michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = ["Utils"];
michael@0: 
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: Cu.import("resource://gre/modules/Services.jsm", this);
michael@0: 
michael@0: this.Utils = Object.freeze({
michael@0:   makeURI: function (url) {
michael@0:     return Services.io.newURI(url, null, null);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Returns true if the |url| passed in is part of the given root |domain|.
michael@0:    * For example, if |url| is "www.mozilla.org", and we pass in |domain| as
michael@0:    * "mozilla.org", this will return true. It would return false the other way
michael@0:    * around.
michael@0:    */
michael@0:   hasRootDomain: function (url, domain) {
michael@0:     let host;
michael@0: 
michael@0:     try {
michael@0:       host = this.makeURI(url).host;
michael@0:     } catch (e) {
michael@0:       // The given URL probably doesn't have a host.
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     let index = host.indexOf(domain);
michael@0:     if (index == -1)
michael@0:       return false;
michael@0: 
michael@0:     if (host == domain)
michael@0:       return true;
michael@0: 
michael@0:     let prevChar = host[index - 1];
michael@0:     return (index == (host.length - domain.length)) &&
michael@0:            (prevChar == "." || prevChar == "/");
michael@0:   },
michael@0: 
michael@0:   shallowCopy: function (obj) {
michael@0:     let retval = {};
michael@0: 
michael@0:     for (let key of Object.keys(obj)) {
michael@0:       retval[key] = obj[key];
michael@0:     }
michael@0: 
michael@0:     return retval;
michael@0:   }
michael@0: });