121 lines
4.2 KiB
Java
121 lines
4.2 KiB
Java
/*
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* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.StandardCopyOption;
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import java.util.Arrays;
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/**
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* A utility to copy the class and all it's inner classes to the specified directory.
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* <p>
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* Usage in jtreg:
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*
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* @build CopyClassFile
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* @run main CopyClassFile package.class dest_directory
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*
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* In case the source file should be removed add -r option
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*/
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public class CopyClassFile {
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private static final ClassLoader cl = CopyClassFile.class.getClassLoader();
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private static String destinationDir;
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private static String className;
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private static String classFile;
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private static boolean removeSource = false;
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public static void main(String[] args) throws Exception {
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if (args.length < 2) {
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throw new IllegalArgumentException("Illegal usage: class name and destination directory should be specified");
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}
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int classNameIndex = parseOptions(args);
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className = args[classNameIndex];
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destinationDir = args[classNameIndex + 1];
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classFile = className.replaceAll("\\.", File.separator) + ".class";
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URL url = cl.getResource(classFile);
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if (url == null) {
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throw new RuntimeException("Could not find a class: " + classFile);
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}
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File[] files = new File(url.toURI())
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.getParentFile()
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.listFiles((dir, name) -> name.startsWith(cutPackageName(className)) && name.endsWith(".class"));
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Arrays.stream(files).forEach(CopyClassFile::copyFile);
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}
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private static int parseOptions(String[] args) {
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int optionsEnd = 0;
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while (args[optionsEnd].startsWith("-")) {
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switch (args[optionsEnd].substring(1)) {
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case "r" :
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removeSource = true;
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break;
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default:
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throw new RuntimeException("Unrecognized option passed to CopyClassFile: " + args[optionsEnd]);
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}
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optionsEnd++;
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}
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return optionsEnd;
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}
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private static String cutPackageName(String className) {
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int dotIndex = className.lastIndexOf(".") + 1;
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if (dotIndex <= 0) {
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return className;
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} else {
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return className.substring(dotIndex);
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}
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}
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private static void copyFile(File f) {
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try {
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Path classFilePath = Paths.get(classFile);
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String packagePath = classFilePath.getParent() == null ? "" : classFilePath.getParent().toString();
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Path p = Paths.get(destinationDir + packagePath + File.separator + f.getName());
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Files.createDirectories(p.getParent());
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try (InputStream is = new FileInputStream(f)) {
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Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
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}
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if (removeSource && !f.delete()) {
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throw new RuntimeException("Failed to delete a file");
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}
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} catch (IOException ex) {
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throw new RuntimeException("Could not copy file " + f, ex);
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}
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}
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}
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