1 /* 2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.net.util; 27 28 import java.net.URL; 29 30 /** 31 * URL Utility class. 32 */ 33 public class URLUtil { 34 /** 35 * Returns a string form of the url suitable for use as a key in HashMap/Sets. 36 * 37 * The string form should be behave in the same manner as the URL when 38 * compared for equality in a HashMap/Set, except that no nameservice 39 * lookup is done on the hostname (only string comparison), and the fragment 40 * is not considered. 41 * 42 * @see java.net.URLStreamHandler.sameFile(java.net.URL) 43 */ urlNoFragString(URL url)44 public static String urlNoFragString(URL url) { 45 StringBuilder strForm = new StringBuilder(); 46 47 String protocol = url.getProtocol(); 48 if (protocol != null) { 49 /* protocol is compared case-insensitive, so convert to lowercase */ 50 protocol = protocol.toLowerCase(); 51 strForm.append(protocol); 52 strForm.append("://"); 53 } 54 55 String host = url.getHost(); 56 if (host != null) { 57 /* host is compared case-insensitive, so convert to lowercase */ 58 host = host.toLowerCase(); 59 strForm.append(host); 60 61 int port = url.getPort(); 62 if (port == -1) { 63 /* if no port is specificed then use the protocols 64 * default, if there is one */ 65 port = url.getDefaultPort(); 66 } 67 if (port != -1) { 68 strForm.append(":").append(port); 69 } 70 } 71 72 String file = url.getFile(); 73 if (file != null) { 74 strForm.append(file); 75 } 76 77 return strForm.toString(); 78 } 79 } 80 81