/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.shrinkwrap.impl.base.io.tar;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.jboss.shrinkwrap.impl.base.io.tar.bzip.BZip2CompressorOutputStream;
// we extend TarOutputStream to have the same type,
// BUT, we don't use ANY methods. It's all about
// typing.
/**
* Outputs tar.bz2 files. Added functionality that it doesn't need to know the size of an entry. If an entry has zero
* size when it is put in the Tar, then it buffers it until it's closed and it knows the size.
*
* @author "Bay" <bayard@generationjava.com>
* @author <a href="mailto:ts@bee.kz">Tair Sabirgaliev</a>
*/
public class TarBzOutputStream extends TarOutputStreamImpl {
private TarOutputStreamImpl tos = null;
private BZip2CompressorOutputStream bzip = null;
private ByteArrayOutputStream bos = null;
private TarEntry currentEntry = null;
public TarBzOutputStream(OutputStream out) throws IOException {
super(null);
this.bzip = new BZip2CompressorOutputStream(out);
this.tos = new TarOutputStreamImpl(this.bzip);
this.bos = new ByteArrayOutputStream();
}
// proxy all methods, but buffer if unknown size
public void setDebug(boolean b) {
this.tos.setDebug(b);
}
public void setBufferDebug(boolean b) {
this.tos.setBufferDebug(b);
}
public void finish() throws IOException {
if (this.currentEntry != null) {
closeEntry();
}
this.tos.finish();
}
public void close() throws IOException {
this.flush();
this.tos.close();
this.bzip.finish();
}
public int getRecordSize() {
return this.tos.getRecordSize();
}
public void putNextEntry(TarEntry entry) throws IOException {
if (entry.getSize() != 0) {
this.tos.putNextEntry(entry);
} else {
this.currentEntry = entry;
}
}
public void closeEntry() throws IOException {
if (this.currentEntry == null) {
this.tos.closeEntry();
} else {
this.currentEntry.setSize(bos.size());
this.tos.putNextEntry(this.currentEntry);
this.bos.writeTo(this.tos);
this.tos.closeEntry();
this.currentEntry = null;
this.bos = new ByteArrayOutputStream();
}
}
public void write(int b) throws IOException {
if (this.currentEntry == null) {
this.tos.write(b);
} else {
this.bos.write(b);
}
}
public void write(byte[] b) throws IOException {
if (this.currentEntry == null) {
this.tos.write(b);
} else {
this.bos.write(b);
}
}
public void write(byte[] b, int start, int length) throws IOException {
if (this.currentEntry == null) {
this.tos.write(b, start, length);
} else {
this.bos.write(b, start, length);
}
}
/**
* {@inheritDoc}
*
* @see java.io.FilterOutputStream#flush()
*/
@Override
public void flush() throws IOException {
this.bos.flush();
}
}