includes/clientside/static/json.js
author Dan Fuhry <dan@enanocms.org>
Tue, 03 Aug 2010 20:49:20 -0400
changeset 1285 4d511be69a5f
parent 1227 bdac73ed481e
permissions -rw-r--r--
Added an icon for Edit Sidebar admin page.

/*
		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).
		
*/

function toJSONString(input)
{
	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;
	}
}

function parseJSON(string, filter)
{
	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");
}