Improve code quality and write tests

node_modules/urlgrey/browser/mocha.css

@@ -0,0 +1,270 @@
+@charset "utf-8";
+
+body {
+  margin:0;
+}
+
+#mocha {
+  font: 20px/1.5 "Helvetica Neue", Helvetica, Arial, sans-serif;
+  margin: 60px 50px;
+}
+
+#mocha ul,
+#mocha li {
+  margin: 0;
+  padding: 0;
+}
+
+#mocha ul {
+  list-style: none;
+}
+
+#mocha h1,
+#mocha h2 {
+  margin: 0;
+}
+
+#mocha h1 {
+  margin-top: 15px;
+  font-size: 1em;
+  font-weight: 200;
+}
+
+#mocha h1 a {
+  text-decoration: none;
+  color: inherit;
+}
+
+#mocha h1 a:hover {
+  text-decoration: underline;
+}
+
+#mocha .suite .suite h1 {
+  margin-top: 0;
+  font-size: .8em;
+}
+
+#mocha .hidden {
+  display: none;
+}
+
+#mocha h2 {
+  font-size: 12px;
+  font-weight: normal;
+  cursor: pointer;
+}
+
+#mocha .suite {
+  margin-left: 15px;
+}
+
+#mocha .test {
+  margin-left: 15px;
+  overflow: hidden;
+}
+
+#mocha .test.pending:hover h2::after {
+  content: '(pending)';
+  font-family: arial, sans-serif;
+}
+
+#mocha .test.pass.medium .duration {
+  background: #c09853;
+}
+
+#mocha .test.pass.slow .duration {
+  background: #b94a48;
+}
+
+#mocha .test.pass::before {
+  content: '✓';
+  font-size: 12px;
+  display: block;
+  float: left;
+  margin-right: 5px;
+  color: #00d6b2;
+}
+
+#mocha .test.pass .duration {
+  font-size: 9px;
+  margin-left: 5px;
+  padding: 2px 5px;
+  color: #fff;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.2);
+  -moz-box-shadow: inset 0 1px 1px rgba(0,0,0,.2);
+  box-shadow: inset 0 1px 1px rgba(0,0,0,.2);
+  -webkit-border-radius: 5px;
+  -moz-border-radius: 5px;
+  -ms-border-radius: 5px;
+  -o-border-radius: 5px;
+  border-radius: 5px;
+}
+
+#mocha .test.pass.fast .duration {
+  display: none;
+}
+
+#mocha .test.pending {
+  color: #0b97c4;
+}
+
+#mocha .test.pending::before {
+  content: '◦';
+  color: #0b97c4;
+}
+
+#mocha .test.fail {
+  color: #c00;
+}
+
+#mocha .test.fail pre {
+  color: black;
+}
+
+#mocha .test.fail::before {
+  content: '✖';
+  font-size: 12px;
+  display: block;
+  float: left;
+  margin-right: 5px;
+  color: #c00;
+}
+
+#mocha .test pre.error {
+  color: #c00;
+  max-height: 300px;
+  overflow: auto;
+}
+
+/**
+ * (1): approximate for browsers not supporting calc
+ * (2): 42 = 2*15 + 2*10 + 2*1 (padding + margin + border)
+ *      ^^ seriously
+ */
+#mocha .test pre {
+  display: block;
+  float: left;
+  clear: left;
+  font: 12px/1.5 monaco, monospace;
+  margin: 5px;
+  padding: 15px;
+  border: 1px solid #eee;
+  max-width: 85%; /*(1)*/
+  max-width: calc(100% - 42px); /*(2)*/
+  word-wrap: break-word;
+  border-bottom-color: #ddd;
+  -webkit-border-radius: 3px;
+  -webkit-box-shadow: 0 1px 3px #eee;
+  -moz-border-radius: 3px;
+  -moz-box-shadow: 0 1px 3px #eee;
+  border-radius: 3px;
+}
+
+#mocha .test h2 {
+  position: relative;
+}
+
+#mocha .test a.replay {
+  position: absolute;
+  top: 3px;
+  right: 0;
+  text-decoration: none;
+  vertical-align: middle;
+  display: block;
+  width: 15px;
+  height: 15px;
+  line-height: 15px;
+  text-align: center;
+  background: #eee;
+  font-size: 15px;
+  -moz-border-radius: 15px;
+  border-radius: 15px;
+  -webkit-transition: opacity 200ms;
+  -moz-transition: opacity 200ms;
+  transition: opacity 200ms;
+  opacity: 0.3;
+  color: #888;
+}
+
+#mocha .test:hover a.replay {
+  opacity: 1;
+}
+
+#mocha-report.pass .test.fail {
+  display: none;
+}
+
+#mocha-report.fail .test.pass {
+  display: none;
+}
+
+#mocha-report.pending .test.pass,
+#mocha-report.pending .test.fail {
+  display: none;
+}
+#mocha-report.pending .test.pass.pending {
+  display: block;
+}
+
+#mocha-error {
+  color: #c00;
+  font-size: 1.5em;
+  font-weight: 100;
+  letter-spacing: 1px;
+}
+
+#mocha-stats {
+  position: fixed;
+  top: 15px;
+  right: 10px;
+  font-size: 12px;
+  margin: 0;
+  color: #888;
+  z-index: 1;
+}
+
+#mocha-stats .progress {
+  float: right;
+  padding-top: 0;
+}
+
+#mocha-stats em {
+  color: black;
+}
+
+#mocha-stats a {
+  text-decoration: none;
+  color: inherit;
+}
+
+#mocha-stats a:hover {
+  border-bottom: 1px solid #eee;
+}
+
+#mocha-stats li {
+  display: inline-block;
+  margin: 0 5px;
+  list-style: none;
+  padding-top: 11px;
+}
+
+#mocha-stats canvas {
+  width: 40px;
+  height: 40px;
+}
+
+#mocha code .comment { color: #ddd; }
+#mocha code .init { color: #2f6fad; }
+#mocha code .string { color: #5890ad; }
+#mocha code .keyword { color: #8a6343; }
+#mocha code .number { color: #2f6fad; }
+
+@media screen and (max-device-width: 480px) {
+  #mocha {
+    margin: 60px 0px;
+  }
+
+  #mocha #stats {
+    position: absolute;
+  }
+}

node_modules/urlgrey/browser/querystring.js

@@ -0,0 +1,147 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// Query String Utilities
+
+var QueryString = exports;
+var isString = require('../util').isString;
+var isArray = require('../util').isArray;
+var isBoolean = require('../util').isBoolean;
+var isNumber = require('../util').isNumber;
+var isObject = require('../util').isObject;
+var isNull = require('../util').isNull;
+var keys = require('../util').keys;
+var map = require('../util').map;
+
+// If obj.hasOwnProperty has been overridden, then calling
+// obj.hasOwnProperty(prop) will break.
+// See: https://github.com/joyent/node/issues/1707
+function hasOwnProperty(obj, prop) {
+  return Object.prototype.hasOwnProperty.call(obj, prop);
+}
+
+
+function charCode(c) {
+  return c.charCodeAt(0);
+}
+
+QueryString.unescape = function(s) {
+  return decodeURIComponent(s);
+};
+
+
+QueryString.escape = function(str) {
+  return encodeURIComponent(str);
+};
+
+var stringifyPrimitive = function(v) {
+  if (isString(v))
+    return v;
+  if (isBoolean(v))
+    return v ? 'true' : 'false';
+  if (isNumber(v))
+    return isFinite(v) ? v : '';
+  return '';
+};
+
+
+QueryString.stringify = QueryString.encode = function(obj, sep, eq, name) {
+  sep = sep || '&';
+  eq = eq || '=';
+  if (isNull(obj)) {
+    obj = undefined;
+  }
+
+  if (isObject(obj)) {
+    return map(keys(obj), function(k) {
+      var ks = QueryString.escape(stringifyPrimitive(k)) + eq;
+      if (isArray(obj[k])) {
+        return map(obj[k], function(v) {
+          return ks + QueryString.escape(stringifyPrimitive(v));
+        }).join(sep);
+      } else {
+        return ks + QueryString.escape(stringifyPrimitive(obj[k]));
+      }
+    }).join(sep);
+
+  }
+
+  if (!name) return '';
+  return QueryString.escape(stringifyPrimitive(name)) + eq +
+         QueryString.escape(stringifyPrimitive(obj));
+};
+
+// Parse a key=val string.
+QueryString.parse = QueryString.decode = function(qs, sep, eq, options) {
+  sep = sep || '&';
+  eq = eq || '=';
+  var obj = {};
+
+  if (!isString(qs) || qs.length === 0) {
+    return obj;
+  }
+
+  var regexp = /\+/g;
+  qs = qs.split(sep);
+
+  var maxKeys = 1000;
+  if (options && isNumber(options.maxKeys)) {
+    maxKeys = options.maxKeys;
+  }
+
+  var len = qs.length;
+  // maxKeys <= 0 means that we should not limit keys count
+  if (maxKeys > 0 && len > maxKeys) {
+    len = maxKeys;
+  }
+
+  for (var i = 0; i < len; ++i) {
+    var x = qs[i].replace(regexp, '%20'),
+        idx = x.indexOf(eq),
+        kstr, vstr, k, v;
+
+    if (idx >= 0) {
+      kstr = x.substr(0, idx);
+      vstr = x.substr(idx + 1);
+    } else {
+      kstr = x;
+      vstr = '';
+    }
+
+    try {
+      k = decodeURIComponent(kstr);
+      v = decodeURIComponent(vstr);
+    } catch (e) {
+      k = QueryString.unescape(kstr, true);
+      v = QueryString.unescape(vstr, true);
+    }
+
+    if (!hasOwnProperty(obj, k)) {
+      obj[k] = v;
+    } else if (isArray(obj[k])) {
+      obj[k].push(v);
+    } else {
+      obj[k] = [obj[k], v];
+    }
+  }
+
+  return obj;
+};

node_modules/urlgrey/browser/url.js

@@ -0,0 +1,424 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var punycode = { encode : function (s) { return s; } };
+if (!String.prototype.trim) {
+  String.prototype.trim = function () {
+    return this.replace(/^\s+|\s+$/g, '');
+  };
+}
+
+var isObject = require('../util').isObject;
+var isString = require('../util').isString;
+var keys = require('../util').keys;
+var substr = require('../util').substr;
+
+exports.parse = urlParse;
+exports.format = urlFormat;
+
+exports.Url = Url;
+
+function Url() {
+  this.protocol = null;
+  this.slashes = null;
+  this.auth = null;
+  this.host = null;
+  this.port = null;
+  this.hostname = null;
+  this.hash = null;
+  this.search = null;
+  this.query = null;
+  this.pathname = null;
+  this.path = null;
+  this.href = null;
+}
+
+// Reference: RFC 3986, RFC 1808, RFC 2396
+
+// define these here so at least they only have to be
+// compiled once on the first module load.
+var protocolPattern = /^([a-z0-9.+-]+:)/i,
+    portPattern = /:[0-9]*$/,
+
+    // RFC 2396: characters reserved for delimiting URLs.
+    // We actually just auto-escape these.
+    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],
+
+    // RFC 2396: characters not allowed for various reasons.
+    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),
+
+    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
+    autoEscape = ['\''].concat(unwise),
+    // Characters that are never ever allowed in a hostname.
+    // Note that any invalid chars are also handled, but these
+    // are the ones that are *expected* to be seen, so we fast-path
+    // them.
+    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
+    hostEndingChars = ['/', '?', '#'],
+    hostnameMaxLen = 255,
+    hostnamePartPattern = /^[a-z0-9A-Z_-]{0,63}$/,
+    hostnamePartStart = /^([a-z0-9A-Z_-]{0,63})(.*)$/,
+    // protocols that can allow "unsafe" and "unwise" chars.
+    unsafeProtocol = {
+      'javascript': true,
+      'javascript:': true
+    },
+    // protocols that never have a hostname.
+    hostlessProtocol = {
+      'javascript': true,
+      'javascript:': true
+    },
+    // protocols that always contain a // bit.
+    slashedProtocol = {
+      'http': true,
+      'https': true,
+      'ftp': true,
+      'gopher': true,
+      'file': true,
+      'http:': true,
+      'https:': true,
+      'ftp:': true,
+      'gopher:': true,
+      'file:': true
+    },
+    querystring = require('querystring');
+
+function urlParse(url, parseQueryString, slashesDenoteHost) {
+  if (url && isObject(url) && url instanceof Url) return url;
+
+  var u = new Url();
+  u.parse(url, parseQueryString, slashesDenoteHost);
+  return u;
+}
+
+Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
+  if (!isString(url)) {
+    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
+  }
+
+  var rest = url;
+
+  // trim before proceeding.
+  // This is to support parse stuff like "  http://foo.com  \n"
+  rest = rest.trim();
+
+  var proto = protocolPattern.exec(rest);
+  if (proto) {
+    proto = proto[0];
+    var lowerProto = proto.toLowerCase();
+    this.protocol = lowerProto;
+    rest = rest.substr(proto.length);
+  }
+
+  // figure out if it's got a host
+  // user@server is *always* interpreted as a hostname, and url
+  // resolution will treat //foo/bar as host=foo,path=bar because that's
+  // how the browser resolves relative URLs.
+  var slashes;
+  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
+    slashes = rest.substr(0, 2) === '//';
+    if (slashes && !(proto && hostlessProtocol[proto])) {
+      rest = rest.substr(2);
+      this.slashes = true;
+    }
+  }
+
+  if (!hostlessProtocol[proto] &&
+      (slashes || (proto && !slashedProtocol[proto]))) {
+
+    // there's a hostname.
+    // the first instance of /, ?, ;, or # ends the host.
+    //
+    // If there is an @ in the hostname, then non-host chars *are* allowed
+    // to the left of the last @ sign, unless some host-ending character
+    // comes *before* the @-sign.
+    // URLs are obnoxious.
+    //
+    // ex:
+    // http://a@b@c/ => user:a@b host:c
+    // http://a@b?@c => user:a host:c path:/?@c
+
+    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
+    // Review our test case against browsers more comprehensively.
+
+    // find the first instance of any hostEndingChars
+    var hostEnd = -1;
+    for (var i = 0; i < hostEndingChars.length; i++) {
+      var hec = rest.indexOf(hostEndingChars[i]);
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
+        hostEnd = hec;
+    }
+
+    // at this point, either we have an explicit point where the
+    // auth portion cannot go past, or the last @ char is the decider.
+    var auth, atSign;
+    if (hostEnd === -1) {
+      // atSign can be anywhere.
+      atSign = rest.lastIndexOf('@');
+    } else {
+      // atSign must be in auth portion.
+      // http://a@b/c@d => host:b auth:a path:/c@d
+      atSign = rest.lastIndexOf('@', hostEnd);
+    }
+
+    // Now we have a portion which is definitely the auth.
+    // Pull that off.
+    if (atSign !== -1) {
+      auth = rest.slice(0, atSign);
+      rest = rest.slice(atSign + 1);
+      this.auth = decodeURIComponent(auth);
+    }
+
+    // the host is the remaining to the left of the first non-host char
+    hostEnd = -1;
+    for (var i = 0; i < nonHostChars.length; i++) {
+      var hec = rest.indexOf(nonHostChars[i]);
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
+        hostEnd = hec;
+    }
+    // if we still have not hit it, then the entire thing is a host.
+    if (hostEnd === -1)
+      hostEnd = rest.length;
+
+    this.host = rest.slice(0, hostEnd);
+    rest = rest.slice(hostEnd);
+
+    // pull out port.
+    this.parseHost();
+
+    // we've indicated that there is a hostname,
+    // so even if it's empty, it has to be present.
+    this.hostname = this.hostname || '';
+
+    // if hostname begins with [ and ends with ]
+    // assume that it's an IPv6 address.
+    var ipv6Hostname = this.hostname[0] === '[' &&
+        this.hostname[this.hostname.length - 1] === ']';
+
+    // validate a little.
+    if (!ipv6Hostname) {
+      var hostparts = this.hostname.split(/\./);
+      for (var i = 0, l = hostparts.length; i < l; i++) {
+        var part = hostparts[i];
+        if (!part) continue;
+        if (!part.match(hostnamePartPattern)) {
+          var newpart = '';
+          for (var j = 0, k = part.length; j < k; j++) {
+            if (part.charCodeAt(j) > 127) {
+              // we replace non-ASCII char with a temporary placeholder
+              // we need this to make sure size of hostname is not
+              // broken by replacing non-ASCII by nothing
+              newpart += 'x';
+            } else {
+              newpart += part[j];
+            }
+          }
+          // we test again with ASCII char only
+          if (!newpart.match(hostnamePartPattern)) {
+            var validParts = hostparts.slice(0, i);
+            var notHost = hostparts.slice(i + 1);
+            var bit = part.match(hostnamePartStart);
+            if (bit) {
+              validParts.push(bit[1]);
+              notHost.unshift(bit[2]);
+            }
+            if (notHost.length) {
+              rest = '/' + notHost.join('.') + rest;
+            }
+            this.hostname = validParts.join('.');
+            break;
+          }
+        }
+      }
+    }
+
+    if (this.hostname.length > hostnameMaxLen) {
+      this.hostname = '';
+    } else {
+      // hostnames are always lower case.
+      this.hostname = this.hostname.toLowerCase();
+    }
+
+    if (!ipv6Hostname) {
+      // IDNA Support: Returns a puny coded representation of "domain".
+      // It only converts the part of the domain name that
+      // has non ASCII characters. I.e. it dosent matter if
+      // you call it with a domain that already is in ASCII.
+      var domainArray = this.hostname.split('.');
+      var newOut = [];
+      for (var i = 0; i < domainArray.length; ++i) {
+        var s = domainArray[i];
+        newOut.push(s.match(/[^A-Za-z0-9_-]/) ?
+            'xn--' + punycode.encode(s) : s);
+      }
+      this.hostname = newOut.join('.');
+    }
+
+    var p = this.port ? ':' + this.port : '';
+    var h = this.hostname || '';
+    this.host = h + p;
+    this.href += this.host;
+
+    // strip [ and ] from the hostname
+    // the host field still retains them, though
+    if (ipv6Hostname) {
+      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
+      if (rest[0] !== '/') {
+        rest = '/' + rest;
+      }
+    }
+  }
+
+  // now rest is set to the post-host stuff.
+  // chop off any delim chars.
+  if (!unsafeProtocol[lowerProto]) {
+
+    // First, make 100% sure that any "autoEscape" chars get
+    // escaped, even if encodeURIComponent doesn't think they
+    // need to be.
+    for (var i = 0, l = autoEscape.length; i < l; i++) {
+      var ae = autoEscape[i];
+      var esc = encodeURIComponent(ae);
+      if (esc === ae) {
+        esc = escape(ae);
+      }
+      rest = rest.split(ae).join(esc);
+    }
+  }
+
+
+  // chop off from the tail first.
+  var hash = rest.indexOf('#');
+  if (hash !== -1) {
+    // got a fragment string.
+    this.hash = rest.substr(hash);
+    rest = rest.slice(0, hash);
+  }
+  var qm = rest.indexOf('?');
+  if (qm !== -1) {
+    this.search = rest.substr(qm);
+    this.query = rest.substr(qm + 1);
+    if (parseQueryString) {
+      this.query = querystring.parse(this.query);
+    }
+    rest = rest.slice(0, qm);
+  } else if (parseQueryString) {
+    // no query string, but parseQueryString still requested
+    this.search = '';
+    this.query = {};
+  }
+  if (rest) this.pathname = rest;
+  if (slashedProtocol[lowerProto] &&
+      this.hostname && !this.pathname) {
+    this.pathname = '/';
+  }
+
+  //to support http.request
+  if (this.pathname || this.search) {
+    var p = this.pathname || '';
+    var s = this.search || '';
+    this.path = p + s;
+  }
+
+  // finally, reconstruct the href based on what has been validated.
+  this.href = this.format();
+  return this;
+};
+
+// format a parsed object into a url string
+function urlFormat(obj) {
+  // ensure it's an object, and not a string url.
+  // If it's an obj, this is a no-op.
+  // this way, you can call url_format() on strings
+  // to clean up potentially wonky urls.
+  if (isString(obj)) obj = urlParse(obj);
+  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
+  return obj.format();
+}
+
+Url.prototype.format = function() {
+  var auth = this.auth || '';
+  if (auth) {
+    auth = encodeURIComponent(auth);
+    auth = auth.replace(/%3A/i, ':');
+    auth += '@';
+  }
+
+  var protocol = this.protocol || '',
+      pathname = this.pathname || '',
+      hash = this.hash || '',
+      host = false,
+      query = '';
+
+  if (this.host) {
+    host = auth + this.host;
+  } else if (this.hostname) {
+    host = auth + (this.hostname.indexOf(':') === -1 ?
+        this.hostname :
+        '[' + this.hostname + ']');
+    if (this.port) {
+      host += ':' + this.port;
+    }
+  }
+
+  if (this.query &&
+      isObject(this.query) &&
+      keys(this.query).length) {
+    query = querystring.stringify(this.query);
+  }
+
+  var search = this.search || (query && ('?' + query)) || '';
+
+  if (protocol && substr(protocol, -1) !== ':') protocol += ':';
+
+  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
+  // unless they had them to begin with.
+  if (this.slashes ||
+      (!protocol || slashedProtocol[protocol]) && host !== false) {
+    host = '//' + (host || '');
+    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
+  } else if (!host) {
+    host = '';
+  }
+
+  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
+  if (search && search.charAt(0) !== '?') search = '?' + search;
+
+  pathname = pathname.replace(/[?#]/g, function(match) {
+    return encodeURIComponent(match);
+  });
+  search = search.replace('#', '%23');
+
+  return protocol + host + pathname + search + hash;
+};
+
+Url.prototype.parseHost = function() {
+  var host = this.host;
+  var port = portPattern.exec(host);
+  if (port) {
+    port = port[0];
+    if (port !== ':') {
+      this.port = port.substr(1);
+    }
+    host = host.substr(0, host.length - port.length);
+  }
+  if (host) this.hostname = host;
+};