/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.jar.JarEntry;
import java.util.jar.JarInputStream;
import java.util.jar.JarOutputStream;
/**
* A collection of jar utilities
*
* @author thomas.diesler@jboss.org
* @version $Revision: 81011 $
*/
public class JarUtils {
/**
* Add jar contents to the deployment archive under the given prefix
*/
public static String[] addJar(JarOutputStream outputStream, String prefix, File jar)
throws IOException {
ArrayList tmp = new ArrayList();
FileInputStream fis = new FileInputStream(jar);
JarInputStream jis = new JarInputStream(fis);
JarEntry entry = jis.getNextJarEntry();
while (entry != null) {
if (entry.isDirectory() == false) {
String entryName = prefix + entry.getName();
tmp.add(entryName);
addJarEntry(outputStream, entryName, jis);
}
entry = jis.getNextJarEntry();
}
jis.close();
String[] names = new String[tmp.size()];
tmp.toArray(names);
return names;
}
/**
* Add a jar entry to the deployment archive
*/
public static void addJarEntry(JarOutputStream outputStream, String entryName,
InputStream inputStream) throws IOException {
outputStream.putNextEntry(new JarEntry(entryName));
copyStream(outputStream, inputStream);
}
/**
* Copies the input stream to the output stream
*/
public static void copyStream(OutputStream outputStream, InputStream inputStream)
throws IOException {
byte[] bytes = new byte[4096];
int read = inputStream.read(bytes, 0, 4096);
while (read > 0) {
outputStream.write(bytes, 0, read);
read = inputStream.read(bytes, 0, 4096);
}
}
}