1/* 2 * Copyright (c) 2017, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23package jdk.tools.jaotc.collect.jar; 24 25import jdk.tools.jaotc.collect.ClassSource; 26import jdk.tools.jaotc.collect.FileSupport; 27import jdk.tools.jaotc.collect.SearchPath; 28import jdk.tools.jaotc.collect.SourceProvider; 29 30import java.net.MalformedURLException; 31import java.nio.file.FileSystem; 32import java.nio.file.FileSystems; 33import java.nio.file.Path; 34import java.nio.file.ProviderNotFoundException; 35 36public class JarSourceProvider implements SourceProvider { 37 private final FileSystem fileSystem; 38 private final FileSupport fileSupport; 39 public final static String TYPE = "jar"; 40 41 public JarSourceProvider() { 42 this(new FileSupport()); 43 } 44 45 public JarSourceProvider(FileSupport fileSupport) { 46 this.fileSupport = fileSupport; 47 fileSystem = FileSystems.getDefault(); 48 } 49 50 @Override 51 public ClassSource findSource(String name, SearchPath searchPath) { 52 Path fileName = fileSystem.getPath(name); 53 Path jarFile = searchPath.find(fileSystem, fileName); 54 55 if (!validPath(jarFile)) { 56 return null; 57 } 58 59 return createSource(jarFile); 60 } 61 62 private ClassSource createSource(Path jarFile) { 63 try { 64 Path jarRootPath = fileSupport.getJarFileSystemRoot(jarFile); 65 if (jarRootPath == null) { 66 return null; 67 } 68 ClassLoader classLoader = fileSupport.createClassLoader(jarFile); 69 return new JarFileSource(jarFile, jarRootPath, classLoader); 70 } catch (ProviderNotFoundException | MalformedURLException e) { 71 } 72 return null; 73 } 74 75 @Override 76 public boolean supports(String type) { 77 return TYPE.equals(type); 78 } 79 80 private boolean validPath(Path jarFile) { 81 return jarFile != null && !fileSupport.isDirectory(jarFile); 82 } 83} 84