com.izforge.izpack.compiler.container.provider.CompressedOutputStreamProvider Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* 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 com.izforge.izpack.compiler.container.provider;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.compress.compressors.CompressorException;
import org.apache.commons.compress.compressors.CompressorStreamFactory;
import org.apache.tools.zip.ZipEntry;
import org.picocontainer.injectors.Provider;
import com.izforge.izpack.compiler.data.CompilerData;
import com.izforge.izpack.compiler.stream.JarOutputStream;
/**
* Created by IntelliJ IDEA.
*
* @author Anthonin Bonnefoy
*/
public class CompressedOutputStreamProvider implements Provider
{
public OutputStream provide(CompilerData compilerData, JarOutputStream jarOutputStream) throws CompressorException, IOException
{
OutputStream outputStream = jarOutputStream;
String comprFormat = compilerData.getComprFormat();
if (comprFormat.equals("bzip2"))
{
ZipEntry entry = new ZipEntry("bzip2");
entry.setMethod(ZipEntry.STORED);
entry.setComment("bzip2");
// We must set the entry before we get the compressed stream
// because some writes initialize data (e.g. bzip2).
jarOutputStream.putNextEntry(entry);
jarOutputStream.flush(); // flush before we start counting
outputStream = new CompressorStreamFactory().createCompressorOutputStream("bzip2", jarOutputStream);
jarOutputStream.closeEntry();
}
return outputStream;
}
}