summaryrefslogtreecommitdiff
path: root/resources/jquery/jquery.json.js
blob: aac3428bed1c34ba65ef051169dc88fabeb3a23a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
/**
 * jQuery JSON Plugin
 * version: 2.3 (2011-09-17)
 *
 * This document is licensed as free software under the terms of the
 * MIT License: http://www.opensource.org/licenses/mit-license.php
 *
 * Brantley Harris wrote this plugin. It is based somewhat on the JSON.org
 * website's http://www.json.org/json2.js, which proclaims:
 * "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that
 * I uphold.
 *
 * It is also influenced heavily by MochiKit's serializeJSON, which is
 * copyrighted 2005 by Bob Ippolito.
 */

(function( $ ) {

	var	escapeable = /["\\\x00-\x1f\x7f-\x9f]/g,
			meta = {
				'\b': '\\b',
				'\t': '\\t',
				'\n': '\\n',
				'\f': '\\f',
				'\r': '\\r',
				'"' : '\\"',
				'\\': '\\\\'
			};

	/**
	 * jQuery.toJSON
	 * Converts the given argument into a JSON respresentation.
	 *
	 * @param o {Mixed} The json-serializble *thing* to be converted
	 *
	 * If an object has a toJSON prototype, that will be used to get the representation.
	 * Non-integer/string keys are skipped in the object, as are keys that point to a
	 * function.
	 *
	 */
	$.toJSON = typeof JSON === 'object' && JSON.stringify
			? JSON.stringify
			: function( o ) {

		if ( o === null ) {
			return 'null';
		}

		var type = typeof o;

		if ( type === 'undefined' ) {
			return undefined;
		}
		if ( type === 'number' || type === 'boolean' ) {
			return '' + o;
		}
		if ( type === 'string') {
			return $.quoteString( o );
		}
		if ( type === 'object' ) {
			if ( typeof o.toJSON === 'function' ) {
				return $.toJSON( o.toJSON() );
			}
			if ( o.constructor === Date ) {
				var	month = o.getUTCMonth() + 1,
						day = o.getUTCDate(),
						year = o.getUTCFullYear(),
						hours = o.getUTCHours(),
						minutes = o.getUTCMinutes(),
						seconds = o.getUTCSeconds(),
						milli = o.getUTCMilliseconds();

				if ( month < 10 ) {
					month = '0' + month;
				}
				if ( day < 10 ) {
					day = '0' + day;
				}
				if ( hours < 10 ) {
					hours = '0' + hours;
				}
				if ( minutes < 10 ) {
					minutes = '0' + minutes;
				}
				if ( seconds < 10 ) {
					seconds = '0' + seconds;
				}
				if ( milli < 100 ) {
					milli = '0' + milli;
				}
				if ( milli < 10 ) {
					milli = '0' + milli;
				}
				return '"' + year + '-' + month + '-' + day + 'T' +
						hours + ':' + minutes + ':' + seconds +
						'.' + milli + 'Z"';
			}
			if ( o.constructor === Array ) {
				var ret = [];
				for ( var i = 0; i < o.length; i++ ) {
					ret.push( $.toJSON( o[i] ) || 'null' );
				}
				return '[' + ret.join(',') + ']';
			}
			var	name,
					val,
					pairs = [];
			for ( var k in o ) {
				type = typeof k;
				if ( type === 'number' ) {
					name = '"' + k + '"';
				} else if (type === 'string') {
					name = $.quoteString(k);
				} else {
					// Keys must be numerical or string. Skip others
					continue;
				}
				type = typeof o[k];

				if ( type === 'function' || type === 'undefined' ) {
					// Invalid values like these return undefined
					// from toJSON, however those object members
					// shouldn't be included in the JSON string at all.
					continue;
				}
				val = $.toJSON( o[k] );
				pairs.push( name + ':' + val );
			}
			return '{' + pairs.join( ',' ) + '}';
		}
	};

	/**
	 * jQuery.evalJSON
	 * Evaluates a given piece of json source.
	 *
	 * @param src {String}
	 */
	$.evalJSON = typeof JSON === 'object' && JSON.parse
			? JSON.parse
			: function( src ) {
		return eval('(' + src + ')');
	};

	/**
	 * jQuery.secureEvalJSON
	 * Evals JSON in a way that is *more* secure.
	 *
	 * @param src {String}
	 */
	$.secureEvalJSON = typeof JSON === 'object' && JSON.parse
			? JSON.parse
			: function( src ) {

		var filtered =
				src
						.replace( /\\["\\\/bfnrtu]/g, '@' )
						.replace( /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
						.replace( /(?:^|:|,)(?:\s*\[)+/g, '');

		if ( /^[\],:{}\s]*$/.test( filtered ) ) {
			return eval( '(' + src + ')' );
		} else {
			throw new SyntaxError( 'Error parsing JSON, source is not valid.' );
		}
	};

	/**
	 * jQuery.quoteString
	 * Returns a string-repr of a string, escaping quotes intelligently.
	 * Mostly a support function for toJSON.
	 * Examples:
	 * >>> jQuery.quoteString('apple')
	 * "apple"
	 *
	 * >>> jQuery.quoteString('"Where are we going?", she asked.')
	 * "\"Where are we going?\", she asked."
	 */
	$.quoteString = function( string ) {
		if ( string.match( escapeable ) ) {
			return '"' + string.replace( escapeable, function( a ) {
				var c = meta[a];
				if ( typeof c === 'string' ) {
					return c;
				}
				c = a.charCodeAt();
				return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);
			}) + '"';
		}
		return '"' + string + '"';
	};

})( jQuery );