/**

  * Distribution License:

  * JSword is free software; you can redistribute it and/or modify it under

  * the terms of the GNU Lesser General Public License, version 2.1 or later

  * as published by the Free Software Foundation. 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 Lesser General Public License for more details.

  *

  * The License is available on the internet at:

  *      http://www.gnu.org/copyleft/lgpl.html

  * or by writing to:

  *      Free Software Foundation, Inc.

  *      59 Temple Place - Suite 330

  *      Boston, MA 02111-1307, USA

  *

  * © CrossWire Bible Society, 2014 - 2016

  *

  */

 package org.crosswire.common.compress;

 import java.io.BufferedInputStream;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import org.apache.commons.compress.compressors.CompressorInputStream;

 import org.apache.commons.compress.compressors.CompressorOutputStream;

 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;

 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream;

 import org.apache.commons.compress.utils.IOUtils;

 /**

  * BZip2 manages the compression and uncompression of BZip2 data.

  * 

  * @see gnu.lgpl.License The GNU Lesser General Public License for details.

  * @author DM Smith

  */

 public class BZip2 extends AbstractCompressor {

     /**

      * Create a BZip2 that is capable of transforming the input.

      * 

      * @param input

      *            to compress or uncompress.

      */

     public BZip2(InputStream input) {

         super(input);

     }

     /* (non-Javadoc)

      * @see org.crosswire.common.compress.Compressor#compress()

      */

     public ByteArrayOutputStream compress() throws IOException {

         BufferedInputStream in = new BufferedInputStream(input);

         ByteArrayOutputStream bos = new ByteArrayOutputStream();

         CompressorOutputStream out = new BZip2CompressorOutputStream(bos);

         IOUtils.copy(in, out);

         in.close();

         out.flush();

         out.close();

         return bos;

     }

     /* (non-Javadoc)

      * @see org.crosswire.common.compress.Compressor#uncompress()

      */

     public ByteArrayOutputStream uncompress() throws IOException {

         return uncompress(BUF_SIZE);

     }

     /* (non-Javadoc)

      * @see org.crosswire.common.compress.Compressor#uncompress(int)

      */

     public ByteArrayOutputStream uncompress(int expectedLength) throws IOException {

         ByteArrayOutputStream out = new ByteArrayOutputStream(expectedLength);

         CompressorInputStream in = new BZip2CompressorInputStream(input);

         IOUtils.copy(in, out);

         in.close();

         out.flush();

         out.close();

         return out;

     }

 }