1 /* 2 * Copyright (c) 2013, 2014, 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 import java.io.File; 25 import java.io.FileInputStream; 26 import java.io.IOException; 27 import java.io.InputStream; 28 import java.net.URL; 29 import java.nio.file.Files; 30 import java.nio.file.Path; 31 import java.nio.file.Paths; 32 import java.nio.file.StandardCopyOption; 33 import java.util.Arrays; 34 35 /** 36 * A utility to copy the class and all it's inner classes to the specified directory. 37 * <p> 38 * Usage in jtreg: 39 * 40 * @build CopyClassFile 41 * @run main CopyClassFile package.class dest_directory 42 * 43 * In case the source file should be removed add -r option 44 */ 45 public class CopyClassFile { 46 47 private static final ClassLoader cl = CopyClassFile.class.getClassLoader(); 48 49 private static String destinationDir; 50 private static String className; 51 private static String classFile; 52 53 private static boolean removeSource = false; 54 main(String[] args)55 public static void main(String[] args) throws Exception { 56 if (args.length < 2) { 57 throw new IllegalArgumentException("Illegal usage: class name and destination directory should be specified"); 58 } 59 60 int classNameIndex = parseOptions(args); 61 62 className = args[classNameIndex]; 63 destinationDir = args[classNameIndex + 1]; 64 classFile = className.replaceAll("\\.", File.separator) + ".class"; 65 66 URL url = cl.getResource(classFile); 67 if (url == null) { 68 throw new RuntimeException("Could not find a class: " + classFile); 69 } 70 71 File[] files = new File(url.toURI()) 72 .getParentFile() 73 .listFiles((dir, name) -> name.startsWith(cutPackageName(className)) && name.endsWith(".class")); 74 75 Arrays.stream(files).forEach(CopyClassFile::copyFile); 76 } 77 parseOptions(String[] args)78 private static int parseOptions(String[] args) { 79 int optionsEnd = 0; 80 while (args[optionsEnd].startsWith("-")) { 81 switch (args[optionsEnd].substring(1)) { 82 case "r" : 83 removeSource = true; 84 break; 85 default: 86 throw new RuntimeException("Unrecognized option passed to CopyClassFile: " + args[optionsEnd]); 87 } 88 optionsEnd++; 89 } 90 return optionsEnd; 91 } 92 cutPackageName(String className)93 private static String cutPackageName(String className) { 94 int dotIndex = className.lastIndexOf(".") + 1; 95 if (dotIndex <= 0) { 96 return className; 97 } else { 98 return className.substring(dotIndex); 99 } 100 } 101 copyFile(File f)102 private static void copyFile(File f) { 103 try { 104 Path classFilePath = Paths.get(classFile); 105 String packagePath = classFilePath.getParent() == null ? "" : classFilePath.getParent().toString(); 106 Path p = Paths.get(destinationDir + packagePath + File.separator + f.getName()); 107 Files.createDirectories(p.getParent()); 108 try (InputStream is = new FileInputStream(f)) { 109 Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING); 110 } 111 112 if (removeSource && !f.delete()) { 113 throw new RuntimeException("Failed to delete a file"); 114 } 115 116 } catch (IOException ex) { 117 throw new RuntimeException("Could not copy file " + f, ex); 118 } 119 } 120 } 121