Line 0
Link Here
|
|
|
1 |
/** |
2 |
* jQuery JSON plugin 2.4-alpha |
3 |
* |
4 |
* @author Brantley Harris, 2009-2011 |
5 |
* @author Timo Tijhof, 2011-2012 |
6 |
* @source This plugin is heavily influenced by MochiKit's serializeJSON, which is |
7 |
* copyrighted 2005 by Bob Ippolito. |
8 |
* @source Brantley Harris wrote this plugin. It is based somewhat on the JSON.org |
9 |
* website's http://www.json.org/json2.js, which proclaims: |
10 |
* "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that |
11 |
* I uphold. |
12 |
* @license MIT License <http://www.opensource.org/licenses/mit-license.php> |
13 |
*/ |
14 |
(function ($) { |
15 |
'use strict'; |
16 |
|
17 |
var escape = /["\\\x00-\x1f\x7f-\x9f]/g, |
18 |
meta = { |
19 |
'\b': '\\b', |
20 |
'\t': '\\t', |
21 |
'\n': '\\n', |
22 |
'\f': '\\f', |
23 |
'\r': '\\r', |
24 |
'"' : '\\"', |
25 |
'\\': '\\\\' |
26 |
}, |
27 |
hasOwn = Object.prototype.hasOwnProperty; |
28 |
|
29 |
/** |
30 |
* jQuery.toJSON |
31 |
* Converts the given argument into a JSON representation. |
32 |
* |
33 |
* @param o {Mixed} The json-serializable *thing* to be converted |
34 |
* |
35 |
* If an object has a toJSON prototype, that will be used to get the representation. |
36 |
* Non-integer/string keys are skipped in the object, as are keys that point to a |
37 |
* function. |
38 |
* |
39 |
*/ |
40 |
$.toJSON = typeof JSON === 'object' && JSON.stringify ? JSON.stringify : function (o) { |
41 |
if (o === null) { |
42 |
return 'null'; |
43 |
} |
44 |
|
45 |
var pairs, k, name, val, |
46 |
type = $.type(o); |
47 |
|
48 |
if (type === 'undefined') { |
49 |
return undefined; |
50 |
} |
51 |
|
52 |
// Also covers instantiated Number and Boolean objects, |
53 |
// which are typeof 'object' but thanks to $.type, we |
54 |
// catch them here. I don't know whether it is right |
55 |
// or wrong that instantiated primitives are not |
56 |
// exported to JSON as an {"object":..}. |
57 |
// We choose this path because that's what the browsers did. |
58 |
if (type === 'number' || type === 'boolean') { |
59 |
return String(o); |
60 |
} |
61 |
if (type === 'string') { |
62 |
return $.quoteString(o); |
63 |
} |
64 |
if (typeof o.toJSON === 'function') { |
65 |
return $.toJSON(o.toJSON()); |
66 |
} |
67 |
if (type === 'date') { |
68 |
var month = o.getUTCMonth() + 1, |
69 |
day = o.getUTCDate(), |
70 |
year = o.getUTCFullYear(), |
71 |
hours = o.getUTCHours(), |
72 |
minutes = o.getUTCMinutes(), |
73 |
seconds = o.getUTCSeconds(), |
74 |
milli = o.getUTCMilliseconds(); |
75 |
|
76 |
if (month < 10) { |
77 |
month = '0' + month; |
78 |
} |
79 |
if (day < 10) { |
80 |
day = '0' + day; |
81 |
} |
82 |
if (hours < 10) { |
83 |
hours = '0' + hours; |
84 |
} |
85 |
if (minutes < 10) { |
86 |
minutes = '0' + minutes; |
87 |
} |
88 |
if (seconds < 10) { |
89 |
seconds = '0' + seconds; |
90 |
} |
91 |
if (milli < 100) { |
92 |
milli = '0' + milli; |
93 |
} |
94 |
if (milli < 10) { |
95 |
milli = '0' + milli; |
96 |
} |
97 |
return '"' + year + '-' + month + '-' + day + 'T' + |
98 |
hours + ':' + minutes + ':' + seconds + |
99 |
'.' + milli + 'Z"'; |
100 |
} |
101 |
|
102 |
pairs = []; |
103 |
|
104 |
if ($.isArray(o)) { |
105 |
for (k = 0; k < o.length; k++) { |
106 |
pairs.push($.toJSON(o[k]) || 'null'); |
107 |
} |
108 |
return '[' + pairs.join(',') + ']'; |
109 |
} |
110 |
|
111 |
// Any other object (plain object, RegExp, ..) |
112 |
// Need to do typeof instead of $.type, because we also |
113 |
// want to catch non-plain objects. |
114 |
if (typeof o === 'object') { |
115 |
for (k in o) { |
116 |
// Only include own properties, |
117 |
// Filter out inherited prototypes |
118 |
if (hasOwn.call(o, k)) { |
119 |
// Keys must be numerical or string. Skip others |
120 |
type = typeof k; |
121 |
if (type === 'number') { |
122 |
name = '"' + k + '"'; |
123 |
} else if (type === 'string') { |
124 |
name = $.quoteString(k); |
125 |
} else { |
126 |
continue; |
127 |
} |
128 |
type = typeof o[k]; |
129 |
|
130 |
// Invalid values like these return undefined |
131 |
// from toJSON, however those object members |
132 |
// shouldn't be included in the JSON string at all. |
133 |
if (type !== 'function' && type !== 'undefined') { |
134 |
val = $.toJSON(o[k]); |
135 |
pairs.push(name + ':' + val); |
136 |
} |
137 |
} |
138 |
} |
139 |
return '{' + pairs.join(',') + '}'; |
140 |
} |
141 |
}; |
142 |
|
143 |
/** |
144 |
* jQuery.evalJSON |
145 |
* Evaluates a given json string. |
146 |
* |
147 |
* @param str {String} |
148 |
*/ |
149 |
$.evalJSON = typeof JSON === 'object' && JSON.parse ? JSON.parse : function (str) { |
150 |
/*jshint evil: true */ |
151 |
return eval('(' + str + ')'); |
152 |
}; |
153 |
|
154 |
/** |
155 |
* jQuery.secureEvalJSON |
156 |
* Evals JSON in a way that is *more* secure. |
157 |
* |
158 |
* @param str {String} |
159 |
*/ |
160 |
$.secureEvalJSON = typeof JSON === 'object' && JSON.parse ? JSON.parse : function (str) { |
161 |
var filtered = |
162 |
str |
163 |
.replace(/\\["\\\/bfnrtu]/g, '@') |
164 |
.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']') |
165 |
.replace(/(?:^|:|,)(?:\s*\[)+/g, ''); |
166 |
|
167 |
if (/^[\],:{}\s]*$/.test(filtered)) { |
168 |
/*jshint evil: true */ |
169 |
return eval('(' + str + ')'); |
170 |
} |
171 |
throw new SyntaxError('Error parsing JSON, source is not valid.'); |
172 |
}; |
173 |
|
174 |
/** |
175 |
* jQuery.quoteString |
176 |
* Returns a string-repr of a string, escaping quotes intelligently. |
177 |
* Mostly a support function for toJSON. |
178 |
* Examples: |
179 |
* >>> jQuery.quoteString('apple') |
180 |
* "apple" |
181 |
* |
182 |
* >>> jQuery.quoteString('"Where are we going?", she asked.') |
183 |
* "\"Where are we going?\", she asked." |
184 |
*/ |
185 |
$.quoteString = function (str) { |
186 |
if (str.match(escape)) { |
187 |
return '"' + str.replace(escape, function (a) { |
188 |
var c = meta[a]; |
189 |
if (typeof c === 'string') { |
190 |
return c; |
191 |
} |
192 |
c = a.charCodeAt(); |
193 |
return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16); |
194 |
}) + '"'; |
195 |
} |
196 |
return '"' + str + '"'; |
197 |
}; |
198 |
|
199 |
}(jQuery)); |