JarClassRepo.java

/**
 * This file is part of Erjang - A JVM-based Erlang VM
 *
 * Copyright (c) 2009 by Trifork
 *
 * 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 erjang.beam;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.jar.JarOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * 
 */
public class JarClassRepo implements ClassRepo {
	
	private JarOutputStream jo;

	public JarClassRepo(File jarFile) throws IOException {
		FileOutputStream fo = new FileOutputStream(jarFile);
		jo = new JarOutputStream(fo);
		jo.setLevel(ZipOutputStream.STORED);
	}
	
	/* (non-Javadoc)
	 * @see erjang.beam.ClassRepo#close()
	 */
	@Override
	public void close() throws IOException {
		jo.close();
	}
	
	/* (non-Javadoc)
	 * @see erjang.beam.ClassRepo#store(java.lang.String, byte[])
	 */
	@Override
	public void store(String internalName, byte[] data) throws IOException {
		String out = internalName + ".class";
		
		//System.out.println("# "+out);
		
		ZipEntry ze = new ZipEntry(out);
		jo.putNextEntry(ze);
		jo.write(data);
		jo.closeEntry();
	}

}