
+
+/*
+ * External functions:
+ */
+
+XMLPUBFUN xmlEntityPtr
+			xmlNewEntity		(xmlDocPtr doc,
+						 const xmlChar *name,
+						 int type,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID,
+						 const xmlChar *content);
+XMLPUBFUN void
+			xmlFreeEntity		(xmlEntityPtr entity);
+XMLPUBFUN int
+			xmlAddEntity		(xmlDocPtr doc,
+						 int extSubset,
+						 const xmlChar *name,
+						 int type,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID,
+						 const xmlChar *content,
+						 xmlEntityPtr *out);
+XMLPUBFUN xmlEntityPtr
+			xmlAddDocEntity		(xmlDocPtr doc,
+						 const xmlChar *name,
+						 int type,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID,
+						 const xmlChar *content);
+XMLPUBFUN xmlEntityPtr
+			xmlAddDtdEntity		(xmlDocPtr doc,
+						 const xmlChar *name,
+						 int type,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID,
+						 const xmlChar *content);
+XMLPUBFUN xmlEntityPtr
+			xmlGetPredefinedEntity	(const xmlChar *name);
+XMLPUBFUN xmlEntityPtr
+			xmlGetDocEntity		(const xmlDoc *doc,
+						 const xmlChar *name);
+XMLPUBFUN xmlEntityPtr
+			xmlGetDtdEntity		(xmlDocPtr doc,
+						 const xmlChar *name);
+XMLPUBFUN xmlEntityPtr
+			xmlGetParameterEntity	(xmlDocPtr doc,
+						 const xmlChar *name);
+XMLPUBFUN xmlChar *
+			xmlEncodeEntitiesReentrant(xmlDocPtr doc,
+						 const xmlChar *input);
+XMLPUBFUN xmlChar *
+			xmlEncodeSpecialChars	(const xmlDoc *doc,
+						 const xmlChar *input);
+XMLPUBFUN xmlEntitiesTablePtr
+			xmlCreateEntitiesTable	(void);
+XMLPUBFUN xmlEntitiesTablePtr
+			xmlCopyEntitiesTable	(xmlEntitiesTablePtr table);
+XMLPUBFUN void
+			xmlFreeEntitiesTable	(xmlEntitiesTablePtr table);
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN void
+			xmlDumpEntitiesTable	(xmlBufferPtr buf,
+						 xmlEntitiesTablePtr table);
+XMLPUBFUN void
+			xmlDumpEntityDecl	(xmlBufferPtr buf,
+						 xmlEntityPtr ent);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+#ifdef __cplusplus
+}
+#endif
+
+# endif /* __XML_ENTITIES_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/globals.h

@@ -0,0 +1,25 @@
+/*
+ * Summary: interface for all global variables of the library
+ * Description: Deprecated, don't use
+ *
+ * Copy: See Copyright for the status of this software.
+ */
+
+#ifndef __XML_GLOBALS_H
+#define __XML_GLOBALS_H
+
+#include <libxml/xmlversion.h>
+
+/*
+ * This file was required to access global variables until version v2.12.0.
+ *
+ * These includes are for backward compatibility.
+ */
+#include <libxml/HTMLparser.h>
+#include <libxml/parser.h>
+#include <libxml/xmlerror.h>
+#include <libxml/xmlIO.h>
+#include <libxml/xmlsave.h>
+#include <libxml/threads.h>
+
+#endif /* __XML_GLOBALS_H */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/hash.h

@@ -0,0 +1,251 @@
+/*
+ * Summary: Chained hash tables
+ * Description: This module implements the hash table support used in
+ *		various places in the library.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Bjorn Reese <bjorn.reese@systematic.dk>
+ */
+
+#ifndef __XML_HASH_H__
+#define __XML_HASH_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/dict.h>
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The hash table.
+ */
+typedef struct _xmlHashTable xmlHashTable;
+typedef xmlHashTable *xmlHashTablePtr;
+
+/*
+ * Recent version of gcc produce a warning when a function pointer is assigned
+ * to an object pointer, or vice versa.  The following macro is a dirty hack
+ * to allow suppression of the warning.  If your architecture has function
+ * pointers which are a different size than a void pointer, there may be some
+ * serious trouble within the library.
+ */
+/**
+ * XML_CAST_FPTR:
+ * @fptr:  pointer to a function
+ *
+ * Macro to do a casting from an object pointer to a
+ * function pointer without encountering a warning from
+ * gcc
+ *
+ * #define XML_CAST_FPTR(fptr) (*(void **)(&fptr))
+ * This macro violated ISO C aliasing rules (gcc4 on s390 broke)
+ * so it is disabled now
+ */
+
+#define XML_CAST_FPTR(fptr) fptr
+
+/*
+ * function types:
+ */
+/**
+ * xmlHashDeallocator:
+ * @payload:  the data in the hash
+ * @name:  the name associated
+ *
+ * Callback to free data from a hash.
+ */
+typedef void (*xmlHashDeallocator)(void *payload, const xmlChar *name);
+/**
+ * xmlHashCopier:
+ * @payload:  the data in the hash
+ * @name:  the name associated
+ *
+ * Callback to copy data from a hash.
+ *
+ * Returns a copy of the data or NULL in case of error.
+ */
+typedef void *(*xmlHashCopier)(void *payload, const xmlChar *name);
+/**
+ * xmlHashScanner:
+ * @payload:  the data in the hash
+ * @data:  extra scanner data
+ * @name:  the name associated
+ *
+ * Callback when scanning data in a hash with the simple scanner.
+ */
+typedef void (*xmlHashScanner)(void *payload, void *data, const xmlChar *name);
+/**
+ * xmlHashScannerFull:
+ * @payload:  the data in the hash
+ * @data:  extra scanner data
+ * @name:  the name associated
+ * @name2:  the second name associated
+ * @name3:  the third name associated
+ *
+ * Callback when scanning data in a hash with the full scanner.
+ */
+typedef void (*xmlHashScannerFull)(void *payload, void *data,
+				   const xmlChar *name, const xmlChar *name2,
+				   const xmlChar *name3);
+
+/*
+ * Constructor and destructor.
+ */
+XMLPUBFUN xmlHashTablePtr
+		xmlHashCreate		(int size);
+XMLPUBFUN xmlHashTablePtr
+		xmlHashCreateDict	(int size,
+					 xmlDictPtr dict);
+XMLPUBFUN void
+		xmlHashFree		(xmlHashTablePtr hash,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN void
+		xmlHashDefaultDeallocator(void *entry,
+					 const xmlChar *name);
+
+/*
+ * Add a new entry to the hash table.
+ */
+XMLPUBFUN int
+		xmlHashAdd		(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashAddEntry		(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashUpdateEntry	(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         void *userdata,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN int
+		xmlHashAdd2		(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashAddEntry2	(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashUpdateEntry2	(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         void *userdata,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN int
+		xmlHashAdd3		(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         const xmlChar *name3,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashAddEntry3	(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         const xmlChar *name3,
+		                         void *userdata);
+XMLPUBFUN int
+		xmlHashUpdateEntry3	(xmlHashTablePtr hash,
+		                         const xmlChar *name,
+		                         const xmlChar *name2,
+		                         const xmlChar *name3,
+		                         void *userdata,
+					 xmlHashDeallocator dealloc);
+
+/*
+ * Remove an entry from the hash table.
+ */
+XMLPUBFUN int
+		xmlHashRemoveEntry	(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN int
+		xmlHashRemoveEntry2	(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN int 
+		xmlHashRemoveEntry3	(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2,
+					 const xmlChar *name3,
+					 xmlHashDeallocator dealloc);
+
+/*
+ * Retrieve the payload.
+ */
+XMLPUBFUN void *
+		xmlHashLookup		(xmlHashTablePtr hash,
+					 const xmlChar *name);
+XMLPUBFUN void *
+		xmlHashLookup2		(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2);
+XMLPUBFUN void *
+		xmlHashLookup3		(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2,
+					 const xmlChar *name3);
+XMLPUBFUN void *
+		xmlHashQLookup		(xmlHashTablePtr hash,
+					 const xmlChar *prefix,
+					 const xmlChar *name);
+XMLPUBFUN void *
+		xmlHashQLookup2		(xmlHashTablePtr hash,
+					 const xmlChar *prefix,
+					 const xmlChar *name,
+					 const xmlChar *prefix2,
+					 const xmlChar *name2);
+XMLPUBFUN void *
+		xmlHashQLookup3		(xmlHashTablePtr hash,
+					 const xmlChar *prefix,
+					 const xmlChar *name,
+					 const xmlChar *prefix2,
+					 const xmlChar *name2,
+					 const xmlChar *prefix3,
+					 const xmlChar *name3);
+
+/*
+ * Helpers.
+ */
+XMLPUBFUN xmlHashTablePtr
+		xmlHashCopySafe		(xmlHashTablePtr hash,
+					 xmlHashCopier copy,
+					 xmlHashDeallocator dealloc);
+XMLPUBFUN xmlHashTablePtr
+		xmlHashCopy		(xmlHashTablePtr hash,
+					 xmlHashCopier copy);
+XMLPUBFUN int
+		xmlHashSize		(xmlHashTablePtr hash);
+XMLPUBFUN void
+		xmlHashScan		(xmlHashTablePtr hash,
+					 xmlHashScanner scan,
+					 void *data);
+XMLPUBFUN void
+		xmlHashScan3		(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2,
+					 const xmlChar *name3,
+					 xmlHashScanner scan,
+					 void *data);
+XMLPUBFUN void
+		xmlHashScanFull		(xmlHashTablePtr hash,
+					 xmlHashScannerFull scan,
+					 void *data);
+XMLPUBFUN void
+		xmlHashScanFull3	(xmlHashTablePtr hash,
+					 const xmlChar *name,
+					 const xmlChar *name2,
+					 const xmlChar *name3,
+					 xmlHashScannerFull scan,
+					 void *data);
+#ifdef __cplusplus
+}
+#endif
+#endif /* ! __XML_HASH_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/list.h

@@ -0,0 +1,137 @@
+/*
+ * Summary: lists interfaces
+ * Description: this module implement the list support used in
+ * various place in the library.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Gary Pennington <Gary.Pennington@uk.sun.com>
+ */
+
+#ifndef __XML_LINK_INCLUDE__
+#define __XML_LINK_INCLUDE__
+
+#include <libxml/xmlversion.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _xmlLink xmlLink;
+typedef xmlLink *xmlLinkPtr;
+
+typedef struct _xmlList xmlList;
+typedef xmlList *xmlListPtr;
+
+/**
+ * xmlListDeallocator:
+ * @lk:  the data to deallocate
+ *
+ * Callback function used to free data from a list.
+ */
+typedef void (*xmlListDeallocator) (xmlLinkPtr lk);
+/**
+ * xmlListDataCompare:
+ * @data0: the first data
+ * @data1: the second data
+ *
+ * Callback function used to compare 2 data.
+ *
+ * Returns 0 is equality, -1 or 1 otherwise depending on the ordering.
+ */
+typedef int  (*xmlListDataCompare) (const void *data0, const void *data1);
+/**
+ * xmlListWalker:
+ * @data: the data found in the list
+ * @user: extra user provided data to the walker
+ *
+ * Callback function used when walking a list with xmlListWalk().
+ *
+ * Returns 0 to stop walking the list, 1 otherwise.
+ */
+typedef int (*xmlListWalker) (const void *data, void *user);
+
+/* Creation/Deletion */
+XMLPUBFUN xmlListPtr
+		xmlListCreate		(xmlListDeallocator deallocator,
+	                                 xmlListDataCompare compare);
+XMLPUBFUN void
+		xmlListDelete		(xmlListPtr l);
+
+/* Basic Operators */
+XMLPUBFUN void *
+		xmlListSearch		(xmlListPtr l,
+					 void *data);
+XMLPUBFUN void *
+		xmlListReverseSearch	(xmlListPtr l,
+					 void *data);
+XMLPUBFUN int
+		xmlListInsert		(xmlListPtr l,
+					 void *data) ;
+XMLPUBFUN int
+		xmlListAppend		(xmlListPtr l,
+					 void *data) ;
+XMLPUBFUN int
+		xmlListRemoveFirst	(xmlListPtr l,
+					 void *data);
+XMLPUBFUN int
+		xmlListRemoveLast	(xmlListPtr l,
+					 void *data);
+XMLPUBFUN int
+		xmlListRemoveAll	(xmlListPtr l,
+					 void *data);
+XMLPUBFUN void
+		xmlListClear		(xmlListPtr l);
+XMLPUBFUN int
+		xmlListEmpty		(xmlListPtr l);
+XMLPUBFUN xmlLinkPtr
+		xmlListFront		(xmlListPtr l);
+XMLPUBFUN xmlLinkPtr
+		xmlListEnd		(xmlListPtr l);
+XMLPUBFUN int
+		xmlListSize		(xmlListPtr l);
+
+XMLPUBFUN void
+		xmlListPopFront		(xmlListPtr l);
+XMLPUBFUN void
+		xmlListPopBack		(xmlListPtr l);
+XMLPUBFUN int
+		xmlListPushFront	(xmlListPtr l,
+					 void *data);
+XMLPUBFUN int
+		xmlListPushBack		(xmlListPtr l,
+					 void *data);
+
+/* Advanced Operators */
+XMLPUBFUN void
+		xmlListReverse		(xmlListPtr l);
+XMLPUBFUN void
+		xmlListSort		(xmlListPtr l);
+XMLPUBFUN void
+		xmlListWalk		(xmlListPtr l,
+					 xmlListWalker walker,
+					 void *user);
+XMLPUBFUN void
+		xmlListReverseWalk	(xmlListPtr l,
+					 xmlListWalker walker,
+					 void *user);
+XMLPUBFUN void
+		xmlListMerge		(xmlListPtr l1,
+					 xmlListPtr l2);
+XMLPUBFUN xmlListPtr
+		xmlListDup		(xmlListPtr old);
+XMLPUBFUN int
+		xmlListCopy		(xmlListPtr cur,
+					 xmlListPtr old);
+/* Link operators */
+XMLPUBFUN void *
+		xmlLinkGetData          (xmlLinkPtr lk);
+
+/* xmlListUnique() */
+/* xmlListSwap */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_LINK_INCLUDE__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/nanoftp.h

@@ -0,0 +1,16 @@
+/*
+ * Summary: Removed legacy symbols for an outdated FTP client
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __NANO_FTP_H__
+#define __NANO_FTP_H__
+
+#ifdef __GNUC__
+  #warning "libxml/nanoftp.h is deprecated"
+#endif
+
+#endif /* __NANO_FTP_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/nanohttp.h

@@ -0,0 +1,98 @@
+/*
+ * Summary: minimal HTTP implementation
+ * Description: minimal HTTP implementation allowing to fetch resources
+ *              like external subset.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __NANO_HTTP_H__
+#define __NANO_HTTP_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_HTTP_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlNanoHTTPInit		(void);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlNanoHTTPCleanup	(void);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlNanoHTTPScanProxy	(const char *URL);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlNanoHTTPFetch	(const char *URL,
+				 const char *filename,
+				 char **contentType);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlNanoHTTPMethod	(const char *URL,
+				 const char *method,
+				 const char *input,
+				 char **contentType,
+				 const char *headers,
+				 int   ilen);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlNanoHTTPMethodRedir	(const char *URL,
+				 const char *method,
+				 const char *input,
+				 char **contentType,
+				 char **redir,
+				 const char *headers,
+				 int   ilen);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlNanoHTTPOpen		(const char *URL,
+				 char **contentType);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlNanoHTTPOpenRedir	(const char *URL,
+				 char **contentType,
+				 char **redir);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlNanoHTTPReturnCode	(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN const char *
+	xmlNanoHTTPAuthHeader	(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN const char *
+	xmlNanoHTTPRedir	(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlNanoHTTPContentLength( void * ctx );
+XML_DEPRECATED
+XMLPUBFUN const char *
+	xmlNanoHTTPEncoding	(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN const char *
+	xmlNanoHTTPMimeType	(void *ctx);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlNanoHTTPRead		(void *ctx,
+				 void *dest,
+				 int len);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlNanoHTTPSave		(void *ctxt,
+				 const char *filename);
+#endif /* LIBXML_OUTPUT_ENABLED */
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlNanoHTTPClose	(void *ctx);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_HTTP_ENABLED */
+#endif /* __NANO_HTTP_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/parserInternals.h

@@ -0,0 +1,591 @@
+/*
+ * Summary: internals routines and limits exported by the parser.
+ * Description: this module exports a number of internal parsing routines
+ *              they are not really all intended for applications but
+ *              can prove useful doing low level processing.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_PARSER_INTERNALS_H__
+#define __XML_PARSER_INTERNALS_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+#include <libxml/HTMLparser.h>
+#include <libxml/chvalid.h>
+#include <libxml/SAX2.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Backward compatibility
+ */
+#define inputPush xmlCtxtPushInput
+#define inputPop xmlCtxtPopInput
+#define xmlParserMaxDepth 256
+
+/**
+ * XML_MAX_TEXT_LENGTH:
+ *
+ * Maximum size allowed for a single text node when building a tree.
+ * This is not a limitation of the parser but a safety boundary feature,
+ * use XML_PARSE_HUGE option to override it.
+ * Introduced in 2.9.0
+ */
+#define XML_MAX_TEXT_LENGTH 10000000
+
+/**
+ * XML_MAX_HUGE_LENGTH:
+ *
+ * Maximum size allowed when XML_PARSE_HUGE is set.
+ */
+#define XML_MAX_HUGE_LENGTH 1000000000
+
+/**
+ * XML_MAX_NAME_LENGTH:
+ *
+ * Maximum size allowed for a markup identifier.
+ * This is not a limitation of the parser but a safety boundary feature,
+ * use XML_PARSE_HUGE option to override it.
+ * Note that with the use of parsing dictionaries overriding the limit
+ * may result in more runtime memory usage in face of "unfriendly' content
+ * Introduced in 2.9.0
+ */
+#define XML_MAX_NAME_LENGTH 50000
+
+/**
+ * XML_MAX_DICTIONARY_LIMIT:
+ *
+ * Maximum size allowed by the parser for a dictionary by default
+ * This is not a limitation of the parser but a safety boundary feature,
+ * use XML_PARSE_HUGE option to override it.
+ * Introduced in 2.9.0
+ */
+#define XML_MAX_DICTIONARY_LIMIT 100000000
+
+/**
+ * XML_MAX_LOOKUP_LIMIT:
+ *
+ * Maximum size allowed by the parser for ahead lookup
+ * This is an upper boundary enforced by the parser to avoid bad
+ * behaviour on "unfriendly' content
+ * Introduced in 2.9.0
+ */
+#define XML_MAX_LOOKUP_LIMIT 10000000
+
+/**
+ * XML_MAX_NAMELEN:
+ *
+ * Identifiers can be longer, but this will be more costly
+ * at runtime.
+ */
+#define XML_MAX_NAMELEN 100
+
+/************************************************************************
+ *									*
+ * UNICODE version of the macros.					*
+ *									*
+ ************************************************************************/
+/**
+ * IS_BYTE_CHAR:
+ * @c:  an byte value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [2] Char ::= #x9 | #xA | #xD | [#x20...]
+ * any byte character in the accepted range
+ */
+#define IS_BYTE_CHAR(c)	 xmlIsChar_ch(c)
+
+/**
+ * IS_CHAR:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [2] Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD]
+ *                  | [#x10000-#x10FFFF]
+ * any Unicode character, excluding the surrogate blocks, FFFE, and FFFF.
+ */
+#define IS_CHAR(c)   xmlIsCharQ(c)
+
+/**
+ * IS_CHAR_CH:
+ * @c: an xmlChar (usually an unsigned char)
+ *
+ * Behaves like IS_CHAR on single-byte value
+ */
+#define IS_CHAR_CH(c)  xmlIsChar_ch(c)
+
+/**
+ * IS_BLANK:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [3] S ::= (#x20 | #x9 | #xD | #xA)+
+ */
+#define IS_BLANK(c)  xmlIsBlankQ(c)
+
+/**
+ * IS_BLANK_CH:
+ * @c:  an xmlChar value (normally unsigned char)
+ *
+ * Behaviour same as IS_BLANK
+ */
+#define IS_BLANK_CH(c)  xmlIsBlank_ch(c)
+
+/**
+ * IS_BASECHAR:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [85] BaseChar ::= ... long list see REC ...
+ */
+#define IS_BASECHAR(c) xmlIsBaseCharQ(c)
+
+/**
+ * IS_DIGIT:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [88] Digit ::= ... long list see REC ...
+ */
+#define IS_DIGIT(c) xmlIsDigitQ(c)
+
+/**
+ * IS_DIGIT_CH:
+ * @c:  an xmlChar value (usually an unsigned char)
+ *
+ * Behaves like IS_DIGIT but with a single byte argument
+ */
+#define IS_DIGIT_CH(c)  xmlIsDigit_ch(c)
+
+/**
+ * IS_COMBINING:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ * [87] CombiningChar ::= ... long list see REC ...
+ */
+#define IS_COMBINING(c) xmlIsCombiningQ(c)
+
+/**
+ * IS_COMBINING_CH:
+ * @c:  an xmlChar (usually an unsigned char)
+ *
+ * Always false (all combining chars > 0xff)
+ */
+#define IS_COMBINING_CH(c) 0
+
+/**
+ * IS_EXTENDER:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ *
+ * [89] Extender ::= #x00B7 | #x02D0 | #x02D1 | #x0387 | #x0640 |
+ *                   #x0E46 | #x0EC6 | #x3005 | [#x3031-#x3035] |
+ *                   [#x309D-#x309E] | [#x30FC-#x30FE]
+ */
+#define IS_EXTENDER(c) xmlIsExtenderQ(c)
+
+/**
+ * IS_EXTENDER_CH:
+ * @c:  an xmlChar value (usually an unsigned char)
+ *
+ * Behaves like IS_EXTENDER but with a single-byte argument
+ */
+#define IS_EXTENDER_CH(c)  xmlIsExtender_ch(c)
+
+/**
+ * IS_IDEOGRAPHIC:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ *
+ * [86] Ideographic ::= [#x4E00-#x9FA5] | #x3007 | [#x3021-#x3029]
+ */
+#define IS_IDEOGRAPHIC(c) xmlIsIdeographicQ(c)
+
+/**
+ * IS_LETTER:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ *
+ * [84] Letter ::= BaseChar | Ideographic
+ */
+#define IS_LETTER(c) (IS_BASECHAR(c) || IS_IDEOGRAPHIC(c))
+
+/**
+ * IS_LETTER_CH:
+ * @c:  an xmlChar value (normally unsigned char)
+ *
+ * Macro behaves like IS_LETTER, but only check base chars
+ *
+ */
+#define IS_LETTER_CH(c) xmlIsBaseChar_ch(c)
+
+/**
+ * IS_ASCII_LETTER:
+ * @c: an xmlChar value
+ *
+ * Macro to check [a-zA-Z]
+ *
+ */
+#define IS_ASCII_LETTER(c)	((0x61 <= ((c) | 0x20)) && \
+                                 (((c) | 0x20) <= 0x7a))
+
+/**
+ * IS_ASCII_DIGIT:
+ * @c: an xmlChar value
+ *
+ * Macro to check [0-9]
+ *
+ */
+#define IS_ASCII_DIGIT(c)	((0x30 <= (c)) && ((c) <= 0x39))
+
+/**
+ * IS_PUBIDCHAR:
+ * @c:  an UNICODE value (int)
+ *
+ * Macro to check the following production in the XML spec:
+ *
+ *
+ * [13] PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
+ */
+#define IS_PUBIDCHAR(c)	xmlIsPubidCharQ(c)
+
+/**
+ * IS_PUBIDCHAR_CH:
+ * @c:  an xmlChar value (normally unsigned char)
+ *
+ * Same as IS_PUBIDCHAR but for single-byte value
+ */
+#define IS_PUBIDCHAR_CH(c) xmlIsPubidChar_ch(c)
+
+/**
+ * Global variables used for predefined strings.
+ */
+XMLPUBVAR const xmlChar xmlStringText[];
+XMLPUBVAR const xmlChar xmlStringTextNoenc[];
+XML_DEPRECATED
+XMLPUBVAR const xmlChar xmlStringComment[];
+
+XML_DEPRECATED
+XMLPUBFUN int                   xmlIsLetter     (int c);
+
+/**
+ * Parser context.
+ */
+XMLPUBFUN xmlParserCtxtPtr
+			xmlCreateFileParserCtxt	(const char *filename);
+XMLPUBFUN xmlParserCtxtPtr
+			xmlCreateURLParserCtxt	(const char *filename,
+						 int options);
+XMLPUBFUN xmlParserCtxtPtr
+			xmlCreateMemoryParserCtxt(const char *buffer,
+						 int size);
+XML_DEPRECATED
+XMLPUBFUN xmlParserCtxtPtr
+			xmlCreateEntityParserCtxt(const xmlChar *URL,
+						 const xmlChar *ID,
+						 const xmlChar *base);
+XMLPUBFUN void
+			xmlCtxtErrMemory	(xmlParserCtxtPtr ctxt);
+XMLPUBFUN int
+			xmlSwitchEncoding	(xmlParserCtxtPtr ctxt,
+						 xmlCharEncoding enc);
+XMLPUBFUN int
+			xmlSwitchEncodingName	(xmlParserCtxtPtr ctxt,
+						 const char *encoding);
+XMLPUBFUN int
+			xmlSwitchToEncoding	(xmlParserCtxtPtr ctxt,
+					 xmlCharEncodingHandlerPtr handler);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlSwitchInputEncoding	(xmlParserCtxtPtr ctxt,
+						 xmlParserInputPtr input,
+					 xmlCharEncodingHandlerPtr handler);
+
+/**
+ * Input Streams.
+ */
+XMLPUBFUN xmlParserInputPtr
+			xmlNewStringInputStream	(xmlParserCtxtPtr ctxt,
+						 const xmlChar *buffer);
+XML_DEPRECATED
+XMLPUBFUN xmlParserInputPtr
+			xmlNewEntityInputStream	(xmlParserCtxtPtr ctxt,
+						 xmlEntityPtr entity);
+XMLPUBFUN int
+			xmlCtxtPushInput	(xmlParserCtxtPtr ctxt,
+						 xmlParserInputPtr input);
+XMLPUBFUN xmlParserInputPtr
+			xmlCtxtPopInput		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlPushInput		(xmlParserCtxtPtr ctxt,
+						 xmlParserInputPtr input);
+XML_DEPRECATED
+XMLPUBFUN xmlChar
+			xmlPopInput		(xmlParserCtxtPtr ctxt);
+XMLPUBFUN void
+			xmlFreeInputStream	(xmlParserInputPtr input);
+XMLPUBFUN xmlParserInputPtr
+			xmlNewInputFromFile	(xmlParserCtxtPtr ctxt,
+						 const char *filename);
+XMLPUBFUN xmlParserInputPtr
+			xmlNewInputStream	(xmlParserCtxtPtr ctxt);
+
+/**
+ * Namespaces.
+ */
+XMLPUBFUN xmlChar *
+			xmlSplitQName		(xmlParserCtxtPtr ctxt,
+						 const xmlChar *name,
+						 xmlChar **prefix);
+
+/**
+ * Generic production rules.
+ */
+XML_DEPRECATED
+XMLPUBFUN const xmlChar *
+			xmlParseName		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseNmtoken		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseEntityValue	(xmlParserCtxtPtr ctxt,
+						 xmlChar **orig);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseAttValue	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseSystemLiteral	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParsePubidLiteral	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseCharData	(xmlParserCtxtPtr ctxt,
+						 int cdata);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseExternalID	(xmlParserCtxtPtr ctxt,
+						 xmlChar **publicID,
+						 int strict);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseComment		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN const xmlChar *
+			xmlParsePITarget	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParsePI		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseNotationDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseEntityDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseDefaultDecl	(xmlParserCtxtPtr ctxt,
+						 xmlChar **value);
+XML_DEPRECATED
+XMLPUBFUN xmlEnumerationPtr
+			xmlParseNotationType	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlEnumerationPtr
+			xmlParseEnumerationType	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseEnumeratedType	(xmlParserCtxtPtr ctxt,
+						 xmlEnumerationPtr *tree);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseAttributeType	(xmlParserCtxtPtr ctxt,
+						 xmlEnumerationPtr *tree);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseAttributeListDecl(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+			xmlParseElementMixedContentDecl
+						(xmlParserCtxtPtr ctxt,
+						 int inputchk);
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+			xmlParseElementChildrenContentDecl
+						(xmlParserCtxtPtr ctxt,
+						 int inputchk);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseElementContentDecl(xmlParserCtxtPtr ctxt,
+						 const xmlChar *name,
+						 xmlElementContentPtr *result);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseElementDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseMarkupDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseCharRef		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlEntityPtr
+			xmlParseEntityRef	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseReference	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParsePEReference	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseDocTypeDecl	(xmlParserCtxtPtr ctxt);
+#ifdef LIBXML_SAX1_ENABLED
+XML_DEPRECATED
+XMLPUBFUN const xmlChar *
+			xmlParseAttribute	(xmlParserCtxtPtr ctxt,
+						 xmlChar **value);
+XML_DEPRECATED
+XMLPUBFUN const xmlChar *
+			xmlParseStartTag	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseEndTag		(xmlParserCtxtPtr ctxt);
+#endif /* LIBXML_SAX1_ENABLED */
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseCDSect		(xmlParserCtxtPtr ctxt);
+XMLPUBFUN void
+			xmlParseContent		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseElement		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseVersionNum	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseVersionInfo	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+			xmlParseEncName		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN const xmlChar *
+			xmlParseEncodingDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int
+			xmlParseSDDecl		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseXMLDecl		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseTextDecl	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseMisc		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlParseExternalSubset	(xmlParserCtxtPtr ctxt,
+						 const xmlChar *ExternalID,
+						 const xmlChar *SystemID);
+/**
+ * XML_SUBSTITUTE_NONE:
+ *
+ * If no entities need to be substituted.
+ */
+#define XML_SUBSTITUTE_NONE	0
+/**
+ * XML_SUBSTITUTE_REF:
+ *
+ * Whether general entities need to be substituted.
+ */
+#define XML_SUBSTITUTE_REF	1
+/**
+ * XML_SUBSTITUTE_PEREF:
+ *
+ * Whether parameter entities need to be substituted.
+ */
+#define XML_SUBSTITUTE_PEREF	2
+/**
+ * XML_SUBSTITUTE_BOTH:
+ *
+ * Both general and parameter entities need to be substituted.
+ */
+#define XML_SUBSTITUTE_BOTH	3
+
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+		xmlStringDecodeEntities		(xmlParserCtxtPtr ctxt,
+						 const xmlChar *str,
+						 int what,
+						 xmlChar end,
+						 xmlChar  end2,
+						 xmlChar end3);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+		xmlStringLenDecodeEntities	(xmlParserCtxtPtr ctxt,
+						 const xmlChar *str,
+						 int len,
+						 int what,
+						 xmlChar end,
+						 xmlChar  end2,
+						 xmlChar end3);
+
+/*
+ * other commodities shared between parser.c and parserInternals.
+ */
+XML_DEPRECATED
+XMLPUBFUN int			xmlSkipBlankChars	(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int			xmlStringCurrentChar	(xmlParserCtxtPtr ctxt,
+						 const xmlChar *cur,
+						 int *len);
+XML_DEPRECATED
+XMLPUBFUN void			xmlParserHandlePEReference(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN int			xmlCheckLanguageID	(const xmlChar *lang);
+
+/*
+ * Really core function shared with HTML parser.
+ */
+XML_DEPRECATED
+XMLPUBFUN int			xmlCurrentChar		(xmlParserCtxtPtr ctxt,
+						 int *len);
+XML_DEPRECATED
+XMLPUBFUN int		xmlCopyCharMultiByte	(xmlChar *out,
+						 int val);
+XML_DEPRECATED
+XMLPUBFUN int			xmlCopyChar		(int len,
+						 xmlChar *out,
+						 int val);
+XML_DEPRECATED
+XMLPUBFUN void			xmlNextChar		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void			xmlParserInputShrink	(xmlParserInputPtr in);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_PARSER_INTERNALS_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/relaxng.h

@@ -0,0 +1,224 @@
+/*
+ * Summary: implementation of the Relax-NG validation
+ * Description: implementation of the Relax-NG validation
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_RELAX_NG__
+#define __XML_RELAX_NG__
+
+#include <libxml/xmlversion.h>
+#include <libxml/xmlerror.h>
+#include <libxml/xmlstring.h>
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+
+#ifdef LIBXML_RELAXNG_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _xmlRelaxNG xmlRelaxNG;
+typedef xmlRelaxNG *xmlRelaxNGPtr;
+
+
+/**
+ * xmlRelaxNGValidityErrorFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of an error callback from a Relax-NG validation
+ */
+typedef void (*xmlRelaxNGValidityErrorFunc) (void *ctx,
+						      const char *msg,
+						      ...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * xmlRelaxNGValidityWarningFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of a warning callback from a Relax-NG validation
+ */
+typedef void (*xmlRelaxNGValidityWarningFunc) (void *ctx,
+							const char *msg,
+							...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * A schemas validation context
+ */
+typedef struct _xmlRelaxNGParserCtxt xmlRelaxNGParserCtxt;
+typedef xmlRelaxNGParserCtxt *xmlRelaxNGParserCtxtPtr;
+
+typedef struct _xmlRelaxNGValidCtxt xmlRelaxNGValidCtxt;
+typedef xmlRelaxNGValidCtxt *xmlRelaxNGValidCtxtPtr;
+
+/*
+ * xmlRelaxNGValidErr:
+ *
+ * List of possible Relax NG validation errors
+ */
+typedef enum {
+    XML_RELAXNG_OK = 0,
+    XML_RELAXNG_ERR_MEMORY,
+    XML_RELAXNG_ERR_TYPE,
+    XML_RELAXNG_ERR_TYPEVAL,
+    XML_RELAXNG_ERR_DUPID,
+    XML_RELAXNG_ERR_TYPECMP,
+    XML_RELAXNG_ERR_NOSTATE,
+    XML_RELAXNG_ERR_NODEFINE,
+    XML_RELAXNG_ERR_LISTEXTRA,
+    XML_RELAXNG_ERR_LISTEMPTY,
+    XML_RELAXNG_ERR_INTERNODATA,
+    XML_RELAXNG_ERR_INTERSEQ,
+    XML_RELAXNG_ERR_INTEREXTRA,
+    XML_RELAXNG_ERR_ELEMNAME,
+    XML_RELAXNG_ERR_ATTRNAME,
+    XML_RELAXNG_ERR_ELEMNONS,
+    XML_RELAXNG_ERR_ATTRNONS,
+    XML_RELAXNG_ERR_ELEMWRONGNS,
+    XML_RELAXNG_ERR_ATTRWRONGNS,
+    XML_RELAXNG_ERR_ELEMEXTRANS,
+    XML_RELAXNG_ERR_ATTREXTRANS,
+    XML_RELAXNG_ERR_ELEMNOTEMPTY,
+    XML_RELAXNG_ERR_NOELEM,
+    XML_RELAXNG_ERR_NOTELEM,
+    XML_RELAXNG_ERR_ATTRVALID,
+    XML_RELAXNG_ERR_CONTENTVALID,
+    XML_RELAXNG_ERR_EXTRACONTENT,
+    XML_RELAXNG_ERR_INVALIDATTR,
+    XML_RELAXNG_ERR_DATAELEM,
+    XML_RELAXNG_ERR_VALELEM,
+    XML_RELAXNG_ERR_LISTELEM,
+    XML_RELAXNG_ERR_DATATYPE,
+    XML_RELAXNG_ERR_VALUE,
+    XML_RELAXNG_ERR_LIST,
+    XML_RELAXNG_ERR_NOGRAMMAR,
+    XML_RELAXNG_ERR_EXTRADATA,
+    XML_RELAXNG_ERR_LACKDATA,
+    XML_RELAXNG_ERR_INTERNAL,
+    XML_RELAXNG_ERR_ELEMWRONG,
+    XML_RELAXNG_ERR_TEXTWRONG
+} xmlRelaxNGValidErr;
+
+/*
+ * xmlRelaxNGParserFlags:
+ *
+ * List of possible Relax NG Parser flags
+ */
+typedef enum {
+    XML_RELAXNGP_NONE = 0,
+    XML_RELAXNGP_FREE_DOC = 1,
+    XML_RELAXNGP_CRNG = 2
+} xmlRelaxNGParserFlag;
+
+XMLPUBFUN int
+		    xmlRelaxNGInitTypes		(void);
+XML_DEPRECATED
+XMLPUBFUN void
+		    xmlRelaxNGCleanupTypes	(void);
+
+/*
+ * Interfaces for parsing.
+ */
+XMLPUBFUN xmlRelaxNGParserCtxtPtr
+		    xmlRelaxNGNewParserCtxt	(const char *URL);
+XMLPUBFUN xmlRelaxNGParserCtxtPtr
+		    xmlRelaxNGNewMemParserCtxt	(const char *buffer,
+						 int size);
+XMLPUBFUN xmlRelaxNGParserCtxtPtr
+		    xmlRelaxNGNewDocParserCtxt	(xmlDocPtr doc);
+
+XMLPUBFUN int
+		    xmlRelaxParserSetFlag	(xmlRelaxNGParserCtxtPtr ctxt,
+						 int flag);
+
+XMLPUBFUN void
+		    xmlRelaxNGFreeParserCtxt	(xmlRelaxNGParserCtxtPtr ctxt);
+XMLPUBFUN void
+		    xmlRelaxNGSetParserErrors(xmlRelaxNGParserCtxtPtr ctxt,
+					 xmlRelaxNGValidityErrorFunc err,
+					 xmlRelaxNGValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN int
+		    xmlRelaxNGGetParserErrors(xmlRelaxNGParserCtxtPtr ctxt,
+					 xmlRelaxNGValidityErrorFunc *err,
+					 xmlRelaxNGValidityWarningFunc *warn,
+					 void **ctx);
+XMLPUBFUN void
+		    xmlRelaxNGSetParserStructuredErrors(
+					 xmlRelaxNGParserCtxtPtr ctxt,
+					 xmlStructuredErrorFunc serror,
+					 void *ctx);
+XMLPUBFUN void
+		    xmlRelaxNGSetResourceLoader	(xmlRelaxNGParserCtxtPtr ctxt,
+						 xmlResourceLoader loader,
+						 void *vctxt);
+XMLPUBFUN xmlRelaxNGPtr
+		    xmlRelaxNGParse		(xmlRelaxNGParserCtxtPtr ctxt);
+XMLPUBFUN void
+		    xmlRelaxNGFree		(xmlRelaxNGPtr schema);
+#ifdef LIBXML_OUTPUT_ENABLED
+XMLPUBFUN void
+		    xmlRelaxNGDump		(FILE *output,
+					 xmlRelaxNGPtr schema);
+XMLPUBFUN void
+		    xmlRelaxNGDumpTree	(FILE * output,
+					 xmlRelaxNGPtr schema);
+#endif /* LIBXML_OUTPUT_ENABLED */
+/*
+ * Interfaces for validating
+ */
+XMLPUBFUN void
+		    xmlRelaxNGSetValidErrors(xmlRelaxNGValidCtxtPtr ctxt,
+					 xmlRelaxNGValidityErrorFunc err,
+					 xmlRelaxNGValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN int
+		    xmlRelaxNGGetValidErrors(xmlRelaxNGValidCtxtPtr ctxt,
+					 xmlRelaxNGValidityErrorFunc *err,
+					 xmlRelaxNGValidityWarningFunc *warn,
+					 void **ctx);
+XMLPUBFUN void
+			xmlRelaxNGSetValidStructuredErrors(xmlRelaxNGValidCtxtPtr ctxt,
+					  xmlStructuredErrorFunc serror, void *ctx);
+XMLPUBFUN xmlRelaxNGValidCtxtPtr
+		    xmlRelaxNGNewValidCtxt	(xmlRelaxNGPtr schema);
+XMLPUBFUN void
+		    xmlRelaxNGFreeValidCtxt	(xmlRelaxNGValidCtxtPtr ctxt);
+XMLPUBFUN int
+		    xmlRelaxNGValidateDoc	(xmlRelaxNGValidCtxtPtr ctxt,
+						 xmlDocPtr doc);
+/*
+ * Interfaces for progressive validation when possible
+ */
+XMLPUBFUN int
+		    xmlRelaxNGValidatePushElement	(xmlRelaxNGValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem);
+XMLPUBFUN int
+		    xmlRelaxNGValidatePushCData	(xmlRelaxNGValidCtxtPtr ctxt,
+					 const xmlChar *data,
+					 int len);
+XMLPUBFUN int
+		    xmlRelaxNGValidatePopElement	(xmlRelaxNGValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem);
+XMLPUBFUN int
+		    xmlRelaxNGValidateFullElement	(xmlRelaxNGValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_RELAXNG_ENABLED */
+
+#endif /* __XML_RELAX_NG__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/schemasInternals.h

@@ -0,0 +1,959 @@
+/*
+ * Summary: internal interfaces for XML Schemas
+ * Description: internal interfaces for the XML Schemas handling
+ *              and schema validity checking
+ *		The Schemas development is a Work In Progress.
+ *              Some of those interfaces are not guaranteed to be API or ABI stable !
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_SCHEMA_INTERNALS_H__
+#define __XML_SCHEMA_INTERNALS_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_SCHEMAS_ENABLED
+
+#include <libxml/xmlregexp.h>
+#include <libxml/hash.h>
+#include <libxml/dict.h>
+#include <libxml/tree.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    XML_SCHEMAS_UNKNOWN = 0,
+    XML_SCHEMAS_STRING = 1,
+    XML_SCHEMAS_NORMSTRING = 2,
+    XML_SCHEMAS_DECIMAL = 3,
+    XML_SCHEMAS_TIME = 4,
+    XML_SCHEMAS_GDAY = 5,
+    XML_SCHEMAS_GMONTH = 6,
+    XML_SCHEMAS_GMONTHDAY = 7,
+    XML_SCHEMAS_GYEAR = 8,
+    XML_SCHEMAS_GYEARMONTH = 9,
+    XML_SCHEMAS_DATE = 10,
+    XML_SCHEMAS_DATETIME = 11,
+    XML_SCHEMAS_DURATION = 12,
+    XML_SCHEMAS_FLOAT = 13,
+    XML_SCHEMAS_DOUBLE = 14,
+    XML_SCHEMAS_BOOLEAN = 15,
+    XML_SCHEMAS_TOKEN = 16,
+    XML_SCHEMAS_LANGUAGE = 17,
+    XML_SCHEMAS_NMTOKEN = 18,
+    XML_SCHEMAS_NMTOKENS = 19,
+    XML_SCHEMAS_NAME = 20,
+    XML_SCHEMAS_QNAME = 21,
+    XML_SCHEMAS_NCNAME = 22,
+    XML_SCHEMAS_ID = 23,
+    XML_SCHEMAS_IDREF = 24,
+    XML_SCHEMAS_IDREFS = 25,
+    XML_SCHEMAS_ENTITY = 26,
+    XML_SCHEMAS_ENTITIES = 27,
+    XML_SCHEMAS_NOTATION = 28,
+    XML_SCHEMAS_ANYURI = 29,
+    XML_SCHEMAS_INTEGER = 30,
+    XML_SCHEMAS_NPINTEGER = 31,
+    XML_SCHEMAS_NINTEGER = 32,
+    XML_SCHEMAS_NNINTEGER = 33,
+    XML_SCHEMAS_PINTEGER = 34,
+    XML_SCHEMAS_INT = 35,
+    XML_SCHEMAS_UINT = 36,
+    XML_SCHEMAS_LONG = 37,
+    XML_SCHEMAS_ULONG = 38,
+    XML_SCHEMAS_SHORT = 39,
+    XML_SCHEMAS_USHORT = 40,
+    XML_SCHEMAS_BYTE = 41,
+    XML_SCHEMAS_UBYTE = 42,
+    XML_SCHEMAS_HEXBINARY = 43,
+    XML_SCHEMAS_BASE64BINARY = 44,
+    XML_SCHEMAS_ANYTYPE = 45,
+    XML_SCHEMAS_ANYSIMPLETYPE = 46
+} xmlSchemaValType;
+
+/*
+ * XML Schemas defines multiple type of types.
+ */
+typedef enum {
+    XML_SCHEMA_TYPE_BASIC = 1, /* A built-in datatype */
+    XML_SCHEMA_TYPE_ANY,
+    XML_SCHEMA_TYPE_FACET,
+    XML_SCHEMA_TYPE_SIMPLE,
+    XML_SCHEMA_TYPE_COMPLEX,
+    XML_SCHEMA_TYPE_SEQUENCE = 6,
+    XML_SCHEMA_TYPE_CHOICE,
+    XML_SCHEMA_TYPE_ALL,
+    XML_SCHEMA_TYPE_SIMPLE_CONTENT,
+    XML_SCHEMA_TYPE_COMPLEX_CONTENT,
+    XML_SCHEMA_TYPE_UR,
+    XML_SCHEMA_TYPE_RESTRICTION,
+    XML_SCHEMA_TYPE_EXTENSION,
+    XML_SCHEMA_TYPE_ELEMENT,
+    XML_SCHEMA_TYPE_ATTRIBUTE,
+    XML_SCHEMA_TYPE_ATTRIBUTEGROUP,
+    XML_SCHEMA_TYPE_GROUP,
+    XML_SCHEMA_TYPE_NOTATION,
+    XML_SCHEMA_TYPE_LIST,
+    XML_SCHEMA_TYPE_UNION,
+    XML_SCHEMA_TYPE_ANY_ATTRIBUTE,
+    XML_SCHEMA_TYPE_IDC_UNIQUE,
+    XML_SCHEMA_TYPE_IDC_KEY,
+    XML_SCHEMA_TYPE_IDC_KEYREF,
+    XML_SCHEMA_TYPE_PARTICLE = 25,
+    XML_SCHEMA_TYPE_ATTRIBUTE_USE,
+    XML_SCHEMA_FACET_MININCLUSIVE = 1000,
+    XML_SCHEMA_FACET_MINEXCLUSIVE,
+    XML_SCHEMA_FACET_MAXINCLUSIVE,
+    XML_SCHEMA_FACET_MAXEXCLUSIVE,
+    XML_SCHEMA_FACET_TOTALDIGITS,
+    XML_SCHEMA_FACET_FRACTIONDIGITS,
+    XML_SCHEMA_FACET_PATTERN,
+    XML_SCHEMA_FACET_ENUMERATION,
+    XML_SCHEMA_FACET_WHITESPACE,
+    XML_SCHEMA_FACET_LENGTH,
+    XML_SCHEMA_FACET_MAXLENGTH,
+    XML_SCHEMA_FACET_MINLENGTH,
+    XML_SCHEMA_EXTRA_QNAMEREF = 2000,
+    XML_SCHEMA_EXTRA_ATTR_USE_PROHIB
+} xmlSchemaTypeType;
+
+typedef enum {
+    XML_SCHEMA_CONTENT_UNKNOWN = 0,
+    XML_SCHEMA_CONTENT_EMPTY = 1,
+    XML_SCHEMA_CONTENT_ELEMENTS,
+    XML_SCHEMA_CONTENT_MIXED,
+    XML_SCHEMA_CONTENT_SIMPLE,
+    XML_SCHEMA_CONTENT_MIXED_OR_ELEMENTS, /* Obsolete */
+    XML_SCHEMA_CONTENT_BASIC,
+    XML_SCHEMA_CONTENT_ANY
+} xmlSchemaContentType;
+
+typedef struct _xmlSchemaVal xmlSchemaVal;
+typedef xmlSchemaVal *xmlSchemaValPtr;
+
+typedef struct _xmlSchemaType xmlSchemaType;
+typedef xmlSchemaType *xmlSchemaTypePtr;
+
+typedef struct _xmlSchemaFacet xmlSchemaFacet;
+typedef xmlSchemaFacet *xmlSchemaFacetPtr;
+
+/**
+ * Annotation
+ */
+typedef struct _xmlSchemaAnnot xmlSchemaAnnot;
+typedef xmlSchemaAnnot *xmlSchemaAnnotPtr;
+struct _xmlSchemaAnnot {
+    struct _xmlSchemaAnnot *next;
+    xmlNodePtr content;         /* the annotation */
+};
+
+/**
+ * XML_SCHEMAS_ANYATTR_SKIP:
+ *
+ * Skip unknown attribute from validation
+ * Obsolete, not used anymore.
+ */
+#define XML_SCHEMAS_ANYATTR_SKIP        1
+/**
+ * XML_SCHEMAS_ANYATTR_LAX:
+ *
+ * Ignore validation non definition on attributes
+ * Obsolete, not used anymore.
+ */
+#define XML_SCHEMAS_ANYATTR_LAX                2
+/**
+ * XML_SCHEMAS_ANYATTR_STRICT:
+ *
+ * Apply strict validation rules on attributes
+ * Obsolete, not used anymore.
+ */
+#define XML_SCHEMAS_ANYATTR_STRICT        3
+/**
+ * XML_SCHEMAS_ANY_SKIP:
+ *
+ * Skip unknown attribute from validation
+ */
+#define XML_SCHEMAS_ANY_SKIP        1
+/**
+ * XML_SCHEMAS_ANY_LAX:
+ *
+ * Used by wildcards.
+ * Validate if type found, don't worry if not found
+ */
+#define XML_SCHEMAS_ANY_LAX                2
+/**
+ * XML_SCHEMAS_ANY_STRICT:
+ *
+ * Used by wildcards.
+ * Apply strict validation rules
+ */
+#define XML_SCHEMAS_ANY_STRICT        3
+/**
+ * XML_SCHEMAS_ATTR_USE_PROHIBITED:
+ *
+ * Used by wildcards.
+ * The attribute is prohibited.
+ */
+#define XML_SCHEMAS_ATTR_USE_PROHIBITED 0
+/**
+ * XML_SCHEMAS_ATTR_USE_REQUIRED:
+ *
+ * The attribute is required.
+ */
+#define XML_SCHEMAS_ATTR_USE_REQUIRED 1
+/**
+ * XML_SCHEMAS_ATTR_USE_OPTIONAL:
+ *
+ * The attribute is optional.
+ */
+#define XML_SCHEMAS_ATTR_USE_OPTIONAL 2
+/**
+ * XML_SCHEMAS_ATTR_GLOBAL:
+ *
+ * allow elements in no namespace
+ */
+#define XML_SCHEMAS_ATTR_GLOBAL        1 << 0
+/**
+ * XML_SCHEMAS_ATTR_NSDEFAULT:
+ *
+ * allow elements in no namespace
+ */
+#define XML_SCHEMAS_ATTR_NSDEFAULT        1 << 7
+/**
+ * XML_SCHEMAS_ATTR_INTERNAL_RESOLVED:
+ *
+ * this is set when the "type" and "ref" references
+ * have been resolved.
+ */
+#define XML_SCHEMAS_ATTR_INTERNAL_RESOLVED        1 << 8
+/**
+ * XML_SCHEMAS_ATTR_FIXED:
+ *
+ * the attribute has a fixed value
+ */
+#define XML_SCHEMAS_ATTR_FIXED        1 << 9
+
+/**
+ * xmlSchemaAttribute:
+ * An attribute definition.
+ */
+
+typedef struct _xmlSchemaAttribute xmlSchemaAttribute;
+typedef xmlSchemaAttribute *xmlSchemaAttributePtr;
+struct _xmlSchemaAttribute {
+    xmlSchemaTypeType type;
+    struct _xmlSchemaAttribute *next; /* the next attribute (not used?) */
+    const xmlChar *name; /* the name of the declaration */
+    const xmlChar *id; /* Deprecated; not used */
+    const xmlChar *ref; /* Deprecated; not used */
+    const xmlChar *refNs; /* Deprecated; not used */
+    const xmlChar *typeName; /* the local name of the type definition */
+    const xmlChar *typeNs; /* the ns URI of the type definition */
+    xmlSchemaAnnotPtr annot;
+
+    xmlSchemaTypePtr base; /* Deprecated; not used */
+    int occurs; /* Deprecated; not used */
+    const xmlChar *defValue; /* The initial value of the value constraint */
+    xmlSchemaTypePtr subtypes; /* the type definition */
+    xmlNodePtr node;
+    const xmlChar *targetNamespace;
+    int flags;
+    const xmlChar *refPrefix; /* Deprecated; not used */
+    xmlSchemaValPtr defVal; /* The compiled value constraint */
+    xmlSchemaAttributePtr refDecl; /* Deprecated; not used */
+};
+
+/**
+ * xmlSchemaAttributeLink:
+ * Used to build a list of attribute uses on complexType definitions.
+ * WARNING: Deprecated; not used.
+ */
+typedef struct _xmlSchemaAttributeLink xmlSchemaAttributeLink;
+typedef xmlSchemaAttributeLink *xmlSchemaAttributeLinkPtr;
+struct _xmlSchemaAttributeLink {
+    struct _xmlSchemaAttributeLink *next;/* the next attribute link ... */
+    struct _xmlSchemaAttribute *attr;/* the linked attribute */
+};
+
+/**
+ * XML_SCHEMAS_WILDCARD_COMPLETE:
+ *
+ * If the wildcard is complete.
+ */
+#define XML_SCHEMAS_WILDCARD_COMPLETE 1 << 0
+
+/**
+ * xmlSchemaCharValueLink:
+ * Used to build a list of namespaces on wildcards.
+ */
+typedef struct _xmlSchemaWildcardNs xmlSchemaWildcardNs;
+typedef xmlSchemaWildcardNs *xmlSchemaWildcardNsPtr;
+struct _xmlSchemaWildcardNs {
+    struct _xmlSchemaWildcardNs *next;/* the next constraint link ... */
+    const xmlChar *value;/* the value */
+};
+
+/**
+ * xmlSchemaWildcard.
+ * A wildcard.
+ */
+typedef struct _xmlSchemaWildcard xmlSchemaWildcard;
+typedef xmlSchemaWildcard *xmlSchemaWildcardPtr;
+struct _xmlSchemaWildcard {
+    xmlSchemaTypeType type;        /* The kind of type */
+    const xmlChar *id; /* Deprecated; not used */
+    xmlSchemaAnnotPtr annot;
+    xmlNodePtr node;
+    int minOccurs; /* Deprecated; not used */
+    int maxOccurs; /* Deprecated; not used */
+    int processContents;
+    int any; /* Indicates if the ns constraint is of ##any */
+    xmlSchemaWildcardNsPtr nsSet; /* The list of allowed namespaces */
+    xmlSchemaWildcardNsPtr negNsSet; /* The negated namespace */
+    int flags;
+};
+
+/**
+ * XML_SCHEMAS_ATTRGROUP_WILDCARD_BUILDED:
+ *
+ * The attribute wildcard has been built.
+ */
+#define XML_SCHEMAS_ATTRGROUP_WILDCARD_BUILDED 1 << 0
+/**
+ * XML_SCHEMAS_ATTRGROUP_GLOBAL:
+ *
+ * The attribute group has been defined.
+ */
+#define XML_SCHEMAS_ATTRGROUP_GLOBAL 1 << 1
+/**
+ * XML_SCHEMAS_ATTRGROUP_MARKED:
+ *
+ * Marks the attr group as marked; used for circular checks.
+ */
+#define XML_SCHEMAS_ATTRGROUP_MARKED 1 << 2
+
+/**
+ * XML_SCHEMAS_ATTRGROUP_REDEFINED:
+ *
+ * The attr group was redefined.
+ */
+#define XML_SCHEMAS_ATTRGROUP_REDEFINED 1 << 3
+/**
+ * XML_SCHEMAS_ATTRGROUP_HAS_REFS:
+ *
+ * Whether this attr. group contains attr. group references.
+ */
+#define XML_SCHEMAS_ATTRGROUP_HAS_REFS 1 << 4
+
+/**
+ * An attribute group definition.
+ *
+ * xmlSchemaAttribute and xmlSchemaAttributeGroup start of structures
+ * must be kept similar
+ */
+typedef struct _xmlSchemaAttributeGroup xmlSchemaAttributeGroup;
+typedef xmlSchemaAttributeGroup *xmlSchemaAttributeGroupPtr;
+struct _xmlSchemaAttributeGroup {
+    xmlSchemaTypeType type;        /* The kind of type */
+    struct _xmlSchemaAttribute *next;/* the next attribute if in a group ... */
+    const xmlChar *name;
+    const xmlChar *id;
+    const xmlChar *ref; /* Deprecated; not used */
+    const xmlChar *refNs; /* Deprecated; not used */
+    xmlSchemaAnnotPtr annot;
+
+    xmlSchemaAttributePtr attributes; /* Deprecated; not used */
+    xmlNodePtr node;
+    int flags;
+    xmlSchemaWildcardPtr attributeWildcard;
+    const xmlChar *refPrefix; /* Deprecated; not used */
+    xmlSchemaAttributeGroupPtr refItem; /* Deprecated; not used */
+    const xmlChar *targetNamespace;
+    void *attrUses;
+};
+
+/**
+ * xmlSchemaTypeLink:
+ * Used to build a list of types (e.g. member types of
+ * simpleType with variety "union").
+ */
+typedef struct _xmlSchemaTypeLink xmlSchemaTypeLink;
+typedef xmlSchemaTypeLink *xmlSchemaTypeLinkPtr;
+struct _xmlSchemaTypeLink {
+    struct _xmlSchemaTypeLink *next;/* the next type link ... */
+    xmlSchemaTypePtr type;/* the linked type */
+};
+
+/**
+ * xmlSchemaFacetLink:
+ * Used to build a list of facets.
+ */
+typedef struct _xmlSchemaFacetLink xmlSchemaFacetLink;
+typedef xmlSchemaFacetLink *xmlSchemaFacetLinkPtr;
+struct _xmlSchemaFacetLink {
+    struct _xmlSchemaFacetLink *next;/* the next facet link ... */
+    xmlSchemaFacetPtr facet;/* the linked facet */
+};
+
+/**
+ * XML_SCHEMAS_TYPE_MIXED:
+ *
+ * the element content type is mixed
+ */
+#define XML_SCHEMAS_TYPE_MIXED                1 << 0
+/**
+ * XML_SCHEMAS_TYPE_DERIVATION_METHOD_EXTENSION:
+ *
+ * the simple or complex type has a derivation method of "extension".
+ */
+#define XML_SCHEMAS_TYPE_DERIVATION_METHOD_EXTENSION                1 << 1
+/**
+ * XML_SCHEMAS_TYPE_DERIVATION_METHOD_RESTRICTION:
+ *
+ * the simple or complex type has a derivation method of "restriction".
+ */
+#define XML_SCHEMAS_TYPE_DERIVATION_METHOD_RESTRICTION                1 << 2
+/**
+ * XML_SCHEMAS_TYPE_GLOBAL:
+ *
+ * the type is global
+ */
+#define XML_SCHEMAS_TYPE_GLOBAL                1 << 3
+/**
+ * XML_SCHEMAS_TYPE_OWNED_ATTR_WILDCARD:
+ *
+ * the complexType owns an attribute wildcard, i.e.
+ * it can be freed by the complexType
+ */
+#define XML_SCHEMAS_TYPE_OWNED_ATTR_WILDCARD    1 << 4 /* Obsolete. */
+/**
+ * XML_SCHEMAS_TYPE_VARIETY_ABSENT:
+ *
+ * the simpleType has a variety of "absent".
+ * TODO: Actually not necessary :-/, since if
+ * none of the variety flags occur then it's
+ * automatically absent.
+ */
+#define XML_SCHEMAS_TYPE_VARIETY_ABSENT    1 << 5
+/**
+ * XML_SCHEMAS_TYPE_VARIETY_LIST:
+ *
+ * the simpleType has a variety of "list".
+ */
+#define XML_SCHEMAS_TYPE_VARIETY_LIST    1 << 6
+/**
+ * XML_SCHEMAS_TYPE_VARIETY_UNION:
+ *
+ * the simpleType has a variety of "union".
+ */
+#define XML_SCHEMAS_TYPE_VARIETY_UNION    1 << 7
+/**
+ * XML_SCHEMAS_TYPE_VARIETY_ATOMIC:
+ *
+ * the simpleType has a variety of "union".
+ */
+#define XML_SCHEMAS_TYPE_VARIETY_ATOMIC    1 << 8
+/**
+ * XML_SCHEMAS_TYPE_FINAL_EXTENSION:
+ *
+ * the complexType has a final of "extension".
+ */
+#define XML_SCHEMAS_TYPE_FINAL_EXTENSION    1 << 9
+/**
+ * XML_SCHEMAS_TYPE_FINAL_RESTRICTION:
+ *
+ * the simpleType/complexType has a final of "restriction".
+ */
+#define XML_SCHEMAS_TYPE_FINAL_RESTRICTION    1 << 10
+/**
+ * XML_SCHEMAS_TYPE_FINAL_LIST:
+ *
+ * the simpleType has a final of "list".
+ */
+#define XML_SCHEMAS_TYPE_FINAL_LIST    1 << 11
+/**
+ * XML_SCHEMAS_TYPE_FINAL_UNION:
+ *
+ * the simpleType has a final of "union".
+ */
+#define XML_SCHEMAS_TYPE_FINAL_UNION    1 << 12
+/**
+ * XML_SCHEMAS_TYPE_FINAL_DEFAULT:
+ *
+ * the simpleType has a final of "default".
+ */
+#define XML_SCHEMAS_TYPE_FINAL_DEFAULT    1 << 13
+/**
+ * XML_SCHEMAS_TYPE_BUILTIN_PRIMITIVE:
+ *
+ * Marks the item as a builtin primitive.
+ */
+#define XML_SCHEMAS_TYPE_BUILTIN_PRIMITIVE    1 << 14
+/**
+ * XML_SCHEMAS_TYPE_MARKED:
+ *
+ * Marks the item as marked; used for circular checks.
+ */
+#define XML_SCHEMAS_TYPE_MARKED        1 << 16
+/**
+ * XML_SCHEMAS_TYPE_BLOCK_DEFAULT:
+ *
+ * the complexType did not specify 'block' so use the default of the
+ * <schema> item.
+ */
+#define XML_SCHEMAS_TYPE_BLOCK_DEFAULT    1 << 17
+/**
+ * XML_SCHEMAS_TYPE_BLOCK_EXTENSION:
+ *
+ * the complexType has a 'block' of "extension".
+ */
+#define XML_SCHEMAS_TYPE_BLOCK_EXTENSION    1 << 18
+/**
+ * XML_SCHEMAS_TYPE_BLOCK_RESTRICTION:
+ *
+ * the complexType has a 'block' of "restriction".
+ */
+#define XML_SCHEMAS_TYPE_BLOCK_RESTRICTION    1 << 19
+/**
+ * XML_SCHEMAS_TYPE_ABSTRACT:
+ *
+ * the simple/complexType is abstract.
+ */
+#define XML_SCHEMAS_TYPE_ABSTRACT    1 << 20
+/**
+ * XML_SCHEMAS_TYPE_FACETSNEEDVALUE:
+ *
+ * indicates if the facets need a computed value
+ */
+#define XML_SCHEMAS_TYPE_FACETSNEEDVALUE    1 << 21
+/**
+ * XML_SCHEMAS_TYPE_INTERNAL_RESOLVED:
+ *
+ * indicates that the type was typefixed
+ */
+#define XML_SCHEMAS_TYPE_INTERNAL_RESOLVED    1 << 22
+/**
+ * XML_SCHEMAS_TYPE_INTERNAL_INVALID:
+ *
+ * indicates that the type is invalid
+ */
+#define XML_SCHEMAS_TYPE_INTERNAL_INVALID    1 << 23
+/**
+ * XML_SCHEMAS_TYPE_WHITESPACE_PRESERVE:
+ *
+ * a whitespace-facet value of "preserve"
+ */
+#define XML_SCHEMAS_TYPE_WHITESPACE_PRESERVE    1 << 24
+/**
+ * XML_SCHEMAS_TYPE_WHITESPACE_REPLACE:
+ *
+ * a whitespace-facet value of "replace"
+ */
+#define XML_SCHEMAS_TYPE_WHITESPACE_REPLACE    1 << 25
+/**
+ * XML_SCHEMAS_TYPE_WHITESPACE_COLLAPSE:
+ *
+ * a whitespace-facet value of "collapse"
+ */
+#define XML_SCHEMAS_TYPE_WHITESPACE_COLLAPSE    1 << 26
+/**
+ * XML_SCHEMAS_TYPE_HAS_FACETS:
+ *
+ * has facets
+ */
+#define XML_SCHEMAS_TYPE_HAS_FACETS    1 << 27
+/**
+ * XML_SCHEMAS_TYPE_NORMVALUENEEDED:
+ *
+ * indicates if the facets (pattern) need a normalized value
+ */
+#define XML_SCHEMAS_TYPE_NORMVALUENEEDED    1 << 28
+
+/**
+ * XML_SCHEMAS_TYPE_FIXUP_1:
+ *
+ * First stage of fixup was done.
+ */
+#define XML_SCHEMAS_TYPE_FIXUP_1    1 << 29
+
+/**
+ * XML_SCHEMAS_TYPE_REDEFINED:
+ *
+ * The type was redefined.
+ */
+#define XML_SCHEMAS_TYPE_REDEFINED    1 << 30
+/**
+ * XML_SCHEMAS_TYPE_REDEFINING:
+ *
+ * The type redefines an other type.
+ */
+/* #define XML_SCHEMAS_TYPE_REDEFINING    1 << 31 */
+
+/**
+ * _xmlSchemaType:
+ *
+ * Schemas type definition.
+ */
+struct _xmlSchemaType {
+    xmlSchemaTypeType type; /* The kind of type */
+    struct _xmlSchemaType *next; /* the next type if in a sequence ... */
+    const xmlChar *name;
+    const xmlChar *id ; /* Deprecated; not used */
+    const xmlChar *ref; /* Deprecated; not used */
+    const xmlChar *refNs; /* Deprecated; not used */
+    xmlSchemaAnnotPtr annot;
+    xmlSchemaTypePtr subtypes;
+    xmlSchemaAttributePtr attributes; /* Deprecated; not used */
+    xmlNodePtr node;
+    int minOccurs; /* Deprecated; not used */
+    int maxOccurs; /* Deprecated; not used */
+
+    int flags;
+    xmlSchemaContentType contentType;
+    const xmlChar *base; /* Base type's local name */
+    const xmlChar *baseNs; /* Base type's target namespace */
+    xmlSchemaTypePtr baseType; /* The base type component */
+    xmlSchemaFacetPtr facets; /* Local facets */
+    struct _xmlSchemaType *redef; /* Deprecated; not used */
+    int recurse; /* Obsolete */
+    xmlSchemaAttributeLinkPtr *attributeUses; /* Deprecated; not used */
+    xmlSchemaWildcardPtr attributeWildcard;
+    int builtInType; /* Type of built-in types. */
+    xmlSchemaTypeLinkPtr memberTypes; /* member-types if a union type. */
+    xmlSchemaFacetLinkPtr facetSet; /* All facets (incl. inherited) */
+    const xmlChar *refPrefix; /* Deprecated; not used */
+    xmlSchemaTypePtr contentTypeDef; /* Used for the simple content of complex types.
+                                        Could we use @subtypes for this? */
+    xmlRegexpPtr contModel; /* Holds the automaton of the content model */
+    const xmlChar *targetNamespace;
+    void *attrUses;
+};
+
+/*
+ * xmlSchemaElement:
+ * An element definition.
+ *
+ * xmlSchemaType, xmlSchemaFacet and xmlSchemaElement start of
+ * structures must be kept similar
+ */
+/**
+ * XML_SCHEMAS_ELEM_NILLABLE:
+ *
+ * the element is nillable
+ */
+#define XML_SCHEMAS_ELEM_NILLABLE        1 << 0
+/**
+ * XML_SCHEMAS_ELEM_GLOBAL:
+ *
+ * the element is global
+ */
+#define XML_SCHEMAS_ELEM_GLOBAL                1 << 1
+/**
+ * XML_SCHEMAS_ELEM_DEFAULT:
+ *
+ * the element has a default value
+ */
+#define XML_SCHEMAS_ELEM_DEFAULT        1 << 2
+/**
+ * XML_SCHEMAS_ELEM_FIXED:
+ *
+ * the element has a fixed value
+ */
+#define XML_SCHEMAS_ELEM_FIXED                1 << 3
+/**
+ * XML_SCHEMAS_ELEM_ABSTRACT:
+ *
+ * the element is abstract
+ */
+#define XML_SCHEMAS_ELEM_ABSTRACT        1 << 4
+/**
+ * XML_SCHEMAS_ELEM_TOPLEVEL:
+ *
+ * the element is top level
+ * obsolete: use XML_SCHEMAS_ELEM_GLOBAL instead
+ */
+#define XML_SCHEMAS_ELEM_TOPLEVEL        1 << 5
+/**
+ * XML_SCHEMAS_ELEM_REF:
+ *
+ * the element is a reference to a type
+ */
+#define XML_SCHEMAS_ELEM_REF                1 << 6
+/**
+ * XML_SCHEMAS_ELEM_NSDEFAULT:
+ *
+ * allow elements in no namespace
+ * Obsolete, not used anymore.
+ */
+#define XML_SCHEMAS_ELEM_NSDEFAULT        1 << 7
+/**
+ * XML_SCHEMAS_ELEM_INTERNAL_RESOLVED:
+ *
+ * this is set when "type", "ref", "substitutionGroup"
+ * references have been resolved.
+ */
+#define XML_SCHEMAS_ELEM_INTERNAL_RESOLVED        1 << 8
+ /**
+ * XML_SCHEMAS_ELEM_CIRCULAR:
+ *
+ * a helper flag for the search of circular references.
+ */
+#define XML_SCHEMAS_ELEM_CIRCULAR        1 << 9
+/**
+ * XML_SCHEMAS_ELEM_BLOCK_ABSENT:
+ *
+ * the "block" attribute is absent
+ */
+#define XML_SCHEMAS_ELEM_BLOCK_ABSENT        1 << 10
+/**
+ * XML_SCHEMAS_ELEM_BLOCK_EXTENSION:
+ *
+ * disallowed substitutions are absent
+ */
+#define XML_SCHEMAS_ELEM_BLOCK_EXTENSION        1 << 11
+/**
+ * XML_SCHEMAS_ELEM_BLOCK_RESTRICTION:
+ *
+ * disallowed substitutions: "restriction"
+ */
+#define XML_SCHEMAS_ELEM_BLOCK_RESTRICTION        1 << 12
+/**
+ * XML_SCHEMAS_ELEM_BLOCK_SUBSTITUTION:
+ *
+ * disallowed substitutions: "substitution"
+ */
+#define XML_SCHEMAS_ELEM_BLOCK_SUBSTITUTION        1 << 13
+/**
+ * XML_SCHEMAS_ELEM_FINAL_ABSENT:
+ *
+ * substitution group exclusions are absent
+ */
+#define XML_SCHEMAS_ELEM_FINAL_ABSENT        1 << 14
+/**
+ * XML_SCHEMAS_ELEM_FINAL_EXTENSION:
+ *
+ * substitution group exclusions: "extension"
+ */
+#define XML_SCHEMAS_ELEM_FINAL_EXTENSION        1 << 15
+/**
+ * XML_SCHEMAS_ELEM_FINAL_RESTRICTION:
+ *
+ * substitution group exclusions: "restriction"
+ */
+#define XML_SCHEMAS_ELEM_FINAL_RESTRICTION        1 << 16
+/**
+ * XML_SCHEMAS_ELEM_SUBST_GROUP_HEAD:
+ *
+ * the declaration is a substitution group head
+ */
+#define XML_SCHEMAS_ELEM_SUBST_GROUP_HEAD        1 << 17
+/**
+ * XML_SCHEMAS_ELEM_INTERNAL_CHECKED:
+ *
+ * this is set when the elem decl has been checked against
+ * all constraints
+ */
+#define XML_SCHEMAS_ELEM_INTERNAL_CHECKED        1 << 18
+
+typedef struct _xmlSchemaElement xmlSchemaElement;
+typedef xmlSchemaElement *xmlSchemaElementPtr;
+struct _xmlSchemaElement {
+    xmlSchemaTypeType type; /* The kind of type */
+    struct _xmlSchemaType *next; /* Not used? */
+    const xmlChar *name;
+    const xmlChar *id; /* Deprecated; not used */
+    const xmlChar *ref; /* Deprecated; not used */
+    const xmlChar *refNs; /* Deprecated; not used */
+    xmlSchemaAnnotPtr annot;
+    xmlSchemaTypePtr subtypes; /* the type definition */
+    xmlSchemaAttributePtr attributes;
+    xmlNodePtr node;
+    int minOccurs; /* Deprecated; not used */
+    int maxOccurs; /* Deprecated; not used */
+
+    int flags;
+    const xmlChar *targetNamespace;
+    const xmlChar *namedType;
+    const xmlChar *namedTypeNs;
+    const xmlChar *substGroup;
+    const xmlChar *substGroupNs;
+    const xmlChar *scope;
+    const xmlChar *value; /* The original value of the value constraint. */
+    struct _xmlSchemaElement *refDecl; /* This will now be used for the
+                                          substitution group affiliation */
+    xmlRegexpPtr contModel; /* Obsolete for WXS, maybe used for RelaxNG */
+    xmlSchemaContentType contentType;
+    const xmlChar *refPrefix; /* Deprecated; not used */
+    xmlSchemaValPtr defVal; /* The compiled value constraint. */
+    void *idcs; /* The identity-constraint defs */
+};
+
+/*
+ * XML_SCHEMAS_FACET_UNKNOWN:
+ *
+ * unknown facet handling
+ */
+#define XML_SCHEMAS_FACET_UNKNOWN        0
+/*
+ * XML_SCHEMAS_FACET_PRESERVE:
+ *
+ * preserve the type of the facet
+ */
+#define XML_SCHEMAS_FACET_PRESERVE        1
+/*
+ * XML_SCHEMAS_FACET_REPLACE:
+ *
+ * replace the type of the facet
+ */
+#define XML_SCHEMAS_FACET_REPLACE        2
+/*
+ * XML_SCHEMAS_FACET_COLLAPSE:
+ *
+ * collapse the types of the facet
+ */
+#define XML_SCHEMAS_FACET_COLLAPSE        3
+/**
+ * A facet definition.
+ */
+struct _xmlSchemaFacet {
+    xmlSchemaTypeType type;        /* The kind of type */
+    struct _xmlSchemaFacet *next;/* the next type if in a sequence ... */
+    const xmlChar *value; /* The original value */
+    const xmlChar *id; /* Obsolete */
+    xmlSchemaAnnotPtr annot;
+    xmlNodePtr node;
+    int fixed; /* XML_SCHEMAS_FACET_PRESERVE, etc. */
+    int whitespace;
+    xmlSchemaValPtr val; /* The compiled value */
+    xmlRegexpPtr    regexp; /* The regex for patterns */
+};
+
+/**
+ * A notation definition.
+ */
+typedef struct _xmlSchemaNotation xmlSchemaNotation;
+typedef xmlSchemaNotation *xmlSchemaNotationPtr;
+struct _xmlSchemaNotation {
+    xmlSchemaTypeType type; /* The kind of type */
+    const xmlChar *name;
+    xmlSchemaAnnotPtr annot;
+    const xmlChar *identifier;
+    const xmlChar *targetNamespace;
+};
+
+/*
+* TODO: Actually all those flags used for the schema should sit
+* on the schema parser context, since they are used only
+* during parsing an XML schema document, and not available
+* on the component level as per spec.
+*/
+/**
+ * XML_SCHEMAS_QUALIF_ELEM:
+ *
+ * Reflects elementFormDefault == qualified in
+ * an XML schema document.
+ */
+#define XML_SCHEMAS_QUALIF_ELEM                1 << 0
+/**
+ * XML_SCHEMAS_QUALIF_ATTR:
+ *
+ * Reflects attributeFormDefault == qualified in
+ * an XML schema document.
+ */
+#define XML_SCHEMAS_QUALIF_ATTR            1 << 1
+/**
+ * XML_SCHEMAS_FINAL_DEFAULT_EXTENSION:
+ *
+ * the schema has "extension" in the set of finalDefault.
+ */
+#define XML_SCHEMAS_FINAL_DEFAULT_EXTENSION        1 << 2
+/**
+ * XML_SCHEMAS_FINAL_DEFAULT_RESTRICTION:
+ *
+ * the schema has "restriction" in the set of finalDefault.
+ */
+#define XML_SCHEMAS_FINAL_DEFAULT_RESTRICTION            1 << 3
+/**
+ * XML_SCHEMAS_FINAL_DEFAULT_LIST:
+ *
+ * the schema has "list" in the set of finalDefault.
+ */
+#define XML_SCHEMAS_FINAL_DEFAULT_LIST            1 << 4
+/**
+ * XML_SCHEMAS_FINAL_DEFAULT_UNION:
+ *
+ * the schema has "union" in the set of finalDefault.
+ */
+#define XML_SCHEMAS_FINAL_DEFAULT_UNION            1 << 5
+/**
+ * XML_SCHEMAS_BLOCK_DEFAULT_EXTENSION:
+ *
+ * the schema has "extension" in the set of blockDefault.
+ */
+#define XML_SCHEMAS_BLOCK_DEFAULT_EXTENSION            1 << 6
+/**
+ * XML_SCHEMAS_BLOCK_DEFAULT_RESTRICTION:
+ *
+ * the schema has "restriction" in the set of blockDefault.
+ */
+#define XML_SCHEMAS_BLOCK_DEFAULT_RESTRICTION            1 << 7
+/**
+ * XML_SCHEMAS_BLOCK_DEFAULT_SUBSTITUTION:
+ *
+ * the schema has "substitution" in the set of blockDefault.
+ */
+#define XML_SCHEMAS_BLOCK_DEFAULT_SUBSTITUTION            1 << 8
+/**
+ * XML_SCHEMAS_INCLUDING_CONVERT_NS:
+ *
+ * the schema is currently including an other schema with
+ * no target namespace.
+ */
+#define XML_SCHEMAS_INCLUDING_CONVERT_NS            1 << 9
+/**
+ * _xmlSchema:
+ *
+ * A Schemas definition
+ */
+struct _xmlSchema {
+    const xmlChar *name; /* schema name */
+    const xmlChar *targetNamespace; /* the target namespace */
+    const xmlChar *version;
+    const xmlChar *id; /* Obsolete */
+    xmlDocPtr doc;
+    xmlSchemaAnnotPtr annot;
+    int flags;
+
+    xmlHashTablePtr typeDecl;
+    xmlHashTablePtr attrDecl;
+    xmlHashTablePtr attrgrpDecl;
+    xmlHashTablePtr elemDecl;
+    xmlHashTablePtr notaDecl;
+
+    xmlHashTablePtr schemasImports;
+
+    void *_private;        /* unused by the library for users or bindings */
+    xmlHashTablePtr groupDecl;
+    xmlDictPtr      dict;
+    void *includes;     /* the includes, this is opaque for now */
+    int preserve;        /* whether to free the document */
+    int counter; /* used to give anonymous components unique names */
+    xmlHashTablePtr idcDef; /* All identity-constraint defs. */
+    void *volatiles; /* Obsolete */
+};
+
+XMLPUBFUN void         xmlSchemaFreeType        (xmlSchemaTypePtr type);
+XMLPUBFUN void         xmlSchemaFreeWildcard(xmlSchemaWildcardPtr wildcard);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_SCHEMAS_ENABLED */
+#endif /* __XML_SCHEMA_INTERNALS_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/schematron.h

@@ -0,0 +1,143 @@
+/*
+ * Summary: XML Schematron implementation
+ * Description: interface to the XML Schematron validity checking.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_SCHEMATRON_H__
+#define __XML_SCHEMATRON_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_SCHEMATRON_ENABLED
+
+#include <libxml/xmlerror.h>
+#include <libxml/tree.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    XML_SCHEMATRON_OUT_QUIET = 1 << 0,	/* quiet no report */
+    XML_SCHEMATRON_OUT_TEXT = 1 << 1,	/* build a textual report */
+    XML_SCHEMATRON_OUT_XML = 1 << 2,	/* output SVRL */
+    XML_SCHEMATRON_OUT_ERROR = 1 << 3,  /* output via xmlStructuredErrorFunc */
+    XML_SCHEMATRON_OUT_FILE = 1 << 8,	/* output to a file descriptor */
+    XML_SCHEMATRON_OUT_BUFFER = 1 << 9,	/* output to a buffer */
+    XML_SCHEMATRON_OUT_IO = 1 << 10	/* output to I/O mechanism */
+} xmlSchematronValidOptions;
+
+/**
+ * The schemas related types are kept internal
+ */
+typedef struct _xmlSchematron xmlSchematron;
+typedef xmlSchematron *xmlSchematronPtr;
+
+/**
+ * xmlSchematronValidityErrorFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of an error callback from a Schematron validation
+ */
+typedef void (*xmlSchematronValidityErrorFunc) (void *ctx, const char *msg, ...);
+
+/**
+ * xmlSchematronValidityWarningFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of a warning callback from a Schematron validation
+ */
+typedef void (*xmlSchematronValidityWarningFunc) (void *ctx, const char *msg, ...);
+
+/**
+ * A schemas validation context
+ */
+typedef struct _xmlSchematronParserCtxt xmlSchematronParserCtxt;
+typedef xmlSchematronParserCtxt *xmlSchematronParserCtxtPtr;
+
+typedef struct _xmlSchematronValidCtxt xmlSchematronValidCtxt;
+typedef xmlSchematronValidCtxt *xmlSchematronValidCtxtPtr;
+
+/*
+ * Interfaces for parsing.
+ */
+XMLPUBFUN xmlSchematronParserCtxtPtr
+	    xmlSchematronNewParserCtxt	(const char *URL);
+XMLPUBFUN xmlSchematronParserCtxtPtr
+	    xmlSchematronNewMemParserCtxt(const char *buffer,
+					 int size);
+XMLPUBFUN xmlSchematronParserCtxtPtr
+	    xmlSchematronNewDocParserCtxt(xmlDocPtr doc);
+XMLPUBFUN void
+	    xmlSchematronFreeParserCtxt	(xmlSchematronParserCtxtPtr ctxt);
+/*****
+XMLPUBFUN void
+	    xmlSchematronSetParserErrors(xmlSchematronParserCtxtPtr ctxt,
+					 xmlSchematronValidityErrorFunc err,
+					 xmlSchematronValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN int
+		xmlSchematronGetParserErrors(xmlSchematronParserCtxtPtr ctxt,
+					xmlSchematronValidityErrorFunc * err,
+					xmlSchematronValidityWarningFunc * warn,
+					void **ctx);
+XMLPUBFUN int
+		xmlSchematronIsValid	(xmlSchematronValidCtxtPtr ctxt);
+ *****/
+XMLPUBFUN xmlSchematronPtr
+	    xmlSchematronParse		(xmlSchematronParserCtxtPtr ctxt);
+XMLPUBFUN void
+	    xmlSchematronFree		(xmlSchematronPtr schema);
+/*
+ * Interfaces for validating
+ */
+XMLPUBFUN void
+	    xmlSchematronSetValidStructuredErrors(
+	                                  xmlSchematronValidCtxtPtr ctxt,
+					  xmlStructuredErrorFunc serror,
+					  void *ctx);
+/******
+XMLPUBFUN void
+	    xmlSchematronSetValidErrors	(xmlSchematronValidCtxtPtr ctxt,
+					 xmlSchematronValidityErrorFunc err,
+					 xmlSchematronValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN int
+	    xmlSchematronGetValidErrors	(xmlSchematronValidCtxtPtr ctxt,
+					 xmlSchematronValidityErrorFunc *err,
+					 xmlSchematronValidityWarningFunc *warn,
+					 void **ctx);
+XMLPUBFUN int
+	    xmlSchematronSetValidOptions(xmlSchematronValidCtxtPtr ctxt,
+					 int options);
+XMLPUBFUN int
+	    xmlSchematronValidCtxtGetOptions(xmlSchematronValidCtxtPtr ctxt);
+XMLPUBFUN int
+            xmlSchematronValidateOneElement (xmlSchematronValidCtxtPtr ctxt,
+			                 xmlNodePtr elem);
+ *******/
+
+XMLPUBFUN xmlSchematronValidCtxtPtr
+	    xmlSchematronNewValidCtxt	(xmlSchematronPtr schema,
+					 int options);
+XMLPUBFUN void
+	    xmlSchematronFreeValidCtxt	(xmlSchematronValidCtxtPtr ctxt);
+XMLPUBFUN int
+	    xmlSchematronValidateDoc	(xmlSchematronValidCtxtPtr ctxt,
+					 xmlDocPtr instance);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_SCHEMATRON_ENABLED */
+#endif /* __XML_SCHEMATRON_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/threads.h

@@ -0,0 +1,81 @@
+/**
+ * Summary: interfaces for thread handling
+ * Description: set of generic threading related routines
+ *              should work with pthreads, Windows native or TLS threads
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_THREADS_H__
+#define __XML_THREADS_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * xmlMutex are a simple mutual exception locks.
+ */
+typedef struct _xmlMutex xmlMutex;
+typedef xmlMutex *xmlMutexPtr;
+
+/*
+ * xmlRMutex are reentrant mutual exception locks.
+ */
+typedef struct _xmlRMutex xmlRMutex;
+typedef xmlRMutex *xmlRMutexPtr;
+
+XMLPUBFUN int
+			xmlCheckThreadLocalStorage(void);
+
+XMLPUBFUN xmlMutexPtr
+			xmlNewMutex	(void);
+XMLPUBFUN void
+			xmlMutexLock	(xmlMutexPtr tok);
+XMLPUBFUN void
+			xmlMutexUnlock	(xmlMutexPtr tok);
+XMLPUBFUN void
+			xmlFreeMutex	(xmlMutexPtr tok);
+
+XMLPUBFUN xmlRMutexPtr
+			xmlNewRMutex	(void);
+XMLPUBFUN void
+			xmlRMutexLock	(xmlRMutexPtr tok);
+XMLPUBFUN void
+			xmlRMutexUnlock	(xmlRMutexPtr tok);
+XMLPUBFUN void
+			xmlFreeRMutex	(xmlRMutexPtr tok);
+
+/*
+ * Library wide APIs.
+ */
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlInitThreads	(void);
+XMLPUBFUN void
+			xmlLockLibrary	(void);
+XMLPUBFUN void
+			xmlUnlockLibrary(void);
+XML_DEPRECATED
+XMLPUBFUN void
+			xmlCleanupThreads(void);
+
+/** DOC_DISABLE */
+#if defined(LIBXML_THREAD_ENABLED) && defined(_WIN32) && \
+    defined(LIBXML_STATIC_FOR_DLL)
+int
+xmlDllMain(void *hinstDLL, unsigned long fdwReason,
+           void *lpvReserved);
+#endif
+/** DOC_ENABLE */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __XML_THREADS_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/uri.h

@@ -0,0 +1,106 @@
+/**
+ * Summary: library of generic URI related routines
+ * Description: library of generic URI related routines
+ *              Implements RFC 2396
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_URI_H__
+#define __XML_URI_H__
+
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlURI:
+ *
+ * A parsed URI reference. This is a struct containing the various fields
+ * as described in RFC 2396 but separated for further processing.
+ *
+ * Note: query is a deprecated field which is incorrectly unescaped.
+ * query_raw takes precedence over query if the former is set.
+ * See: http://mail.gnome.org/archives/xml/2007-April/thread.html#00127
+ */
+typedef struct _xmlURI xmlURI;
+typedef xmlURI *xmlURIPtr;
+struct _xmlURI {
+    char *scheme;	/* the URI scheme */
+    char *opaque;	/* opaque part */
+    char *authority;	/* the authority part */
+    char *server;	/* the server part */
+    char *user;		/* the user part */
+    int port;		/* the port number */
+    char *path;		/* the path string */
+    char *query;	/* the query string (deprecated - use with caution) */
+    char *fragment;	/* the fragment identifier */
+    int  cleanup;	/* parsing potentially unclean URI */
+    char *query_raw;	/* the query string (as it appears in the URI) */
+};
+
+/*
+ * This function is in tree.h:
+ * xmlChar *	xmlNodeGetBase	(xmlDocPtr doc,
+ *                               xmlNodePtr cur);
+ */
+XMLPUBFUN xmlURIPtr
+		xmlCreateURI		(void);
+XMLPUBFUN int
+		xmlBuildURISafe		(const xmlChar *URI,
+					 const xmlChar *base,
+					 xmlChar **out);
+XMLPUBFUN xmlChar *
+		xmlBuildURI		(const xmlChar *URI,
+					 const xmlChar *base);
+XMLPUBFUN int
+		xmlBuildRelativeURISafe	(const xmlChar *URI,
+					 const xmlChar *base,
+					 xmlChar **out);
+XMLPUBFUN xmlChar *
+		xmlBuildRelativeURI	(const xmlChar *URI,
+					 const xmlChar *base);
+XMLPUBFUN xmlURIPtr
+		xmlParseURI		(const char *str);
+XMLPUBFUN int
+		xmlParseURISafe		(const char *str,
+					 xmlURIPtr *uri);
+XMLPUBFUN xmlURIPtr
+		xmlParseURIRaw		(const char *str,
+					 int raw);
+XMLPUBFUN int
+		xmlParseURIReference	(xmlURIPtr uri,
+					 const char *str);
+XMLPUBFUN xmlChar *
+		xmlSaveUri		(xmlURIPtr uri);
+XMLPUBFUN void
+		xmlPrintURI		(FILE *stream,
+					 xmlURIPtr uri);
+XMLPUBFUN xmlChar *
+		xmlURIEscapeStr         (const xmlChar *str,
+					 const xmlChar *list);
+XMLPUBFUN char *
+		xmlURIUnescapeString	(const char *str,
+					 int len,
+					 char *target);
+XMLPUBFUN int
+		xmlNormalizeURIPath	(char *path);
+XMLPUBFUN xmlChar *
+		xmlURIEscape		(const xmlChar *str);
+XMLPUBFUN void
+		xmlFreeURI		(xmlURIPtr uri);
+XMLPUBFUN xmlChar*
+		xmlCanonicPath		(const xmlChar *path);
+XMLPUBFUN xmlChar*
+		xmlPathToURI		(const xmlChar *path);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_URI_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/valid.h

@@ -0,0 +1,482 @@
+/*
+ * Summary: The DTD validation
+ * Description: API for the DTD handling and the validity checking
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_VALID_H__
+#define __XML_VALID_H__
+
+/** DOC_DISABLE */
+#include <libxml/xmlversion.h>
+#include <libxml/xmlerror.h>
+#define XML_TREE_INTERNALS
+#include <libxml/tree.h>
+#undef XML_TREE_INTERNALS
+#include <libxml/list.h>
+#include <libxml/xmlautomata.h>
+#include <libxml/xmlregexp.h>
+/** DOC_ENABLE */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Validation state added for non-determinist content model.
+ */
+typedef struct _xmlValidState xmlValidState;
+typedef xmlValidState *xmlValidStatePtr;
+
+/**
+ * xmlValidityErrorFunc:
+ * @ctx:  usually an xmlValidCtxtPtr to a validity error context,
+ *        but comes from ctxt->userData (which normally contains such
+ *        a pointer); ctxt->userData can be changed by the user.
+ * @msg:  the string to format *printf like vararg
+ * @...:  remaining arguments to the format
+ *
+ * Callback called when a validity error is found. This is a message
+ * oriented function similar to an *printf function.
+ */
+typedef void (*xmlValidityErrorFunc) (void *ctx,
+			     const char *msg,
+			     ...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * xmlValidityWarningFunc:
+ * @ctx:  usually an xmlValidCtxtPtr to a validity error context,
+ *        but comes from ctxt->userData (which normally contains such
+ *        a pointer); ctxt->userData can be changed by the user.
+ * @msg:  the string to format *printf like vararg
+ * @...:  remaining arguments to the format
+ *
+ * Callback called when a validity warning is found. This is a message
+ * oriented function similar to an *printf function.
+ */
+typedef void (*xmlValidityWarningFunc) (void *ctx,
+			       const char *msg,
+			       ...) LIBXML_ATTR_FORMAT(2,3);
+
+/*
+ * xmlValidCtxt:
+ * An xmlValidCtxt is used for error reporting when validating.
+ */
+typedef struct _xmlValidCtxt xmlValidCtxt;
+typedef xmlValidCtxt *xmlValidCtxtPtr;
+struct _xmlValidCtxt {
+    void *userData;			/* user specific data block */
+    xmlValidityErrorFunc error;		/* the callback in case of errors */
+    xmlValidityWarningFunc warning;	/* the callback in case of warning */
+
+    /* Node analysis stack used when validating within entities */
+    xmlNodePtr         node;          /* Current parsed Node */
+    int                nodeNr;        /* Depth of the parsing stack */
+    int                nodeMax;       /* Max depth of the parsing stack */
+    xmlNodePtr        *nodeTab;       /* array of nodes */
+
+    unsigned int         flags;       /* internal flags */
+    xmlDocPtr              doc;       /* the document */
+    int                  valid;       /* temporary validity check result */
+
+    /* state state used for non-determinist content validation */
+    xmlValidState     *vstate;        /* current state */
+    int                vstateNr;      /* Depth of the validation stack */
+    int                vstateMax;     /* Max depth of the validation stack */
+    xmlValidState     *vstateTab;     /* array of validation states */
+
+#ifdef LIBXML_REGEXP_ENABLED
+    xmlAutomataPtr            am;     /* the automata */
+    xmlAutomataStatePtr    state;     /* used to build the automata */
+#else
+    void                     *am;
+    void                  *state;
+#endif
+};
+
+/*
+ * ALL notation declarations are stored in a table.
+ * There is one table per DTD.
+ */
+
+typedef struct _xmlHashTable xmlNotationTable;
+typedef xmlNotationTable *xmlNotationTablePtr;
+
+/*
+ * ALL element declarations are stored in a table.
+ * There is one table per DTD.
+ */
+
+typedef struct _xmlHashTable xmlElementTable;
+typedef xmlElementTable *xmlElementTablePtr;
+
+/*
+ * ALL attribute declarations are stored in a table.
+ * There is one table per DTD.
+ */
+
+typedef struct _xmlHashTable xmlAttributeTable;
+typedef xmlAttributeTable *xmlAttributeTablePtr;
+
+/*
+ * ALL IDs attributes are stored in a table.
+ * There is one table per document.
+ */
+
+typedef struct _xmlHashTable xmlIDTable;
+typedef xmlIDTable *xmlIDTablePtr;
+
+/*
+ * ALL Refs attributes are stored in a table.
+ * There is one table per document.
+ */
+
+typedef struct _xmlHashTable xmlRefTable;
+typedef xmlRefTable *xmlRefTablePtr;
+
+/* Notation */
+XMLPUBFUN xmlNotationPtr
+		xmlAddNotationDecl	(xmlValidCtxtPtr ctxt,
+					 xmlDtdPtr dtd,
+					 const xmlChar *name,
+					 const xmlChar *PublicID,
+					 const xmlChar *SystemID);
+XML_DEPRECATED
+XMLPUBFUN xmlNotationTablePtr
+		xmlCopyNotationTable	(xmlNotationTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeNotationTable	(xmlNotationTablePtr table);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDumpNotationDecl	(xmlBufferPtr buf,
+					 xmlNotationPtr nota);
+/* XML_DEPRECATED, still used in lxml */
+XMLPUBFUN void
+		xmlDumpNotationTable	(xmlBufferPtr buf,
+					 xmlNotationTablePtr table);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/* Element Content */
+/* the non Doc version are being deprecated */
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+		xmlNewElementContent	(const xmlChar *name,
+					 xmlElementContentType type);
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+		xmlCopyElementContent	(xmlElementContentPtr content);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeElementContent	(xmlElementContentPtr cur);
+/* the new versions with doc argument */
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+		xmlNewDocElementContent	(xmlDocPtr doc,
+					 const xmlChar *name,
+					 xmlElementContentType type);
+XML_DEPRECATED
+XMLPUBFUN xmlElementContentPtr
+		xmlCopyDocElementContent(xmlDocPtr doc,
+					 xmlElementContentPtr content);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeDocElementContent(xmlDocPtr doc,
+					 xmlElementContentPtr cur);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlSnprintfElementContent(char *buf,
+					 int size,
+	                                 xmlElementContentPtr content,
+					 int englob);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlSprintfElementContent(char *buf,
+	                                 xmlElementContentPtr content,
+					 int englob);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/* Element */
+XMLPUBFUN xmlElementPtr
+		xmlAddElementDecl	(xmlValidCtxtPtr ctxt,
+					 xmlDtdPtr dtd,
+					 const xmlChar *name,
+					 xmlElementTypeVal type,
+					 xmlElementContentPtr content);
+XML_DEPRECATED
+XMLPUBFUN xmlElementTablePtr
+		xmlCopyElementTable	(xmlElementTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeElementTable	(xmlElementTablePtr table);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDumpElementTable	(xmlBufferPtr buf,
+					 xmlElementTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDumpElementDecl	(xmlBufferPtr buf,
+					 xmlElementPtr elem);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/* Enumeration */
+XML_DEPRECATED
+XMLPUBFUN xmlEnumerationPtr
+		xmlCreateEnumeration	(const xmlChar *name);
+/* XML_DEPRECATED, needed for custom attributeDecl SAX handler */
+XMLPUBFUN void
+		xmlFreeEnumeration	(xmlEnumerationPtr cur);
+XML_DEPRECATED
+XMLPUBFUN xmlEnumerationPtr
+		xmlCopyEnumeration	(xmlEnumerationPtr cur);
+
+/* Attribute */
+XMLPUBFUN xmlAttributePtr
+		xmlAddAttributeDecl	(xmlValidCtxtPtr ctxt,
+					 xmlDtdPtr dtd,
+					 const xmlChar *elem,
+					 const xmlChar *name,
+					 const xmlChar *ns,
+					 xmlAttributeType type,
+					 xmlAttributeDefault def,
+					 const xmlChar *defaultValue,
+					 xmlEnumerationPtr tree);
+XML_DEPRECATED
+XMLPUBFUN xmlAttributeTablePtr
+		xmlCopyAttributeTable  (xmlAttributeTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeAttributeTable  (xmlAttributeTablePtr table);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDumpAttributeTable  (xmlBufferPtr buf,
+					xmlAttributeTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlDumpAttributeDecl   (xmlBufferPtr buf,
+					xmlAttributePtr attr);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/* IDs */
+XMLPUBFUN int
+		xmlAddIDSafe	       (xmlAttrPtr attr,
+					const xmlChar *value);
+XMLPUBFUN xmlIDPtr
+		xmlAddID	       (xmlValidCtxtPtr ctxt,
+					xmlDocPtr doc,
+					const xmlChar *value,
+					xmlAttrPtr attr);
+XMLPUBFUN void
+		xmlFreeIDTable	       (xmlIDTablePtr table);
+XMLPUBFUN xmlAttrPtr
+		xmlGetID	       (xmlDocPtr doc,
+					const xmlChar *ID);
+XMLPUBFUN int
+		xmlIsID		       (xmlDocPtr doc,
+					xmlNodePtr elem,
+					xmlAttrPtr attr);
+XMLPUBFUN int
+		xmlRemoveID	       (xmlDocPtr doc,
+					xmlAttrPtr attr);
+
+/* IDREFs */
+XML_DEPRECATED
+XMLPUBFUN xmlRefPtr
+		xmlAddRef	       (xmlValidCtxtPtr ctxt,
+					xmlDocPtr doc,
+					const xmlChar *value,
+					xmlAttrPtr attr);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlFreeRefTable	       (xmlRefTablePtr table);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlIsRef	       (xmlDocPtr doc,
+					xmlNodePtr elem,
+					xmlAttrPtr attr);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlRemoveRef	       (xmlDocPtr doc,
+					xmlAttrPtr attr);
+XML_DEPRECATED
+XMLPUBFUN xmlListPtr
+		xmlGetRefs	       (xmlDocPtr doc,
+					const xmlChar *ID);
+
+/**
+ * The public function calls related to validity checking.
+ */
+#ifdef LIBXML_VALID_ENABLED
+/* Allocate/Release Validation Contexts */
+XMLPUBFUN xmlValidCtxtPtr
+		xmlNewValidCtxt(void);
+XMLPUBFUN void
+		xmlFreeValidCtxt(xmlValidCtxtPtr);
+
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateRoot		(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateElementDecl	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+		                         xmlElementPtr elem);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+		xmlValidNormalizeAttributeValue(xmlDocPtr doc,
+					 xmlNodePtr elem,
+					 const xmlChar *name,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+		xmlValidCtxtNormalizeAttributeValue(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem,
+					 const xmlChar *name,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateAttributeDecl(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+		                         xmlAttributePtr attr);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateAttributeValue(xmlAttributeType type,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateNotationDecl	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+		                         xmlNotationPtr nota);
+XMLPUBFUN int
+		xmlValidateDtd		(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlDtdPtr dtd);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateDtdFinal	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc);
+XMLPUBFUN int
+		xmlValidateDocument	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc);
+XMLPUBFUN int
+		xmlValidateElement	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateOneElement	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+		                         xmlNodePtr elem);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateOneAttribute	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr	elem,
+					 xmlAttrPtr attr,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateOneNamespace	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem,
+					 const xmlChar *prefix,
+					 xmlNsPtr ns,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateDocumentFinal(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidateNotationUse	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 const xmlChar *notationName);
+#endif /* LIBXML_VALID_ENABLED */
+
+XMLPUBFUN int
+		xmlIsMixedElement	(xmlDocPtr doc,
+					 const xmlChar *name);
+XMLPUBFUN xmlAttributePtr
+		xmlGetDtdAttrDesc	(xmlDtdPtr dtd,
+					 const xmlChar *elem,
+					 const xmlChar *name);
+XMLPUBFUN xmlAttributePtr
+		xmlGetDtdQAttrDesc	(xmlDtdPtr dtd,
+					 const xmlChar *elem,
+					 const xmlChar *name,
+					 const xmlChar *prefix);
+XMLPUBFUN xmlNotationPtr
+		xmlGetDtdNotationDesc	(xmlDtdPtr dtd,
+					 const xmlChar *name);
+XMLPUBFUN xmlElementPtr
+		xmlGetDtdQElementDesc	(xmlDtdPtr dtd,
+					 const xmlChar *name,
+					 const xmlChar *prefix);
+XMLPUBFUN xmlElementPtr
+		xmlGetDtdElementDesc	(xmlDtdPtr dtd,
+					 const xmlChar *name);
+
+#ifdef LIBXML_VALID_ENABLED
+
+XMLPUBFUN int
+		xmlValidGetPotentialChildren(xmlElementContent *ctree,
+					 const xmlChar **names,
+					 int *len,
+					 int max);
+
+XMLPUBFUN int
+		xmlValidGetValidElements(xmlNode *prev,
+					 xmlNode *next,
+					 const xmlChar **names,
+					 int max);
+XMLPUBFUN int
+		xmlValidateNameValue	(const xmlChar *value);
+XMLPUBFUN int
+		xmlValidateNamesValue	(const xmlChar *value);
+XMLPUBFUN int
+		xmlValidateNmtokenValue	(const xmlChar *value);
+XMLPUBFUN int
+		xmlValidateNmtokensValue(const xmlChar *value);
+
+#ifdef LIBXML_REGEXP_ENABLED
+/*
+ * Validation based on the regexp support
+ */
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidBuildContentModel(xmlValidCtxtPtr ctxt,
+					 xmlElementPtr elem);
+
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidatePushElement	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem,
+					 const xmlChar *qname);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidatePushCData	(xmlValidCtxtPtr ctxt,
+					 const xmlChar *data,
+					 int len);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlValidatePopElement	(xmlValidCtxtPtr ctxt,
+					 xmlDocPtr doc,
+					 xmlNodePtr elem,
+					 const xmlChar *qname);
+#endif /* LIBXML_REGEXP_ENABLED */
+#endif /* LIBXML_VALID_ENABLED */
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_VALID_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xinclude.h

@@ -0,0 +1,141 @@
+/*
+ * Summary: implementation of XInclude
+ * Description: API to handle XInclude processing,
+ * implements the
+ * World Wide Web Consortium Last Call Working Draft 10 November 2003
+ * http://www.w3.org/TR/2003/WD-xinclude-20031110
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XINCLUDE_H__
+#define __XML_XINCLUDE_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/xmlerror.h>
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+
+#ifdef LIBXML_XINCLUDE_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * XINCLUDE_NS:
+ *
+ * Macro defining the Xinclude namespace: http://www.w3.org/2003/XInclude
+ */
+#define XINCLUDE_NS (const xmlChar *) "http://www.w3.org/2003/XInclude"
+/**
+ * XINCLUDE_OLD_NS:
+ *
+ * Macro defining the draft Xinclude namespace: http://www.w3.org/2001/XInclude
+ */
+#define XINCLUDE_OLD_NS (const xmlChar *) "http://www.w3.org/2001/XInclude"
+/**
+ * XINCLUDE_NODE:
+ *
+ * Macro defining "include"
+ */
+#define XINCLUDE_NODE (const xmlChar *) "include"
+/**
+ * XINCLUDE_FALLBACK:
+ *
+ * Macro defining "fallback"
+ */
+#define XINCLUDE_FALLBACK (const xmlChar *) "fallback"
+/**
+ * XINCLUDE_HREF:
+ *
+ * Macro defining "href"
+ */
+#define XINCLUDE_HREF (const xmlChar *) "href"
+/**
+ * XINCLUDE_PARSE:
+ *
+ * Macro defining "parse"
+ */
+#define XINCLUDE_PARSE (const xmlChar *) "parse"
+/**
+ * XINCLUDE_PARSE_XML:
+ *
+ * Macro defining "xml"
+ */
+#define XINCLUDE_PARSE_XML (const xmlChar *) "xml"
+/**
+ * XINCLUDE_PARSE_TEXT:
+ *
+ * Macro defining "text"
+ */
+#define XINCLUDE_PARSE_TEXT (const xmlChar *) "text"
+/**
+ * XINCLUDE_PARSE_ENCODING:
+ *
+ * Macro defining "encoding"
+ */
+#define XINCLUDE_PARSE_ENCODING (const xmlChar *) "encoding"
+/**
+ * XINCLUDE_PARSE_XPOINTER:
+ *
+ * Macro defining "xpointer"
+ */
+#define XINCLUDE_PARSE_XPOINTER (const xmlChar *) "xpointer"
+
+typedef struct _xmlXIncludeCtxt xmlXIncludeCtxt;
+typedef xmlXIncludeCtxt *xmlXIncludeCtxtPtr;
+
+/*
+ * standalone processing
+ */
+XMLPUBFUN int
+		xmlXIncludeProcess	(xmlDocPtr doc);
+XMLPUBFUN int
+		xmlXIncludeProcessFlags	(xmlDocPtr doc,
+					 int flags);
+XMLPUBFUN int
+		xmlXIncludeProcessFlagsData(xmlDocPtr doc,
+					 int flags,
+					 void *data);
+XMLPUBFUN int
+                xmlXIncludeProcessTreeFlagsData(xmlNodePtr tree,
+                                         int flags,
+                                         void *data);
+XMLPUBFUN int
+		xmlXIncludeProcessTree	(xmlNodePtr tree);
+XMLPUBFUN int
+		xmlXIncludeProcessTreeFlags(xmlNodePtr tree,
+					 int flags);
+/*
+ * contextual processing
+ */
+XMLPUBFUN xmlXIncludeCtxtPtr
+		xmlXIncludeNewContext	(xmlDocPtr doc);
+XMLPUBFUN int
+		xmlXIncludeSetFlags	(xmlXIncludeCtxtPtr ctxt,
+					 int flags);
+XMLPUBFUN void
+		xmlXIncludeSetErrorHandler(xmlXIncludeCtxtPtr ctxt,
+					 xmlStructuredErrorFunc handler,
+					 void *data);
+XMLPUBFUN void
+		xmlXIncludeSetResourceLoader(xmlXIncludeCtxtPtr ctxt,
+					 xmlResourceLoader loader,
+					 void *data);
+XMLPUBFUN int
+		xmlXIncludeGetLastError	(xmlXIncludeCtxtPtr ctxt);
+XMLPUBFUN void
+		xmlXIncludeFreeContext	(xmlXIncludeCtxtPtr ctxt);
+XMLPUBFUN int
+		xmlXIncludeProcessNode	(xmlXIncludeCtxtPtr ctxt,
+					 xmlNodePtr tree);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XINCLUDE_ENABLED */
+
+#endif /* __XML_XINCLUDE_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xlink.h

@@ -0,0 +1,193 @@
+/*
+ * Summary: unfinished XLink detection module
+ * Description: unfinished XLink detection module
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XLINK_H__
+#define __XML_XLINK_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+
+#ifdef LIBXML_XPTR_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Various defines for the various Link properties.
+ *
+ * NOTE: the link detection layer will try to resolve QName expansion
+ *       of namespaces. If "foo" is the prefix for "http://foo.com/"
+ *       then the link detection layer will expand role="foo:myrole"
+ *       to "http://foo.com/:myrole".
+ * NOTE: the link detection layer will expand URI-References found on
+ *       href attributes by using the base mechanism if found.
+ */
+typedef xmlChar *xlinkHRef;
+typedef xmlChar *xlinkRole;
+typedef xmlChar *xlinkTitle;
+
+typedef enum {
+    XLINK_TYPE_NONE = 0,
+    XLINK_TYPE_SIMPLE,
+    XLINK_TYPE_EXTENDED,
+    XLINK_TYPE_EXTENDED_SET
+} xlinkType;
+
+typedef enum {
+    XLINK_SHOW_NONE = 0,
+    XLINK_SHOW_NEW,
+    XLINK_SHOW_EMBED,
+    XLINK_SHOW_REPLACE
+} xlinkShow;
+
+typedef enum {
+    XLINK_ACTUATE_NONE = 0,
+    XLINK_ACTUATE_AUTO,
+    XLINK_ACTUATE_ONREQUEST
+} xlinkActuate;
+
+/**
+ * xlinkNodeDetectFunc:
+ * @ctx:  user data pointer
+ * @node:  the node to check
+ *
+ * This is the prototype for the link detection routine.
+ * It calls the default link detection callbacks upon link detection.
+ */
+typedef void (*xlinkNodeDetectFunc) (void *ctx, xmlNodePtr node);
+
+/*
+ * The link detection module interact with the upper layers using
+ * a set of callback registered at parsing time.
+ */
+
+/**
+ * xlinkSimpleLinkFunk:
+ * @ctx:  user data pointer
+ * @node:  the node carrying the link
+ * @href:  the target of the link
+ * @role:  the role string
+ * @title:  the link title
+ *
+ * This is the prototype for a simple link detection callback.
+ */
+typedef void
+(*xlinkSimpleLinkFunk)	(void *ctx,
+			 xmlNodePtr node,
+			 const xlinkHRef href,
+			 const xlinkRole role,
+			 const xlinkTitle title);
+
+/**
+ * xlinkExtendedLinkFunk:
+ * @ctx:  user data pointer
+ * @node:  the node carrying the link
+ * @nbLocators: the number of locators detected on the link
+ * @hrefs:  pointer to the array of locator hrefs
+ * @roles:  pointer to the array of locator roles
+ * @nbArcs: the number of arcs detected on the link
+ * @from:  pointer to the array of source roles found on the arcs
+ * @to:  pointer to the array of target roles found on the arcs
+ * @show:  array of values for the show attributes found on the arcs
+ * @actuate:  array of values for the actuate attributes found on the arcs
+ * @nbTitles: the number of titles detected on the link
+ * @title:  array of titles detected on the link
+ * @langs:  array of xml:lang values for the titles
+ *
+ * This is the prototype for a extended link detection callback.
+ */
+typedef void
+(*xlinkExtendedLinkFunk)(void *ctx,
+			 xmlNodePtr node,
+			 int nbLocators,
+			 const xlinkHRef *hrefs,
+			 const xlinkRole *roles,
+			 int nbArcs,
+			 const xlinkRole *from,
+			 const xlinkRole *to,
+			 xlinkShow *show,
+			 xlinkActuate *actuate,
+			 int nbTitles,
+			 const xlinkTitle *titles,
+			 const xmlChar **langs);
+
+/**
+ * xlinkExtendedLinkSetFunk:
+ * @ctx:  user data pointer
+ * @node:  the node carrying the link
+ * @nbLocators: the number of locators detected on the link
+ * @hrefs:  pointer to the array of locator hrefs
+ * @roles:  pointer to the array of locator roles
+ * @nbTitles: the number of titles detected on the link
+ * @title:  array of titles detected on the link
+ * @langs:  array of xml:lang values for the titles
+ *
+ * This is the prototype for a extended link set detection callback.
+ */
+typedef void
+(*xlinkExtendedLinkSetFunk)	(void *ctx,
+				 xmlNodePtr node,
+				 int nbLocators,
+				 const xlinkHRef *hrefs,
+				 const xlinkRole *roles,
+				 int nbTitles,
+				 const xlinkTitle *titles,
+				 const xmlChar **langs);
+
+/**
+ * This is the structure containing a set of Links detection callbacks.
+ *
+ * There is no default xlink callbacks, if one want to get link
+ * recognition activated, those call backs must be provided before parsing.
+ */
+typedef struct _xlinkHandler xlinkHandler;
+typedef xlinkHandler *xlinkHandlerPtr;
+struct _xlinkHandler {
+    xlinkSimpleLinkFunk simple;
+    xlinkExtendedLinkFunk extended;
+    xlinkExtendedLinkSetFunk set;
+};
+
+/*
+ * The default detection routine, can be overridden, they call the default
+ * detection callbacks.
+ */
+
+XML_DEPRECATED
+XMLPUBFUN xlinkNodeDetectFunc
+		xlinkGetDefaultDetect	(void);
+XML_DEPRECATED
+XMLPUBFUN void
+		xlinkSetDefaultDetect	(xlinkNodeDetectFunc func);
+
+/*
+ * Routines to set/get the default handlers.
+ */
+XML_DEPRECATED
+XMLPUBFUN xlinkHandlerPtr
+		xlinkGetDefaultHandler	(void);
+XML_DEPRECATED
+XMLPUBFUN void
+		xlinkSetDefaultHandler	(xlinkHandlerPtr handler);
+
+/*
+ * Link detection module itself.
+ */
+XMLPUBFUN xlinkType
+		xlinkIsLink		(xmlDocPtr doc,
+					 xmlNodePtr node);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XPTR_ENABLED */
+
+#endif /* __XML_XLINK_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlIO.h

@@ -0,0 +1,419 @@
+/*
+ * Summary: interface for the I/O interfaces used by the parser
+ * Description: interface for the I/O interfaces used by the parser
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_IO_H__
+#define __XML_IO_H__
+
+/** DOC_DISABLE */
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/encoding.h>
+#define XML_TREE_INTERNALS
+#include <libxml/tree.h>
+#undef XML_TREE_INTERNALS
+/** DOC_ENABLE */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Those are the functions and datatypes for the parser input
+ * I/O structures.
+ */
+
+/**
+ * xmlInputMatchCallback:
+ * @filename: the filename or URI
+ *
+ * Callback used in the I/O Input API to detect if the current handler
+ * can provide input functionality for this resource.
+ *
+ * Returns 1 if yes and 0 if another Input module should be used
+ */
+typedef int (*xmlInputMatchCallback) (char const *filename);
+/**
+ * xmlInputOpenCallback:
+ * @filename: the filename or URI
+ *
+ * Callback used in the I/O Input API to open the resource
+ *
+ * Returns an Input context or NULL in case or error
+ */
+typedef void * (*xmlInputOpenCallback) (char const *filename);
+/**
+ * xmlInputReadCallback:
+ * @context:  an Input context
+ * @buffer:  the buffer to store data read
+ * @len:  the length of the buffer in bytes
+ *
+ * Callback used in the I/O Input API to read the resource
+ *
+ * Returns the number of bytes read or -1 in case of error
+ */
+typedef int (*xmlInputReadCallback) (void * context, char * buffer, int len);
+/**
+ * xmlInputCloseCallback:
+ * @context:  an Input context
+ *
+ * Callback used in the I/O Input API to close the resource
+ *
+ * Returns 0 or -1 in case of error
+ */
+typedef int (*xmlInputCloseCallback) (void * context);
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/*
+ * Those are the functions and datatypes for the library output
+ * I/O structures.
+ */
+
+/**
+ * xmlOutputMatchCallback:
+ * @filename: the filename or URI
+ *
+ * Callback used in the I/O Output API to detect if the current handler
+ * can provide output functionality for this resource.
+ *
+ * Returns 1 if yes and 0 if another Output module should be used
+ */
+typedef int (*xmlOutputMatchCallback) (char const *filename);
+/**
+ * xmlOutputOpenCallback:
+ * @filename: the filename or URI
+ *
+ * Callback used in the I/O Output API to open the resource
+ *
+ * Returns an Output context or NULL in case or error
+ */
+typedef void * (*xmlOutputOpenCallback) (char const *filename);
+/**
+ * xmlOutputWriteCallback:
+ * @context:  an Output context
+ * @buffer:  the buffer of data to write
+ * @len:  the length of the buffer in bytes
+ *
+ * Callback used in the I/O Output API to write to the resource
+ *
+ * Returns the number of bytes written or -1 in case of error
+ */
+typedef int (*xmlOutputWriteCallback) (void * context, const char * buffer,
+                                       int len);
+/**
+ * xmlOutputCloseCallback:
+ * @context:  an Output context
+ *
+ * Callback used in the I/O Output API to close the resource
+ *
+ * Returns 0 or -1 in case of error
+ */
+typedef int (*xmlOutputCloseCallback) (void * context);
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/**
+ * xmlParserInputBufferCreateFilenameFunc:
+ * @URI: the URI to read from
+ * @enc: the requested source encoding
+ *
+ * Signature for the function doing the lookup for a suitable input method
+ * corresponding to an URI.
+ *
+ * Returns the new xmlParserInputBufferPtr in case of success or NULL if no
+ *         method was found.
+ */
+typedef xmlParserInputBufferPtr
+(*xmlParserInputBufferCreateFilenameFunc)(const char *URI, xmlCharEncoding enc);
+
+/**
+ * xmlOutputBufferCreateFilenameFunc:
+ * @URI: the URI to write to
+ * @enc: the requested target encoding
+ *
+ * Signature for the function doing the lookup for a suitable output method
+ * corresponding to an URI.
+ *
+ * Returns the new xmlOutputBufferPtr in case of success or NULL if no
+ *         method was found.
+ */
+typedef xmlOutputBufferPtr
+(*xmlOutputBufferCreateFilenameFunc)(const char *URI,
+        xmlCharEncodingHandlerPtr encoder, int compression);
+
+struct _xmlParserInputBuffer {
+    void*                  context;
+    xmlInputReadCallback   readcallback;
+    xmlInputCloseCallback  closecallback;
+
+    xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */
+
+    xmlBufPtr buffer;    /* Local buffer encoded in UTF-8 */
+    xmlBufPtr raw;       /* if encoder != NULL buffer for raw input */
+    int	compressed;	    /* -1=unknown, 0=not compressed, 1=compressed */
+    int error;
+    unsigned long rawconsumed;/* amount consumed from raw */
+};
+
+
+#ifdef LIBXML_OUTPUT_ENABLED
+struct _xmlOutputBuffer {
+    void*                   context;
+    xmlOutputWriteCallback  writecallback;
+    xmlOutputCloseCallback  closecallback;
+
+    xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */
+
+    xmlBufPtr buffer;    /* Local buffer encoded in UTF-8 or ISOLatin */
+    xmlBufPtr conv;      /* if encoder != NULL buffer for output */
+    int written;            /* total number of byte written */
+    int error;
+};
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/** DOC_DISABLE */
+XML_DEPRECATED
+XMLPUBFUN xmlParserInputBufferCreateFilenameFunc *
+__xmlParserInputBufferCreateFilenameValue(void);
+XML_DEPRECATED
+XMLPUBFUN xmlOutputBufferCreateFilenameFunc *
+__xmlOutputBufferCreateFilenameValue(void);
+
+#ifndef XML_GLOBALS_NO_REDEFINITION
+  #define xmlParserInputBufferCreateFilenameValue \
+    (*__xmlParserInputBufferCreateFilenameValue())
+  #define xmlOutputBufferCreateFilenameValue \
+    (*__xmlOutputBufferCreateFilenameValue())
+#endif
+/** DOC_ENABLE */
+
+/*
+ * Interfaces for input
+ */
+XMLPUBFUN void
+	xmlCleanupInputCallbacks		(void);
+
+XMLPUBFUN int
+	xmlPopInputCallbacks			(void);
+
+XMLPUBFUN void
+	xmlRegisterDefaultInputCallbacks	(void);
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlAllocParserInputBuffer		(xmlCharEncoding enc);
+
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateFilename	(const char *URI,
+                                                 xmlCharEncoding enc);
+XML_DEPRECATED
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateFile		(FILE *file,
+                                                 xmlCharEncoding enc);
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateFd		(int fd,
+	                                         xmlCharEncoding enc);
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateMem		(const char *mem, int size,
+	                                         xmlCharEncoding enc);
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateStatic	(const char *mem, int size,
+	                                         xmlCharEncoding enc);
+XMLPUBFUN xmlParserInputBufferPtr
+	xmlParserInputBufferCreateIO		(xmlInputReadCallback   ioread,
+						 xmlInputCloseCallback  ioclose,
+						 void *ioctx,
+	                                         xmlCharEncoding enc);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlParserInputBufferRead		(xmlParserInputBufferPtr in,
+						 int len);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlParserInputBufferGrow		(xmlParserInputBufferPtr in,
+						 int len);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlParserInputBufferPush		(xmlParserInputBufferPtr in,
+						 int len,
+						 const char *buf);
+XMLPUBFUN void
+	xmlFreeParserInputBuffer		(xmlParserInputBufferPtr in);
+XMLPUBFUN char *
+	xmlParserGetDirectory			(const char *filename);
+
+XMLPUBFUN int
+	xmlRegisterInputCallbacks		(xmlInputMatchCallback matchFunc,
+						 xmlInputOpenCallback openFunc,
+						 xmlInputReadCallback readFunc,
+						 xmlInputCloseCallback closeFunc);
+
+XMLPUBFUN xmlParserInputBufferPtr
+	__xmlParserInputBufferCreateFilename(const char *URI,
+						xmlCharEncoding enc);
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/*
+ * Interfaces for output
+ */
+XMLPUBFUN void
+	xmlCleanupOutputCallbacks		(void);
+XMLPUBFUN int
+	xmlPopOutputCallbacks			(void);
+XMLPUBFUN void
+	xmlRegisterDefaultOutputCallbacks(void);
+XMLPUBFUN xmlOutputBufferPtr
+	xmlAllocOutputBuffer		(xmlCharEncodingHandlerPtr encoder);
+
+XMLPUBFUN xmlOutputBufferPtr
+	xmlOutputBufferCreateFilename	(const char *URI,
+					 xmlCharEncodingHandlerPtr encoder,
+					 int compression);
+
+XMLPUBFUN xmlOutputBufferPtr
+	xmlOutputBufferCreateFile	(FILE *file,
+					 xmlCharEncodingHandlerPtr encoder);
+
+XMLPUBFUN xmlOutputBufferPtr
+	xmlOutputBufferCreateBuffer	(xmlBufferPtr buffer,
+					 xmlCharEncodingHandlerPtr encoder);
+
+XMLPUBFUN xmlOutputBufferPtr
+	xmlOutputBufferCreateFd		(int fd,
+					 xmlCharEncodingHandlerPtr encoder);
+
+XMLPUBFUN xmlOutputBufferPtr
+	xmlOutputBufferCreateIO		(xmlOutputWriteCallback   iowrite,
+					 xmlOutputCloseCallback  ioclose,
+					 void *ioctx,
+					 xmlCharEncodingHandlerPtr encoder);
+
+/* Couple of APIs to get the output without digging into the buffers */
+XMLPUBFUN const xmlChar *
+        xmlOutputBufferGetContent       (xmlOutputBufferPtr out);
+XMLPUBFUN size_t
+        xmlOutputBufferGetSize          (xmlOutputBufferPtr out);
+
+XMLPUBFUN int
+	xmlOutputBufferWrite		(xmlOutputBufferPtr out,
+					 int len,
+					 const char *buf);
+XMLPUBFUN int
+	xmlOutputBufferWriteString	(xmlOutputBufferPtr out,
+					 const char *str);
+XMLPUBFUN int
+	xmlOutputBufferWriteEscape	(xmlOutputBufferPtr out,
+					 const xmlChar *str,
+					 xmlCharEncodingOutputFunc escaping);
+
+XMLPUBFUN int
+	xmlOutputBufferFlush		(xmlOutputBufferPtr out);
+XMLPUBFUN int
+	xmlOutputBufferClose		(xmlOutputBufferPtr out);
+
+XMLPUBFUN int
+	xmlRegisterOutputCallbacks	(xmlOutputMatchCallback matchFunc,
+					 xmlOutputOpenCallback openFunc,
+					 xmlOutputWriteCallback writeFunc,
+					 xmlOutputCloseCallback closeFunc);
+
+XMLPUBFUN xmlOutputBufferPtr
+	__xmlOutputBufferCreateFilename(const char *URI,
+                              xmlCharEncodingHandlerPtr encoder,
+                              int compression);
+
+#ifdef LIBXML_HTTP_ENABLED
+/*  This function only exists if HTTP support built into the library  */
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlRegisterHTTPPostCallbacks	(void );
+#endif /* LIBXML_HTTP_ENABLED */
+
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+XML_DEPRECATED
+XMLPUBFUN xmlParserInputPtr
+	xmlCheckHTTPInput		(xmlParserCtxtPtr ctxt,
+					 xmlParserInputPtr ret);
+
+/*
+ * A predefined entity loader disabling network accesses
+ */
+XMLPUBFUN xmlParserInputPtr
+	xmlNoNetExternalEntityLoader	(const char *URL,
+					 const char *ID,
+					 xmlParserCtxtPtr ctxt);
+
+XML_DEPRECATED
+XMLPUBFUN xmlChar *
+	xmlNormalizeWindowsPath		(const xmlChar *path);
+
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlCheckFilename		(const char *path);
+/**
+ * Default 'file://' protocol callbacks
+ */
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlFileMatch			(const char *filename);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlFileOpen			(const char *filename);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlFileRead			(void * context,
+					 char * buffer,
+					 int len);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlFileClose			(void * context);
+
+/**
+ * Default 'http://' protocol callbacks
+ */
+#ifdef LIBXML_HTTP_ENABLED
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlIOHTTPMatch			(const char *filename);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlIOHTTPOpen			(const char *filename);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlIOHTTPOpenW			(const char * post_uri,
+					 int   compression );
+#endif /* LIBXML_OUTPUT_ENABLED */
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlIOHTTPRead			(void * context,
+					 char * buffer,
+					 int len);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlIOHTTPClose			(void * context);
+#endif /* LIBXML_HTTP_ENABLED */
+
+XMLPUBFUN xmlParserInputBufferCreateFilenameFunc
+	xmlParserInputBufferCreateFilenameDefault(
+		xmlParserInputBufferCreateFilenameFunc func);
+XMLPUBFUN xmlOutputBufferCreateFilenameFunc
+	xmlOutputBufferCreateFilenameDefault(
+		xmlOutputBufferCreateFilenameFunc func);
+XML_DEPRECATED
+XMLPUBFUN xmlOutputBufferCreateFilenameFunc
+	xmlThrDefOutputBufferCreateFilenameDefault(
+		xmlOutputBufferCreateFilenameFunc func);
+XML_DEPRECATED
+XMLPUBFUN xmlParserInputBufferCreateFilenameFunc
+	xmlThrDefParserInputBufferCreateFilenameDefault(
+		xmlParserInputBufferCreateFilenameFunc func);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_IO_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlautomata.h

@@ -0,0 +1,163 @@
+/*
+ * Summary: API to build regexp automata
+ * Description: the API to build regexp automata
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_AUTOMATA_H__
+#define __XML_AUTOMATA_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_REGEXP_ENABLED
+
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlAutomataPtr:
+ *
+ * A libxml automata description, It can be compiled into a regexp
+ */
+typedef struct _xmlAutomata xmlAutomata;
+typedef xmlAutomata *xmlAutomataPtr;
+
+/**
+ * xmlAutomataStatePtr:
+ *
+ * A state int the automata description,
+ */
+typedef struct _xmlAutomataState xmlAutomataState;
+typedef xmlAutomataState *xmlAutomataStatePtr;
+
+/*
+ * Building API
+ */
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataPtr
+		    xmlNewAutomata		(void);
+XML_DEPRECATED
+XMLPUBFUN void
+		    xmlFreeAutomata		(xmlAutomataPtr am);
+
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataGetInitState	(xmlAutomataPtr am);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlAutomataSetFinalState	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr state);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewState		(xmlAutomataPtr am);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewTransition	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewTransition2	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 const xmlChar *token2,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+                    xmlAutomataNewNegTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 const xmlChar *token2,
+						 void *data);
+
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewCountTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 int min,
+						 int max,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewCountTrans2	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 const xmlChar *token2,
+						 int min,
+						 int max,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewOnceTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 int min,
+						 int max,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewOnceTrans2	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 const xmlChar *token,
+						 const xmlChar *token2,
+						 int min,
+						 int max,
+						 void *data);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewAllTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 int lax);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewEpsilon	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewCountedTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 int counter);
+XML_DEPRECATED
+XMLPUBFUN xmlAutomataStatePtr
+		    xmlAutomataNewCounterTrans	(xmlAutomataPtr am,
+						 xmlAutomataStatePtr from,
+						 xmlAutomataStatePtr to,
+						 int counter);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlAutomataNewCounter	(xmlAutomataPtr am,
+						 int min,
+						 int max);
+
+XML_DEPRECATED
+XMLPUBFUN struct _xmlRegexp *
+		    xmlAutomataCompile		(xmlAutomataPtr am);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlAutomataIsDeterminist	(xmlAutomataPtr am);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_REGEXP_ENABLED */
+
+#endif /* __XML_AUTOMATA_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlerror.h

@@ -0,0 +1,962 @@
+/*
+ * Summary: error handling
+ * Description: the API used to report errors
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_ERROR_H__
+#define __XML_ERROR_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Backward compatibility
+ */
+#define initGenericErrorDefaultFunc(h) \
+    xmlSetGenericErrorFunc(NULL, (h) ? *((xmlGenericErrorFunc *) (h)) : NULL)
+
+/**
+ * xmlErrorLevel:
+ *
+ * Indicates the level of an error
+ */
+typedef enum {
+    XML_ERR_NONE = 0,
+    XML_ERR_WARNING = 1,	/* A simple warning */
+    XML_ERR_ERROR = 2,		/* A recoverable error */
+    XML_ERR_FATAL = 3		/* A fatal error */
+} xmlErrorLevel;
+
+/**
+ * xmlErrorDomain:
+ *
+ * Indicates where an error may have come from
+ */
+typedef enum {
+    XML_FROM_NONE = 0,
+    XML_FROM_PARSER,	/* The XML parser */
+    XML_FROM_TREE,	/* The tree module */
+    XML_FROM_NAMESPACE,	/* The XML Namespace module */
+    XML_FROM_DTD,	/* The XML DTD validation with parser context*/
+    XML_FROM_HTML,	/* The HTML parser */
+    XML_FROM_MEMORY,	/* The memory allocator */
+    XML_FROM_OUTPUT,	/* The serialization code */
+    XML_FROM_IO,	/* The Input/Output stack */
+    XML_FROM_FTP,	/* The FTP module */
+    XML_FROM_HTTP,	/* The HTTP module */
+    XML_FROM_XINCLUDE,	/* The XInclude processing */
+    XML_FROM_XPATH,	/* The XPath module */
+    XML_FROM_XPOINTER,	/* The XPointer module */
+    XML_FROM_REGEXP,	/* The regular expressions module */
+    XML_FROM_DATATYPE,	/* The W3C XML Schemas Datatype module */
+    XML_FROM_SCHEMASP,	/* The W3C XML Schemas parser module */
+    XML_FROM_SCHEMASV,	/* The W3C XML Schemas validation module */
+    XML_FROM_RELAXNGP,	/* The Relax-NG parser module */
+    XML_FROM_RELAXNGV,	/* The Relax-NG validator module */
+    XML_FROM_CATALOG,	/* The Catalog module */
+    XML_FROM_C14N,	/* The Canonicalization module */
+    XML_FROM_XSLT,	/* The XSLT engine from libxslt */
+    XML_FROM_VALID,	/* The XML DTD validation with valid context */
+    XML_FROM_CHECK,	/* The error checking module */
+    XML_FROM_WRITER,	/* The xmlwriter module */
+    XML_FROM_MODULE,	/* The dynamically loaded module module*/
+    XML_FROM_I18N,	/* The module handling character conversion */
+    XML_FROM_SCHEMATRONV,/* The Schematron validator module */
+    XML_FROM_BUFFER,    /* The buffers module */
+    XML_FROM_URI        /* The URI module */
+} xmlErrorDomain;
+
+/**
+ * xmlError:
+ *
+ * An XML Error instance.
+ */
+
+typedef struct _xmlError xmlError;
+typedef xmlError *xmlErrorPtr;
+struct _xmlError {
+    int		domain;	/* What part of the library raised this error */
+    int		code;	/* The error code, e.g. an xmlParserError */
+    char       *message;/* human-readable informative error message */
+    xmlErrorLevel level;/* how consequent is the error */
+    char       *file;	/* the filename */
+    int		line;	/* the line number if available */
+    char       *str1;	/* extra string information */
+    char       *str2;	/* extra string information */
+    char       *str3;	/* extra string information */
+    int		int1;	/* extra number information */
+    int		int2;	/* error column # or 0 if N/A (todo: rename field when we would brk ABI) */
+    void       *ctxt;   /* the parser context if available */
+    void       *node;   /* the node in the tree */
+};
+
+/**
+ * xmlParserError:
+ *
+ * This is an error that the XML (or HTML) parser can generate
+ */
+typedef enum {
+    XML_ERR_OK = 0,
+    XML_ERR_INTERNAL_ERROR, /* 1 */
+    XML_ERR_NO_MEMORY, /* 2 */
+    XML_ERR_DOCUMENT_START, /* 3 */
+    XML_ERR_DOCUMENT_EMPTY, /* 4 */
+    XML_ERR_DOCUMENT_END, /* 5 */
+    XML_ERR_INVALID_HEX_CHARREF, /* 6 */
+    XML_ERR_INVALID_DEC_CHARREF, /* 7 */
+    XML_ERR_INVALID_CHARREF, /* 8 */
+    XML_ERR_INVALID_CHAR, /* 9 */
+    XML_ERR_CHARREF_AT_EOF, /* 10 */
+    XML_ERR_CHARREF_IN_PROLOG, /* 11 */
+    XML_ERR_CHARREF_IN_EPILOG, /* 12 */
+    XML_ERR_CHARREF_IN_DTD, /* 13 */
+    XML_ERR_ENTITYREF_AT_EOF, /* 14 */
+    XML_ERR_ENTITYREF_IN_PROLOG, /* 15 */
+    XML_ERR_ENTITYREF_IN_EPILOG, /* 16 */
+    XML_ERR_ENTITYREF_IN_DTD, /* 17 */
+    XML_ERR_PEREF_AT_EOF, /* 18 */
+    XML_ERR_PEREF_IN_PROLOG, /* 19 */
+    XML_ERR_PEREF_IN_EPILOG, /* 20 */
+    XML_ERR_PEREF_IN_INT_SUBSET, /* 21 */
+    XML_ERR_ENTITYREF_NO_NAME, /* 22 */
+    XML_ERR_ENTITYREF_SEMICOL_MISSING, /* 23 */
+    XML_ERR_PEREF_NO_NAME, /* 24 */
+    XML_ERR_PEREF_SEMICOL_MISSING, /* 25 */
+    XML_ERR_UNDECLARED_ENTITY, /* 26 */
+    XML_WAR_UNDECLARED_ENTITY, /* 27 */
+    XML_ERR_UNPARSED_ENTITY, /* 28 */
+    XML_ERR_ENTITY_IS_EXTERNAL, /* 29 */
+    XML_ERR_ENTITY_IS_PARAMETER, /* 30 */
+    XML_ERR_UNKNOWN_ENCODING, /* 31 */
+    XML_ERR_UNSUPPORTED_ENCODING, /* 32 */
+    XML_ERR_STRING_NOT_STARTED, /* 33 */
+    XML_ERR_STRING_NOT_CLOSED, /* 34 */
+    XML_ERR_NS_DECL_ERROR, /* 35 */
+    XML_ERR_ENTITY_NOT_STARTED, /* 36 */
+    XML_ERR_ENTITY_NOT_FINISHED, /* 37 */
+    XML_ERR_LT_IN_ATTRIBUTE, /* 38 */
+    XML_ERR_ATTRIBUTE_NOT_STARTED, /* 39 */
+    XML_ERR_ATTRIBUTE_NOT_FINISHED, /* 40 */
+    XML_ERR_ATTRIBUTE_WITHOUT_VALUE, /* 41 */
+    XML_ERR_ATTRIBUTE_REDEFINED, /* 42 */
+    XML_ERR_LITERAL_NOT_STARTED, /* 43 */
+    XML_ERR_LITERAL_NOT_FINISHED, /* 44 */
+    XML_ERR_COMMENT_NOT_FINISHED, /* 45 */
+    XML_ERR_PI_NOT_STARTED, /* 46 */
+    XML_ERR_PI_NOT_FINISHED, /* 47 */
+    XML_ERR_NOTATION_NOT_STARTED, /* 48 */
+    XML_ERR_NOTATION_NOT_FINISHED, /* 49 */
+    XML_ERR_ATTLIST_NOT_STARTED, /* 50 */
+    XML_ERR_ATTLIST_NOT_FINISHED, /* 51 */
+    XML_ERR_MIXED_NOT_STARTED, /* 52 */
+    XML_ERR_MIXED_NOT_FINISHED, /* 53 */
+    XML_ERR_ELEMCONTENT_NOT_STARTED, /* 54 */
+    XML_ERR_ELEMCONTENT_NOT_FINISHED, /* 55 */
+    XML_ERR_XMLDECL_NOT_STARTED, /* 56 */
+    XML_ERR_XMLDECL_NOT_FINISHED, /* 57 */
+    XML_ERR_CONDSEC_NOT_STARTED, /* 58 */
+    XML_ERR_CONDSEC_NOT_FINISHED, /* 59 */
+    XML_ERR_EXT_SUBSET_NOT_FINISHED, /* 60 */
+    XML_ERR_DOCTYPE_NOT_FINISHED, /* 61 */
+    XML_ERR_MISPLACED_CDATA_END, /* 62 */
+    XML_ERR_CDATA_NOT_FINISHED, /* 63 */
+    XML_ERR_RESERVED_XML_NAME, /* 64 */
+    XML_ERR_SPACE_REQUIRED, /* 65 */
+    XML_ERR_SEPARATOR_REQUIRED, /* 66 */
+    XML_ERR_NMTOKEN_REQUIRED, /* 67 */
+    XML_ERR_NAME_REQUIRED, /* 68 */
+    XML_ERR_PCDATA_REQUIRED, /* 69 */
+    XML_ERR_URI_REQUIRED, /* 70 */
+    XML_ERR_PUBID_REQUIRED, /* 71 */
+    XML_ERR_LT_REQUIRED, /* 72 */
+    XML_ERR_GT_REQUIRED, /* 73 */
+    XML_ERR_LTSLASH_REQUIRED, /* 74 */
+    XML_ERR_EQUAL_REQUIRED, /* 75 */
+    XML_ERR_TAG_NAME_MISMATCH, /* 76 */
+    XML_ERR_TAG_NOT_FINISHED, /* 77 */
+    XML_ERR_STANDALONE_VALUE, /* 78 */
+    XML_ERR_ENCODING_NAME, /* 79 */
+    XML_ERR_HYPHEN_IN_COMMENT, /* 80 */
+    XML_ERR_INVALID_ENCODING, /* 81 */
+    XML_ERR_EXT_ENTITY_STANDALONE, /* 82 */
+    XML_ERR_CONDSEC_INVALID, /* 83 */
+    XML_ERR_VALUE_REQUIRED, /* 84 */
+    XML_ERR_NOT_WELL_BALANCED, /* 85 */
+    XML_ERR_EXTRA_CONTENT, /* 86 */
+    XML_ERR_ENTITY_CHAR_ERROR, /* 87 */
+    XML_ERR_ENTITY_PE_INTERNAL, /* 88 */
+    XML_ERR_ENTITY_LOOP, /* 89 */
+    XML_ERR_ENTITY_BOUNDARY, /* 90 */
+    XML_ERR_INVALID_URI, /* 91 */
+    XML_ERR_URI_FRAGMENT, /* 92 */
+    XML_WAR_CATALOG_PI, /* 93 */
+    XML_ERR_NO_DTD, /* 94 */
+    XML_ERR_CONDSEC_INVALID_KEYWORD, /* 95 */
+    XML_ERR_VERSION_MISSING, /* 96 */
+    XML_WAR_UNKNOWN_VERSION, /* 97 */
+    XML_WAR_LANG_VALUE, /* 98 */
+    XML_WAR_NS_URI, /* 99 */
+    XML_WAR_NS_URI_RELATIVE, /* 100 */
+    XML_ERR_MISSING_ENCODING, /* 101 */
+    XML_WAR_SPACE_VALUE, /* 102 */
+    XML_ERR_NOT_STANDALONE, /* 103 */
+    XML_ERR_ENTITY_PROCESSING, /* 104 */
+    XML_ERR_NOTATION_PROCESSING, /* 105 */
+    XML_WAR_NS_COLUMN, /* 106 */
+    XML_WAR_ENTITY_REDEFINED, /* 107 */
+    XML_ERR_UNKNOWN_VERSION, /* 108 */
+    XML_ERR_VERSION_MISMATCH, /* 109 */
+    XML_ERR_NAME_TOO_LONG, /* 110 */
+    XML_ERR_USER_STOP, /* 111 */
+    XML_ERR_COMMENT_ABRUPTLY_ENDED, /* 112 */
+    XML_WAR_ENCODING_MISMATCH, /* 113 */
+    XML_ERR_RESOURCE_LIMIT, /* 114 */
+    XML_ERR_ARGUMENT, /* 115 */
+    XML_ERR_SYSTEM, /* 116 */
+    XML_ERR_REDECL_PREDEF_ENTITY, /* 117 */
+    XML_ERR_INT_SUBSET_NOT_FINISHED, /* 118 */
+    XML_NS_ERR_XML_NAMESPACE = 200,
+    XML_NS_ERR_UNDEFINED_NAMESPACE, /* 201 */
+    XML_NS_ERR_QNAME, /* 202 */
+    XML_NS_ERR_ATTRIBUTE_REDEFINED, /* 203 */
+    XML_NS_ERR_EMPTY, /* 204 */
+    XML_NS_ERR_COLON, /* 205 */
+    XML_DTD_ATTRIBUTE_DEFAULT = 500,
+    XML_DTD_ATTRIBUTE_REDEFINED, /* 501 */
+    XML_DTD_ATTRIBUTE_VALUE, /* 502 */
+    XML_DTD_CONTENT_ERROR, /* 503 */
+    XML_DTD_CONTENT_MODEL, /* 504 */
+    XML_DTD_CONTENT_NOT_DETERMINIST, /* 505 */
+    XML_DTD_DIFFERENT_PREFIX, /* 506 */
+    XML_DTD_ELEM_DEFAULT_NAMESPACE, /* 507 */
+    XML_DTD_ELEM_NAMESPACE, /* 508 */
+    XML_DTD_ELEM_REDEFINED, /* 509 */
+    XML_DTD_EMPTY_NOTATION, /* 510 */
+    XML_DTD_ENTITY_TYPE, /* 511 */
+    XML_DTD_ID_FIXED, /* 512 */
+    XML_DTD_ID_REDEFINED, /* 513 */
+    XML_DTD_ID_SUBSET, /* 514 */
+    XML_DTD_INVALID_CHILD, /* 515 */
+    XML_DTD_INVALID_DEFAULT, /* 516 */
+    XML_DTD_LOAD_ERROR, /* 517 */
+    XML_DTD_MISSING_ATTRIBUTE, /* 518 */
+    XML_DTD_MIXED_CORRUPT, /* 519 */
+    XML_DTD_MULTIPLE_ID, /* 520 */
+    XML_DTD_NO_DOC, /* 521 */
+    XML_DTD_NO_DTD, /* 522 */
+    XML_DTD_NO_ELEM_NAME, /* 523 */
+    XML_DTD_NO_PREFIX, /* 524 */
+    XML_DTD_NO_ROOT, /* 525 */
+    XML_DTD_NOTATION_REDEFINED, /* 526 */
+    XML_DTD_NOTATION_VALUE, /* 527 */
+    XML_DTD_NOT_EMPTY, /* 528 */
+    XML_DTD_NOT_PCDATA, /* 529 */
+    XML_DTD_NOT_STANDALONE, /* 530 */
+    XML_DTD_ROOT_NAME, /* 531 */
+    XML_DTD_STANDALONE_WHITE_SPACE, /* 532 */
+    XML_DTD_UNKNOWN_ATTRIBUTE, /* 533 */
+    XML_DTD_UNKNOWN_ELEM, /* 534 */
+    XML_DTD_UNKNOWN_ENTITY, /* 535 */
+    XML_DTD_UNKNOWN_ID, /* 536 */
+    XML_DTD_UNKNOWN_NOTATION, /* 537 */
+    XML_DTD_STANDALONE_DEFAULTED, /* 538 */
+    XML_DTD_XMLID_VALUE, /* 539 */
+    XML_DTD_XMLID_TYPE, /* 540 */
+    XML_DTD_DUP_TOKEN, /* 541 */
+    XML_HTML_STRUCURE_ERROR = 800,
+    XML_HTML_UNKNOWN_TAG, /* 801 */
+    XML_HTML_INCORRECTLY_OPENED_COMMENT, /* 802 */
+    XML_RNGP_ANYNAME_ATTR_ANCESTOR = 1000,
+    XML_RNGP_ATTR_CONFLICT, /* 1001 */
+    XML_RNGP_ATTRIBUTE_CHILDREN, /* 1002 */
+    XML_RNGP_ATTRIBUTE_CONTENT, /* 1003 */
+    XML_RNGP_ATTRIBUTE_EMPTY, /* 1004 */
+    XML_RNGP_ATTRIBUTE_NOOP, /* 1005 */
+    XML_RNGP_CHOICE_CONTENT, /* 1006 */
+    XML_RNGP_CHOICE_EMPTY, /* 1007 */
+    XML_RNGP_CREATE_FAILURE, /* 1008 */
+    XML_RNGP_DATA_CONTENT, /* 1009 */
+    XML_RNGP_DEF_CHOICE_AND_INTERLEAVE, /* 1010 */
+    XML_RNGP_DEFINE_CREATE_FAILED, /* 1011 */
+    XML_RNGP_DEFINE_EMPTY, /* 1012 */
+    XML_RNGP_DEFINE_MISSING, /* 1013 */
+    XML_RNGP_DEFINE_NAME_MISSING, /* 1014 */
+    XML_RNGP_ELEM_CONTENT_EMPTY, /* 1015 */
+    XML_RNGP_ELEM_CONTENT_ERROR, /* 1016 */
+    XML_RNGP_ELEMENT_EMPTY, /* 1017 */
+    XML_RNGP_ELEMENT_CONTENT, /* 1018 */
+    XML_RNGP_ELEMENT_NAME, /* 1019 */
+    XML_RNGP_ELEMENT_NO_CONTENT, /* 1020 */
+    XML_RNGP_ELEM_TEXT_CONFLICT, /* 1021 */
+    XML_RNGP_EMPTY, /* 1022 */
+    XML_RNGP_EMPTY_CONSTRUCT, /* 1023 */
+    XML_RNGP_EMPTY_CONTENT, /* 1024 */
+    XML_RNGP_EMPTY_NOT_EMPTY, /* 1025 */
+    XML_RNGP_ERROR_TYPE_LIB, /* 1026 */
+    XML_RNGP_EXCEPT_EMPTY, /* 1027 */
+    XML_RNGP_EXCEPT_MISSING, /* 1028 */
+    XML_RNGP_EXCEPT_MULTIPLE, /* 1029 */
+    XML_RNGP_EXCEPT_NO_CONTENT, /* 1030 */
+    XML_RNGP_EXTERNALREF_EMTPY, /* 1031 */
+    XML_RNGP_EXTERNAL_REF_FAILURE, /* 1032 */
+    XML_RNGP_EXTERNALREF_RECURSE, /* 1033 */
+    XML_RNGP_FORBIDDEN_ATTRIBUTE, /* 1034 */
+    XML_RNGP_FOREIGN_ELEMENT, /* 1035 */
+    XML_RNGP_GRAMMAR_CONTENT, /* 1036 */
+    XML_RNGP_GRAMMAR_EMPTY, /* 1037 */
+    XML_RNGP_GRAMMAR_MISSING, /* 1038 */
+    XML_RNGP_GRAMMAR_NO_START, /* 1039 */
+    XML_RNGP_GROUP_ATTR_CONFLICT, /* 1040 */
+    XML_RNGP_HREF_ERROR, /* 1041 */
+    XML_RNGP_INCLUDE_EMPTY, /* 1042 */
+    XML_RNGP_INCLUDE_FAILURE, /* 1043 */
+    XML_RNGP_INCLUDE_RECURSE, /* 1044 */
+    XML_RNGP_INTERLEAVE_ADD, /* 1045 */
+    XML_RNGP_INTERLEAVE_CREATE_FAILED, /* 1046 */
+    XML_RNGP_INTERLEAVE_EMPTY, /* 1047 */
+    XML_RNGP_INTERLEAVE_NO_CONTENT, /* 1048 */
+    XML_RNGP_INVALID_DEFINE_NAME, /* 1049 */
+    XML_RNGP_INVALID_URI, /* 1050 */
+    XML_RNGP_INVALID_VALUE, /* 1051 */
+    XML_RNGP_MISSING_HREF, /* 1052 */
+    XML_RNGP_NAME_MISSING, /* 1053 */
+    XML_RNGP_NEED_COMBINE, /* 1054 */
+    XML_RNGP_NOTALLOWED_NOT_EMPTY, /* 1055 */
+    XML_RNGP_NSNAME_ATTR_ANCESTOR, /* 1056 */
+    XML_RNGP_NSNAME_NO_NS, /* 1057 */
+    XML_RNGP_PARAM_FORBIDDEN, /* 1058 */
+    XML_RNGP_PARAM_NAME_MISSING, /* 1059 */
+    XML_RNGP_PARENTREF_CREATE_FAILED, /* 1060 */
+    XML_RNGP_PARENTREF_NAME_INVALID, /* 1061 */
+    XML_RNGP_PARENTREF_NO_NAME, /* 1062 */
+    XML_RNGP_PARENTREF_NO_PARENT, /* 1063 */
+    XML_RNGP_PARENTREF_NOT_EMPTY, /* 1064 */
+    XML_RNGP_PARSE_ERROR, /* 1065 */
+    XML_RNGP_PAT_ANYNAME_EXCEPT_ANYNAME, /* 1066 */
+    XML_RNGP_PAT_ATTR_ATTR, /* 1067 */
+    XML_RNGP_PAT_ATTR_ELEM, /* 1068 */
+    XML_RNGP_PAT_DATA_EXCEPT_ATTR, /* 1069 */
+    XML_RNGP_PAT_DATA_EXCEPT_ELEM, /* 1070 */
+    XML_RNGP_PAT_DATA_EXCEPT_EMPTY, /* 1071 */
+    XML_RNGP_PAT_DATA_EXCEPT_GROUP, /* 1072 */
+    XML_RNGP_PAT_DATA_EXCEPT_INTERLEAVE, /* 1073 */
+    XML_RNGP_PAT_DATA_EXCEPT_LIST, /* 1074 */
+    XML_RNGP_PAT_DATA_EXCEPT_ONEMORE, /* 1075 */
+    XML_RNGP_PAT_DATA_EXCEPT_REF, /* 1076 */
+    XML_RNGP_PAT_DATA_EXCEPT_TEXT, /* 1077 */
+    XML_RNGP_PAT_LIST_ATTR, /* 1078 */
+    XML_RNGP_PAT_LIST_ELEM, /* 1079 */
+    XML_RNGP_PAT_LIST_INTERLEAVE, /* 1080 */
+    XML_RNGP_PAT_LIST_LIST, /* 1081 */
+    XML_RNGP_PAT_LIST_REF, /* 1082 */
+    XML_RNGP_PAT_LIST_TEXT, /* 1083 */
+    XML_RNGP_PAT_NSNAME_EXCEPT_ANYNAME, /* 1084 */
+    XML_RNGP_PAT_NSNAME_EXCEPT_NSNAME, /* 1085 */
+    XML_RNGP_PAT_ONEMORE_GROUP_ATTR, /* 1086 */
+    XML_RNGP_PAT_ONEMORE_INTERLEAVE_ATTR, /* 1087 */
+    XML_RNGP_PAT_START_ATTR, /* 1088 */
+    XML_RNGP_PAT_START_DATA, /* 1089 */
+    XML_RNGP_PAT_START_EMPTY, /* 1090 */
+    XML_RNGP_PAT_START_GROUP, /* 1091 */
+    XML_RNGP_PAT_START_INTERLEAVE, /* 1092 */
+    XML_RNGP_PAT_START_LIST, /* 1093 */
+    XML_RNGP_PAT_START_ONEMORE, /* 1094 */
+    XML_RNGP_PAT_START_TEXT, /* 1095 */
+    XML_RNGP_PAT_START_VALUE, /* 1096 */
+    XML_RNGP_PREFIX_UNDEFINED, /* 1097 */
+    XML_RNGP_REF_CREATE_FAILED, /* 1098 */
+    XML_RNGP_REF_CYCLE, /* 1099 */
+    XML_RNGP_REF_NAME_INVALID, /* 1100 */
+    XML_RNGP_REF_NO_DEF, /* 1101 */
+    XML_RNGP_REF_NO_NAME, /* 1102 */
+    XML_RNGP_REF_NOT_EMPTY, /* 1103 */
+    XML_RNGP_START_CHOICE_AND_INTERLEAVE, /* 1104 */
+    XML_RNGP_START_CONTENT, /* 1105 */
+    XML_RNGP_START_EMPTY, /* 1106 */
+    XML_RNGP_START_MISSING, /* 1107 */
+    XML_RNGP_TEXT_EXPECTED, /* 1108 */
+    XML_RNGP_TEXT_HAS_CHILD, /* 1109 */
+    XML_RNGP_TYPE_MISSING, /* 1110 */
+    XML_RNGP_TYPE_NOT_FOUND, /* 1111 */
+    XML_RNGP_TYPE_VALUE, /* 1112 */
+    XML_RNGP_UNKNOWN_ATTRIBUTE, /* 1113 */
+    XML_RNGP_UNKNOWN_COMBINE, /* 1114 */
+    XML_RNGP_UNKNOWN_CONSTRUCT, /* 1115 */
+    XML_RNGP_UNKNOWN_TYPE_LIB, /* 1116 */
+    XML_RNGP_URI_FRAGMENT, /* 1117 */
+    XML_RNGP_URI_NOT_ABSOLUTE, /* 1118 */
+    XML_RNGP_VALUE_EMPTY, /* 1119 */
+    XML_RNGP_VALUE_NO_CONTENT, /* 1120 */
+    XML_RNGP_XMLNS_NAME, /* 1121 */
+    XML_RNGP_XML_NS, /* 1122 */
+    XML_XPATH_EXPRESSION_OK = 1200,
+    XML_XPATH_NUMBER_ERROR, /* 1201 */
+    XML_XPATH_UNFINISHED_LITERAL_ERROR, /* 1202 */
+    XML_XPATH_START_LITERAL_ERROR, /* 1203 */
+    XML_XPATH_VARIABLE_REF_ERROR, /* 1204 */
+    XML_XPATH_UNDEF_VARIABLE_ERROR, /* 1205 */
+    XML_XPATH_INVALID_PREDICATE_ERROR, /* 1206 */
+    XML_XPATH_EXPR_ERROR, /* 1207 */
+    XML_XPATH_UNCLOSED_ERROR, /* 1208 */
+    XML_XPATH_UNKNOWN_FUNC_ERROR, /* 1209 */
+    XML_XPATH_INVALID_OPERAND, /* 1210 */
+    XML_XPATH_INVALID_TYPE, /* 1211 */
+    XML_XPATH_INVALID_ARITY, /* 1212 */
+    XML_XPATH_INVALID_CTXT_SIZE, /* 1213 */
+    XML_XPATH_INVALID_CTXT_POSITION, /* 1214 */
+    XML_XPATH_MEMORY_ERROR, /* 1215 */
+    XML_XPTR_SYNTAX_ERROR, /* 1216 */
+    XML_XPTR_RESOURCE_ERROR, /* 1217 */
+    XML_XPTR_SUB_RESOURCE_ERROR, /* 1218 */
+    XML_XPATH_UNDEF_PREFIX_ERROR, /* 1219 */
+    XML_XPATH_ENCODING_ERROR, /* 1220 */
+    XML_XPATH_INVALID_CHAR_ERROR, /* 1221 */
+    XML_TREE_INVALID_HEX = 1300,
+    XML_TREE_INVALID_DEC, /* 1301 */
+    XML_TREE_UNTERMINATED_ENTITY, /* 1302 */
+    XML_TREE_NOT_UTF8, /* 1303 */
+    XML_SAVE_NOT_UTF8 = 1400,
+    XML_SAVE_CHAR_INVALID, /* 1401 */
+    XML_SAVE_NO_DOCTYPE, /* 1402 */
+    XML_SAVE_UNKNOWN_ENCODING, /* 1403 */
+    XML_REGEXP_COMPILE_ERROR = 1450,
+    XML_IO_UNKNOWN = 1500,
+    XML_IO_EACCES, /* 1501 */
+    XML_IO_EAGAIN, /* 1502 */
+    XML_IO_EBADF, /* 1503 */
+    XML_IO_EBADMSG, /* 1504 */
+    XML_IO_EBUSY, /* 1505 */
+    XML_IO_ECANCELED, /* 1506 */
+    XML_IO_ECHILD, /* 1507 */
+    XML_IO_EDEADLK, /* 1508 */
+    XML_IO_EDOM, /* 1509 */
+    XML_IO_EEXIST, /* 1510 */
+    XML_IO_EFAULT, /* 1511 */
+    XML_IO_EFBIG, /* 1512 */
+    XML_IO_EINPROGRESS, /* 1513 */
+    XML_IO_EINTR, /* 1514 */
+    XML_IO_EINVAL, /* 1515 */
+    XML_IO_EIO, /* 1516 */
+    XML_IO_EISDIR, /* 1517 */
+    XML_IO_EMFILE, /* 1518 */
+    XML_IO_EMLINK, /* 1519 */
+    XML_IO_EMSGSIZE, /* 1520 */
+    XML_IO_ENAMETOOLONG, /* 1521 */
+    XML_IO_ENFILE, /* 1522 */
+    XML_IO_ENODEV, /* 1523 */
+    XML_IO_ENOENT, /* 1524 */
+    XML_IO_ENOEXEC, /* 1525 */
+    XML_IO_ENOLCK, /* 1526 */
+    XML_IO_ENOMEM, /* 1527 */
+    XML_IO_ENOSPC, /* 1528 */
+    XML_IO_ENOSYS, /* 1529 */
+    XML_IO_ENOTDIR, /* 1530 */
+    XML_IO_ENOTEMPTY, /* 1531 */
+    XML_IO_ENOTSUP, /* 1532 */
+    XML_IO_ENOTTY, /* 1533 */
+    XML_IO_ENXIO, /* 1534 */
+    XML_IO_EPERM, /* 1535 */
+    XML_IO_EPIPE, /* 1536 */
+    XML_IO_ERANGE, /* 1537 */
+    XML_IO_EROFS, /* 1538 */
+    XML_IO_ESPIPE, /* 1539 */
+    XML_IO_ESRCH, /* 1540 */
+    XML_IO_ETIMEDOUT, /* 1541 */
+    XML_IO_EXDEV, /* 1542 */
+    XML_IO_NETWORK_ATTEMPT, /* 1543 */
+    XML_IO_ENCODER, /* 1544 */
+    XML_IO_FLUSH, /* 1545 */
+    XML_IO_WRITE, /* 1546 */
+    XML_IO_NO_INPUT, /* 1547 */
+    XML_IO_BUFFER_FULL, /* 1548 */
+    XML_IO_LOAD_ERROR, /* 1549 */
+    XML_IO_ENOTSOCK, /* 1550 */
+    XML_IO_EISCONN, /* 1551 */
+    XML_IO_ECONNREFUSED, /* 1552 */
+    XML_IO_ENETUNREACH, /* 1553 */
+    XML_IO_EADDRINUSE, /* 1554 */
+    XML_IO_EALREADY, /* 1555 */
+    XML_IO_EAFNOSUPPORT, /* 1556 */
+    XML_IO_UNSUPPORTED_PROTOCOL, /* 1557 */
+    XML_XINCLUDE_RECURSION=1600,
+    XML_XINCLUDE_PARSE_VALUE, /* 1601 */
+    XML_XINCLUDE_ENTITY_DEF_MISMATCH, /* 1602 */
+    XML_XINCLUDE_NO_HREF, /* 1603 */
+    XML_XINCLUDE_NO_FALLBACK, /* 1604 */
+    XML_XINCLUDE_HREF_URI, /* 1605 */
+    XML_XINCLUDE_TEXT_FRAGMENT, /* 1606 */
+    XML_XINCLUDE_TEXT_DOCUMENT, /* 1607 */
+    XML_XINCLUDE_INVALID_CHAR, /* 1608 */
+    XML_XINCLUDE_BUILD_FAILED, /* 1609 */
+    XML_XINCLUDE_UNKNOWN_ENCODING, /* 1610 */
+    XML_XINCLUDE_MULTIPLE_ROOT, /* 1611 */
+    XML_XINCLUDE_XPTR_FAILED, /* 1612 */
+    XML_XINCLUDE_XPTR_RESULT, /* 1613 */
+    XML_XINCLUDE_INCLUDE_IN_INCLUDE, /* 1614 */
+    XML_XINCLUDE_FALLBACKS_IN_INCLUDE, /* 1615 */
+    XML_XINCLUDE_FALLBACK_NOT_IN_INCLUDE, /* 1616 */
+    XML_XINCLUDE_DEPRECATED_NS, /* 1617 */
+    XML_XINCLUDE_FRAGMENT_ID, /* 1618 */
+    XML_CATALOG_MISSING_ATTR = 1650,
+    XML_CATALOG_ENTRY_BROKEN, /* 1651 */
+    XML_CATALOG_PREFER_VALUE, /* 1652 */
+    XML_CATALOG_NOT_CATALOG, /* 1653 */
+    XML_CATALOG_RECURSION, /* 1654 */
+    XML_SCHEMAP_PREFIX_UNDEFINED = 1700,
+    XML_SCHEMAP_ATTRFORMDEFAULT_VALUE, /* 1701 */
+    XML_SCHEMAP_ATTRGRP_NONAME_NOREF, /* 1702 */
+    XML_SCHEMAP_ATTR_NONAME_NOREF, /* 1703 */
+    XML_SCHEMAP_COMPLEXTYPE_NONAME_NOREF, /* 1704 */
+    XML_SCHEMAP_ELEMFORMDEFAULT_VALUE, /* 1705 */
+    XML_SCHEMAP_ELEM_NONAME_NOREF, /* 1706 */
+    XML_SCHEMAP_EXTENSION_NO_BASE, /* 1707 */
+    XML_SCHEMAP_FACET_NO_VALUE, /* 1708 */
+    XML_SCHEMAP_FAILED_BUILD_IMPORT, /* 1709 */
+    XML_SCHEMAP_GROUP_NONAME_NOREF, /* 1710 */
+    XML_SCHEMAP_IMPORT_NAMESPACE_NOT_URI, /* 1711 */
+    XML_SCHEMAP_IMPORT_REDEFINE_NSNAME, /* 1712 */
+    XML_SCHEMAP_IMPORT_SCHEMA_NOT_URI, /* 1713 */
+    XML_SCHEMAP_INVALID_BOOLEAN, /* 1714 */
+    XML_SCHEMAP_INVALID_ENUM, /* 1715 */
+    XML_SCHEMAP_INVALID_FACET, /* 1716 */
+    XML_SCHEMAP_INVALID_FACET_VALUE, /* 1717 */
+    XML_SCHEMAP_INVALID_MAXOCCURS, /* 1718 */
+    XML_SCHEMAP_INVALID_MINOCCURS, /* 1719 */
+    XML_SCHEMAP_INVALID_REF_AND_SUBTYPE, /* 1720 */
+    XML_SCHEMAP_INVALID_WHITE_SPACE, /* 1721 */
+    XML_SCHEMAP_NOATTR_NOREF, /* 1722 */
+    XML_SCHEMAP_NOTATION_NO_NAME, /* 1723 */
+    XML_SCHEMAP_NOTYPE_NOREF, /* 1724 */
+    XML_SCHEMAP_REF_AND_SUBTYPE, /* 1725 */
+    XML_SCHEMAP_RESTRICTION_NONAME_NOREF, /* 1726 */
+    XML_SCHEMAP_SIMPLETYPE_NONAME, /* 1727 */
+    XML_SCHEMAP_TYPE_AND_SUBTYPE, /* 1728 */
+    XML_SCHEMAP_UNKNOWN_ALL_CHILD, /* 1729 */
+    XML_SCHEMAP_UNKNOWN_ANYATTRIBUTE_CHILD, /* 1730 */
+    XML_SCHEMAP_UNKNOWN_ATTR_CHILD, /* 1731 */
+    XML_SCHEMAP_UNKNOWN_ATTRGRP_CHILD, /* 1732 */
+    XML_SCHEMAP_UNKNOWN_ATTRIBUTE_GROUP, /* 1733 */
+    XML_SCHEMAP_UNKNOWN_BASE_TYPE, /* 1734 */
+    XML_SCHEMAP_UNKNOWN_CHOICE_CHILD, /* 1735 */
+    XML_SCHEMAP_UNKNOWN_COMPLEXCONTENT_CHILD, /* 1736 */
+    XML_SCHEMAP_UNKNOWN_COMPLEXTYPE_CHILD, /* 1737 */
+    XML_SCHEMAP_UNKNOWN_ELEM_CHILD, /* 1738 */
+    XML_SCHEMAP_UNKNOWN_EXTENSION_CHILD, /* 1739 */
+    XML_SCHEMAP_UNKNOWN_FACET_CHILD, /* 1740 */
+    XML_SCHEMAP_UNKNOWN_FACET_TYPE, /* 1741 */
+    XML_SCHEMAP_UNKNOWN_GROUP_CHILD, /* 1742 */
+    XML_SCHEMAP_UNKNOWN_IMPORT_CHILD, /* 1743 */
+    XML_SCHEMAP_UNKNOWN_LIST_CHILD, /* 1744 */
+    XML_SCHEMAP_UNKNOWN_NOTATION_CHILD, /* 1745 */
+    XML_SCHEMAP_UNKNOWN_PROCESSCONTENT_CHILD, /* 1746 */
+    XML_SCHEMAP_UNKNOWN_REF, /* 1747 */
+    XML_SCHEMAP_UNKNOWN_RESTRICTION_CHILD, /* 1748 */
+    XML_SCHEMAP_UNKNOWN_SCHEMAS_CHILD, /* 1749 */
+    XML_SCHEMAP_UNKNOWN_SEQUENCE_CHILD, /* 1750 */
+    XML_SCHEMAP_UNKNOWN_SIMPLECONTENT_CHILD, /* 1751 */
+    XML_SCHEMAP_UNKNOWN_SIMPLETYPE_CHILD, /* 1752 */
+    XML_SCHEMAP_UNKNOWN_TYPE, /* 1753 */
+    XML_SCHEMAP_UNKNOWN_UNION_CHILD, /* 1754 */
+    XML_SCHEMAP_ELEM_DEFAULT_FIXED, /* 1755 */
+    XML_SCHEMAP_REGEXP_INVALID, /* 1756 */
+    XML_SCHEMAP_FAILED_LOAD, /* 1757 */
+    XML_SCHEMAP_NOTHING_TO_PARSE, /* 1758 */
+    XML_SCHEMAP_NOROOT, /* 1759 */
+    XML_SCHEMAP_REDEFINED_GROUP, /* 1760 */
+    XML_SCHEMAP_REDEFINED_TYPE, /* 1761 */
+    XML_SCHEMAP_REDEFINED_ELEMENT, /* 1762 */
+    XML_SCHEMAP_REDEFINED_ATTRGROUP, /* 1763 */
+    XML_SCHEMAP_REDEFINED_ATTR, /* 1764 */
+    XML_SCHEMAP_REDEFINED_NOTATION, /* 1765 */
+    XML_SCHEMAP_FAILED_PARSE, /* 1766 */
+    XML_SCHEMAP_UNKNOWN_PREFIX, /* 1767 */
+    XML_SCHEMAP_DEF_AND_PREFIX, /* 1768 */
+    XML_SCHEMAP_UNKNOWN_INCLUDE_CHILD, /* 1769 */
+    XML_SCHEMAP_INCLUDE_SCHEMA_NOT_URI, /* 1770 */
+    XML_SCHEMAP_INCLUDE_SCHEMA_NO_URI, /* 1771 */
+    XML_SCHEMAP_NOT_SCHEMA, /* 1772 */
+    XML_SCHEMAP_UNKNOWN_MEMBER_TYPE, /* 1773 */
+    XML_SCHEMAP_INVALID_ATTR_USE, /* 1774 */
+    XML_SCHEMAP_RECURSIVE, /* 1775 */
+    XML_SCHEMAP_SUPERNUMEROUS_LIST_ITEM_TYPE, /* 1776 */
+    XML_SCHEMAP_INVALID_ATTR_COMBINATION, /* 1777 */
+    XML_SCHEMAP_INVALID_ATTR_INLINE_COMBINATION, /* 1778 */
+    XML_SCHEMAP_MISSING_SIMPLETYPE_CHILD, /* 1779 */
+    XML_SCHEMAP_INVALID_ATTR_NAME, /* 1780 */
+    XML_SCHEMAP_REF_AND_CONTENT, /* 1781 */
+    XML_SCHEMAP_CT_PROPS_CORRECT_1, /* 1782 */
+    XML_SCHEMAP_CT_PROPS_CORRECT_2, /* 1783 */
+    XML_SCHEMAP_CT_PROPS_CORRECT_3, /* 1784 */
+    XML_SCHEMAP_CT_PROPS_CORRECT_4, /* 1785 */
+    XML_SCHEMAP_CT_PROPS_CORRECT_5, /* 1786 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_1, /* 1787 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_1, /* 1788 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_2, /* 1789 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_2, /* 1790 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_3, /* 1791 */
+    XML_SCHEMAP_WILDCARD_INVALID_NS_MEMBER, /* 1792 */
+    XML_SCHEMAP_INTERSECTION_NOT_EXPRESSIBLE, /* 1793 */
+    XML_SCHEMAP_UNION_NOT_EXPRESSIBLE, /* 1794 */
+    XML_SCHEMAP_SRC_IMPORT_3_1, /* 1795 */
+    XML_SCHEMAP_SRC_IMPORT_3_2, /* 1796 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_1, /* 1797 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_2, /* 1798 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_3, /* 1799 */
+    XML_SCHEMAP_COS_CT_EXTENDS_1_3, /* 1800 */
+    XML_SCHEMAV_NOROOT = 1801,
+    XML_SCHEMAV_UNDECLAREDELEM, /* 1802 */
+    XML_SCHEMAV_NOTTOPLEVEL, /* 1803 */
+    XML_SCHEMAV_MISSING, /* 1804 */
+    XML_SCHEMAV_WRONGELEM, /* 1805 */
+    XML_SCHEMAV_NOTYPE, /* 1806 */
+    XML_SCHEMAV_NOROLLBACK, /* 1807 */
+    XML_SCHEMAV_ISABSTRACT, /* 1808 */
+    XML_SCHEMAV_NOTEMPTY, /* 1809 */
+    XML_SCHEMAV_ELEMCONT, /* 1810 */
+    XML_SCHEMAV_HAVEDEFAULT, /* 1811 */
+    XML_SCHEMAV_NOTNILLABLE, /* 1812 */
+    XML_SCHEMAV_EXTRACONTENT, /* 1813 */
+    XML_SCHEMAV_INVALIDATTR, /* 1814 */
+    XML_SCHEMAV_INVALIDELEM, /* 1815 */
+    XML_SCHEMAV_NOTDETERMINIST, /* 1816 */
+    XML_SCHEMAV_CONSTRUCT, /* 1817 */
+    XML_SCHEMAV_INTERNAL, /* 1818 */
+    XML_SCHEMAV_NOTSIMPLE, /* 1819 */
+    XML_SCHEMAV_ATTRUNKNOWN, /* 1820 */
+    XML_SCHEMAV_ATTRINVALID, /* 1821 */
+    XML_SCHEMAV_VALUE, /* 1822 */
+    XML_SCHEMAV_FACET, /* 1823 */
+    XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_1, /* 1824 */
+    XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_2, /* 1825 */
+    XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_3, /* 1826 */
+    XML_SCHEMAV_CVC_TYPE_3_1_1, /* 1827 */
+    XML_SCHEMAV_CVC_TYPE_3_1_2, /* 1828 */
+    XML_SCHEMAV_CVC_FACET_VALID, /* 1829 */
+    XML_SCHEMAV_CVC_LENGTH_VALID, /* 1830 */
+    XML_SCHEMAV_CVC_MINLENGTH_VALID, /* 1831 */
+    XML_SCHEMAV_CVC_MAXLENGTH_VALID, /* 1832 */
+    XML_SCHEMAV_CVC_MININCLUSIVE_VALID, /* 1833 */
+    XML_SCHEMAV_CVC_MAXINCLUSIVE_VALID, /* 1834 */
+    XML_SCHEMAV_CVC_MINEXCLUSIVE_VALID, /* 1835 */
+    XML_SCHEMAV_CVC_MAXEXCLUSIVE_VALID, /* 1836 */
+    XML_SCHEMAV_CVC_TOTALDIGITS_VALID, /* 1837 */
+    XML_SCHEMAV_CVC_FRACTIONDIGITS_VALID, /* 1838 */
+    XML_SCHEMAV_CVC_PATTERN_VALID, /* 1839 */
+    XML_SCHEMAV_CVC_ENUMERATION_VALID, /* 1840 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_2_1, /* 1841 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_2_2, /* 1842 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_2_3, /* 1843 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_2_4, /* 1844 */
+    XML_SCHEMAV_CVC_ELT_1, /* 1845 */
+    XML_SCHEMAV_CVC_ELT_2, /* 1846 */
+    XML_SCHEMAV_CVC_ELT_3_1, /* 1847 */
+    XML_SCHEMAV_CVC_ELT_3_2_1, /* 1848 */
+    XML_SCHEMAV_CVC_ELT_3_2_2, /* 1849 */
+    XML_SCHEMAV_CVC_ELT_4_1, /* 1850 */
+    XML_SCHEMAV_CVC_ELT_4_2, /* 1851 */
+    XML_SCHEMAV_CVC_ELT_4_3, /* 1852 */
+    XML_SCHEMAV_CVC_ELT_5_1_1, /* 1853 */
+    XML_SCHEMAV_CVC_ELT_5_1_2, /* 1854 */
+    XML_SCHEMAV_CVC_ELT_5_2_1, /* 1855 */
+    XML_SCHEMAV_CVC_ELT_5_2_2_1, /* 1856 */
+    XML_SCHEMAV_CVC_ELT_5_2_2_2_1, /* 1857 */
+    XML_SCHEMAV_CVC_ELT_5_2_2_2_2, /* 1858 */
+    XML_SCHEMAV_CVC_ELT_6, /* 1859 */
+    XML_SCHEMAV_CVC_ELT_7, /* 1860 */
+    XML_SCHEMAV_CVC_ATTRIBUTE_1, /* 1861 */
+    XML_SCHEMAV_CVC_ATTRIBUTE_2, /* 1862 */
+    XML_SCHEMAV_CVC_ATTRIBUTE_3, /* 1863 */
+    XML_SCHEMAV_CVC_ATTRIBUTE_4, /* 1864 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_3_1, /* 1865 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_3_2_1, /* 1866 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_3_2_2, /* 1867 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_4, /* 1868 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_5_1, /* 1869 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_5_2, /* 1870 */
+    XML_SCHEMAV_ELEMENT_CONTENT, /* 1871 */
+    XML_SCHEMAV_DOCUMENT_ELEMENT_MISSING, /* 1872 */
+    XML_SCHEMAV_CVC_COMPLEX_TYPE_1, /* 1873 */
+    XML_SCHEMAV_CVC_AU, /* 1874 */
+    XML_SCHEMAV_CVC_TYPE_1, /* 1875 */
+    XML_SCHEMAV_CVC_TYPE_2, /* 1876 */
+    XML_SCHEMAV_CVC_IDC, /* 1877 */
+    XML_SCHEMAV_CVC_WILDCARD, /* 1878 */
+    XML_SCHEMAV_MISC, /* 1879 */
+    XML_XPTR_UNKNOWN_SCHEME = 1900,
+    XML_XPTR_CHILDSEQ_START, /* 1901 */
+    XML_XPTR_EVAL_FAILED, /* 1902 */
+    XML_XPTR_EXTRA_OBJECTS, /* 1903 */
+    XML_C14N_CREATE_CTXT = 1950,
+    XML_C14N_REQUIRES_UTF8, /* 1951 */
+    XML_C14N_CREATE_STACK, /* 1952 */
+    XML_C14N_INVALID_NODE, /* 1953 */
+    XML_C14N_UNKNOW_NODE, /* 1954 */
+    XML_C14N_RELATIVE_NAMESPACE, /* 1955 */
+    XML_FTP_PASV_ANSWER = 2000,
+    XML_FTP_EPSV_ANSWER, /* 2001 */
+    XML_FTP_ACCNT, /* 2002 */
+    XML_FTP_URL_SYNTAX, /* 2003 */
+    XML_HTTP_URL_SYNTAX = 2020,
+    XML_HTTP_USE_IP, /* 2021 */
+    XML_HTTP_UNKNOWN_HOST, /* 2022 */
+    XML_SCHEMAP_SRC_SIMPLE_TYPE_1 = 3000,
+    XML_SCHEMAP_SRC_SIMPLE_TYPE_2, /* 3001 */
+    XML_SCHEMAP_SRC_SIMPLE_TYPE_3, /* 3002 */
+    XML_SCHEMAP_SRC_SIMPLE_TYPE_4, /* 3003 */
+    XML_SCHEMAP_SRC_RESOLVE, /* 3004 */
+    XML_SCHEMAP_SRC_RESTRICTION_BASE_OR_SIMPLETYPE, /* 3005 */
+    XML_SCHEMAP_SRC_LIST_ITEMTYPE_OR_SIMPLETYPE, /* 3006 */
+    XML_SCHEMAP_SRC_UNION_MEMBERTYPES_OR_SIMPLETYPES, /* 3007 */
+    XML_SCHEMAP_ST_PROPS_CORRECT_1, /* 3008 */
+    XML_SCHEMAP_ST_PROPS_CORRECT_2, /* 3009 */
+    XML_SCHEMAP_ST_PROPS_CORRECT_3, /* 3010 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_1_1, /* 3011 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_1_2, /* 3012 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_1_3_1, /* 3013 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_1_3_2, /* 3014 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_1, /* 3015 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_1_1, /* 3016 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_1_2, /* 3017 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_1, /* 3018 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_2, /* 3019 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_3, /* 3020 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_4, /* 3021 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_5, /* 3022 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_1, /* 3023 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_1, /* 3024 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_1_2, /* 3025 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_2, /* 3026 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_1, /* 3027 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_3, /* 3028 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_4, /* 3029 */
+    XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_5, /* 3030 */
+    XML_SCHEMAP_COS_ST_DERIVED_OK_2_1, /* 3031 */
+    XML_SCHEMAP_COS_ST_DERIVED_OK_2_2, /* 3032 */
+    XML_SCHEMAP_S4S_ELEM_NOT_ALLOWED, /* 3033 */
+    XML_SCHEMAP_S4S_ELEM_MISSING, /* 3034 */
+    XML_SCHEMAP_S4S_ATTR_NOT_ALLOWED, /* 3035 */
+    XML_SCHEMAP_S4S_ATTR_MISSING, /* 3036 */
+    XML_SCHEMAP_S4S_ATTR_INVALID_VALUE, /* 3037 */
+    XML_SCHEMAP_SRC_ELEMENT_1, /* 3038 */
+    XML_SCHEMAP_SRC_ELEMENT_2_1, /* 3039 */
+    XML_SCHEMAP_SRC_ELEMENT_2_2, /* 3040 */
+    XML_SCHEMAP_SRC_ELEMENT_3, /* 3041 */
+    XML_SCHEMAP_P_PROPS_CORRECT_1, /* 3042 */
+    XML_SCHEMAP_P_PROPS_CORRECT_2_1, /* 3043 */
+    XML_SCHEMAP_P_PROPS_CORRECT_2_2, /* 3044 */
+    XML_SCHEMAP_E_PROPS_CORRECT_2, /* 3045 */
+    XML_SCHEMAP_E_PROPS_CORRECT_3, /* 3046 */
+    XML_SCHEMAP_E_PROPS_CORRECT_4, /* 3047 */
+    XML_SCHEMAP_E_PROPS_CORRECT_5, /* 3048 */
+    XML_SCHEMAP_E_PROPS_CORRECT_6, /* 3049 */
+    XML_SCHEMAP_SRC_INCLUDE, /* 3050 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_1, /* 3051 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_2, /* 3052 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_3_1, /* 3053 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_3_2, /* 3054 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_4, /* 3055 */
+    XML_SCHEMAP_NO_XMLNS, /* 3056 */
+    XML_SCHEMAP_NO_XSI, /* 3057 */
+    XML_SCHEMAP_COS_VALID_DEFAULT_1, /* 3058 */
+    XML_SCHEMAP_COS_VALID_DEFAULT_2_1, /* 3059 */
+    XML_SCHEMAP_COS_VALID_DEFAULT_2_2_1, /* 3060 */
+    XML_SCHEMAP_COS_VALID_DEFAULT_2_2_2, /* 3061 */
+    XML_SCHEMAP_CVC_SIMPLE_TYPE, /* 3062 */
+    XML_SCHEMAP_COS_CT_EXTENDS_1_1, /* 3063 */
+    XML_SCHEMAP_SRC_IMPORT_1_1, /* 3064 */
+    XML_SCHEMAP_SRC_IMPORT_1_2, /* 3065 */
+    XML_SCHEMAP_SRC_IMPORT_2, /* 3066 */
+    XML_SCHEMAP_SRC_IMPORT_2_1, /* 3067 */
+    XML_SCHEMAP_SRC_IMPORT_2_2, /* 3068 */
+    XML_SCHEMAP_INTERNAL, /* 3069 non-W3C */
+    XML_SCHEMAP_NOT_DETERMINISTIC, /* 3070 non-W3C */
+    XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_1, /* 3071 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_2, /* 3072 */
+    XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_3, /* 3073 */
+    XML_SCHEMAP_MG_PROPS_CORRECT_1, /* 3074 */
+    XML_SCHEMAP_MG_PROPS_CORRECT_2, /* 3075 */
+    XML_SCHEMAP_SRC_CT_1, /* 3076 */
+    XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_3, /* 3077 */
+    XML_SCHEMAP_AU_PROPS_CORRECT_2, /* 3078 */
+    XML_SCHEMAP_A_PROPS_CORRECT_2, /* 3079 */
+    XML_SCHEMAP_C_PROPS_CORRECT, /* 3080 */
+    XML_SCHEMAP_SRC_REDEFINE, /* 3081 */
+    XML_SCHEMAP_SRC_IMPORT, /* 3082 */
+    XML_SCHEMAP_WARN_SKIP_SCHEMA, /* 3083 */
+    XML_SCHEMAP_WARN_UNLOCATED_SCHEMA, /* 3084 */
+    XML_SCHEMAP_WARN_ATTR_REDECL_PROH, /* 3085 */
+    XML_SCHEMAP_WARN_ATTR_POINTLESS_PROH, /* 3085 */
+    XML_SCHEMAP_AG_PROPS_CORRECT, /* 3086 */
+    XML_SCHEMAP_COS_CT_EXTENDS_1_2, /* 3087 */
+    XML_SCHEMAP_AU_PROPS_CORRECT, /* 3088 */
+    XML_SCHEMAP_A_PROPS_CORRECT_3, /* 3089 */
+    XML_SCHEMAP_COS_ALL_LIMITED, /* 3090 */
+    XML_SCHEMATRONV_ASSERT = 4000, /* 4000 */
+    XML_SCHEMATRONV_REPORT,
+    XML_MODULE_OPEN = 4900, /* 4900 */
+    XML_MODULE_CLOSE, /* 4901 */
+    XML_CHECK_FOUND_ELEMENT = 5000,
+    XML_CHECK_FOUND_ATTRIBUTE, /* 5001 */
+    XML_CHECK_FOUND_TEXT, /* 5002 */
+    XML_CHECK_FOUND_CDATA, /* 5003 */
+    XML_CHECK_FOUND_ENTITYREF, /* 5004 */
+    XML_CHECK_FOUND_ENTITY, /* 5005 */
+    XML_CHECK_FOUND_PI, /* 5006 */
+    XML_CHECK_FOUND_COMMENT, /* 5007 */
+    XML_CHECK_FOUND_DOCTYPE, /* 5008 */
+    XML_CHECK_FOUND_FRAGMENT, /* 5009 */
+    XML_CHECK_FOUND_NOTATION, /* 5010 */
+    XML_CHECK_UNKNOWN_NODE, /* 5011 */
+    XML_CHECK_ENTITY_TYPE, /* 5012 */
+    XML_CHECK_NO_PARENT, /* 5013 */
+    XML_CHECK_NO_DOC, /* 5014 */
+    XML_CHECK_NO_NAME, /* 5015 */
+    XML_CHECK_NO_ELEM, /* 5016 */
+    XML_CHECK_WRONG_DOC, /* 5017 */
+    XML_CHECK_NO_PREV, /* 5018 */
+    XML_CHECK_WRONG_PREV, /* 5019 */
+    XML_CHECK_NO_NEXT, /* 5020 */
+    XML_CHECK_WRONG_NEXT, /* 5021 */
+    XML_CHECK_NOT_DTD, /* 5022 */
+    XML_CHECK_NOT_ATTR, /* 5023 */
+    XML_CHECK_NOT_ATTR_DECL, /* 5024 */
+    XML_CHECK_NOT_ELEM_DECL, /* 5025 */
+    XML_CHECK_NOT_ENTITY_DECL, /* 5026 */
+    XML_CHECK_NOT_NS_DECL, /* 5027 */
+    XML_CHECK_NO_HREF, /* 5028 */
+    XML_CHECK_WRONG_PARENT,/* 5029 */
+    XML_CHECK_NS_SCOPE, /* 5030 */
+    XML_CHECK_NS_ANCESTOR, /* 5031 */
+    XML_CHECK_NOT_UTF8, /* 5032 */
+    XML_CHECK_NO_DICT, /* 5033 */
+    XML_CHECK_NOT_NCNAME, /* 5034 */
+    XML_CHECK_OUTSIDE_DICT, /* 5035 */
+    XML_CHECK_WRONG_NAME, /* 5036 */
+    XML_CHECK_NAME_NOT_NULL, /* 5037 */
+    XML_I18N_NO_NAME = 6000,
+    XML_I18N_NO_HANDLER, /* 6001 */
+    XML_I18N_EXCESS_HANDLER, /* 6002 */
+    XML_I18N_CONV_FAILED, /* 6003 */
+    XML_I18N_NO_OUTPUT, /* 6004 */
+    XML_BUF_OVERFLOW = 7000
+} xmlParserErrors;
+
+/**
+ * xmlGenericErrorFunc:
+ * @ctx:  a parsing context
+ * @msg:  the message
+ * @...:  the extra arguments of the varargs to format the message
+ *
+ * Signature of the function to use when there is an error and
+ * no parsing or validity context available .
+ */
+typedef void (*xmlGenericErrorFunc) (void *ctx,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+/**
+ * xmlStructuredErrorFunc:
+ * @userData:  user provided data for the error callback
+ * @error:  the error being raised.
+ *
+ * Signature of the function to use when there is an error and
+ * the module handles the new error reporting mechanism.
+ */
+typedef void (*xmlStructuredErrorFunc) (void *userData, const xmlError *error);
+
+/** DOC_DISABLE */
+XML_DEPRECATED
+XMLPUBFUN const xmlError *__xmlLastError(void);
+
+XMLPUBFUN xmlGenericErrorFunc *__xmlGenericError(void);
+XMLPUBFUN void **__xmlGenericErrorContext(void);
+XMLPUBFUN xmlStructuredErrorFunc *__xmlStructuredError(void);
+XMLPUBFUN void **__xmlStructuredErrorContext(void);
+
+#ifndef XML_GLOBALS_NO_REDEFINITION
+  #define xmlLastError (*__xmlLastError())
+  #define xmlGenericError (*__xmlGenericError())
+  #define xmlGenericErrorContext (*__xmlGenericErrorContext())
+  #define xmlStructuredError (*__xmlStructuredError())
+  #define xmlStructuredErrorContext (*__xmlStructuredErrorContext())
+#endif
+/** DOC_ENABLE */
+
+/*
+ * Use the following function to reset the two global variables
+ * xmlGenericError and xmlGenericErrorContext.
+ */
+XMLPUBFUN void
+    xmlSetGenericErrorFunc	(void *ctx,
+				 xmlGenericErrorFunc handler);
+XML_DEPRECATED
+XMLPUBFUN void
+    xmlThrDefSetGenericErrorFunc(void *ctx,
+                                 xmlGenericErrorFunc handler);
+
+XMLPUBFUN void
+    xmlSetStructuredErrorFunc	(void *ctx,
+				 xmlStructuredErrorFunc handler);
+XML_DEPRECATED
+XMLPUBFUN void
+    xmlThrDefSetStructuredErrorFunc(void *ctx,
+                                 xmlStructuredErrorFunc handler);
+/*
+ * Default message routines used by SAX and Valid context for error
+ * and warning reporting.
+ */
+XMLPUBFUN void
+    xmlParserError		(void *ctx,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+XMLPUBFUN void
+    xmlParserWarning		(void *ctx,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+XMLPUBFUN void
+    xmlParserValidityError	(void *ctx,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+XMLPUBFUN void
+    xmlParserValidityWarning	(void *ctx,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+/** DOC_DISABLE */
+struct _xmlParserInput;
+/** DOC_ENABLE */
+XMLPUBFUN void
+    xmlParserPrintFileInfo	(struct _xmlParserInput *input);
+XMLPUBFUN void
+    xmlParserPrintFileContext	(struct _xmlParserInput *input);
+XMLPUBFUN void
+xmlFormatError			(const xmlError *err,
+				 xmlGenericErrorFunc channel,
+				 void *data);
+
+/*
+ * Extended error information routines
+ */
+XMLPUBFUN const xmlError *
+    xmlGetLastError		(void);
+XMLPUBFUN void
+    xmlResetLastError		(void);
+XMLPUBFUN const xmlError *
+    xmlCtxtGetLastError		(void *ctx);
+XMLPUBFUN void
+    xmlCtxtResetLastError	(void *ctx);
+XMLPUBFUN void
+    xmlResetError		(xmlErrorPtr err);
+XMLPUBFUN int
+    xmlCopyError		(const xmlError *from,
+				 xmlErrorPtr to);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_ERROR_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlexports.h

@@ -0,0 +1,96 @@
+/*
+ * Summary: macros for marking symbols as exportable/importable.
+ * Description: macros for marking symbols as exportable/importable.
+ *
+ * Copy: See Copyright for the status of this software.
+ */
+
+#ifndef __XML_EXPORTS_H__
+#define __XML_EXPORTS_H__
+
+/** DOC_DISABLE */
+
+/*
+ * Symbol visibility
+ */
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+  #ifdef LIBXML_STATIC
+    #define XMLPUBLIC
+  #elif defined(IN_LIBXML)
+    #define XMLPUBLIC __declspec(dllexport)
+  #else
+    #define XMLPUBLIC __declspec(dllimport)
+  #endif
+#else /* not Windows */
+  #define XMLPUBLIC
+#endif /* platform switch */
+
+#define XMLPUBFUN XMLPUBLIC
+
+#define XMLPUBVAR XMLPUBLIC extern
+
+/* Compatibility */
+#define XMLCALL
+#define XMLCDECL
+#ifndef LIBXML_DLL_IMPORT
+  #define LIBXML_DLL_IMPORT XMLPUBVAR
+#endif
+
+/*
+ * Attributes
+ */
+
+#if !defined(__clang__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)
+  #define LIBXML_ATTR_ALLOC_SIZE(x) __attribute__((alloc_size(x)))
+#else
+  #define LIBXML_ATTR_ALLOC_SIZE(x)
+#endif
+
+#if __GNUC__ * 100 + __GNUC_MINOR__ >= 303
+  #define LIBXML_ATTR_FORMAT(fmt,args) \
+    __attribute__((__format__(__printf__,fmt,args)))
+#else
+  #define LIBXML_ATTR_FORMAT(fmt,args)
+#endif
+
+#ifndef XML_DEPRECATED
+  #if defined(IN_LIBXML)
+    #define XML_DEPRECATED
+  #elif __GNUC__ * 100 + __GNUC_MINOR__ >= 301
+    #define XML_DEPRECATED __attribute__((deprecated))
+  #elif defined(_MSC_VER) && _MSC_VER >= 1400
+    /* Available since Visual Studio 2005 */
+    #define XML_DEPRECATED __declspec(deprecated)
+  #else
+    #define XML_DEPRECATED
+  #endif
+#endif
+
+#ifndef XML_DEPRECATED_MEMBER
+  #if defined(IN_LIBXML)
+    #define XML_DEPRECATED_MEMBER
+  #elif __GNUC__ * 100 + __GNUC_MINOR__ >= 301
+    #define XML_DEPRECATED_MEMBER __attribute__((deprecated))
+  #else
+    #define XML_DEPRECATED_MEMBER
+  #endif
+#endif
+
+/*
+ * Originally declared in xmlversion.h which is generated
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+XMLPUBFUN void xmlCheckVersion(int version);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_EXPORTS_H__ */
+
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlmemory.h

@@ -0,0 +1,188 @@
+/*
+ * Summary: interface for the memory allocator
+ * Description: provides interfaces for the memory allocator,
+ *              including debugging capabilities.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __DEBUG_MEMORY_ALLOC__
+#define __DEBUG_MEMORY_ALLOC__
+
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The XML memory wrapper support 4 basic overloadable functions.
+ */
+/**
+ * xmlFreeFunc:
+ * @mem: an already allocated block of memory
+ *
+ * Signature for a free() implementation.
+ */
+typedef void (*xmlFreeFunc)(void *mem);
+/**
+ * xmlMallocFunc:
+ * @size:  the size requested in bytes
+ *
+ * Signature for a malloc() implementation.
+ *
+ * Returns a pointer to the newly allocated block or NULL in case of error.
+ */
+typedef void *(LIBXML_ATTR_ALLOC_SIZE(1) *xmlMallocFunc)(size_t size);
+
+/**
+ * xmlReallocFunc:
+ * @mem: an already allocated block of memory
+ * @size:  the new size requested in bytes
+ *
+ * Signature for a realloc() implementation.
+ *
+ * Returns a pointer to the newly reallocated block or NULL in case of error.
+ */
+typedef void *(*xmlReallocFunc)(void *mem, size_t size);
+
+/**
+ * xmlStrdupFunc:
+ * @str: a zero terminated string
+ *
+ * Signature for an strdup() implementation.
+ *
+ * Returns the copy of the string or NULL in case of error.
+ */
+typedef char *(*xmlStrdupFunc)(const char *str);
+
+/*
+ * In general the memory allocation entry points are not kept
+ * thread specific but this can be overridden by LIBXML_THREAD_ALLOC_ENABLED
+ *    - xmlMalloc
+ *    - xmlMallocAtomic
+ *    - xmlRealloc
+ *    - xmlMemStrdup
+ *    - xmlFree
+ */
+#ifdef LIBXML_THREAD_ALLOC_ENABLED
+
+/** DOC_DISABLE */
+XMLPUBFUN xmlMallocFunc *__xmlMalloc(void);
+XMLPUBFUN xmlMallocFunc *__xmlMallocAtomic(void);
+XMLPUBFUN xmlReallocFunc *__xmlRealloc(void);
+XMLPUBFUN xmlFreeFunc *__xmlFree(void);
+XMLPUBFUN xmlStrdupFunc *__xmlMemStrdup(void);
+
+#ifndef XML_GLOBALS_NO_REDEFINITION
+  #define xmlMalloc (*__xmlMalloc())
+  #define xmlMallocAtomic (*__xmlMallocAtomic())
+  #define xmlRealloc (*__xmlRealloc())
+  #define xmlFree (*__xmlFree())
+  #define xmlMemStrdup (*__xmlMemStrdup())
+#endif
+/** DOC_ENABLE */
+
+#else
+  XMLPUBVAR xmlMallocFunc xmlMalloc;
+  XMLPUBVAR xmlMallocFunc xmlMallocAtomic;
+  XMLPUBVAR xmlReallocFunc xmlRealloc;
+  XMLPUBVAR xmlFreeFunc xmlFree;
+  XMLPUBVAR xmlStrdupFunc xmlMemStrdup;
+#endif
+
+/*
+ * The way to overload the existing functions.
+ * The xmlGc function have an extra entry for atomic block
+ * allocations useful for garbage collected memory allocators
+ */
+XMLPUBFUN int
+	xmlMemSetup	(xmlFreeFunc freeFunc,
+			 xmlMallocFunc mallocFunc,
+			 xmlReallocFunc reallocFunc,
+			 xmlStrdupFunc strdupFunc);
+XMLPUBFUN int
+	xmlMemGet	(xmlFreeFunc *freeFunc,
+			 xmlMallocFunc *mallocFunc,
+			 xmlReallocFunc *reallocFunc,
+			 xmlStrdupFunc *strdupFunc);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlGcMemSetup	(xmlFreeFunc freeFunc,
+			 xmlMallocFunc mallocFunc,
+			 xmlMallocFunc mallocAtomicFunc,
+			 xmlReallocFunc reallocFunc,
+			 xmlStrdupFunc strdupFunc);
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlGcMemGet	(xmlFreeFunc *freeFunc,
+			 xmlMallocFunc *mallocFunc,
+			 xmlMallocFunc *mallocAtomicFunc,
+			 xmlReallocFunc *reallocFunc,
+			 xmlStrdupFunc *strdupFunc);
+
+/*
+ * Initialization of the memory layer.
+ */
+XML_DEPRECATED
+XMLPUBFUN int
+	xmlInitMemory	(void);
+
+/*
+ * Cleanup of the memory layer.
+ */
+XML_DEPRECATED
+XMLPUBFUN void
+                xmlCleanupMemory        (void);
+/*
+ * These are specific to the XML debug memory wrapper.
+ */
+XMLPUBFUN size_t
+	xmlMemSize	(void *ptr);
+XMLPUBFUN int
+	xmlMemUsed	(void);
+XMLPUBFUN int
+	xmlMemBlocks	(void);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlMemDisplay	(FILE *fp);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlMemDisplayLast(FILE *fp, long nbBytes);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlMemShow	(FILE *fp, int nr);
+XML_DEPRECATED
+XMLPUBFUN void
+	xmlMemoryDump	(void);
+XMLPUBFUN void *
+	xmlMemMalloc	(size_t size) LIBXML_ATTR_ALLOC_SIZE(1);
+XMLPUBFUN void *
+	xmlMemRealloc	(void *ptr,size_t size);
+XMLPUBFUN void
+	xmlMemFree	(void *ptr);
+XMLPUBFUN char *
+	xmlMemoryStrdup	(const char *str);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlMallocLoc	(size_t size, const char *file, int line) LIBXML_ATTR_ALLOC_SIZE(1);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlReallocLoc	(void *ptr, size_t size, const char *file, int line);
+XML_DEPRECATED
+XMLPUBFUN void *
+	xmlMallocAtomicLoc (size_t size, const char *file, int line) LIBXML_ATTR_ALLOC_SIZE(1);
+XML_DEPRECATED
+XMLPUBFUN char *
+	xmlMemStrdupLoc	(const char *str, const char *file, int line);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif  /* __DEBUG_MEMORY_ALLOC__ */
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlmodule.h

@@ -0,0 +1,61 @@
+/*
+ * Summary: dynamic module loading
+ * Description: basic API for dynamic module loading, used by
+ *              libexslt added in 2.6.17
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Joel W. Reed
+ */
+
+#ifndef __XML_MODULE_H__
+#define __XML_MODULE_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_MODULES_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlModulePtr:
+ *
+ * A handle to a dynamically loaded module
+ */
+typedef struct _xmlModule xmlModule;
+typedef xmlModule *xmlModulePtr;
+
+/**
+ * xmlModuleOption:
+ *
+ * enumeration of options that can be passed down to xmlModuleOpen()
+ */
+typedef enum {
+    XML_MODULE_LAZY = 1,	/* lazy binding */
+    XML_MODULE_LOCAL= 2		/* local binding */
+} xmlModuleOption;
+
+XML_DEPRECATED
+XMLPUBFUN xmlModulePtr xmlModuleOpen	(const char *filename,
+						 int options);
+
+XML_DEPRECATED
+XMLPUBFUN int xmlModuleSymbol		(xmlModulePtr module,
+						 const char* name,
+						 void **result);
+
+XML_DEPRECATED
+XMLPUBFUN int xmlModuleClose		(xmlModulePtr module);
+
+XML_DEPRECATED
+XMLPUBFUN int xmlModuleFree		(xmlModulePtr module);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_MODULES_ENABLED */
+
+#endif /*__XML_MODULE_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlreader.h

@@ -0,0 +1,444 @@
+/*
+ * Summary: the XMLReader implementation
+ * Description: API of the XML streaming API based on C# interfaces.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XMLREADER_H__
+#define __XML_XMLREADER_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+#include <libxml/xmlerror.h>
+#include <libxml/xmlIO.h>
+#ifdef LIBXML_RELAXNG_ENABLED
+#include <libxml/relaxng.h>
+#endif
+#ifdef LIBXML_SCHEMAS_ENABLED
+#include <libxml/xmlschemas.h>
+#endif
+#include <libxml/parser.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlParserSeverities:
+ *
+ * How severe an error callback is when the per-reader error callback API
+ * is used.
+ */
+typedef enum {
+    XML_PARSER_SEVERITY_VALIDITY_WARNING = 1,
+    XML_PARSER_SEVERITY_VALIDITY_ERROR = 2,
+    XML_PARSER_SEVERITY_WARNING = 3,
+    XML_PARSER_SEVERITY_ERROR = 4
+} xmlParserSeverities;
+
+#ifdef LIBXML_READER_ENABLED
+
+/**
+ * xmlTextReaderMode:
+ *
+ * Internal state values for the reader.
+ */
+typedef enum {
+    XML_TEXTREADER_MODE_INITIAL = 0,
+    XML_TEXTREADER_MODE_INTERACTIVE = 1,
+    XML_TEXTREADER_MODE_ERROR = 2,
+    XML_TEXTREADER_MODE_EOF =3,
+    XML_TEXTREADER_MODE_CLOSED = 4,
+    XML_TEXTREADER_MODE_READING = 5
+} xmlTextReaderMode;
+
+/**
+ * xmlParserProperties:
+ *
+ * Some common options to use with xmlTextReaderSetParserProp, but it
+ * is better to use xmlParserOption and the xmlReaderNewxxx and
+ * xmlReaderForxxx APIs now.
+ */
+typedef enum {
+    XML_PARSER_LOADDTD = 1,
+    XML_PARSER_DEFAULTATTRS = 2,
+    XML_PARSER_VALIDATE = 3,
+    XML_PARSER_SUBST_ENTITIES = 4
+} xmlParserProperties;
+
+/**
+ * xmlReaderTypes:
+ *
+ * Predefined constants for the different types of nodes.
+ */
+typedef enum {
+    XML_READER_TYPE_NONE = 0,
+    XML_READER_TYPE_ELEMENT = 1,
+    XML_READER_TYPE_ATTRIBUTE = 2,
+    XML_READER_TYPE_TEXT = 3,
+    XML_READER_TYPE_CDATA = 4,
+    XML_READER_TYPE_ENTITY_REFERENCE = 5,
+    XML_READER_TYPE_ENTITY = 6,
+    XML_READER_TYPE_PROCESSING_INSTRUCTION = 7,
+    XML_READER_TYPE_COMMENT = 8,
+    XML_READER_TYPE_DOCUMENT = 9,
+    XML_READER_TYPE_DOCUMENT_TYPE = 10,
+    XML_READER_TYPE_DOCUMENT_FRAGMENT = 11,
+    XML_READER_TYPE_NOTATION = 12,
+    XML_READER_TYPE_WHITESPACE = 13,
+    XML_READER_TYPE_SIGNIFICANT_WHITESPACE = 14,
+    XML_READER_TYPE_END_ELEMENT = 15,
+    XML_READER_TYPE_END_ENTITY = 16,
+    XML_READER_TYPE_XML_DECLARATION = 17
+} xmlReaderTypes;
+
+/**
+ * xmlTextReader:
+ *
+ * Structure for an xmlReader context.
+ */
+typedef struct _xmlTextReader xmlTextReader;
+
+/**
+ * xmlTextReaderPtr:
+ *
+ * Pointer to an xmlReader context.
+ */
+typedef xmlTextReader *xmlTextReaderPtr;
+
+/*
+ * Constructors & Destructor
+ */
+XMLPUBFUN xmlTextReaderPtr
+			xmlNewTextReader	(xmlParserInputBufferPtr input,
+	                                         const char *URI);
+XMLPUBFUN xmlTextReaderPtr
+			xmlNewTextReaderFilename(const char *URI);
+
+XMLPUBFUN void
+			xmlFreeTextReader	(xmlTextReaderPtr reader);
+
+XMLPUBFUN int
+            xmlTextReaderSetup(xmlTextReaderPtr reader,
+                   xmlParserInputBufferPtr input, const char *URL,
+                   const char *encoding, int options);
+XMLPUBFUN void
+            xmlTextReaderSetMaxAmplification(xmlTextReaderPtr reader,
+                   unsigned maxAmpl);
+XMLPUBFUN const xmlError *
+            xmlTextReaderGetLastError(xmlTextReaderPtr reader);
+
+/*
+ * Iterators
+ */
+XMLPUBFUN int
+			xmlTextReaderRead	(xmlTextReaderPtr reader);
+
+#ifdef LIBXML_WRITER_ENABLED
+XMLPUBFUN xmlChar *
+			xmlTextReaderReadInnerXml(xmlTextReaderPtr reader);
+
+XMLPUBFUN xmlChar *
+			xmlTextReaderReadOuterXml(xmlTextReaderPtr reader);
+#endif
+
+XMLPUBFUN xmlChar *
+			xmlTextReaderReadString	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderReadAttributeValue(xmlTextReaderPtr reader);
+
+/*
+ * Attributes of the node
+ */
+XMLPUBFUN int
+			xmlTextReaderAttributeCount(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderDepth	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderHasAttributes(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderHasValue(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderIsDefault	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderNodeType	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderQuoteChar	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+			xmlTextReaderReadState	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+                        xmlTextReaderIsNamespaceDecl(xmlTextReaderPtr reader);
+
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstBaseUri	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstLocalName	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstName	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstNamespaceUri(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstPrefix	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstXmlLang	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstString	(xmlTextReaderPtr reader,
+						 const xmlChar *str);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstValue	(xmlTextReaderPtr reader);
+
+/*
+ * use the Const version of the routine for
+ * better performance and simpler code
+ */
+XMLPUBFUN xmlChar *
+			xmlTextReaderBaseUri	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderLocalName	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderName	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderNamespaceUri(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderPrefix	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderXmlLang	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+			xmlTextReaderValue	(xmlTextReaderPtr reader);
+
+/*
+ * Methods of the XmlTextReader
+ */
+XMLPUBFUN int
+		    xmlTextReaderClose		(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+		    xmlTextReaderGetAttributeNo	(xmlTextReaderPtr reader,
+						 int no);
+XMLPUBFUN xmlChar *
+		    xmlTextReaderGetAttribute	(xmlTextReaderPtr reader,
+						 const xmlChar *name);
+XMLPUBFUN xmlChar *
+		    xmlTextReaderGetAttributeNs	(xmlTextReaderPtr reader,
+						 const xmlChar *localName,
+						 const xmlChar *namespaceURI);
+XMLPUBFUN xmlParserInputBufferPtr
+		    xmlTextReaderGetRemainder	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlChar *
+		    xmlTextReaderLookupNamespace(xmlTextReaderPtr reader,
+						 const xmlChar *prefix);
+XMLPUBFUN int
+		    xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader,
+						 int no);
+XMLPUBFUN int
+		    xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader,
+						 const xmlChar *name);
+XMLPUBFUN int
+		    xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,
+						 const xmlChar *localName,
+						 const xmlChar *namespaceURI);
+XMLPUBFUN int
+		    xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderMoveToElement	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderNormalization	(xmlTextReaderPtr reader);
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstEncoding  (xmlTextReaderPtr reader);
+
+/*
+ * Extensions
+ */
+XMLPUBFUN int
+		    xmlTextReaderSetParserProp	(xmlTextReaderPtr reader,
+						 int prop,
+						 int value);
+XMLPUBFUN int
+		    xmlTextReaderGetParserProp	(xmlTextReaderPtr reader,
+						 int prop);
+XMLPUBFUN xmlNodePtr
+		    xmlTextReaderCurrentNode	(xmlTextReaderPtr reader);
+
+XMLPUBFUN int
+            xmlTextReaderGetParserLineNumber(xmlTextReaderPtr reader);
+
+XMLPUBFUN int
+            xmlTextReaderGetParserColumnNumber(xmlTextReaderPtr reader);
+
+XMLPUBFUN xmlNodePtr
+		    xmlTextReaderPreserve	(xmlTextReaderPtr reader);
+#ifdef LIBXML_PATTERN_ENABLED
+XMLPUBFUN int
+		    xmlTextReaderPreservePattern(xmlTextReaderPtr reader,
+						 const xmlChar *pattern,
+						 const xmlChar **namespaces);
+#endif /* LIBXML_PATTERN_ENABLED */
+XMLPUBFUN xmlDocPtr
+		    xmlTextReaderCurrentDoc	(xmlTextReaderPtr reader);
+XMLPUBFUN xmlNodePtr
+		    xmlTextReaderExpand		(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderNext		(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderNextSibling	(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderIsValid	(xmlTextReaderPtr reader);
+#ifdef LIBXML_RELAXNG_ENABLED
+XMLPUBFUN int
+		    xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader,
+						 const char *rng);
+XMLPUBFUN int
+		    xmlTextReaderRelaxNGValidateCtxt(xmlTextReaderPtr reader,
+						 xmlRelaxNGValidCtxtPtr ctxt,
+						 int options);
+
+XMLPUBFUN int
+		    xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader,
+						 xmlRelaxNGPtr schema);
+#endif
+#ifdef LIBXML_SCHEMAS_ENABLED
+XMLPUBFUN int
+		    xmlTextReaderSchemaValidate	(xmlTextReaderPtr reader,
+						 const char *xsd);
+XMLPUBFUN int
+		    xmlTextReaderSchemaValidateCtxt(xmlTextReaderPtr reader,
+						 xmlSchemaValidCtxtPtr ctxt,
+						 int options);
+XMLPUBFUN int
+		    xmlTextReaderSetSchema	(xmlTextReaderPtr reader,
+						 xmlSchemaPtr schema);
+#endif
+XMLPUBFUN const xmlChar *
+		    xmlTextReaderConstXmlVersion(xmlTextReaderPtr reader);
+XMLPUBFUN int
+		    xmlTextReaderStandalone     (xmlTextReaderPtr reader);
+
+
+/*
+ * Index lookup
+ */
+XMLPUBFUN long
+		xmlTextReaderByteConsumed	(xmlTextReaderPtr reader);
+
+/*
+ * New more complete APIs for simpler creation and reuse of readers
+ */
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderWalker		(xmlDocPtr doc);
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderForDoc		(const xmlChar * cur,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderForFile	(const char *filename,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderForMemory	(const char *buffer,
+					 int size,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderForFd		(int fd,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN xmlTextReaderPtr
+		xmlReaderForIO		(xmlInputReadCallback ioread,
+					 xmlInputCloseCallback ioclose,
+					 void *ioctx,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+
+XMLPUBFUN int
+		xmlReaderNewWalker	(xmlTextReaderPtr reader,
+					 xmlDocPtr doc);
+XMLPUBFUN int
+		xmlReaderNewDoc		(xmlTextReaderPtr reader,
+					 const xmlChar * cur,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN int
+		xmlReaderNewFile	(xmlTextReaderPtr reader,
+					 const char *filename,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN int
+		xmlReaderNewMemory	(xmlTextReaderPtr reader,
+					 const char *buffer,
+					 int size,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN int
+		xmlReaderNewFd		(xmlTextReaderPtr reader,
+					 int fd,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN int
+		xmlReaderNewIO		(xmlTextReaderPtr reader,
+					 xmlInputReadCallback ioread,
+					 xmlInputCloseCallback ioclose,
+					 void *ioctx,
+					 const char *URL,
+					 const char *encoding,
+					 int options);
+/*
+ * Error handling extensions
+ */
+typedef void *  xmlTextReaderLocatorPtr;
+
+/**
+ * xmlTextReaderErrorFunc:
+ * @arg: the user argument
+ * @msg: the message
+ * @severity: the severity of the error
+ * @locator: a locator indicating where the error occurred
+ *
+ * Signature of an error callback from a reader parser
+ */
+typedef void (*xmlTextReaderErrorFunc)(void *arg,
+					       const char *msg,
+					       xmlParserSeverities severity,
+					       xmlTextReaderLocatorPtr locator);
+XMLPUBFUN int
+	    xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator);
+XMLPUBFUN xmlChar *
+	    xmlTextReaderLocatorBaseURI (xmlTextReaderLocatorPtr locator);
+XMLPUBFUN void
+	    xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader,
+					 xmlTextReaderErrorFunc f,
+					 void *arg);
+XMLPUBFUN void
+	    xmlTextReaderSetStructuredErrorHandler(xmlTextReaderPtr reader,
+						   xmlStructuredErrorFunc f,
+						   void *arg);
+XMLPUBFUN void
+	    xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader,
+					 xmlTextReaderErrorFunc *f,
+					 void **arg);
+
+XMLPUBFUN void
+	    xmlTextReaderSetResourceLoader(xmlTextReaderPtr reader,
+					   xmlResourceLoader loader,
+					   void *data);
+
+#endif /* LIBXML_READER_ENABLED */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XMLREADER_H__ */
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlregexp.h

@@ -0,0 +1,116 @@
+/*
+ * Summary: regular expressions handling
+ * Description: basic API for libxml regular expressions handling used
+ *              for XML Schemas and validation.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_REGEXP_H__
+#define __XML_REGEXP_H__
+
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/xmlstring.h>
+
+#ifdef LIBXML_REGEXP_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlRegexpPtr:
+ *
+ * A libxml regular expression, they can actually be far more complex
+ * thank the POSIX regex expressions.
+ */
+typedef struct _xmlRegexp xmlRegexp;
+typedef xmlRegexp *xmlRegexpPtr;
+
+/**
+ * xmlRegExecCtxtPtr:
+ *
+ * A libxml progressive regular expression evaluation context
+ */
+typedef struct _xmlRegExecCtxt xmlRegExecCtxt;
+typedef xmlRegExecCtxt *xmlRegExecCtxtPtr;
+
+/*
+ * The POSIX like API
+ */
+XMLPUBFUN xmlRegexpPtr
+		    xmlRegexpCompile	(const xmlChar *regexp);
+XMLPUBFUN void			 xmlRegFreeRegexp(xmlRegexpPtr regexp);
+XMLPUBFUN int
+		    xmlRegexpExec	(xmlRegexpPtr comp,
+					 const xmlChar *value);
+XML_DEPRECATED
+XMLPUBFUN void
+		    xmlRegexpPrint	(FILE *output,
+					 xmlRegexpPtr regexp);
+XMLPUBFUN int
+		    xmlRegexpIsDeterminist(xmlRegexpPtr comp);
+
+/**
+ * xmlRegExecCallbacks:
+ * @exec: the regular expression context
+ * @token: the current token string
+ * @transdata: transition data
+ * @inputdata: input data
+ *
+ * Callback function when doing a transition in the automata
+ */
+typedef void (*xmlRegExecCallbacks) (xmlRegExecCtxtPtr exec,
+	                             const xmlChar *token,
+				     void *transdata,
+				     void *inputdata);
+
+/*
+ * The progressive API
+ */
+XML_DEPRECATED
+XMLPUBFUN xmlRegExecCtxtPtr
+		    xmlRegNewExecCtxt	(xmlRegexpPtr comp,
+					 xmlRegExecCallbacks callback,
+					 void *data);
+XML_DEPRECATED
+XMLPUBFUN void
+		    xmlRegFreeExecCtxt	(xmlRegExecCtxtPtr exec);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlRegExecPushString(xmlRegExecCtxtPtr exec,
+					 const xmlChar *value,
+					 void *data);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlRegExecPushString2(xmlRegExecCtxtPtr exec,
+					 const xmlChar *value,
+					 const xmlChar *value2,
+					 void *data);
+
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlRegExecNextValues(xmlRegExecCtxtPtr exec,
+					 int *nbval,
+					 int *nbneg,
+					 xmlChar **values,
+					 int *terminal);
+XML_DEPRECATED
+XMLPUBFUN int
+		    xmlRegExecErrInfo	(xmlRegExecCtxtPtr exec,
+					 const xmlChar **string,
+					 int *nbval,
+					 int *nbneg,
+					 xmlChar **values,
+					 int *terminal);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_REGEXP_ENABLED */
+
+#endif /*__XML_REGEXP_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlsave.h

@@ -0,0 +1,111 @@
+/*
+ * Summary: the XML document serializer
+ * Description: API to save document or subtree of document
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XMLSAVE_H__
+#define __XML_XMLSAVE_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/tree.h>
+#include <libxml/encoding.h>
+#include <libxml/xmlIO.h>
+
+#ifdef LIBXML_OUTPUT_ENABLED
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlSaveOption:
+ *
+ * This is the set of XML save options that can be passed down
+ * to the xmlSaveToFd() and similar calls.
+ */
+typedef enum {
+    XML_SAVE_FORMAT     = 1<<0,	/* format save output */
+    XML_SAVE_NO_DECL    = 1<<1,	/* drop the xml declaration */
+    XML_SAVE_NO_EMPTY	= 1<<2, /* no empty tags */
+    XML_SAVE_NO_XHTML	= 1<<3, /* disable XHTML1 specific rules */
+    XML_SAVE_XHTML	= 1<<4, /* force XHTML1 specific rules */
+    XML_SAVE_AS_XML     = 1<<5, /* force XML serialization on HTML doc */
+    XML_SAVE_AS_HTML    = 1<<6, /* force HTML serialization on XML doc */
+    XML_SAVE_WSNONSIG   = 1<<7, /* format with non-significant whitespace */
+    /* Available since 2.14.0 */
+    XML_SAVE_EMPTY      = 1<<8, /* force empty tags, overriding global */
+    XML_SAVE_NO_INDENT  = 1<<9, /* disable indenting */
+    XML_SAVE_INDENT     = 1<<10 /* force indenting, overriding global */
+} xmlSaveOption;
+
+
+typedef struct _xmlSaveCtxt xmlSaveCtxt;
+typedef xmlSaveCtxt *xmlSaveCtxtPtr;
+
+XMLPUBFUN xmlSaveCtxtPtr
+		xmlSaveToFd		(int fd,
+					 const char *encoding,
+					 int options);
+XMLPUBFUN xmlSaveCtxtPtr
+		xmlSaveToFilename	(const char *filename,
+					 const char *encoding,
+					 int options);
+
+XMLPUBFUN xmlSaveCtxtPtr
+		xmlSaveToBuffer		(xmlBufferPtr buffer,
+					 const char *encoding,
+					 int options);
+
+XMLPUBFUN xmlSaveCtxtPtr
+		xmlSaveToIO		(xmlOutputWriteCallback iowrite,
+					 xmlOutputCloseCallback ioclose,
+					 void *ioctx,
+					 const char *encoding,
+					 int options);
+
+XMLPUBFUN long
+		xmlSaveDoc		(xmlSaveCtxtPtr ctxt,
+					 xmlDocPtr doc);
+XMLPUBFUN long
+		xmlSaveTree		(xmlSaveCtxtPtr ctxt,
+					 xmlNodePtr node);
+
+XMLPUBFUN int
+		xmlSaveFlush		(xmlSaveCtxtPtr ctxt);
+XMLPUBFUN int
+		xmlSaveClose		(xmlSaveCtxtPtr ctxt);
+XMLPUBFUN xmlParserErrors
+		xmlSaveFinish		(xmlSaveCtxtPtr ctxt);
+XMLPUBFUN int
+		xmlSaveSetIndentString	(xmlSaveCtxtPtr ctxt,
+					 const char *indent);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlSaveSetEscape	(xmlSaveCtxtPtr ctxt,
+					 xmlCharEncodingOutputFunc escape);
+XML_DEPRECATED
+XMLPUBFUN int
+		xmlSaveSetAttrEscape	(xmlSaveCtxtPtr ctxt,
+					 xmlCharEncodingOutputFunc escape);
+
+XML_DEPRECATED
+XMLPUBFUN int
+                xmlThrDefIndentTreeOutput(int v);
+XML_DEPRECATED
+XMLPUBFUN const char *
+                xmlThrDefTreeIndentString(const char * v);
+XML_DEPRECATED
+XMLPUBFUN int
+                xmlThrDefSaveNoEmptyTags(int v);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_OUTPUT_ENABLED */
+#endif /* __XML_XMLSAVE_H__ */
+
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlschemas.h

@@ -0,0 +1,254 @@
+/*
+ * Summary: incomplete XML Schemas structure implementation
+ * Description: interface to the XML Schemas handling and schema validity
+ *              checking, it is incomplete right now.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_SCHEMA_H__
+#define __XML_SCHEMA_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_SCHEMAS_ENABLED
+
+#include <stdio.h>
+#include <libxml/encoding.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xmlerror.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * This error codes are obsolete; not used any more.
+ */
+typedef enum {
+    XML_SCHEMAS_ERR_OK		= 0,
+    XML_SCHEMAS_ERR_NOROOT	= 1,
+    XML_SCHEMAS_ERR_UNDECLAREDELEM,
+    XML_SCHEMAS_ERR_NOTTOPLEVEL,
+    XML_SCHEMAS_ERR_MISSING,
+    XML_SCHEMAS_ERR_WRONGELEM,
+    XML_SCHEMAS_ERR_NOTYPE,
+    XML_SCHEMAS_ERR_NOROLLBACK,
+    XML_SCHEMAS_ERR_ISABSTRACT,
+    XML_SCHEMAS_ERR_NOTEMPTY,
+    XML_SCHEMAS_ERR_ELEMCONT,
+    XML_SCHEMAS_ERR_HAVEDEFAULT,
+    XML_SCHEMAS_ERR_NOTNILLABLE,
+    XML_SCHEMAS_ERR_EXTRACONTENT,
+    XML_SCHEMAS_ERR_INVALIDATTR,
+    XML_SCHEMAS_ERR_INVALIDELEM,
+    XML_SCHEMAS_ERR_NOTDETERMINIST,
+    XML_SCHEMAS_ERR_CONSTRUCT,
+    XML_SCHEMAS_ERR_INTERNAL,
+    XML_SCHEMAS_ERR_NOTSIMPLE,
+    XML_SCHEMAS_ERR_ATTRUNKNOWN,
+    XML_SCHEMAS_ERR_ATTRINVALID,
+    XML_SCHEMAS_ERR_VALUE,
+    XML_SCHEMAS_ERR_FACET,
+    XML_SCHEMAS_ERR_,
+    XML_SCHEMAS_ERR_XXX
+} xmlSchemaValidError;
+
+/*
+* ATTENTION: Change xmlSchemaSetValidOptions's check
+* for invalid values, if adding to the validation
+* options below.
+*/
+/**
+ * xmlSchemaValidOption:
+ *
+ * This is the set of XML Schema validation options.
+ */
+typedef enum {
+    XML_SCHEMA_VAL_VC_I_CREATE			= 1<<0
+	/* Default/fixed: create an attribute node
+	* or an element's text node on the instance.
+	*/
+} xmlSchemaValidOption;
+
+/*
+    XML_SCHEMA_VAL_XSI_ASSEMBLE			= 1<<1,
+	* assemble schemata using
+	* xsi:schemaLocation and
+	* xsi:noNamespaceSchemaLocation
+*/
+
+/**
+ * The schemas related types are kept internal
+ */
+typedef struct _xmlSchema xmlSchema;
+typedef xmlSchema *xmlSchemaPtr;
+
+/**
+ * xmlSchemaValidityErrorFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of an error callback from an XSD validation
+ */
+typedef void (*xmlSchemaValidityErrorFunc)
+                 (void *ctx, const char *msg, ...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * xmlSchemaValidityWarningFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of a warning callback from an XSD validation
+ */
+typedef void (*xmlSchemaValidityWarningFunc)
+                 (void *ctx, const char *msg, ...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * A schemas validation context
+ */
+typedef struct _xmlSchemaParserCtxt xmlSchemaParserCtxt;
+typedef xmlSchemaParserCtxt *xmlSchemaParserCtxtPtr;
+
+typedef struct _xmlSchemaValidCtxt xmlSchemaValidCtxt;
+typedef xmlSchemaValidCtxt *xmlSchemaValidCtxtPtr;
+
+/**
+ * xmlSchemaValidityLocatorFunc:
+ * @ctx: user provided context
+ * @file: returned file information
+ * @line: returned line information
+ *
+ * A schemas validation locator, a callback called by the validator.
+ * This is used when file or node information are not available
+ * to find out what file and line number are affected
+ *
+ * Returns: 0 in case of success and -1 in case of error
+ */
+
+typedef int (*xmlSchemaValidityLocatorFunc) (void *ctx,
+                           const char **file, unsigned long *line);
+
+/*
+ * Interfaces for parsing.
+ */
+XMLPUBFUN xmlSchemaParserCtxtPtr
+	    xmlSchemaNewParserCtxt	(const char *URL);
+XMLPUBFUN xmlSchemaParserCtxtPtr
+	    xmlSchemaNewMemParserCtxt	(const char *buffer,
+					 int size);
+XMLPUBFUN xmlSchemaParserCtxtPtr
+	    xmlSchemaNewDocParserCtxt	(xmlDocPtr doc);
+XMLPUBFUN void
+	    xmlSchemaFreeParserCtxt	(xmlSchemaParserCtxtPtr ctxt);
+XMLPUBFUN void
+	    xmlSchemaSetParserErrors	(xmlSchemaParserCtxtPtr ctxt,
+					 xmlSchemaValidityErrorFunc err,
+					 xmlSchemaValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN void
+	    xmlSchemaSetParserStructuredErrors(xmlSchemaParserCtxtPtr ctxt,
+					 xmlStructuredErrorFunc serror,
+					 void *ctx);
+XMLPUBFUN int
+	    xmlSchemaGetParserErrors	(xmlSchemaParserCtxtPtr ctxt,
+					xmlSchemaValidityErrorFunc * err,
+					xmlSchemaValidityWarningFunc * warn,
+					void **ctx);
+XMLPUBFUN void
+	    xmlSchemaSetResourceLoader	(xmlSchemaParserCtxtPtr ctxt,
+					 xmlResourceLoader loader,
+					 void *data);
+XMLPUBFUN int
+	    xmlSchemaIsValid		(xmlSchemaValidCtxtPtr ctxt);
+
+XMLPUBFUN xmlSchemaPtr
+	    xmlSchemaParse		(xmlSchemaParserCtxtPtr ctxt);
+XMLPUBFUN void
+	    xmlSchemaFree		(xmlSchemaPtr schema);
+#ifdef LIBXML_DEBUG_ENABLED
+XMLPUBFUN void
+	    xmlSchemaDump		(FILE *output,
+					 xmlSchemaPtr schema);
+#endif /* LIBXML_DEBUG_ENABLED */
+/*
+ * Interfaces for validating
+ */
+XMLPUBFUN void
+	    xmlSchemaSetValidErrors	(xmlSchemaValidCtxtPtr ctxt,
+					 xmlSchemaValidityErrorFunc err,
+					 xmlSchemaValidityWarningFunc warn,
+					 void *ctx);
+XMLPUBFUN void
+	    xmlSchemaSetValidStructuredErrors(xmlSchemaValidCtxtPtr ctxt,
+					 xmlStructuredErrorFunc serror,
+					 void *ctx);
+XMLPUBFUN int
+	    xmlSchemaGetValidErrors	(xmlSchemaValidCtxtPtr ctxt,
+					 xmlSchemaValidityErrorFunc *err,
+					 xmlSchemaValidityWarningFunc *warn,
+					 void **ctx);
+XMLPUBFUN int
+	    xmlSchemaSetValidOptions	(xmlSchemaValidCtxtPtr ctxt,
+					 int options);
+XMLPUBFUN void
+            xmlSchemaValidateSetFilename(xmlSchemaValidCtxtPtr vctxt,
+	                                 const char *filename);
+XMLPUBFUN int
+	    xmlSchemaValidCtxtGetOptions(xmlSchemaValidCtxtPtr ctxt);
+
+XMLPUBFUN xmlSchemaValidCtxtPtr
+	    xmlSchemaNewValidCtxt	(xmlSchemaPtr schema);
+XMLPUBFUN void
+	    xmlSchemaFreeValidCtxt	(xmlSchemaValidCtxtPtr ctxt);
+XMLPUBFUN int
+	    xmlSchemaValidateDoc	(xmlSchemaValidCtxtPtr ctxt,
+					 xmlDocPtr instance);
+XMLPUBFUN int
+            xmlSchemaValidateOneElement (xmlSchemaValidCtxtPtr ctxt,
+			                 xmlNodePtr elem);
+XMLPUBFUN int
+	    xmlSchemaValidateStream	(xmlSchemaValidCtxtPtr ctxt,
+					 xmlParserInputBufferPtr input,
+					 xmlCharEncoding enc,
+					 const xmlSAXHandler *sax,
+					 void *user_data);
+XMLPUBFUN int
+	    xmlSchemaValidateFile	(xmlSchemaValidCtxtPtr ctxt,
+					 const char * filename,
+					 int options);
+
+XMLPUBFUN xmlParserCtxtPtr
+	    xmlSchemaValidCtxtGetParserCtxt(xmlSchemaValidCtxtPtr ctxt);
+
+/*
+ * Interface to insert Schemas SAX validation in a SAX stream
+ */
+typedef struct _xmlSchemaSAXPlug xmlSchemaSAXPlugStruct;
+typedef xmlSchemaSAXPlugStruct *xmlSchemaSAXPlugPtr;
+
+XMLPUBFUN xmlSchemaSAXPlugPtr
+            xmlSchemaSAXPlug		(xmlSchemaValidCtxtPtr ctxt,
+					 xmlSAXHandlerPtr *sax,
+					 void **user_data);
+XMLPUBFUN int
+            xmlSchemaSAXUnplug		(xmlSchemaSAXPlugPtr plug);
+
+
+XMLPUBFUN void
+            xmlSchemaValidateSetLocator	(xmlSchemaValidCtxtPtr vctxt,
+					 xmlSchemaValidityLocatorFunc f,
+					 void *ctxt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_SCHEMAS_ENABLED */
+#endif /* __XML_SCHEMA_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlschemastypes.h

@@ -0,0 +1,152 @@
+/*
+ * Summary: implementation of XML Schema Datatypes
+ * Description: module providing the XML Schema Datatypes implementation
+ *              both definition and validity checking
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+
+#ifndef __XML_SCHEMA_TYPES_H__
+#define __XML_SCHEMA_TYPES_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_SCHEMAS_ENABLED
+
+#include <libxml/schemasInternals.h>
+#include <libxml/xmlschemas.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    XML_SCHEMA_WHITESPACE_UNKNOWN = 0,
+    XML_SCHEMA_WHITESPACE_PRESERVE = 1,
+    XML_SCHEMA_WHITESPACE_REPLACE = 2,
+    XML_SCHEMA_WHITESPACE_COLLAPSE = 3
+} xmlSchemaWhitespaceValueType;
+
+XMLPUBFUN int
+		xmlSchemaInitTypes		(void);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlSchemaCleanupTypes		(void);
+XMLPUBFUN xmlSchemaTypePtr
+		xmlSchemaGetPredefinedType	(const xmlChar *name,
+						 const xmlChar *ns);
+XMLPUBFUN int
+		xmlSchemaValidatePredefinedType	(xmlSchemaTypePtr type,
+						 const xmlChar *value,
+						 xmlSchemaValPtr *val);
+XMLPUBFUN int
+		xmlSchemaValPredefTypeNode	(xmlSchemaTypePtr type,
+						 const xmlChar *value,
+						 xmlSchemaValPtr *val,
+						 xmlNodePtr node);
+XMLPUBFUN int
+		xmlSchemaValidateFacet		(xmlSchemaTypePtr base,
+						 xmlSchemaFacetPtr facet,
+						 const xmlChar *value,
+						 xmlSchemaValPtr val);
+XMLPUBFUN int
+		xmlSchemaValidateFacetWhtsp	(xmlSchemaFacetPtr facet,
+						 xmlSchemaWhitespaceValueType fws,
+						 xmlSchemaValType valType,
+						 const xmlChar *value,
+						 xmlSchemaValPtr val,
+						 xmlSchemaWhitespaceValueType ws);
+XMLPUBFUN void
+		xmlSchemaFreeValue		(xmlSchemaValPtr val);
+XMLPUBFUN xmlSchemaFacetPtr
+		xmlSchemaNewFacet		(void);
+XMLPUBFUN int
+		xmlSchemaCheckFacet		(xmlSchemaFacetPtr facet,
+						 xmlSchemaTypePtr typeDecl,
+						 xmlSchemaParserCtxtPtr ctxt,
+						 const xmlChar *name);
+XMLPUBFUN void
+		xmlSchemaFreeFacet		(xmlSchemaFacetPtr facet);
+XMLPUBFUN int
+		xmlSchemaCompareValues		(xmlSchemaValPtr x,
+						 xmlSchemaValPtr y);
+XMLPUBFUN xmlSchemaTypePtr
+    xmlSchemaGetBuiltInListSimpleTypeItemType	(xmlSchemaTypePtr type);
+XMLPUBFUN int
+    xmlSchemaValidateListSimpleTypeFacet	(xmlSchemaFacetPtr facet,
+						 const xmlChar *value,
+						 unsigned long actualLen,
+						 unsigned long *expectedLen);
+XMLPUBFUN xmlSchemaTypePtr
+		xmlSchemaGetBuiltInType		(xmlSchemaValType type);
+XMLPUBFUN int
+		xmlSchemaIsBuiltInTypeFacet	(xmlSchemaTypePtr type,
+						 int facetType);
+XMLPUBFUN xmlChar *
+		xmlSchemaCollapseString		(const xmlChar *value);
+XMLPUBFUN xmlChar *
+		xmlSchemaWhiteSpaceReplace	(const xmlChar *value);
+XMLPUBFUN unsigned long 
+		xmlSchemaGetFacetValueAsULong	(xmlSchemaFacetPtr facet);
+XMLPUBFUN int
+		xmlSchemaValidateLengthFacet	(xmlSchemaTypePtr type,
+						 xmlSchemaFacetPtr facet,
+						 const xmlChar *value,
+						 xmlSchemaValPtr val,
+						 unsigned long *length);
+XMLPUBFUN int
+		xmlSchemaValidateLengthFacetWhtsp(xmlSchemaFacetPtr facet,
+						  xmlSchemaValType valType,
+						  const xmlChar *value,
+						  xmlSchemaValPtr val,
+						  unsigned long *length,
+						  xmlSchemaWhitespaceValueType ws);
+XMLPUBFUN int
+		xmlSchemaValPredefTypeNodeNoNorm(xmlSchemaTypePtr type,
+						 const xmlChar *value,
+						 xmlSchemaValPtr *val,
+						 xmlNodePtr node);
+XMLPUBFUN int
+		xmlSchemaGetCanonValue		(xmlSchemaValPtr val,
+						 const xmlChar **retValue);
+XMLPUBFUN int
+		xmlSchemaGetCanonValueWhtsp	(xmlSchemaValPtr val,
+						 const xmlChar **retValue,
+						 xmlSchemaWhitespaceValueType ws);
+XMLPUBFUN int
+		xmlSchemaValueAppend		(xmlSchemaValPtr prev,
+						 xmlSchemaValPtr cur);
+XMLPUBFUN xmlSchemaValPtr
+		xmlSchemaValueGetNext		(xmlSchemaValPtr cur);
+XMLPUBFUN const xmlChar *
+		xmlSchemaValueGetAsString	(xmlSchemaValPtr val);
+XMLPUBFUN int
+		xmlSchemaValueGetAsBoolean	(xmlSchemaValPtr val);
+XMLPUBFUN xmlSchemaValPtr
+		xmlSchemaNewStringValue		(xmlSchemaValType type,
+						 const xmlChar *value);
+XMLPUBFUN xmlSchemaValPtr
+		xmlSchemaNewNOTATIONValue	(const xmlChar *name,
+						 const xmlChar *ns);
+XMLPUBFUN xmlSchemaValPtr
+		xmlSchemaNewQNameValue		(const xmlChar *namespaceName,
+						 const xmlChar *localName);
+XMLPUBFUN int
+		xmlSchemaCompareValuesWhtsp	(xmlSchemaValPtr x,
+						 xmlSchemaWhitespaceValueType xws,
+						 xmlSchemaValPtr y,
+						 xmlSchemaWhitespaceValueType yws);
+XMLPUBFUN xmlSchemaValPtr
+		xmlSchemaCopyValue		(xmlSchemaValPtr val);
+XMLPUBFUN xmlSchemaValType
+		xmlSchemaGetValType		(xmlSchemaValPtr val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_SCHEMAS_ENABLED */
+#endif /* __XML_SCHEMA_TYPES_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlstring.h

@@ -0,0 +1,140 @@
+/*
+ * Summary: set of routines to process strings
+ * Description: type and interfaces needed for the internal string handling
+ *              of the library, especially UTF8 processing.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_STRING_H__
+#define __XML_STRING_H__
+
+#include <stdarg.h>
+#include <libxml/xmlversion.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * xmlChar:
+ *
+ * This is a basic byte in an UTF-8 encoded string.
+ * It's unsigned allowing to pinpoint case where char * are assigned
+ * to xmlChar * (possibly making serialization back impossible).
+ */
+typedef unsigned char xmlChar;
+
+/**
+ * BAD_CAST:
+ *
+ * Macro to cast a string to an xmlChar * when one know its safe.
+ */
+#define BAD_CAST (xmlChar *)
+
+/*
+ * xmlChar handling
+ */
+XMLPUBFUN xmlChar *
+                xmlStrdup                (const xmlChar *cur);
+XMLPUBFUN xmlChar *
+                xmlStrndup               (const xmlChar *cur,
+                                         int len);
+XMLPUBFUN xmlChar *
+                xmlCharStrndup           (const char *cur,
+                                         int len);
+XMLPUBFUN xmlChar *
+                xmlCharStrdup            (const char *cur);
+XMLPUBFUN xmlChar *
+                xmlStrsub                (const xmlChar *str,
+                                         int start,
+                                         int len);
+XMLPUBFUN const xmlChar *
+                xmlStrchr                (const xmlChar *str,
+                                         xmlChar val);
+XMLPUBFUN const xmlChar *
+                xmlStrstr                (const xmlChar *str,
+                                         const xmlChar *val);
+XMLPUBFUN const xmlChar *
+                xmlStrcasestr            (const xmlChar *str,
+                                         const xmlChar *val);
+XMLPUBFUN int
+                xmlStrcmp                (const xmlChar *str1,
+                                         const xmlChar *str2);
+XMLPUBFUN int
+                xmlStrncmp               (const xmlChar *str1,
+                                         const xmlChar *str2,
+                                         int len);
+XMLPUBFUN int
+                xmlStrcasecmp            (const xmlChar *str1,
+                                         const xmlChar *str2);
+XMLPUBFUN int
+                xmlStrncasecmp           (const xmlChar *str1,
+                                         const xmlChar *str2,
+                                         int len);
+XMLPUBFUN int
+                xmlStrEqual              (const xmlChar *str1,
+                                         const xmlChar *str2);
+XMLPUBFUN int
+                xmlStrQEqual             (const xmlChar *pref,
+                                         const xmlChar *name,
+                                         const xmlChar *str);
+XMLPUBFUN int
+                xmlStrlen                (const xmlChar *str);
+XMLPUBFUN xmlChar *
+                xmlStrcat                (xmlChar *cur,
+                                         const xmlChar *add);
+XMLPUBFUN xmlChar *
+                xmlStrncat               (xmlChar *cur,
+                                         const xmlChar *add,
+                                         int len);
+XMLPUBFUN xmlChar *
+                xmlStrncatNew            (const xmlChar *str1,
+                                         const xmlChar *str2,
+                                         int len);
+XMLPUBFUN int
+                xmlStrPrintf             (xmlChar *buf,
+                                         int len,
+                                         const char *msg,
+                                         ...) LIBXML_ATTR_FORMAT(3,4);
+XMLPUBFUN int
+                xmlStrVPrintf                (xmlChar *buf,
+                                         int len,
+                                         const char *msg,
+                                         va_list ap) LIBXML_ATTR_FORMAT(3,0);
+
+XMLPUBFUN int
+        xmlGetUTF8Char                   (const unsigned char *utf,
+                                         int *len);
+XMLPUBFUN int
+        xmlCheckUTF8                     (const unsigned char *utf);
+XMLPUBFUN int
+        xmlUTF8Strsize                   (const xmlChar *utf,
+                                         int len);
+XMLPUBFUN xmlChar *
+        xmlUTF8Strndup                   (const xmlChar *utf,
+                                         int len);
+XMLPUBFUN const xmlChar *
+        xmlUTF8Strpos                    (const xmlChar *utf,
+                                         int pos);
+XMLPUBFUN int
+        xmlUTF8Strloc                    (const xmlChar *utf,
+                                         const xmlChar *utfchar);
+XMLPUBFUN xmlChar *
+        xmlUTF8Strsub                    (const xmlChar *utf,
+                                         int start,
+                                         int len);
+XMLPUBFUN int
+        xmlUTF8Strlen                    (const xmlChar *utf);
+XMLPUBFUN int
+        xmlUTF8Size                      (const xmlChar *utf);
+XMLPUBFUN int
+        xmlUTF8Charcmp                   (const xmlChar *utf1,
+                                         const xmlChar *utf2);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __XML_STRING_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlunicode.h

@@ -0,0 +1,15 @@
+/*
+ * Summary: Unicode character APIs
+ * Description: API for the Unicode character APIs
+ *
+ * Deprecated, don't use.
+ */
+
+#ifndef __XML_UNICODE_H__
+#define __XML_UNICODE_H__
+
+#ifdef __GNUC__
+  #warning "libxml/xmlunicode.h is deprecated"
+#endif
+
+#endif /* __XML_UNICODE_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlversion.h

@@ -0,0 +1,332 @@
+/*
+ * Summary: compile-time version information
+ * Description: compile-time version information for the XML library
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_VERSION_H__
+#define __XML_VERSION_H__
+
+/**
+ * LIBXML_DOTTED_VERSION:
+ *
+ * the version string like "1.2.3"
+ */
+#define LIBXML_DOTTED_VERSION "2.14.6"
+
+/**
+ * LIBXML_VERSION:
+ *
+ * the version number: 1.2.3 value is 10203
+ */
+#define LIBXML_VERSION 21406
+
+/**
+ * LIBXML_VERSION_STRING:
+ *
+ * the version number string, 1.2.3 value is "10203"
+ */
+#define LIBXML_VERSION_STRING "21406"
+
+/**
+ * LIBXML_VERSION_EXTRA:
+ *
+ * extra version information, used to show a git commit description
+ */
+#define LIBXML_VERSION_EXTRA ""
+
+/**
+ * LIBXML_TEST_VERSION:
+ *
+ * Macro to check that the libxml version in use is compatible with
+ * the version the software has been compiled against
+ */
+#define LIBXML_TEST_VERSION xmlCheckVersion(21406);
+
+/**
+ * LIBXML_THREAD_ENABLED:
+ *
+ * Whether the thread support is configured in
+ */
+#if 1
+#define LIBXML_THREAD_ENABLED
+#endif
+
+/**
+ * LIBXML_THREAD_ALLOC_ENABLED:
+ *
+ * Whether the allocation hooks are per-thread
+ */
+#if 0
+#define LIBXML_THREAD_ALLOC_ENABLED
+#endif
+
+/**
+ * LIBXML_TREE_ENABLED:
+ *
+ * Always enabled since 2.14.0
+ */
+#define LIBXML_TREE_ENABLED
+
+/**
+ * LIBXML_OUTPUT_ENABLED:
+ *
+ * Whether the serialization/saving support is configured in
+ */
+#if 1
+#define LIBXML_OUTPUT_ENABLED
+#endif
+
+/**
+ * LIBXML_PUSH_ENABLED:
+ *
+ * Whether the push parsing interfaces are configured in
+ */
+#if 1
+#define LIBXML_PUSH_ENABLED
+#endif
+
+/**
+ * LIBXML_READER_ENABLED:
+ *
+ * Whether the xmlReader parsing interface is configured in
+ */
+#if 1
+#define LIBXML_READER_ENABLED
+#endif
+
+/**
+ * LIBXML_PATTERN_ENABLED:
+ *
+ * Whether the xmlPattern node selection interface is configured in
+ */
+#if 1
+#define LIBXML_PATTERN_ENABLED
+#endif
+
+/**
+ * LIBXML_WRITER_ENABLED:
+ *
+ * Whether the xmlWriter saving interface is configured in
+ */
+#if 1
+#define LIBXML_WRITER_ENABLED
+#endif
+
+/**
+ * LIBXML_SAX1_ENABLED:
+ *
+ * Whether the older SAX1 interface is configured in
+ */
+#if 1
+#define LIBXML_SAX1_ENABLED
+#endif
+
+/**
+ * LIBXML_HTTP_ENABLED:
+ *
+ * Whether the HTTP support is configured in
+ */
+#if 0
+#define LIBXML_HTTP_ENABLED
+#endif
+
+/**
+ * LIBXML_VALID_ENABLED:
+ *
+ * Whether the DTD validation support is configured in
+ */
+#if 1
+#define LIBXML_VALID_ENABLED
+#endif
+
+/**
+ * LIBXML_HTML_ENABLED:
+ *
+ * Whether the HTML support is configured in
+ */
+#if 1
+#define LIBXML_HTML_ENABLED
+#endif
+
+/**
+ * LIBXML_LEGACY_ENABLED:
+ *
+ * Removed in 2.14
+ */
+#undef LIBXML_LEGACY_ENABLED
+
+/**
+ * LIBXML_C14N_ENABLED:
+ *
+ * Whether the Canonicalization support is configured in
+ */
+#if 1
+#define LIBXML_C14N_ENABLED
+#endif
+
+/**
+ * LIBXML_CATALOG_ENABLED:
+ *
+ * Whether the Catalog support is configured in
+ */
+#if 1
+#define LIBXML_CATALOG_ENABLED
+#endif
+
+/**
+ * LIBXML_XPATH_ENABLED:
+ *
+ * Whether XPath is configured in
+ */
+#if 1
+#define LIBXML_XPATH_ENABLED
+#endif
+
+/**
+ * LIBXML_XPTR_ENABLED:
+ *
+ * Whether XPointer is configured in
+ */
+#if 1
+#define LIBXML_XPTR_ENABLED
+#endif
+
+/**
+ * LIBXML_XINCLUDE_ENABLED:
+ *
+ * Whether XInclude is configured in
+ */
+#if 1
+#define LIBXML_XINCLUDE_ENABLED
+#endif
+
+/**
+ * LIBXML_ICONV_ENABLED:
+ *
+ * Whether iconv support is available
+ */
+#if 1
+#define LIBXML_ICONV_ENABLED
+#endif
+
+/**
+ * LIBXML_ICU_ENABLED:
+ *
+ * Whether icu support is available
+ */
+#if 0
+#define LIBXML_ICU_ENABLED
+#endif
+
+/**
+ * LIBXML_ISO8859X_ENABLED:
+ *
+ * Whether ISO-8859-* support is made available in case iconv is not
+ */
+#if 1
+#define LIBXML_ISO8859X_ENABLED
+#endif
+
+/**
+ * LIBXML_DEBUG_ENABLED:
+ *
+ * Whether Debugging module is configured in
+ */
+#if 1
+#define LIBXML_DEBUG_ENABLED
+#endif
+
+/**
+ * LIBXML_UNICODE_ENABLED:
+ *
+ * Removed in 2.14
+ */
+#undef LIBXML_UNICODE_ENABLED
+
+/**
+ * LIBXML_REGEXP_ENABLED:
+ *
+ * Whether the regular expressions interfaces are compiled in
+ */
+#if 1
+#define LIBXML_REGEXP_ENABLED
+#endif
+
+/**
+ * LIBXML_AUTOMATA_ENABLED:
+ *
+ * Whether the automata interfaces are compiled in
+ */
+#if 1
+#define LIBXML_AUTOMATA_ENABLED
+#endif
+
+/**
+ * LIBXML_RELAXNG_ENABLED:
+ *
+ * Whether the RelaxNG validation interfaces are compiled in
+ */
+#if 1
+#define LIBXML_RELAXNG_ENABLED
+#endif
+
+/**
+ * LIBXML_SCHEMAS_ENABLED:
+ *
+ * Whether the Schemas validation interfaces are compiled in
+ */
+#if 1
+#define LIBXML_SCHEMAS_ENABLED
+#endif
+
+/**
+ * LIBXML_SCHEMATRON_ENABLED:
+ *
+ * Whether the Schematron validation interfaces are compiled in
+ */
+#if 1
+#define LIBXML_SCHEMATRON_ENABLED
+#endif
+
+/**
+ * LIBXML_MODULES_ENABLED:
+ *
+ * Whether the module interfaces are compiled in
+ */
+#if 1
+#define LIBXML_MODULES_ENABLED
+/**
+ * LIBXML_MODULE_EXTENSION:
+ *
+ * the string suffix used by dynamic modules (usually shared libraries)
+ */
+#define LIBXML_MODULE_EXTENSION ".so" 
+#endif
+
+/**
+ * LIBXML_ZLIB_ENABLED:
+ *
+ * Whether the Zlib support is compiled in
+ */
+#if 1
+#define LIBXML_ZLIB_ENABLED
+#endif
+
+/**
+ * LIBXML_LZMA_ENABLED:
+ *
+ * Whether the Lzma support is compiled in
+ */
+#if 0
+#define LIBXML_LZMA_ENABLED
+#endif
+
+#include <libxml/xmlexports.h>
+
+#endif
+
+

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xmlwriter.h

@@ -0,0 +1,489 @@
+/*
+ * Summary: text writing API for XML
+ * Description: text writing API for XML
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Alfred Mickautsch <alfred@mickautsch.de>
+ */
+
+#ifndef __XML_XMLWRITER_H__
+#define __XML_XMLWRITER_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_WRITER_ENABLED
+
+#include <stdarg.h>
+#include <libxml/xmlIO.h>
+#include <libxml/list.h>
+#include <libxml/xmlstring.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    typedef struct _xmlTextWriter xmlTextWriter;
+    typedef xmlTextWriter *xmlTextWriterPtr;
+
+/*
+ * Constructors & Destructor
+ */
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriter(xmlOutputBufferPtr out);
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriterFilename(const char *uri, int compression);
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriterMemory(xmlBufferPtr buf, int compression);
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriterPushParser(xmlParserCtxtPtr ctxt, int compression);
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriterDoc(xmlDocPtr * doc, int compression);
+    XMLPUBFUN xmlTextWriterPtr
+        xmlNewTextWriterTree(xmlDocPtr doc, xmlNodePtr node,
+                             int compression);
+    XMLPUBFUN void xmlFreeTextWriter(xmlTextWriterPtr writer);
+
+/*
+ * Functions
+ */
+
+
+/*
+ * Document
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartDocument(xmlTextWriterPtr writer,
+                                   const char *version,
+                                   const char *encoding,
+                                   const char *standalone);
+    XMLPUBFUN int xmlTextWriterEndDocument(xmlTextWriterPtr
+                                                   writer);
+
+/*
+ * Comments
+ */
+    XMLPUBFUN int xmlTextWriterStartComment(xmlTextWriterPtr
+                                                    writer);
+    XMLPUBFUN int xmlTextWriterEndComment(xmlTextWriterPtr writer);
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatComment(xmlTextWriterPtr writer,
+                                        const char *format, ...)
+					LIBXML_ATTR_FORMAT(2,3);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatComment(xmlTextWriterPtr writer,
+                                         const char *format,
+                                         va_list argptr)
+					 LIBXML_ATTR_FORMAT(2,0);
+    XMLPUBFUN int xmlTextWriterWriteComment(xmlTextWriterPtr
+                                                    writer,
+                                                    const xmlChar *
+                                                    content);
+
+/*
+ * Elements
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartElement(xmlTextWriterPtr writer,
+                                  const xmlChar * name);
+    XMLPUBFUN int xmlTextWriterStartElementNS(xmlTextWriterPtr
+                                                      writer,
+                                                      const xmlChar *
+                                                      prefix,
+                                                      const xmlChar * name,
+                                                      const xmlChar *
+                                                      namespaceURI);
+    XMLPUBFUN int xmlTextWriterEndElement(xmlTextWriterPtr writer);
+    XMLPUBFUN int xmlTextWriterFullEndElement(xmlTextWriterPtr
+                                                      writer);
+
+/*
+ * Elements conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatElement(xmlTextWriterPtr writer,
+                                        const xmlChar * name,
+                                        const char *format, ...)
+					LIBXML_ATTR_FORMAT(3,4);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatElement(xmlTextWriterPtr writer,
+                                         const xmlChar * name,
+                                         const char *format,
+                                         va_list argptr)
+					 LIBXML_ATTR_FORMAT(3,0);
+    XMLPUBFUN int xmlTextWriterWriteElement(xmlTextWriterPtr
+                                                    writer,
+                                                    const xmlChar * name,
+                                                    const xmlChar *
+                                                    content);
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatElementNS(xmlTextWriterPtr writer,
+                                          const xmlChar * prefix,
+                                          const xmlChar * name,
+                                          const xmlChar * namespaceURI,
+                                          const char *format, ...)
+					  LIBXML_ATTR_FORMAT(5,6);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatElementNS(xmlTextWriterPtr writer,
+                                           const xmlChar * prefix,
+                                           const xmlChar * name,
+                                           const xmlChar * namespaceURI,
+                                           const char *format,
+                                           va_list argptr)
+					   LIBXML_ATTR_FORMAT(5,0);
+    XMLPUBFUN int xmlTextWriterWriteElementNS(xmlTextWriterPtr
+                                                      writer,
+                                                      const xmlChar *
+                                                      prefix,
+                                                      const xmlChar * name,
+                                                      const xmlChar *
+                                                      namespaceURI,
+                                                      const xmlChar *
+                                                      content);
+
+/*
+ * Text
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatRaw(xmlTextWriterPtr writer,
+                                    const char *format, ...)
+				    LIBXML_ATTR_FORMAT(2,3);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatRaw(xmlTextWriterPtr writer,
+                                     const char *format, va_list argptr)
+				     LIBXML_ATTR_FORMAT(2,0);
+    XMLPUBFUN int
+        xmlTextWriterWriteRawLen(xmlTextWriterPtr writer,
+                                 const xmlChar * content, int len);
+    XMLPUBFUN int
+        xmlTextWriterWriteRaw(xmlTextWriterPtr writer,
+                              const xmlChar * content);
+    XMLPUBFUN int xmlTextWriterWriteFormatString(xmlTextWriterPtr
+                                                         writer,
+                                                         const char
+                                                         *format, ...)
+							 LIBXML_ATTR_FORMAT(2,3);
+    XMLPUBFUN int xmlTextWriterWriteVFormatString(xmlTextWriterPtr
+                                                          writer,
+                                                          const char
+                                                          *format,
+                                                          va_list argptr)
+							  LIBXML_ATTR_FORMAT(2,0);
+    XMLPUBFUN int xmlTextWriterWriteString(xmlTextWriterPtr writer,
+                                                   const xmlChar *
+                                                   content);
+    XMLPUBFUN int xmlTextWriterWriteBase64(xmlTextWriterPtr writer,
+                                                   const char *data,
+                                                   int start, int len);
+    XMLPUBFUN int xmlTextWriterWriteBinHex(xmlTextWriterPtr writer,
+                                                   const char *data,
+                                                   int start, int len);
+
+/*
+ * Attributes
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartAttribute(xmlTextWriterPtr writer,
+                                    const xmlChar * name);
+    XMLPUBFUN int xmlTextWriterStartAttributeNS(xmlTextWriterPtr
+                                                        writer,
+                                                        const xmlChar *
+                                                        prefix,
+                                                        const xmlChar *
+                                                        name,
+                                                        const xmlChar *
+                                                        namespaceURI);
+    XMLPUBFUN int xmlTextWriterEndAttribute(xmlTextWriterPtr
+                                                    writer);
+
+/*
+ * Attributes conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatAttribute(xmlTextWriterPtr writer,
+                                          const xmlChar * name,
+                                          const char *format, ...)
+					  LIBXML_ATTR_FORMAT(3,4);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatAttribute(xmlTextWriterPtr writer,
+                                           const xmlChar * name,
+                                           const char *format,
+                                           va_list argptr)
+					   LIBXML_ATTR_FORMAT(3,0);
+    XMLPUBFUN int xmlTextWriterWriteAttribute(xmlTextWriterPtr
+                                                      writer,
+                                                      const xmlChar * name,
+                                                      const xmlChar *
+                                                      content);
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatAttributeNS(xmlTextWriterPtr writer,
+                                            const xmlChar * prefix,
+                                            const xmlChar * name,
+                                            const xmlChar * namespaceURI,
+                                            const char *format, ...)
+					    LIBXML_ATTR_FORMAT(5,6);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatAttributeNS(xmlTextWriterPtr writer,
+                                             const xmlChar * prefix,
+                                             const xmlChar * name,
+                                             const xmlChar * namespaceURI,
+                                             const char *format,
+                                             va_list argptr)
+					     LIBXML_ATTR_FORMAT(5,0);
+    XMLPUBFUN int xmlTextWriterWriteAttributeNS(xmlTextWriterPtr
+                                                        writer,
+                                                        const xmlChar *
+                                                        prefix,
+                                                        const xmlChar *
+                                                        name,
+                                                        const xmlChar *
+                                                        namespaceURI,
+                                                        const xmlChar *
+                                                        content);
+
+/*
+ * PI's
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartPI(xmlTextWriterPtr writer,
+                             const xmlChar * target);
+    XMLPUBFUN int xmlTextWriterEndPI(xmlTextWriterPtr writer);
+
+/*
+ * PI conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatPI(xmlTextWriterPtr writer,
+                                   const xmlChar * target,
+                                   const char *format, ...)
+				   LIBXML_ATTR_FORMAT(3,4);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatPI(xmlTextWriterPtr writer,
+                                    const xmlChar * target,
+                                    const char *format, va_list argptr)
+				    LIBXML_ATTR_FORMAT(3,0);
+    XMLPUBFUN int
+        xmlTextWriterWritePI(xmlTextWriterPtr writer,
+                             const xmlChar * target,
+                             const xmlChar * content);
+
+/**
+ * xmlTextWriterWriteProcessingInstruction:
+ *
+ * This macro maps to xmlTextWriterWritePI
+ */
+#define xmlTextWriterWriteProcessingInstruction xmlTextWriterWritePI
+
+/*
+ * CDATA
+ */
+    XMLPUBFUN int xmlTextWriterStartCDATA(xmlTextWriterPtr writer);
+    XMLPUBFUN int xmlTextWriterEndCDATA(xmlTextWriterPtr writer);
+
+/*
+ * CDATA conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatCDATA(xmlTextWriterPtr writer,
+                                      const char *format, ...)
+				      LIBXML_ATTR_FORMAT(2,3);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatCDATA(xmlTextWriterPtr writer,
+                                       const char *format, va_list argptr)
+				       LIBXML_ATTR_FORMAT(2,0);
+    XMLPUBFUN int
+        xmlTextWriterWriteCDATA(xmlTextWriterPtr writer,
+                                const xmlChar * content);
+
+/*
+ * DTD
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartDTD(xmlTextWriterPtr writer,
+                              const xmlChar * name,
+                              const xmlChar * pubid,
+                              const xmlChar * sysid);
+    XMLPUBFUN int xmlTextWriterEndDTD(xmlTextWriterPtr writer);
+
+/*
+ * DTD conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatDTD(xmlTextWriterPtr writer,
+                                    const xmlChar * name,
+                                    const xmlChar * pubid,
+                                    const xmlChar * sysid,
+                                    const char *format, ...)
+				    LIBXML_ATTR_FORMAT(5,6);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatDTD(xmlTextWriterPtr writer,
+                                     const xmlChar * name,
+                                     const xmlChar * pubid,
+                                     const xmlChar * sysid,
+                                     const char *format, va_list argptr)
+				     LIBXML_ATTR_FORMAT(5,0);
+    XMLPUBFUN int
+        xmlTextWriterWriteDTD(xmlTextWriterPtr writer,
+                              const xmlChar * name,
+                              const xmlChar * pubid,
+                              const xmlChar * sysid,
+                              const xmlChar * subset);
+
+/**
+ * xmlTextWriterWriteDocType:
+ *
+ * this macro maps to xmlTextWriterWriteDTD
+ */
+#define xmlTextWriterWriteDocType xmlTextWriterWriteDTD
+
+/*
+ * DTD element definition
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartDTDElement(xmlTextWriterPtr writer,
+                                     const xmlChar * name);
+    XMLPUBFUN int xmlTextWriterEndDTDElement(xmlTextWriterPtr
+                                                     writer);
+
+/*
+ * DTD element definition conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatDTDElement(xmlTextWriterPtr writer,
+                                           const xmlChar * name,
+                                           const char *format, ...)
+					   LIBXML_ATTR_FORMAT(3,4);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatDTDElement(xmlTextWriterPtr writer,
+                                            const xmlChar * name,
+                                            const char *format,
+                                            va_list argptr)
+					    LIBXML_ATTR_FORMAT(3,0);
+    XMLPUBFUN int xmlTextWriterWriteDTDElement(xmlTextWriterPtr
+                                                       writer,
+                                                       const xmlChar *
+                                                       name,
+                                                       const xmlChar *
+                                                       content);
+
+/*
+ * DTD attribute list definition
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartDTDAttlist(xmlTextWriterPtr writer,
+                                     const xmlChar * name);
+    XMLPUBFUN int xmlTextWriterEndDTDAttlist(xmlTextWriterPtr
+                                                     writer);
+
+/*
+ * DTD attribute list definition conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatDTDAttlist(xmlTextWriterPtr writer,
+                                           const xmlChar * name,
+                                           const char *format, ...)
+					   LIBXML_ATTR_FORMAT(3,4);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatDTDAttlist(xmlTextWriterPtr writer,
+                                            const xmlChar * name,
+                                            const char *format,
+                                            va_list argptr)
+					    LIBXML_ATTR_FORMAT(3,0);
+    XMLPUBFUN int xmlTextWriterWriteDTDAttlist(xmlTextWriterPtr
+                                                       writer,
+                                                       const xmlChar *
+                                                       name,
+                                                       const xmlChar *
+                                                       content);
+
+/*
+ * DTD entity definition
+ */
+    XMLPUBFUN int
+        xmlTextWriterStartDTDEntity(xmlTextWriterPtr writer,
+                                    int pe, const xmlChar * name);
+    XMLPUBFUN int xmlTextWriterEndDTDEntity(xmlTextWriterPtr
+                                                    writer);
+
+/*
+ * DTD entity definition conveniency functions
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteFormatDTDInternalEntity(xmlTextWriterPtr writer,
+                                                  int pe,
+                                                  const xmlChar * name,
+                                                  const char *format, ...)
+						  LIBXML_ATTR_FORMAT(4,5);
+    XMLPUBFUN int
+        xmlTextWriterWriteVFormatDTDInternalEntity(xmlTextWriterPtr writer,
+                                                   int pe,
+                                                   const xmlChar * name,
+                                                   const char *format,
+                                                   va_list argptr)
+						   LIBXML_ATTR_FORMAT(4,0);
+    XMLPUBFUN int
+        xmlTextWriterWriteDTDInternalEntity(xmlTextWriterPtr writer,
+                                            int pe,
+                                            const xmlChar * name,
+                                            const xmlChar * content);
+    XMLPUBFUN int
+        xmlTextWriterWriteDTDExternalEntity(xmlTextWriterPtr writer,
+                                            int pe,
+                                            const xmlChar * name,
+                                            const xmlChar * pubid,
+                                            const xmlChar * sysid,
+                                            const xmlChar * ndataid);
+    XMLPUBFUN int
+        xmlTextWriterWriteDTDExternalEntityContents(xmlTextWriterPtr
+                                                    writer,
+                                                    const xmlChar * pubid,
+                                                    const xmlChar * sysid,
+                                                    const xmlChar *
+                                                    ndataid);
+    XMLPUBFUN int xmlTextWriterWriteDTDEntity(xmlTextWriterPtr
+                                                      writer, int pe,
+                                                      const xmlChar * name,
+                                                      const xmlChar *
+                                                      pubid,
+                                                      const xmlChar *
+                                                      sysid,
+                                                      const xmlChar *
+                                                      ndataid,
+                                                      const xmlChar *
+                                                      content);
+
+/*
+ * DTD notation definition
+ */
+    XMLPUBFUN int
+        xmlTextWriterWriteDTDNotation(xmlTextWriterPtr writer,
+                                      const xmlChar * name,
+                                      const xmlChar * pubid,
+                                      const xmlChar * sysid);
+
+/*
+ * Indentation
+ */
+    XMLPUBFUN int
+        xmlTextWriterSetIndent(xmlTextWriterPtr writer, int indent);
+    XMLPUBFUN int
+        xmlTextWriterSetIndentString(xmlTextWriterPtr writer,
+                                     const xmlChar * str);
+
+    XMLPUBFUN int
+        xmlTextWriterSetQuoteChar(xmlTextWriterPtr writer, xmlChar quotechar);
+
+
+/*
+ * misc
+ */
+    XMLPUBFUN int xmlTextWriterFlush(xmlTextWriterPtr writer);
+    XMLPUBFUN int xmlTextWriterClose(xmlTextWriterPtr writer);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_WRITER_ENABLED */
+
+#endif                          /* __XML_XMLWRITER_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xpath.h

@@ -0,0 +1,569 @@
+/*
+ * Summary: XML Path Language implementation
+ * Description: API for the XML Path Language implementation
+ *
+ * XML Path Language implementation
+ * XPath is a language for addressing parts of an XML document,
+ * designed to be used by both XSLT and XPointer
+ *     http://www.w3.org/TR/xpath
+ *
+ * Implements
+ * W3C Recommendation 16 November 1999
+ *     http://www.w3.org/TR/1999/REC-xpath-19991116
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XPATH_H__
+#define __XML_XPATH_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_XPATH_ENABLED
+
+#include <libxml/xmlerror.h>
+#include <libxml/tree.h>
+#include <libxml/hash.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _xmlXPathContext xmlXPathContext;
+typedef xmlXPathContext *xmlXPathContextPtr;
+typedef struct _xmlXPathParserContext xmlXPathParserContext;
+typedef xmlXPathParserContext *xmlXPathParserContextPtr;
+
+/**
+ * The set of XPath error codes.
+ */
+
+typedef enum {
+    XPATH_EXPRESSION_OK = 0,
+    XPATH_NUMBER_ERROR,
+    XPATH_UNFINISHED_LITERAL_ERROR,
+    XPATH_START_LITERAL_ERROR,
+    XPATH_VARIABLE_REF_ERROR,
+    XPATH_UNDEF_VARIABLE_ERROR,
+    XPATH_INVALID_PREDICATE_ERROR,
+    XPATH_EXPR_ERROR,
+    XPATH_UNCLOSED_ERROR,
+    XPATH_UNKNOWN_FUNC_ERROR,
+    XPATH_INVALID_OPERAND,
+    XPATH_INVALID_TYPE,
+    XPATH_INVALID_ARITY,
+    XPATH_INVALID_CTXT_SIZE,
+    XPATH_INVALID_CTXT_POSITION,
+    XPATH_MEMORY_ERROR,
+    XPTR_SYNTAX_ERROR,
+    XPTR_RESOURCE_ERROR,
+    XPTR_SUB_RESOURCE_ERROR,
+    XPATH_UNDEF_PREFIX_ERROR,
+    XPATH_ENCODING_ERROR,
+    XPATH_INVALID_CHAR_ERROR,
+    XPATH_INVALID_CTXT,
+    XPATH_STACK_ERROR,
+    XPATH_FORBID_VARIABLE_ERROR,
+    XPATH_OP_LIMIT_EXCEEDED,
+    XPATH_RECURSION_LIMIT_EXCEEDED
+} xmlXPathError;
+
+/*
+ * A node-set (an unordered collection of nodes without duplicates).
+ */
+typedef struct _xmlNodeSet xmlNodeSet;
+typedef xmlNodeSet *xmlNodeSetPtr;
+struct _xmlNodeSet {
+    int nodeNr;			/* number of nodes in the set */
+    int nodeMax;		/* size of the array as allocated */
+    xmlNodePtr *nodeTab;	/* array of nodes in no particular order */
+    /* @@ with_ns to check whether namespace nodes should be looked at @@ */
+};
+
+/*
+ * An expression is evaluated to yield an object, which
+ * has one of the following four basic types:
+ *   - node-set
+ *   - boolean
+ *   - number
+ *   - string
+ *
+ * @@ XPointer will add more types !
+ */
+
+typedef enum {
+    XPATH_UNDEFINED = 0,
+    XPATH_NODESET = 1,
+    XPATH_BOOLEAN = 2,
+    XPATH_NUMBER = 3,
+    XPATH_STRING = 4,
+    XPATH_USERS = 8,
+    XPATH_XSLT_TREE = 9  /* An XSLT value tree, non modifiable */
+} xmlXPathObjectType;
+
+/** DOC_DISABLE */
+#define XPATH_POINT 5
+#define XPATH_RANGE 6
+#define XPATH_LOCATIONSET 7
+/** DOC_ENABLE */
+
+typedef struct _xmlXPathObject xmlXPathObject;
+typedef xmlXPathObject *xmlXPathObjectPtr;
+struct _xmlXPathObject {
+    xmlXPathObjectType type;
+    xmlNodeSetPtr nodesetval;
+    int boolval;
+    double floatval;
+    xmlChar *stringval;
+    void *user;
+    int index;
+    void *user2;
+    int index2;
+};
+
+/**
+ * xmlXPathConvertFunc:
+ * @obj:  an XPath object
+ * @type:  the number of the target type
+ *
+ * A conversion function is associated to a type and used to cast
+ * the new type to primitive values.
+ *
+ * Returns -1 in case of error, 0 otherwise
+ */
+typedef int (*xmlXPathConvertFunc) (xmlXPathObjectPtr obj, int type);
+
+/*
+ * Extra type: a name and a conversion function.
+ */
+
+typedef struct _xmlXPathType xmlXPathType;
+typedef xmlXPathType *xmlXPathTypePtr;
+struct _xmlXPathType {
+    const xmlChar         *name;		/* the type name */
+    xmlXPathConvertFunc func;		/* the conversion function */
+};
+
+/*
+ * Extra variable: a name and a value.
+ */
+
+typedef struct _xmlXPathVariable xmlXPathVariable;
+typedef xmlXPathVariable *xmlXPathVariablePtr;
+struct _xmlXPathVariable {
+    const xmlChar       *name;		/* the variable name */
+    xmlXPathObjectPtr value;		/* the value */
+};
+
+/**
+ * xmlXPathEvalFunc:
+ * @ctxt: an XPath parser context
+ * @nargs: the number of arguments passed to the function
+ *
+ * An XPath evaluation function, the parameters are on the XPath context stack.
+ */
+
+typedef void (*xmlXPathEvalFunc)(xmlXPathParserContextPtr ctxt,
+	                         int nargs);
+
+/*
+ * Extra function: a name and a evaluation function.
+ */
+
+typedef struct _xmlXPathFunct xmlXPathFunct;
+typedef xmlXPathFunct *xmlXPathFuncPtr;
+struct _xmlXPathFunct {
+    const xmlChar      *name;		/* the function name */
+    xmlXPathEvalFunc func;		/* the evaluation function */
+};
+
+/**
+ * xmlXPathAxisFunc:
+ * @ctxt:  the XPath interpreter context
+ * @cur:  the previous node being explored on that axis
+ *
+ * An axis traversal function. To traverse an axis, the engine calls
+ * the first time with cur == NULL and repeat until the function returns
+ * NULL indicating the end of the axis traversal.
+ *
+ * Returns the next node in that axis or NULL if at the end of the axis.
+ */
+
+typedef xmlXPathObjectPtr (*xmlXPathAxisFunc) (xmlXPathParserContextPtr ctxt,
+				 xmlXPathObjectPtr cur);
+
+/*
+ * Extra axis: a name and an axis function.
+ */
+
+typedef struct _xmlXPathAxis xmlXPathAxis;
+typedef xmlXPathAxis *xmlXPathAxisPtr;
+struct _xmlXPathAxis {
+    const xmlChar      *name;		/* the axis name */
+    xmlXPathAxisFunc func;		/* the search function */
+};
+
+/**
+ * xmlXPathFunction:
+ * @ctxt:  the XPath interprestation context
+ * @nargs:  the number of arguments
+ *
+ * An XPath function.
+ * The arguments (if any) are popped out from the context stack
+ * and the result is pushed on the stack.
+ */
+
+typedef void (*xmlXPathFunction) (xmlXPathParserContextPtr ctxt, int nargs);
+
+/*
+ * Function and Variable Lookup.
+ */
+
+/**
+ * xmlXPathVariableLookupFunc:
+ * @ctxt:  an XPath context
+ * @name:  name of the variable
+ * @ns_uri:  the namespace name hosting this variable
+ *
+ * Prototype for callbacks used to plug variable lookup in the XPath
+ * engine.
+ *
+ * Returns the XPath object value or NULL if not found.
+ */
+typedef xmlXPathObjectPtr (*xmlXPathVariableLookupFunc) (void *ctxt,
+                                         const xmlChar *name,
+                                         const xmlChar *ns_uri);
+
+/**
+ * xmlXPathFuncLookupFunc:
+ * @ctxt:  an XPath context
+ * @name:  name of the function
+ * @ns_uri:  the namespace name hosting this function
+ *
+ * Prototype for callbacks used to plug function lookup in the XPath
+ * engine.
+ *
+ * Returns the XPath function or NULL if not found.
+ */
+typedef xmlXPathFunction (*xmlXPathFuncLookupFunc) (void *ctxt,
+					 const xmlChar *name,
+					 const xmlChar *ns_uri);
+
+/**
+ * xmlXPathFlags:
+ * Flags for XPath engine compilation and runtime
+ */
+/**
+ * XML_XPATH_CHECKNS:
+ *
+ * check namespaces at compilation
+ */
+#define XML_XPATH_CHECKNS (1<<0)
+/**
+ * XML_XPATH_NOVAR:
+ *
+ * forbid variables in expression
+ */
+#define XML_XPATH_NOVAR	  (1<<1)
+
+/**
+ * xmlXPathContext:
+ *
+ * Expression evaluation occurs with respect to a context.
+ * he context consists of:
+ *    - a node (the context node)
+ *    - a node list (the context node list)
+ *    - a set of variable bindings
+ *    - a function library
+ *    - the set of namespace declarations in scope for the expression
+ * Following the switch to hash tables, this need to be trimmed up at
+ * the next binary incompatible release.
+ * The node may be modified when the context is passed to libxml2
+ * for an XPath evaluation so you may need to initialize it again
+ * before the next call.
+ */
+
+struct _xmlXPathContext {
+    xmlDocPtr doc;			/* The current document */
+    xmlNodePtr node;			/* The current node */
+
+    int nb_variables_unused;		/* unused (hash table) */
+    int max_variables_unused;		/* unused (hash table) */
+    xmlHashTablePtr varHash;		/* Hash table of defined variables */
+
+    int nb_types;			/* number of defined types */
+    int max_types;			/* max number of types */
+    xmlXPathTypePtr types;		/* Array of defined types */
+
+    int nb_funcs_unused;		/* unused (hash table) */
+    int max_funcs_unused;		/* unused (hash table) */
+    xmlHashTablePtr funcHash;		/* Hash table of defined funcs */
+
+    int nb_axis;			/* number of defined axis */
+    int max_axis;			/* max number of axis */
+    xmlXPathAxisPtr axis;		/* Array of defined axis */
+
+    /* the namespace nodes of the context node */
+    xmlNsPtr *namespaces;		/* Array of namespaces */
+    int nsNr;				/* number of namespace in scope */
+    void *user;				/* function to free */
+
+    /* extra variables */
+    int contextSize;			/* the context size */
+    int proximityPosition;		/* the proximity position */
+
+    /* extra stuff for XPointer */
+    int xptr;				/* is this an XPointer context? */
+    xmlNodePtr here;			/* for here() */
+    xmlNodePtr origin;			/* for origin() */
+
+    /* the set of namespace declarations in scope for the expression */
+    xmlHashTablePtr nsHash;		/* The namespaces hash table */
+    xmlXPathVariableLookupFunc varLookupFunc;/* variable lookup func */
+    void *varLookupData;		/* variable lookup data */
+
+    /* Possibility to link in an extra item */
+    void *extra;                        /* needed for XSLT */
+
+    /* The function name and URI when calling a function */
+    const xmlChar *function;
+    const xmlChar *functionURI;
+
+    /* function lookup function and data */
+    xmlXPathFuncLookupFunc funcLookupFunc;/* function lookup func */
+    void *funcLookupData;		/* function lookup data */
+
+    /* temporary namespace lists kept for walking the namespace axis */
+    xmlNsPtr *tmpNsList;		/* Array of namespaces */
+    int tmpNsNr;			/* number of namespaces in scope */
+
+    /* error reporting mechanism */
+    void *userData;                     /* user specific data block */
+    xmlStructuredErrorFunc error;       /* the callback in case of errors */
+    xmlError lastError;			/* the last error */
+    xmlNodePtr debugNode;		/* the source node XSLT */
+
+    /* dictionary */
+    xmlDictPtr dict;			/* dictionary if any */
+
+    int flags;				/* flags to control compilation */
+
+    /* Cache for reusal of XPath objects */
+    void *cache;
+
+    /* Resource limits */
+    unsigned long opLimit;
+    unsigned long opCount;
+    int depth;
+};
+
+/*
+ * The structure of a compiled expression form is not public.
+ */
+
+typedef struct _xmlXPathCompExpr xmlXPathCompExpr;
+typedef xmlXPathCompExpr *xmlXPathCompExprPtr;
+
+/**
+ * xmlXPathParserContext:
+ *
+ * An XPath parser context. It contains pure parsing information,
+ * an xmlXPathContext, and the stack of objects.
+ */
+struct _xmlXPathParserContext {
+    const xmlChar *cur;			/* the current char being parsed */
+    const xmlChar *base;			/* the full expression */
+
+    int error;				/* error code */
+
+    xmlXPathContextPtr  context;	/* the evaluation context */
+    xmlXPathObjectPtr     value;	/* the current value */
+    int                 valueNr;	/* number of values stacked */
+    int                valueMax;	/* max number of values stacked */
+    xmlXPathObjectPtr *valueTab;	/* stack of values */
+
+    xmlXPathCompExprPtr comp;		/* the precompiled expression */
+    int xptr;				/* it this an XPointer expression */
+    xmlNodePtr         ancestor;	/* used for walking preceding axis */
+
+    int              valueFrame;        /* always zero for compatibility */
+};
+
+/************************************************************************
+ *									*
+ *			Public API					*
+ *									*
+ ************************************************************************/
+
+/**
+ * Objects and Nodesets handling
+ */
+
+XML_DEPRECATED
+XMLPUBVAR double xmlXPathNAN;
+XML_DEPRECATED
+XMLPUBVAR double xmlXPathPINF;
+XML_DEPRECATED
+XMLPUBVAR double xmlXPathNINF;
+
+/* These macros may later turn into functions */
+/**
+ * xmlXPathNodeSetGetLength:
+ * @ns:  a node-set
+ *
+ * Implement a functionality similar to the DOM NodeList.length.
+ *
+ * Returns the number of nodes in the node-set.
+ */
+#define xmlXPathNodeSetGetLength(ns) ((ns) ? (ns)->nodeNr : 0)
+/**
+ * xmlXPathNodeSetItem:
+ * @ns:  a node-set
+ * @index:  index of a node in the set
+ *
+ * Implements a functionality similar to the DOM NodeList.item().
+ *
+ * Returns the xmlNodePtr at the given @index in @ns or NULL if
+ *         @index is out of range (0 to length-1)
+ */
+#define xmlXPathNodeSetItem(ns, index)				\
+		((((ns) != NULL) &&				\
+		  ((index) >= 0) && ((index) < (ns)->nodeNr)) ?	\
+		 (ns)->nodeTab[(index)]				\
+		 : NULL)
+/**
+ * xmlXPathNodeSetIsEmpty:
+ * @ns: a node-set
+ *
+ * Checks whether @ns is empty or not.
+ *
+ * Returns %TRUE if @ns is an empty node-set.
+ */
+#define xmlXPathNodeSetIsEmpty(ns)                                      \
+    (((ns) == NULL) || ((ns)->nodeNr == 0) || ((ns)->nodeTab == NULL))
+
+
+XMLPUBFUN void
+		    xmlXPathFreeObject		(xmlXPathObjectPtr obj);
+XMLPUBFUN xmlNodeSetPtr
+		    xmlXPathNodeSetCreate	(xmlNodePtr val);
+XMLPUBFUN void
+		    xmlXPathFreeNodeSetList	(xmlXPathObjectPtr obj);
+XMLPUBFUN void
+		    xmlXPathFreeNodeSet		(xmlNodeSetPtr obj);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathObjectCopy		(xmlXPathObjectPtr val);
+XMLPUBFUN int
+		    xmlXPathCmpNodes		(xmlNodePtr node1,
+						 xmlNodePtr node2);
+/**
+ * Conversion functions to basic types.
+ */
+XMLPUBFUN int
+		    xmlXPathCastNumberToBoolean	(double val);
+XMLPUBFUN int
+		    xmlXPathCastStringToBoolean	(const xmlChar * val);
+XMLPUBFUN int
+		    xmlXPathCastNodeSetToBoolean(xmlNodeSetPtr ns);
+XMLPUBFUN int
+		    xmlXPathCastToBoolean	(xmlXPathObjectPtr val);
+
+XMLPUBFUN double
+		    xmlXPathCastBooleanToNumber	(int val);
+XMLPUBFUN double
+		    xmlXPathCastStringToNumber	(const xmlChar * val);
+XMLPUBFUN double
+		    xmlXPathCastNodeToNumber	(xmlNodePtr node);
+XMLPUBFUN double
+		    xmlXPathCastNodeSetToNumber	(xmlNodeSetPtr ns);
+XMLPUBFUN double
+		    xmlXPathCastToNumber	(xmlXPathObjectPtr val);
+
+XMLPUBFUN xmlChar *
+		    xmlXPathCastBooleanToString	(int val);
+XMLPUBFUN xmlChar *
+		    xmlXPathCastNumberToString	(double val);
+XMLPUBFUN xmlChar *
+		    xmlXPathCastNodeToString	(xmlNodePtr node);
+XMLPUBFUN xmlChar *
+		    xmlXPathCastNodeSetToString	(xmlNodeSetPtr ns);
+XMLPUBFUN xmlChar *
+		    xmlXPathCastToString	(xmlXPathObjectPtr val);
+
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathConvertBoolean	(xmlXPathObjectPtr val);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathConvertNumber	(xmlXPathObjectPtr val);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathConvertString	(xmlXPathObjectPtr val);
+
+/**
+ * Context handling.
+ */
+XMLPUBFUN xmlXPathContextPtr
+		    xmlXPathNewContext		(xmlDocPtr doc);
+XMLPUBFUN void
+		    xmlXPathFreeContext		(xmlXPathContextPtr ctxt);
+XMLPUBFUN void
+		    xmlXPathSetErrorHandler(xmlXPathContextPtr ctxt,
+					    xmlStructuredErrorFunc handler,
+					    void *context);
+XMLPUBFUN int
+		    xmlXPathContextSetCache(xmlXPathContextPtr ctxt,
+				            int active,
+					    int value,
+					    int options);
+/**
+ * Evaluation functions.
+ */
+XMLPUBFUN long
+		    xmlXPathOrderDocElems	(xmlDocPtr doc);
+XMLPUBFUN int
+		    xmlXPathSetContextNode	(xmlNodePtr node,
+						 xmlXPathContextPtr ctx);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathNodeEval		(xmlNodePtr node,
+						 const xmlChar *str,
+						 xmlXPathContextPtr ctx);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathEval		(const xmlChar *str,
+						 xmlXPathContextPtr ctx);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathEvalExpression	(const xmlChar *str,
+						 xmlXPathContextPtr ctxt);
+XMLPUBFUN int
+		    xmlXPathEvalPredicate	(xmlXPathContextPtr ctxt,
+						 xmlXPathObjectPtr res);
+/**
+ * Separate compilation/evaluation entry points.
+ */
+XMLPUBFUN xmlXPathCompExprPtr
+		    xmlXPathCompile		(const xmlChar *str);
+XMLPUBFUN xmlXPathCompExprPtr
+		    xmlXPathCtxtCompile		(xmlXPathContextPtr ctxt,
+						 const xmlChar *str);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPathCompiledEval	(xmlXPathCompExprPtr comp,
+						 xmlXPathContextPtr ctx);
+XMLPUBFUN int
+		    xmlXPathCompiledEvalToBoolean(xmlXPathCompExprPtr comp,
+						 xmlXPathContextPtr ctxt);
+XMLPUBFUN void
+		    xmlXPathFreeCompExpr	(xmlXPathCompExprPtr comp);
+
+XML_DEPRECATED
+XMLPUBFUN void
+		    xmlXPathInit		(void);
+XMLPUBFUN int
+		xmlXPathIsNaN	(double val);
+XMLPUBFUN int
+		xmlXPathIsInf	(double val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XPATH_ENABLED */
+#endif /* ! __XML_XPATH_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xpathInternals.h

@@ -0,0 +1,639 @@
+/*
+ * Summary: internal interfaces for XML Path Language implementation
+ * Description: internal interfaces for XML Path Language implementation
+ *              used to build new modules on top of XPath like XPointer and
+ *              XSLT
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XPATH_INTERNALS_H__
+#define __XML_XPATH_INTERNALS_H__
+
+#include <stdio.h>
+#include <libxml/xmlversion.h>
+#include <libxml/xpath.h>
+
+#ifdef LIBXML_XPATH_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Backward compatibility
+ */
+#define valuePush xmlXPathValuePush
+#define valuePop xmlXPathValuePop
+
+/************************************************************************
+ *									*
+ *			Helpers						*
+ *									*
+ ************************************************************************/
+
+/*
+ * Many of these macros may later turn into functions. They
+ * shouldn't be used in #ifdef's preprocessor instructions.
+ */
+/**
+ * xmlXPathSetError:
+ * @ctxt:  an XPath parser context
+ * @err:  an xmlXPathError code
+ *
+ * Raises an error.
+ */
+#define xmlXPathSetError(ctxt, err)					\
+    { xmlXPatherror((ctxt), __FILE__, __LINE__, (err));			\
+      if ((ctxt) != NULL) (ctxt)->error = (err); }
+
+/**
+ * xmlXPathSetArityError:
+ * @ctxt:  an XPath parser context
+ *
+ * Raises an XPATH_INVALID_ARITY error.
+ */
+#define xmlXPathSetArityError(ctxt)					\
+    xmlXPathSetError((ctxt), XPATH_INVALID_ARITY)
+
+/**
+ * xmlXPathSetTypeError:
+ * @ctxt:  an XPath parser context
+ *
+ * Raises an XPATH_INVALID_TYPE error.
+ */
+#define xmlXPathSetTypeError(ctxt)					\
+    xmlXPathSetError((ctxt), XPATH_INVALID_TYPE)
+
+/**
+ * xmlXPathGetError:
+ * @ctxt:  an XPath parser context
+ *
+ * Get the error code of an XPath context.
+ *
+ * Returns the context error.
+ */
+#define xmlXPathGetError(ctxt)	  ((ctxt)->error)
+
+/**
+ * xmlXPathCheckError:
+ * @ctxt:  an XPath parser context
+ *
+ * Check if an XPath error was raised.
+ *
+ * Returns true if an error has been raised, false otherwise.
+ */
+#define xmlXPathCheckError(ctxt)  ((ctxt)->error != XPATH_EXPRESSION_OK)
+
+/**
+ * xmlXPathGetDocument:
+ * @ctxt:  an XPath parser context
+ *
+ * Get the document of an XPath context.
+ *
+ * Returns the context document.
+ */
+#define xmlXPathGetDocument(ctxt)	((ctxt)->context->doc)
+
+/**
+ * xmlXPathGetContextNode:
+ * @ctxt: an XPath parser context
+ *
+ * Get the context node of an XPath context.
+ *
+ * Returns the context node.
+ */
+#define xmlXPathGetContextNode(ctxt)	((ctxt)->context->node)
+
+XMLPUBFUN int
+		xmlXPathPopBoolean	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN double
+		xmlXPathPopNumber	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar *
+		xmlXPathPopString	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathPopNodeSet	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void *
+		xmlXPathPopExternal	(xmlXPathParserContextPtr ctxt);
+
+/**
+ * xmlXPathReturnBoolean:
+ * @ctxt:  an XPath parser context
+ * @val:  a boolean
+ *
+ * Pushes the boolean @val on the context stack.
+ */
+#define xmlXPathReturnBoolean(ctxt, val)				\
+    valuePush((ctxt), xmlXPathNewBoolean(val))
+
+/**
+ * xmlXPathReturnTrue:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes true on the context stack.
+ */
+#define xmlXPathReturnTrue(ctxt)   xmlXPathReturnBoolean((ctxt), 1)
+
+/**
+ * xmlXPathReturnFalse:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes false on the context stack.
+ */
+#define xmlXPathReturnFalse(ctxt)  xmlXPathReturnBoolean((ctxt), 0)
+
+/**
+ * xmlXPathReturnNumber:
+ * @ctxt:  an XPath parser context
+ * @val:  a double
+ *
+ * Pushes the double @val on the context stack.
+ */
+#define xmlXPathReturnNumber(ctxt, val)					\
+    valuePush((ctxt), xmlXPathNewFloat(val))
+
+/**
+ * xmlXPathReturnString:
+ * @ctxt:  an XPath parser context
+ * @str:  a string
+ *
+ * Pushes the string @str on the context stack.
+ */
+#define xmlXPathReturnString(ctxt, str)					\
+    valuePush((ctxt), xmlXPathWrapString(str))
+
+/**
+ * xmlXPathReturnEmptyString:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes an empty string on the stack.
+ */
+#define xmlXPathReturnEmptyString(ctxt)					\
+    valuePush((ctxt), xmlXPathNewCString(""))
+
+/**
+ * xmlXPathReturnNodeSet:
+ * @ctxt:  an XPath parser context
+ * @ns:  a node-set
+ *
+ * Pushes the node-set @ns on the context stack.
+ */
+#define xmlXPathReturnNodeSet(ctxt, ns)					\
+    valuePush((ctxt), xmlXPathWrapNodeSet(ns))
+
+/**
+ * xmlXPathReturnEmptyNodeSet:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes an empty node-set on the context stack.
+ */
+#define xmlXPathReturnEmptyNodeSet(ctxt)				\
+    valuePush((ctxt), xmlXPathNewNodeSet(NULL))
+
+/**
+ * xmlXPathReturnExternal:
+ * @ctxt:  an XPath parser context
+ * @val:  user data
+ *
+ * Pushes user data on the context stack.
+ */
+#define xmlXPathReturnExternal(ctxt, val)				\
+    valuePush((ctxt), xmlXPathWrapExternal(val))
+
+/**
+ * xmlXPathStackIsNodeSet:
+ * @ctxt: an XPath parser context
+ *
+ * Check if the current value on the XPath stack is a node set or
+ * an XSLT value tree.
+ *
+ * Returns true if the current object on the stack is a node-set.
+ */
+#define xmlXPathStackIsNodeSet(ctxt)					\
+    (((ctxt)->value != NULL)						\
+     && (((ctxt)->value->type == XPATH_NODESET)				\
+         || ((ctxt)->value->type == XPATH_XSLT_TREE)))
+
+/**
+ * xmlXPathStackIsExternal:
+ * @ctxt: an XPath parser context
+ *
+ * Checks if the current value on the XPath stack is an external
+ * object.
+ *
+ * Returns true if the current object on the stack is an external
+ * object.
+ */
+#define xmlXPathStackIsExternal(ctxt)					\
+	((ctxt->value != NULL) && (ctxt->value->type == XPATH_USERS))
+
+/**
+ * xmlXPathEmptyNodeSet:
+ * @ns:  a node-set
+ *
+ * Empties a node-set.
+ */
+#define xmlXPathEmptyNodeSet(ns)					\
+    { while ((ns)->nodeNr > 0) (ns)->nodeTab[--(ns)->nodeNr] = NULL; }
+
+/**
+ * CHECK_ERROR:
+ *
+ * Macro to return from the function if an XPath error was detected.
+ */
+#define CHECK_ERROR							\
+    if (ctxt->error != XPATH_EXPRESSION_OK) return
+
+/**
+ * CHECK_ERROR0:
+ *
+ * Macro to return 0 from the function if an XPath error was detected.
+ */
+#define CHECK_ERROR0							\
+    if (ctxt->error != XPATH_EXPRESSION_OK) return(0)
+
+/**
+ * XP_ERROR:
+ * @X:  the error code
+ *
+ * Macro to raise an XPath error and return.
+ */
+#define XP_ERROR(X)							\
+    { xmlXPathErr(ctxt, X); return; }
+
+/**
+ * XP_ERROR0:
+ * @X:  the error code
+ *
+ * Macro to raise an XPath error and return 0.
+ */
+#define XP_ERROR0(X)							\
+    { xmlXPathErr(ctxt, X); return(0); }
+
+/**
+ * CHECK_TYPE:
+ * @typeval:  the XPath type
+ *
+ * Macro to check that the value on top of the XPath stack is of a given
+ * type.
+ */
+#define CHECK_TYPE(typeval)						\
+    if ((ctxt->value == NULL) || (ctxt->value->type != typeval))	\
+        XP_ERROR(XPATH_INVALID_TYPE)
+
+/**
+ * CHECK_TYPE0:
+ * @typeval:  the XPath type
+ *
+ * Macro to check that the value on top of the XPath stack is of a given
+ * type. Return(0) in case of failure
+ */
+#define CHECK_TYPE0(typeval)						\
+    if ((ctxt->value == NULL) || (ctxt->value->type != typeval))	\
+        XP_ERROR0(XPATH_INVALID_TYPE)
+
+/**
+ * CHECK_ARITY:
+ * @x:  the number of expected args
+ *
+ * Macro to check that the number of args passed to an XPath function matches.
+ */
+#define CHECK_ARITY(x)							\
+    if (ctxt == NULL) return;						\
+    if (nargs != (x))							\
+        XP_ERROR(XPATH_INVALID_ARITY);					\
+    if (ctxt->valueNr < (x))						\
+        XP_ERROR(XPATH_STACK_ERROR);
+
+/**
+ * CAST_TO_STRING:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a string.
+ */
+#define CAST_TO_STRING							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING))	\
+        xmlXPathStringFunction(ctxt, 1);
+
+/**
+ * CAST_TO_NUMBER:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a number.
+ */
+#define CAST_TO_NUMBER							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER))	\
+        xmlXPathNumberFunction(ctxt, 1);
+
+/**
+ * CAST_TO_BOOLEAN:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a boolean.
+ */
+#define CAST_TO_BOOLEAN							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_BOOLEAN))	\
+        xmlXPathBooleanFunction(ctxt, 1);
+
+/*
+ * Variable Lookup forwarding.
+ */
+
+XMLPUBFUN void
+	xmlXPathRegisterVariableLookup	(xmlXPathContextPtr ctxt,
+					 xmlXPathVariableLookupFunc f,
+					 void *data);
+
+/*
+ * Function Lookup forwarding.
+ */
+
+XMLPUBFUN void
+	    xmlXPathRegisterFuncLookup	(xmlXPathContextPtr ctxt,
+					 xmlXPathFuncLookupFunc f,
+					 void *funcCtxt);
+
+/*
+ * Error reporting.
+ */
+XMLPUBFUN void
+		xmlXPatherror	(xmlXPathParserContextPtr ctxt,
+				 const char *file,
+				 int line,
+				 int no);
+
+XMLPUBFUN void
+		xmlXPathErr	(xmlXPathParserContextPtr ctxt,
+				 int error);
+
+#ifdef LIBXML_DEBUG_ENABLED
+XMLPUBFUN void
+		xmlXPathDebugDumpObject	(FILE *output,
+					 xmlXPathObjectPtr cur,
+					 int depth);
+XMLPUBFUN void
+	    xmlXPathDebugDumpCompExpr(FILE *output,
+					 xmlXPathCompExprPtr comp,
+					 int depth);
+#endif
+/**
+ * NodeSet handling.
+ */
+XMLPUBFUN int
+		xmlXPathNodeSetContains		(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathDifference		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathIntersection		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathDistinctSorted		(xmlNodeSetPtr nodes);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathDistinct		(xmlNodeSetPtr nodes);
+
+XMLPUBFUN int
+		xmlXPathHasSameNodes		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathNodeLeadingSorted	(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathLeadingSorted		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathNodeLeading		(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathLeading			(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathNodeTrailingSorted	(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathTrailingSorted		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathNodeTrailing		(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathTrailing		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+
+/**
+ * Extending a context.
+ */
+
+XMLPUBFUN int
+		xmlXPathRegisterNs		(xmlXPathContextPtr ctxt,
+						 const xmlChar *prefix,
+						 const xmlChar *ns_uri);
+XMLPUBFUN const xmlChar *
+		xmlXPathNsLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *prefix);
+XMLPUBFUN void
+		xmlXPathRegisteredNsCleanup	(xmlXPathContextPtr ctxt);
+
+XMLPUBFUN int
+		xmlXPathRegisterFunc		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 xmlXPathFunction f);
+XMLPUBFUN int
+		xmlXPathRegisterFuncNS		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri,
+						 xmlXPathFunction f);
+XMLPUBFUN int
+		xmlXPathRegisterVariable	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 xmlXPathObjectPtr value);
+XMLPUBFUN int
+		xmlXPathRegisterVariableNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri,
+						 xmlXPathObjectPtr value);
+XMLPUBFUN xmlXPathFunction
+		xmlXPathFunctionLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name);
+XMLPUBFUN xmlXPathFunction
+		xmlXPathFunctionLookupNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri);
+XMLPUBFUN void
+		xmlXPathRegisteredFuncsCleanup	(xmlXPathContextPtr ctxt);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathVariableLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathVariableLookupNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri);
+XMLPUBFUN void
+		xmlXPathRegisteredVariablesCleanup(xmlXPathContextPtr ctxt);
+
+/**
+ * Utilities to extend XPath.
+ */
+XMLPUBFUN xmlXPathParserContextPtr
+		  xmlXPathNewParserContext	(const xmlChar *str,
+						 xmlXPathContextPtr ctxt);
+XMLPUBFUN void
+		xmlXPathFreeParserContext	(xmlXPathParserContextPtr ctxt);
+
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathValuePop		(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int
+		xmlXPathValuePush		(xmlXPathParserContextPtr ctxt,
+						 xmlXPathObjectPtr value);
+
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewString		(const xmlChar *val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewCString		(const char *val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathWrapString		(xmlChar *val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathWrapCString		(char * val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewFloat		(double val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewBoolean		(int val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewNodeSet		(xmlNodePtr val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewValueTree		(xmlNodePtr val);
+XMLPUBFUN int
+		xmlXPathNodeSetAdd		(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN int
+		xmlXPathNodeSetAddUnique	(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN int
+		xmlXPathNodeSetAddNs		(xmlNodeSetPtr cur,
+						 xmlNodePtr node,
+						 xmlNsPtr ns);
+XMLPUBFUN void
+		xmlXPathNodeSetSort		(xmlNodeSetPtr set);
+
+XMLPUBFUN void
+		xmlXPathRoot			(xmlXPathParserContextPtr ctxt);
+XML_DEPRECATED
+XMLPUBFUN void
+		xmlXPathEvalExpr		(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar *
+		xmlXPathParseName		(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar *
+		xmlXPathParseNCName		(xmlXPathParserContextPtr ctxt);
+
+/*
+ * Existing functions.
+ */
+XMLPUBFUN double
+		xmlXPathStringEvalNumber	(const xmlChar *str);
+XMLPUBFUN int
+		xmlXPathEvaluatePredicateResult (xmlXPathParserContextPtr ctxt,
+						 xmlXPathObjectPtr res);
+XMLPUBFUN void
+		xmlXPathRegisterAllFunctions	(xmlXPathContextPtr ctxt);
+XMLPUBFUN xmlNodeSetPtr
+		xmlXPathNodeSetMerge		(xmlNodeSetPtr val1,
+						 xmlNodeSetPtr val2);
+XMLPUBFUN void
+		xmlXPathNodeSetDel		(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN void
+		xmlXPathNodeSetRemove		(xmlNodeSetPtr cur,
+						 int val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathNewNodeSetList		(xmlNodeSetPtr val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathWrapNodeSet		(xmlNodeSetPtr val);
+XMLPUBFUN xmlXPathObjectPtr
+		xmlXPathWrapExternal		(void *val);
+
+XMLPUBFUN int xmlXPathEqualValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int xmlXPathNotEqualValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int xmlXPathCompareValues(xmlXPathParserContextPtr ctxt, int inf, int strict);
+XMLPUBFUN void xmlXPathValueFlipSign(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void xmlXPathAddValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void xmlXPathSubValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void xmlXPathMultValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void xmlXPathDivValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void xmlXPathModValues(xmlXPathParserContextPtr ctxt);
+
+XMLPUBFUN int xmlXPathIsNodeType(const xmlChar *name);
+
+/*
+ * Some of the axis navigation routines.
+ */
+XMLPUBFUN xmlNodePtr xmlXPathNextSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextChild(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextDescendant(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextDescendantOrSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextParent(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextAncestorOrSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextFollowingSibling(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextFollowing(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextNamespace(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextAttribute(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextPreceding(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextAncestor(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr xmlXPathNextPrecedingSibling(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+/*
+ * The official core of XPath functions.
+ */
+XMLPUBFUN void xmlXPathLastFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathPositionFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathCountFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathIdFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathLocalNameFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathNamespaceURIFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathStringLengthFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathConcatFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathContainsFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathStartsWithFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathSubstringFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathSubstringBeforeFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathSubstringAfterFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathNormalizeFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathTranslateFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathNotFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathTrueFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathFalseFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathLangFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathNumberFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathSumFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathFloorFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathCeilingFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathRoundFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void xmlXPathBooleanFunction(xmlXPathParserContextPtr ctxt, int nargs);
+
+/**
+ * Really internal functions
+ */
+XMLPUBFUN void xmlXPathNodeSetFreeNs(xmlNsPtr ns);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XPATH_ENABLED */
+#endif /* ! __XML_XPATH_INTERNALS_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxml/xpointer.h

@@ -0,0 +1,48 @@
+/*
+ * Summary: API to handle XML Pointers
+ * Description: API to handle XML Pointers
+ * Base implementation was made accordingly to
+ * W3C Candidate Recommendation 7 June 2000
+ * http://www.w3.org/TR/2000/CR-xptr-20000607
+ *
+ * Added support for the element() scheme described in:
+ * W3C Proposed Recommendation 13 November 2002
+ * http://www.w3.org/TR/2002/PR-xptr-element-20021113/
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XPTR_H__
+#define __XML_XPTR_H__
+
+#include <libxml/xmlversion.h>
+
+#ifdef LIBXML_XPTR_ENABLED
+
+#include <libxml/tree.h>
+#include <libxml/xpath.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Functions.
+ */
+XML_DEPRECATED
+XMLPUBFUN xmlXPathContextPtr
+		    xmlXPtrNewContext		(xmlDocPtr doc,
+						 xmlNodePtr here,
+						 xmlNodePtr origin);
+XMLPUBFUN xmlXPathObjectPtr
+		    xmlXPtrEval			(const xmlChar *str,
+						 xmlXPathContextPtr ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XPTR_ENABLED */
+#endif /* __XML_XPTR_H__ */

.venv/lib/python3.9/site-packages/lxml/includes/libxslt/attributes.h

@@ -0,0 +1,39 @@
+/*
+ * Summary: interface for the XSLT attribute handling
+ * Description: this module handles the specificities of attribute
+ *              and attribute groups processing.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XSLT_ATTRIBUTES_H__
+#define __XML_XSLT_ATTRIBUTES_H__
+
+#include <libxml/tree.h>
+#include "xsltexports.h"
+#include "xsltInternals.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+XSLTPUBFUN void XSLTCALL
+	xsltParseStylesheetAttributeSet	(xsltStylesheetPtr style,
+					 xmlNodePtr cur);
+XSLTPUBFUN void XSLTCALL
+	xsltFreeAttributeSetsHashes	(xsltStylesheetPtr style);
+XSLTPUBFUN void XSLTCALL
+	xsltApplyAttributeSet		(xsltTransformContextPtr ctxt,
+					 xmlNodePtr node,
+					 xmlNodePtr inst,
+					 const xmlChar *attributes);
+XSLTPUBFUN void XSLTCALL
+	xsltResolveStylesheetAttributeSet(xsltStylesheetPtr style);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XSLT_ATTRIBUTES_H__ */
+