diff -r 000000000000 -r 40c8f766c9b8 src/cm/media/js/lib/yui/yui_3.0.0b1/build/json/json.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cm/media/js/lib/yui/yui_3.0.0b1/build/json/json.js Mon Nov 23 15:14:29 2009 +0100 @@ -0,0 +1,483 @@ +/* +Copyright (c) 2009, Yahoo! Inc. All rights reserved. +Code licensed under the BSD License: +http://developer.yahoo.net/yui/license.txt +version: 3.0.0b1 +build: 1163 +*/ +YUI.add('json-parse', function(Y) { + +/** + *

The JSON module adds support for serializing JavaScript objects into + * JSON strings and parsing JavaScript objects from strings in JSON format.

+ * + *

The JSON namespace is added to your YUI instance including static methods + * Y.JSON.parse(..) and Y.JSON.stringify(..).

+ * + *

The functionality and method signatures follow the ECMAScript 5 + * specification. In browsers with native JSON support, the native + * implementation is used.

+ * + *

The json module is a rollup of json-parse and + * json-stringify.

+ * + *

As their names suggest, json-parse adds support for parsing + * JSON data (Y.JSON.parse) and json-stringify for serializing + * JavaScript data into JSON strings (Y.JSON.stringify). You may choose to + * include either of the submodules individually if you don't need the + * complementary functionality, or include the rollup for both.

+ * + * @module json + * @class JSON + * @static + */ + +/** + * Provides Y.JSON.parse method to accept JSON strings and return native + * JavaScript objects. + * + * @module json + * @submodule json-parse + * @for JSON + * @static + */ + + +// All internals kept private for security reasons + + + /** + * Alias to native browser implementation of the JSON object if available. + * + * @property Native + * @type {Object} + * @private + */ +var Native = Y.config.win.JSON, + + /** + * Replace certain Unicode characters that JavaScript may handle incorrectly + * during eval--either by deleting them or treating them as line + * endings--with escape sequences. + * IMPORTANT NOTE: This regex will be used to modify the input if a match is + * found. + * + * @property _UNICODE_EXCEPTIONS + * @type {RegExp} + * @private + */ + _UNICODE_EXCEPTIONS = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, + + + /** + * First step in the safety evaluation. Regex used to replace all escape + * sequences (i.e. "\\", etc) with '@' characters (a non-JSON character). + * + * @property _ESCAPES + * @type {RegExp} + * @private + */ + _ESCAPES = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, + + /** + * Second step in the safety evaluation. Regex used to replace all simple + * values with ']' characters. + * + * @property _VALUES + * @type {RegExp} + * @private + */ + _VALUES = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, + + /** + * Third step in the safety evaluation. Regex used to remove all open + * square brackets following a colon, comma, or at the beginning of the + * string. + * + * @property _BRACKETS + * @type {RegExp} + * @private + */ + _BRACKETS = /(?:^|:|,)(?:\s*\[)+/g, + + /** + * Final step in the safety evaluation. Regex used to test the string left + * after all previous replacements for invalid characters. + * + * @property _INVALID + * @type {RegExp} + * @private + */ + _INVALID = /[^\],:{}\s]/, + + /** + * Test for JSON string of simple data string, number, boolean, or null. + * E.g. '"some string"', "true", "false", "null", or numbers "-123e+7" + * This was needed for some WIP native implementations (FF3.1b2) but may be + * unnecessary now. + * + * @property _SIMPLE + * @type {RegExp} + * @private + */ + _SIMPLE = /^\s*(?:"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)\s*$/, + + /** + * Replaces specific unicode characters with their appropriate \unnnn + * format. Some browsers ignore certain characters during eval. + * + * @method escapeException + * @param c {String} Unicode character + * @return {String} the \unnnn escapement of the character + * @private + */ + _escapeException = function (c) { + return '\\u'+('0000'+(+(c.charCodeAt(0))).toString(16)).slice(-4); + }, + + /** + * Traverses nested objects, applying a reviver function to each (key,value) + * from the scope if the key:value's containing object. The value returned + * from the function will replace the original value in the key:value pair. + * If the value returned is undefined, the key will be omitted from the + * returned object. + * + * @method _revive + * @param data {MIXED} Any JavaScript data + * @param reviver {Function} filter or mutation function + * @return {MIXED} The results of the filtered data + * @private + */ + _revive = function (data, reviver) { + var walk = function (o,key) { + var k,v,value = o[key]; + if (value && typeof value === 'object') { + for (k in value) { + if (value.hasOwnProperty(k)) { + v = walk(value, k); + if (v === undefined) { + delete value[k]; + } else { + value[k] = v; + } + } + } + } + return reviver.call(o,key,value); + }; + + return typeof reviver === 'function' ? walk({'':data},'') : data; + }, + + /** + * Parse a JSON string, returning the native JavaScript representation. + * + * @param s {string} JSON string data + * @param reviver {function} (optional) function(k,v) passed each key value + * pair of object literals, allowing pruning or altering values + * @return {MIXED} the native JavaScript representation of the JSON string + * @throws SyntaxError + * @method parse + * @static + */ + // JavaScript implementation in lieu of native browser support. Based on + // the json2.js library from http://json.org + _parse = function (s,reviver) { + if (typeof s === 'string') { + // Replace certain Unicode characters that are otherwise handled + // incorrectly by some browser implementations. + // NOTE: This modifies the input if such characters are found! + s = s.replace(_UNICODE_EXCEPTIONS, _escapeException); + + // Test for any remaining invalid characters + if (!_INVALID.test(s.replace(_ESCAPES,'@'). + replace(_VALUES,']'). + replace(_BRACKETS,''))) { + + // Eval the text into a JavaScript data structure, apply any + // reviver function, and return + return _revive( eval('(' + s + ')'), reviver ); + } + } + + throw new SyntaxError('JSON.parse'); + }, + + test; + + +// Test the level of native browser support +if (Native && Object.prototype.toString.call(Native) === '[object JSON]') { + try { + test = Native.parse('{"x":1}', function (k,v) {return k=='x' ? 2 : v;}); + switch (test.x) { + case 1 : // Reviver not supported + _parse = function (s,reviver) { + return _SIMPLE.test(s) ? + eval('(' + s + ')') : + _revive(Native.parse(s), reviver); + }; + break; + + case 2 : // Full support + _parse = function (s, reviver) { + return Native.parse(s, reviver); + }; + break; + + // default is JS implementation + } + } + catch (e) {} // defer to JS implementation +} + +Y.mix(Y.namespace('JSON'),{ parse : _parse }); + + +}, '3.0.0b1' ); +YUI.add('json-stringify', function(Y) { + +/** + * Provides Y.JSON.stringify method for converting objects to JSON strings. + * + * @module json + * @submodule json-stringify + * @for JSON + * @static + */ +var _toString = Object.prototype.toString, + Lang = Y.Lang, + isFunction= Lang.isFunction, + isArray = Lang.isArray, + type = Lang.type, + STRING = 'string', + NUMBER = 'number', + BOOLEAN = 'boolean', + OBJECT = 'object', + ARRAY = 'array', + REGEXP = 'regexp', + ERROR = 'error', + NULL = 'null', + DATE = 'date', + EMPTY = '', + OPEN_O = '{', + CLOSE_O = '}', + OPEN_A = '[', + CLOSE_A = ']', + COMMA = ',', + COMMA_CR = ",\n", + CR = "\n", + COLON = ':', + COLON_SP = ': ', + QUOTE = '"'; + +Y.mix(Y.namespace('JSON'),{ + /** + * Regex used to capture characters that need escaping before enclosing + * their containing string in quotes. + * + * @property _SPECIAL_CHARS + * @type {RegExp} + * @protected + */ + _SPECIAL_CHARS : /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, + + /** + * Character substitution map for common escapes and special characters. + * + * @property _CHARS + * @type {Object} + * @static + * @protected + */ + _CHARS : { + '\b': '\\b', + '\t': '\\t', + '\n': '\\n', + '\f': '\\f', + '\r': '\\r', + '"' : '\\"', + '\\': '\\\\' + }, + + /** + * Serializes a Date instance as a UTC date string. Used internally by + * stringify. Override this method if you need Dates serialized in a + * different format. + * + * @method dateToString + * @param d {Date} The Date to serialize + * @return {String} stringified Date in UTC format YYYY-MM-DDTHH:mm:SSZ + * @static + */ + dateToString : function (d) { + function _zeroPad(v) { + return v < 10 ? '0' + v : v; + } + + return QUOTE + d.getUTCFullYear() + '-' + + _zeroPad(d.getUTCMonth() + 1) + '-' + + _zeroPad(d.getUTCDate()) + 'T' + + _zeroPad(d.getUTCHours()) + COLON + + _zeroPad(d.getUTCMinutes()) + COLON + + _zeroPad(d.getUTCSeconds()) + 'Z' + QUOTE; + }, + + /** + *

Converts an arbitrary value to a JSON string representation.

+ * + *

Objects with cyclical references will trigger an exception.

+ * + *

If a whitelist is provided, only matching object keys will be + * included. Alternately, a replacer function may be passed as the + * second parameter. This function is executed on every value in the + * input, and its return value will be used in place of the original value. + * This is useful to serialize specialized objects or class instances.

+ * + *

If a positive integer or non-empty string is passed as the third + * parameter, the output will be formatted with carriage returns and + * indentation for readability. If a String is passed (such as "\t") it + * will be used once for each indentation level. If a number is passed, + * that number of spaces will be used.

+ * + * @method stringify + * @param o {MIXED} any arbitrary value to convert to JSON string + * @param w {Array|Function} (optional) whitelist of acceptable object + * keys to include, or a replacer function to modify the + * raw value before serialization + * @param ind {Number|String} (optional) indentation character or depth of + * spaces to format the output. + * @return {string} JSON string representation of the input + * @static + */ + stringify : function (o,w,ind) { + + var m = Y.JSON._CHARS, + str_re = Y.JSON._SPECIAL_CHARS, + rep = isFunction(w) ? w : null, + pstack = [], // Processing stack used for cyclical ref protection + _date = Y.JSON.dateToString, // Use configured date serialization + format = _toString.call(ind).match(/String|Number/); + + if (rep || typeof w !== 'object') { + w = undefined; + } + + if (format) { + // String instances and primatives are left alone. String objects + // coerce for the indenting operations. + if (format[0] === 'Number') { + + // force numeric indent values between {0,100} per the spec + // This also converts Number instances to primative + ind = new Array(Math.min(Math.max(0,ind),100)+1).join(" "); + } + + // turn off formatting for 0 or empty string + format = ind; + } + + // escape encode special characters + function _char(c) { + if (!m[c]) { + m[c]='\\u'+('0000'+(+(c.charCodeAt(0))).toString(16)).slice(-4); + } + return m[c]; + } + + // Enclose the escaped string in double quotes + function _string(s) { + return QUOTE + s.replace(str_re, _char) + QUOTE; + } + + // Check for cyclical references + function _cyclicalTest(o) { + for (var i = pstack.length - 1; i >= 0; --i) { + if (pstack[i] === o) { + throw new Error("JSON.stringify. Cyclical reference"); + } + } + return false; + } + + function _indent(s) { + return s.replace(/^/gm,ind); + } + + function _object(o,arr) { + // Add the object to the processing stack + pstack.push(o); + + var a = [], + colon = format ? COLON_SP : COLON, + i, j, len, k, v; + + if (arr) { // Array + for (i = o.length - 1; i >= 0; --i) { + a[i] = _stringify(o,i) || NULL; + } + } else { // Object + // If whitelist provided, take only those keys + k = isArray(w) ? w : Y.Object.keys(o); + + for (i = 0, j = 0, len = k.length; i < len; ++i) { + if (typeof k[i] === STRING) { + v = _stringify(o,k[i]); + if (v) { + a[j++] = _string(k[i]) + colon + v; + } + } + } + } + + // remove the array from the stack + pstack.pop(); + + if (format && a.length) { + return arr ? + OPEN_A + CR + _indent(a.join(COMMA_CR)) + CR + CLOSE_A : + OPEN_O + CR + _indent(a.join(COMMA_CR)) + CR + CLOSE_O; + } else { + return arr ? + OPEN_A + a.join(COMMA) + CLOSE_A : + OPEN_O + a.join(COMMA) + CLOSE_O; + } + } + + // Worker function. Fork behavior on data type and recurse objects. + function _stringify(h,key) { + var o = isFunction(rep) ? rep.call(h,key,h[key]) : h[key], + t = type(o); + + if (t === OBJECT) { + if (/String|Number|Boolean/.test(_toString.call(o))) { + o = o.valueOf(); + t = type(o); + } + } + + switch (t) { + case STRING : return _string(o); + case NUMBER : return isFinite(o) ? o+EMPTY : NULL; + case BOOLEAN : return o+EMPTY; + case DATE : return _date(o); + case NULL : return NULL; + case ARRAY : _cyclicalTest(o); return _object(o,true); + case REGEXP : // intentional fall through + case ERROR : // intentional fall through + case OBJECT : _cyclicalTest(o); return _object(o); + default : return undefined; + } + } + + // process the input + return _stringify({'':o},EMPTY); + } +}); + + +}, '3.0.0b1' ); + + +YUI.add('json', function(Y){}, '3.0.0b1' ,{use:['json-parse', 'json-stringify']}); +