feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/pidusage/lib/stats.js

@@ -0,0 +1,95 @@
+'use strict'
+
+const fs = require('fs')
+const os = require('os')
+
+const requireMap = {
+  ps: () => require('./ps'),
+  procfile: () => require('./procfile'),
+  wmic: () => require('./wmic')
+}
+
+const platformToMethod = {
+  aix: 'ps',
+  os400: 'ps',
+  android: 'procfile',
+  alpine: 'procfile',
+  darwin: 'ps',
+  freebsd: 'ps',
+  os390: 'ps',
+  linux: 'procfile',
+  netbsd: 'procfile',
+  openbsd: 'ps',
+  sunos: 'ps',
+  win: 'wmic'
+}
+
+let platform = os.platform()
+
+if (fs.existsSync('/etc/alpine-release')) {
+  platform = 'alpine'
+}
+
+if (platform.match(/^win/)) {
+  platform = 'win'
+}
+
+let stat
+try {
+  stat = requireMap[platformToMethod[platform]]()
+} catch (err) {}
+
+/**
+ * @callback pidCallback
+ * @param {Error} err A possible error.
+ * @param {Object} statistics The object containing the statistics.
+ */
+
+/**
+ * Get pid informations.
+ * @public
+ * @param  {Number|Number[]|String|String[]} pids A pid or a list of pids.
+ * @param  {Object} [options={}] Options object
+ * @param  {pidCallback} callback Called when the statistics are ready.
+ */
+function get (pids, options, callback) {
+  let fn = stat
+  if (platform !== 'win' && options.usePs === true) {
+    fn = requireMap.ps()
+  }
+
+  if (fn === undefined) {
+    return callback(new Error(os.platform() + ' is not supported yet, please open an issue (https://github.com/soyuka/pidusage)'))
+  }
+
+  let single = false
+  if (!Array.isArray(pids)) {
+    single = true
+    pids = [pids]
+  }
+
+  if (pids.length === 0) {
+    return callback(new TypeError('You must provide at least one pid'))
+  }
+
+  for (let i = 0; i < pids.length; i++) {
+    pids[i] = parseInt(pids[i], 10)
+    if (isNaN(pids[i]) || pids[i] < 0) {
+      return callback(new TypeError('One of the pids provided is invalid'))
+    }
+  }
+
+  fn(pids, options, function (err, stats) {
+    if (err) {
+      return callback(err)
+    }
+
+    if (single) {
+      callback(null, stats[pids[0]])
+    } else {
+      callback(null, stats)
+    }
+  })
+}
+
+module.exports = get