com.izforge.izpack.compiler.container.provider.JarOutputStreamProvider 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 com.izforge.izpack.compiler.data.CompilerData;
import org.picocontainer.injectors.Provider;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.jar.JarOutputStream;
import java.util.zip.Deflater;
/**
* Provides the Jar output stream for the final installer jar
*
* @author Anthonin Bonnefoy
*/
public class JarOutputStreamProvider implements Provider
{
public JarOutputStream provide(CompilerData compilerData)
{
try
{
final Path file = Paths.get(compilerData.getOutput());
if (compilerData.isMkdirs())
{
Files.createDirectories(file.getParent());
}
JarOutputStream jarOutputStream = new JarOutputStream(new BufferedOutputStream(Files.newOutputStream(file)));
int level = compilerData.getComprLevel();
if (level >= 0 && level < 10)
{
jarOutputStream.setLevel(level);
}
else
{
jarOutputStream.setLevel(Deflater.BEST_COMPRESSION);
}
return jarOutputStream;
}
catch (IOException e)
{
throw new IllegalStateException(e);
}
}
}