if (typeof Poly9 == 'undefined'){
 var Poly9 = {};
}

Poly9.URLParser = function(url) {
 this._fields = {'Username' : 4, 'Password' : 5, 'Port' : 7, 'Protocol' : 2, 'Host' : 6, 'Pathname' : 8, 'URL' : 0, 'Querystring' : 9, 'Fragment' : 10};
 this._values = {};
 this._regex = null;
 this.version = 0.1;
 this._regex = /^((\w+):\/\/)?((\w+):?(\w+)?@)?([^\/\?:]+):?(\d+)?(\/?[^\?#]+)?\??([^#]+)?#?(\w*)/;
 for(var f in this._fields){
  this['get' + f] = this._makeGetter(f);
 }
 if (typeof url != 'undefined'){
  this._parse(url);
 }
};
 
/**
 * @method 
 * @param {String} url	The url to parse
 * @exception {String} 	Throws an exception if the specified url is invalid
 */
Poly9.URLParser.prototype.setURL = function(url) {
  this._parse(url);
};

Poly9.URLParser.prototype._initValues = function() {
 for(var f in this._fields){
   this._values[f] = '';
 }
};

Poly9.URLParser.prototype._parse = function(url) {
  this._initValues();
  var r = this._regex.exec(url);
  if (!r){ throw "DPURLParser::_parse -> Invalid URL"; }
  for(var f in this._fields){
    if (typeof r[this._fields[f]] != 'undefined'){
      this._values[f] = r[this._fields[f]];
    }
 }
};

Poly9.URLParser.prototype._makeGetter = function(field) {
 return function() {
  return this._values[field];
 };
};