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