function URI(url, settings) {
		var self = this, baseUri, base_url;

		url = trim(url);
		settings = self.settings = settings || {};
		baseUri = settings.base_uri;

		// Strange app protocol that isn't http/https or local anchor
		// For example: mailto,skype,tel etc.
		if (/^([\w\-]+):([^\/]{2})/i.test(url) || /^\s*#/.test(url)) {
			self.source = url;
			return;
		}

		var isProtocolRelative = url.indexOf('//') === 0;

		// Absolute path with no host, fake host and protocol
		if (url.indexOf('/') === 0 && !isProtocolRelative) {
			url = (baseUri ? baseUri.protocol || 'http' : 'http') + '://mce_host' + url;
		}

		// Relative path http:// or protocol relative //path
		if (!/^[\w\-]*:?\/\//.test(url)) {
			base_url = settings.base_uri ? settings.base_uri.path : new URI(location.href).directory;
			if (settings.base_uri.protocol === "") {
				url = '//mce_host' + self.toAbsPath(base_url, url);
			} else {
				url = /([^#?]*)([#?]?.*)/.exec(url);
				url = ((baseUri && baseUri.protocol) || 'http') + '://mce_host' + self.toAbsPath(base_url, url[1]) + url[2];
			}
		}

		// Parse URL (Credits goes to Steave, http://blog.stevenlevithan.com/archives/parseuri)
		url = url.replace(/@@/g, '(mce_at)'); // Zope 3 workaround, they use @@something

		/*jshint maxlen: 255 */
		/*eslint max-len: 0 */
		url = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@\/]*):?([^:@\/]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/.exec(url);

		each(queryParts, function(v, i) {
			var part = url[i];

			// Zope 3 workaround, they use @@something
			if (part) {
				part = part.replace(/\(mce_at\)/g, '@@');
			}

			self[v] = part;
		});

		if (baseUri) {
			if (!self.protocol) {
				self.protocol = baseUri.protocol;
			}

			if (!self.userInfo) {
				self.userInfo = baseUri.userInfo;
			}

			if (!self.port && self.host === 'mce_host') {
				self.port = baseUri.port;
			}

			if (!self.host || self.host === 'mce_host') {
				self.host = baseUri.host;
			}

			self.source = '';
		}

		if (isProtocolRelative) {
			self.protocol = '';
		}

		//t.path = t.path || '/';
	}
Constructs a new URI instance.

@constructor
@method URI
@param {String} url URI string to parse.
@param {Object} settings Optional settings object.