Parse URL

parseUrl.js

// Parse URL
// References:
//  http://james.padolsey.com/javascript/parsing-urls-with-the-dom/
//  https://github.com/angular/angular.js/blob/c94329a891a1c082567c490ccf58ba8592b464ad/src/ng/urlUtils.js
(function() {
  window.parseUrl = function(url) {
    var href = url,
      a = document.createElement('a');
    if (document.documentMode) {
      a.setAttribute('href', href);
      href = a.href;
    }
    a.setAttribute('href', href);
    return {
      source: url,
      protocol: a.protocol.replace(':', ''),
      secure: (a.protocol === 'https:'),
      host: a.host,
      hostname: a.hostname,
      port: a.port,
      query: a.search,
      params: (function(){
        var ret = {},
          seg = a.search.replace(/^\?/,'').split('&'),
          len = seg.length, i = 0, s, key, val;
        for (; i < len; i++) {
          if (!seg[i]) { continue; }
          s = seg[i].split('=');
          key = s[0]; val = s[1];
          if (ret[key]) {
            if (typeof ret[key] === 'string') {
              ret[key] = [ ret[key], val ];
            } else {
              ret[key].push(val);
            }
          } else {
            ret[key] = val;
          }
        }
        return ret;
      })(),
      file: (a.pathname.match(/\/?([^\/?#]+)$/i) || [,''])[1],
      hash: a.hash.replace('#', ''),
      path: a.pathname.replace(/^([^\/])/,'/$1'),
      relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
      segments: a.pathname.replace(/^\//, '').split('/'),
      toString: function(){
        var ret = this.protocol + '://' + this.hostname +
          (this.port ? ':' + this.port : '') + this.path,
          names = [], name, i, val;
        for (name in this.params) {
          val = this.params[name];
          if (typeof val === 'string') {
            names.push(name + '=' + val);
          } else if (Object.prototype.toString.call(val) === '[object Array]') {
            for (i = 0; i < val.length; i++) {
              names.push(name + '=' + val[i]);
            }
          }
        }
        if (names.length) {
          ret += '?' + names.join('&');
        }
        if (this.hash) {
          ret += '#' + this.hash;
        }
        return ret;
      }
    };
  };
}());