json.js

		2007-03-20

		All of the code contained within this file is released into

		the public domain. Optionally, you may distribute this code

		under the terms of the GNU General Public License as well

		(public domain licensing allows this).

	if ( window.JSON )

	{

		return window.JSON.stringify(input);

	}

	var m = {

					'\b': '\\b',

					'\t': '\\t',

					'\n': '\\n',

					'\f': '\\f',

					'\r': '\\r',

					'"' : '\\"',

					'\\': '\\\\'

					};

	var t = typeof(input);

	switch(t)

	{

		case 'string':

			if (/["\\\x00-\x1f]/.test(input))

			{

					return '"' + input.replace(/([\x00-\x1f\\"])/g, function(a, b)

						{

							var c = m[b];

							if (c) {

									return c;

							}

							c = b.charCodeAt();

							return '\\u00' +

									Math.floor(c / 16).toString(16) +

									(c % 16).toString(16);

					}) + '"';

			}

			return '"' + input + '"';

			break;

		case 'array':

			var a = ['['],  

						b,          

						i,          

						l = input.length,

						v;          

				var p = function (s) {

						if (b) {

								a.push(',');

						}

						a.push(s);

						b = true;

				}

				for (i = 0; i < l; i += 1) {

						v = input[i];

						switch (typeof v) {

						case 'object':

							if (v) {

								p(toJSONString(v));

							} else {

								p("null");

							}

							break;

						case 'array':

						case 'string':

						case 'number':

						case 'boolean':

								p(toJSONString(v));

						}

				}

				a.push(']');

				return a.join('');

			break;

		case 'date':

			var f = function (n)

			{

				return n < 10 ? '0' + n : n;

			}

			return '"' + input.getFullYear() + '-' +

 								f(input.getMonth() + 1) + '-' +

 								f(input.getDate()) + 'T' +

 								f(input.getHours()) + ':' +

 								f(input.getMinutes()) + ':' +

 								f(input.getSeconds()) + '"';

		case 'boolean':

			return String(input);

			break;

		case 'number':

			return isFinite(input) ? String(input) : "null";

			break;

		case 'object':

			var a = ['{'],  

					b,          

					k,          

					v;          

			var p = function (s)

			{

				if (b)

				{

					a.push(',');

				}

				a.push(toJSONString(k), ':', s);

				b = true;

			}

			for (k in input) 

			{

				if (input.hasOwnProperty(k))

				{

					v = input[k];

					switch (typeof v) {

						case 'object':

							if (v) {

								p(toJSONString(v));

							} else {

								p("null");

							}

							break;

						case 'string':

						case 'number':

						case 'boolean':

							p(toJSONString(v));

							break;

					}

				}

			}

			a.push('}');

			return a.join('');

			break;

	}

	if ( window.JSON )

	{

		return window.JSON.parse(string);

	}

	try {

		if (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.

						test(string))

		{

				var j = eval('(' + string + ')');

				if (typeof filter === 'function') {

						function walk(k, v)

						{

								if (v && typeof v === 'object') {

										for (var i in v) {

												if (v.hasOwnProperty(i)) {

														v[i] = walk(i, v[i]);

												}

										}

								}

								return filter(k, v);

						}

						j = walk('', j);

				}

				return j;

		}

	} catch (e) {

	}

	throw new SyntaxError("parseJSON");