tools.xor.util.JsonZip.java Source code

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Here is the source code for tools.xor.util.JsonZip.java

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/**
 * XOR, empowering Model Driven Architecture in J2EE applications
 *
 * Copyright (c) 2012, Dilip Dalton
 *
 * 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 tools.xor.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.io.IOUtils;

public class JsonZip {
    public static byte[] compress(byte[] content) {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try {
            GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream);
            gzipOutputStream.write(content);
            gzipOutputStream.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        System.out.printf("Compression ratio %f\n", (1.0f * content.length / byteArrayOutputStream.size()));
        return byteArrayOutputStream.toByteArray();
    }

    public static byte[] decompress(byte[] contentBytes) {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try {
            IOUtils.copy(new GZIPInputStream(new ByteArrayInputStream(contentBytes)), out);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return out.toByteArray();
    }
}