$.unserialize [updated] for jQuery

jquery.unserialize-0.2.js

/**
 * $.unserialize
 *
 * Takes a string in format "param1=value1&param2=value2" and returns an object { param1: 'value1', param2: 'value2' }. 
 * If the "param1" ends with "[]" the param is treated as an array.
 * 
 * Parses the value as String, Int or Boolean
 * @todo: parseFloat could also be useful I guess.
 * 
 * Example:
 *
 * Input:  param1=value1&param2=value2
 * Return: { param1 : value1, param2: value2 }
 *
 * Input:  param1[]=value1&param1[]=value2
 * Return: { param1: [ value1, value2 ] }
 * 
 * Input:  param1[name1]=value1&param1[name2]=value2
 * Return: { param1: {name1 : value1, name2: value2} }
 */
(function($){
	function parseValue(strVal) {
		return ( strVal.match(/^[0-9]+$/) ) ? parseInt(strVal) : (strVal == 'true') ? true : (strVal == 'false') ? false : strVal.replace(/[+]/g, " ")
	}
	
	$.unserialize = function(serializedString){
		var str = decodeURIComponent(serializedString);
		var pairs = str.split('&');
		var obj = {}, p, idx, val, match, key, val;
		for (var i=0, n=pairs.length; i < n; i++) {
			p = pairs[i].split('=');
			idx = p[0];

			if (idx.indexOf("[]") == (idx.length - 2)) {
				// Eh um vetor
				var ind = idx.substring(0, idx.length-2)
				if (obj[ind] === undefined) {
					obj[ind] = [];
				}
				obj[ind].push(p[1]);
			}
			else if (match = idx.match(/([^\[]+)\[([^\]]+)\]$/)) {
				
				key = match[1];
				val = match[2];
				if (!obj[key]) {
					obj[key] = {}
				}
				obj[key][val] = parseValue(p[1])
			}
			else {
				obj[idx] = parseValue(p[1])
			}
		}
		return obj;
	};
})(jQuery);