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Diffstat (limited to 'node_modules/ejs/lib/utils.js')
| -rw-r--r-- | node_modules/ejs/lib/utils.js | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/node_modules/ejs/lib/utils.js b/node_modules/ejs/lib/utils.js new file mode 100644 index 0000000..6859abf --- /dev/null +++ b/node_modules/ejs/lib/utils.js @@ -0,0 +1,225 @@ +/* + * 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 = /[|\\{}()[\]^$+*?.]/g; +var hasOwnProperty = Object.prototype.hasOwnProperty; +var hasOwn = function (obj, key) { return hasOwnProperty.apply(obj, [key]); }; + +/** + * Escape characters reserved in regular expressions. + * + * If `string` is `undefined` or `null`, the empty string is returned. + * + * @param {String} string Input string + * @return {String} Escaped string + * @static + * @private + */ +exports.escapeRegExpChars = function (string) { + // istanbul ignore if + if (!string) { + return ''; + } + return String(string).replace(regExpChars, '\\$&'); +}; + +var _ENCODE_HTML_RULES = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' +}; +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' ++ ' "&": "&"\n' ++ ' , "<": "<"\n' ++ ' , ">": ">"\n' ++ ' , \'"\': """\n' ++ ' , "\'": "'"\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 || {}; + if ((to !== null) && (to !== undefined)) { + for (var p in from) { + if (!hasOwn(from, p)) { + continue; + } + if (p === '__proto__' || p === 'constructor') { + continue; + } + 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) { + list = list || []; + from = from || {}; + if ((to !== null) && (to !== undefined)) { + for (var i = 0; i < list.length; i++) { + var p = list[i]; + if (typeof from[p] != 'undefined') { + if (!hasOwn(from, p)) { + continue; + } + if (p === '__proto__' || p === 'constructor') { + continue; + } + 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 = {}; + } +}; + +/** + * Transforms hyphen case variable into camel case. + * + * @param {String} string Hyphen case string + * @return {String} Camel case string + * @static + * @private + */ +exports.hyphenToCamel = function (str) { + return str.replace(/-[a-z]/g, function (match) { return match[1].toUpperCase(); }); +}; + +/** + * Returns a null-prototype object in runtimes that support it + * + * @return {Object} Object, prototype will be set to null where possible + * @static + * @private + */ +exports.createNullProtoObjWherePossible = (function () { + if (typeof Object.create == 'function') { + return function () { + return Object.create(null); + }; + } + if (!({__proto__: null} instanceof Object)) { + return function () { + return {__proto__: null}; + }; + } + // Not possible, just pass through + return function () { + return {}; + }; +})(); + + |