1 /* 2 * Copyright (c) 2013, 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 package sun.hotspot.tools.ctw; 25 26 import java.io.IOException; 27 import java.io.InputStream; 28 import java.nio.file.Files; 29 import java.nio.file.Path; 30 import java.util.jar.JarEntry; 31 import java.util.jar.JarFile; 32 import java.util.stream.Stream; 33 34 /** 35 * Handler for jar-files containing classes to compile. 36 */ 37 public class ClassPathJarEntry extends PathHandler.PathEntry { 38 private final JarFile jarFile; 39 40 public ClassPathJarEntry(Path root) { 41 super(root); 42 if (!Files.exists(root)) { 43 throw new Error(root + " file not found"); 44 } 45 try { 46 jarFile = new JarFile(root.toFile()); 47 } catch (IOException e) { 48 throw new Error("can not read " + root + " : " + e.getMessage(), e); 49 } 50 } 51 52 @Override 53 protected Stream<String> classes() { 54 return jarFile.stream() 55 .map(JarEntry::getName) 56 .filter(Utils::isClassFile) 57 .map(Utils::fileNameToClassName); 58 } 59 60 @Override 61 protected String description() { 62 return "# jar: " + root; 63 } 64 65 @Override 66 protected byte[] findByteCode(String classname) { 67 try { 68 String filename = Utils.classNameToFileName(classname); 69 JarEntry entry = jarFile.getJarEntry(filename); 70 71 if (entry == null) { 72 return null; 73 } 74 75 try (InputStream is = jarFile.getInputStream(entry)) { 76 return is.readAllBytes(); 77 } 78 79 } catch (IOException e) { 80 e.printStackTrace(CompileTheWorld.ERR); 81 return null; 82 } 83 } 84 } 85