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/*
json2.js
2008-03-14
Public Domain
No warranty expressed or implied. Use at your own risk.
See http://www.JSON.org/js.html
This is a reference implementation. You are free to copy, modify, or
redistribute.
Use your own copy. It is extremely unwise to load third party
code into your pages.
*/
if (!this.JSON) {
JSON = function () {
function f(n) { // Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
Date.prototype.toJSON = function () {
return this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z';
};
var m = { // table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
};
function stringify(value, whitelist) {
var a, // The array holding the partial texts.
i, // The loop counter.
k, // The member key.
l, // Length.
r = /["\\\x00-\x1f\x7f-\x9f]/g,
v; // The member value.
switch (typeof value) {
case 'string':
return r.test(value) ?
'"' + value.replace(r, function (a) {
var c = m[a];
if (c) {
return c;
}
c = a.charCodeAt();
return '\\u00' + Math.floor(c / 16).toString(16) +
(c % 16).toString(16);
}) + '"' :
'"' + value + '"';
case 'number':
return isFinite(value) ? String(value) : 'null';
case 'boolean':
case 'null':
return String(value);
case 'object':
if (!value) {
return 'null';
}
if (typeof value.toJSON === 'function') {
return stringify(value.toJSON());
}
a = [];
if (typeof value.length === 'number' &&
!(value.propertyIsEnumerable('length'))) {
l = value.length;
for (i = 0; i < l; i += 1) {
a.push(stringify(value[i], whitelist) || 'null');
}
return '[' + a.join(',') + ']';
}
if (whitelist) {
l = whitelist.length;
for (i = 0; i < l; i += 1) {
k = whitelist[i];
if (typeof k === 'string') {
v = stringify(value[k], whitelist);
if (v) {
a.push(stringify(k) + ':' + v);
}
}
}
} else {
for (k in value) {
if (typeof k === 'string') {
v = stringify(value[k], whitelist);
if (v) {
a.push(stringify(k) + ':' + v);
}
}
}
}
return '{' + a.join(',') + '}';
}
}
return {
stringify: stringify,
parse: function (text, filter) {
var j;
function walk(k, v) {
var i, n;
if (v && typeof v === 'object') {
for (i in v) {
if (Object.prototype.hasOwnProperty.apply(v, [i])) {
n = walk(i, v[i]);
if (n !== undefined) {
v[i] = n;
} else {
delete v[i];
}
}
}
}
return filter(k, v);
}
if (/^[\],:{}\s]*$/.test(text.replace(/\\["\\\/bfnrtu]/g, '@').
replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').
replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
j = eval('(' + text + ')');
return typeof filter === 'function' ? walk('', j) : j;
}
throw new SyntaxError('parseJSON');
}
};
}();
}
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