package com.epam.wilma.test.server.compress.gzip;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma 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 3 of the License, or
(at your option) any later version.
Wilma 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 Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPOutputStream;
import org.apache.commons.io.IOUtils;
import com.epam.wilma.test.server.SystemException;
/**
* Responsible for compressing an input stream into gzip.
* @author Tamas_Bihari
*
*/
public class GzipCompressor {
/**
* Compresses an {@link InputStream} object into gzip.
* @param source the input stream that will be compressed.
* @return a {@link ByteArrayOutputStream} containing gzipped byte array.
*/
public ByteArrayOutputStream compress(final InputStream source) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
GZIPOutputStream gout = new GZIPOutputStream(baos);
//... Code to read from your original uncompressed data and write to gout.
IOUtils.copy(source, gout);
gout.finish();
gout.close();
} catch (IOException e) {
throw new SystemException("error", e);
}
return baos;
}
}