ZipStoreOutputStream.java

/*******************************************************************************
 * Copyright (c) MOBAC developers
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package mobac.utilities.stream;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipStoreOutputStream extends ZipOutputStream {

	private CRC32 crc = new CRC32();

	public ZipStoreOutputStream(OutputStream out) {
		super(out);
	}

	public ZipStoreOutputStream(File f) throws FileNotFoundException {
		super(new FileOutputStream(f));
	}

	/**
	 * 
	 * Warning this method is not thread safe!
	 * 
	 * @param name file name including path in the zip
	 * @param data
	 * @throws IOException
	 */
	public void writeStoredEntry(String name, byte[] data) throws IOException {
		ZipEntry ze = new ZipEntry(name);
		ze.setMethod(ZipEntry.STORED);
		ze.setCompressedSize(data.length);
		ze.setSize(data.length);
		crc.reset();
		crc.update(data);
		ze.setCrc(crc.getValue());
		putNextEntry(ze);
		write(data);
		closeEntry();
	}
}