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/*
* jQuery JSON Plugin
* version: 1.0 (2008-04-17)
*
* This document is licensed as free software under the terms of the
* MIT License: http://www.opensource.org/licenses/mit-license.php
*
* Brantley Harris technically wrote this plugin, but 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. I really just cleaned it up.
*
* It is also based heavily on MochiKit's serializeJSON, which is
* copywrited 2005 by Bob Ippolito.
*/
(function($) {
function toIntegersAtLease(n)
// Format integers to have at least two digits.
{
return n < 10 ? '0' + n : n;
}
Date.prototype.toJSON = function(date)
// Yes, it polutes the Date namespace, but we'll allow it here, as
// it's damned usefull.
{
return this.getUTCFullYear() + '-' +
toIntegersAtLease(this.getUTCMonth()) + '-' +
toIntegersAtLease(this.getUTCDate());
};
var escapeable = /["\\\x00-\x1f\x7f-\x9f]/g;
var meta = { // table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
};
$.quoteString = function(string)
// Places quotes around a string, inteligently.
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.
{
//if (escapeable.test(string))
//{
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);
}) + '"';
//}
//else{
// string = string.replace('\n','\\n');
//}
return '"' + string + '"';
};
$.toJSON = function(o, compact)
{
var type = typeof(o);
if (type == "undefined")
return "undefined";
else if (type == "number" || type == "boolean")
return o + "";
else if (o === null)
return "null";
// Is it a string?
if (type == "string")
{
var str = $.quoteString(o);
return str;
}
// Does it have a .toJSON function?
if (type == "object" && typeof o.toJSON == "function")
return o.toJSON(compact);
// Is it an array?
if (type != "function" && typeof(o.length) == "number")
{
var ret = [];
for (var i = 0; i < o.length; i++) {
ret.push( $.toJSON(o[i], compact) );
}
if (compact)
return "[" + ret.join(",") + "]";
else
return "[" + ret.join(", ") + "]";
}
// If it's a function, we have to warn somebody!
if (type == "function") {
throw new TypeError("Unable to convert object of type 'function' to json.");
}
// It's probably an object, then.
var ret = [];
for (var k in o) {
var name;
type = typeof(k);
if (type == "number")
name = '"' + k + '"';
else if (type == "string")
name = $.quoteString(k);
else
continue; //skip non-string or number keys
var val = $.toJSON(o[k], compact);
if (typeof(val) != "string") {
// skip non-serializable values
continue;
}
if (compact)
ret.push(name + ":" + val);
else
ret.push(name + ": " + val);
}
return "{" + ret.join(", ") + "}";
};
$.compactJSON = function(o)
{
return $.toJSON(o, true);
};
$.evalJSON = function(src)
// Evals JSON that we know to be safe.
{
return eval("(" + src + ")");
};
$.secureEvalJSON = function(src)
// Evals JSON in a way that is *more* secure.
{
var filtered = src;
filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@');
filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
if (/^[\],:{}\s]*$/.test(filtered))
return eval("(" + src + ")");
else
throw new SyntaxError("Error parsing JSON, source is not valid.");
};
})(jQuery);