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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);
+ }) + '"';
+ }
+ 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")
+ {
+ return $.quoteString(o);
+ }
+
+ // 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);