com.github.harmanpa.jrecon.utils.Compression.java Source code

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Here is the source code for com.github.harmanpa.jrecon.utils.Compression.java

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/*
 * The MIT License
 *
 * Copyright 2014 CyDesign Limited
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.github.harmanpa.jrecon.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream;

/**
 *
 * @author pete
 */
public class Compression {

    public static byte[] compress(byte[] data) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream(128);
        OutputStream os = new BZip2CompressorOutputStream(baos);
        os.write(data);
        os.close();
        return baos.toByteArray();
    }

    public static byte[] decompress(byte[] data) throws IOException {
        InputStream is = new BZip2CompressorInputStream(new ByteArrayInputStream(data));
        ByteArrayOutputStream baos = new ByteArrayOutputStream(128);
        int b;
        while ((b = is.read()) > -1) {
            baos.write(b);
        }
        is.close();
        return baos.toByteArray();
    }
}