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[josuexyz/.git] / node_modules / ejs / lib / utils.js

diff --git a/node_modules/ejs/lib/utils.js b/node_modules/ejs/lib/utils.js
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+/*
+ * EJS Embedded JavaScript templates
+ * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+/**
+ * Private utility functions
+ * @module utils
+ * @private
+ */
+
+'use strict';
+
+var regExpChars = /[|\\{}()[\]^$+*?.]/g;
+
+/**
+ * Escape characters reserved in regular expressions.
+ *
+ * If `string` is `undefined` or `null`, the empty string is returned.
+ *
+ * @param {String} string Input string
+ * @return {String} Escaped string
+ * @static
+ * @private
+ */
+exports.escapeRegExpChars = function (string) {
+  // istanbul ignore if
+  if (!string) {
+    return '';
+  }
+  return String(string).replace(regExpChars, '\\$&');
+};
+
+var _ENCODE_HTML_RULES = {
+  '&': '&',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&#34;',
+  "'": '&#39;'
+};
+var _MATCH_HTML = /[&<>'"]/g;
+
+function encode_char(c) {
+  return _ENCODE_HTML_RULES[c] || c;
+}
+
+/**
+ * Stringified version of constants used by {@link module:utils.escapeXML}.
+ *
+ * It is used in the process of generating {@link ClientFunction}s.
+ *
+ * @readonly
+ * @type {String}
+ */
+
+var escapeFuncStr =
+  'var _ENCODE_HTML_RULES = {\n'
++ '      "&": "&amp;"\n'
++ '    , "<": "&lt;"\n'
++ '    , ">": "&gt;"\n'
++ '    , \'"\': "&#34;"\n'
++ '    , "\'": "&#39;"\n'
++ '    }\n'
++ '  , _MATCH_HTML = /[&<>\'"]/g;\n'
++ 'function encode_char(c) {\n'
++ '  return _ENCODE_HTML_RULES[c] || c;\n'
++ '};\n';
+
+/**
+ * Escape characters reserved in XML.
+ *
+ * If `markup` is `undefined` or `null`, the empty string is returned.
+ *
+ * @implements {EscapeCallback}
+ * @param {String} markup Input string
+ * @return {String} Escaped string
+ * @static
+ * @private
+ */
+
+exports.escapeXML = function (markup) {
+  return markup == undefined
+    ? ''
+    : String(markup)
+      .replace(_MATCH_HTML, encode_char);
+};
+exports.escapeXML.toString = function () {
+  return Function.prototype.toString.call(this) + ';\n' + escapeFuncStr;
+};
+
+/**
+ * Naive copy of properties from one object to another.
+ * Does not recurse into non-scalar properties
+ * Does not check to see if the property has a value before copying
+ *
+ * @param  {Object} to   Destination object
+ * @param  {Object} from Source object
+ * @return {Object}      Destination object
+ * @static
+ * @private
+ */
+exports.shallowCopy = function (to, from) {
+  from = from || {};
+  for (var p in from) {
+    to[p] = from[p];
+  }
+  return to;
+};
+
+/**
+ * Naive copy of a list of key names, from one object to another.
+ * Only copies property if it is actually defined
+ * Does not recurse into non-scalar properties
+ *
+ * @param  {Object} to   Destination object
+ * @param  {Object} from Source object
+ * @param  {Array} list List of properties to copy
+ * @return {Object}      Destination object
+ * @static
+ * @private
+ */
+exports.shallowCopyFromList = function (to, from, list) {
+  for (var i = 0; i < list.length; i++) {
+    var p = list[i];
+    if (typeof from[p] != 'undefined') {
+      to[p] = from[p];
+    }
+  }
+  return to;
+};
+
+/**
+ * Simple in-process cache implementation. Does not implement limits of any
+ * sort.
+ *
+ * @implements Cache
+ * @static
+ * @private
+ */
+exports.cache = {
+  _data: {},
+  set: function (key, val) {
+    this._data[key] = val;
+  },
+  get: function (key) {
+    return this._data[key];
+  },
+  remove: function (key) {
+    delete this._data[key];
+  },
+  reset: function () {
+    this._data = {};
+  }
+};