1 /* 2 * Copyright (c) 2017, 2018, 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 */ 23 24 25 26 package jdk.tools.jaotc.collect.jar; 27 28 import jdk.tools.jaotc.collect.ClassSource; 29 import jdk.tools.jaotc.collect.FileSupport; 30 import jdk.tools.jaotc.collect.SearchPath; 31 import jdk.tools.jaotc.collect.SourceProvider; 32 33 import java.net.MalformedURLException; 34 import java.nio.file.FileSystem; 35 import java.nio.file.FileSystems; 36 import java.nio.file.Path; 37 import java.nio.file.ProviderNotFoundException; 38 39 public final class JarSourceProvider implements SourceProvider { 40 private final FileSystem fileSystem; 41 private final FileSupport fileSupport; 42 public static final String TYPE = "jar"; 43 44 public JarSourceProvider() { 45 this(new FileSupport()); 46 } 47 48 public JarSourceProvider(FileSupport fileSupport) { 49 this.fileSupport = fileSupport; 50 fileSystem = FileSystems.getDefault(); 51 } 52 53 @Override 54 public ClassSource findSource(String name, SearchPath searchPath) { 55 Path fileName = fileSystem.getPath(name); 56 Path jarFile = searchPath.find(fileSystem, fileName); 57 58 if (!validPath(jarFile)) { 59 return null; 60 } 61 62 return createSource(jarFile); 63 } 64 65 private ClassSource createSource(Path jarFile) { 66 try { 67 Path jarRootPath = fileSupport.getJarFileSystemRoot(jarFile); 68 if (jarRootPath == null) { 69 return null; 70 } 71 ClassLoader classLoader = fileSupport.createClassLoader(jarFile); 72 return new JarFileSource(jarFile, jarRootPath, classLoader); 73 } catch (ProviderNotFoundException | MalformedURLException e) { 74 } 75 return null; 76 } 77 78 @Override 79 public boolean supports(String type) { 80 return TYPE.equals(type); 81 } 82 83 private boolean validPath(Path jarFile) { 84 return jarFile != null && !fileSupport.isDirectory(jarFile); 85 } 86 }