src/main/java/org/apache/commons/imaging/common/ZLibUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.commons.imaging.common;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;

public class ZLibUtils extends BinaryFileFunctions
{
    public final byte[] inflate(byte bytes[]) throws IOException
    // slow, probably.
    {
        ByteArrayInputStream in = new ByteArrayInputStream(bytes);
        InflaterInputStream zIn = new InflaterInputStream(in);
        return getStreamBytes(zIn);
    }

    public final byte[] deflate(byte bytes[]) throws IOException
    {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DeflaterOutputStream dos = new DeflaterOutputStream(baos);
        dos.write(bytes);
        dos.close();
        return baos.toByteArray();
    }

}