1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33package com.jme3.network.serializing.serializers;
34
35import com.jme3.network.Message;
36import com.jme3.network.message.GZIPCompressedMessage;
37import com.jme3.network.serializing.Serializer;
38import java.io.ByteArrayInputStream;
39import java.io.ByteArrayOutputStream;
40import java.io.IOException;
41import java.nio.ByteBuffer;
42import java.util.zip.GZIPInputStream;
43import java.util.zip.GZIPOutputStream;
44
45/**
46 * Serializes GZIP messages.
47 *
48 * @author Lars Wesselius
49 */
50public class GZIPSerializer extends Serializer {
51
52    @SuppressWarnings("unchecked")
53    public <T> T readObject(ByteBuffer data, Class<T> c) throws IOException {
54        try
55        {
56            GZIPCompressedMessage result = new GZIPCompressedMessage();
57
58            byte[] byteArray = new byte[data.remaining()];
59
60            data.get(byteArray);
61
62            GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(byteArray));
63            ByteArrayOutputStream out = new ByteArrayOutputStream();
64
65            byte[] tmp = new byte[9012];
66            int read;
67
68            while (in.available() > 0 && ((read = in.read(tmp)) > 0)) {
69                out.write(tmp, 0, read);
70            }
71
72            result.setMessage((Message)Serializer.readClassAndObject(ByteBuffer.wrap(out.toByteArray())));
73            return (T)result;
74        }
75        catch (Exception e) {
76            e.printStackTrace();
77            throw new IOException(e.toString());
78        }
79    }
80
81    public void writeObject(ByteBuffer buffer, Object object) throws IOException {
82        if (!(object instanceof GZIPCompressedMessage)) return;
83        Message message = ((GZIPCompressedMessage)object).getMessage();
84
85        ByteBuffer tempBuffer = ByteBuffer.allocate(512000);
86        Serializer.writeClassAndObject(tempBuffer, message);
87
88        ByteArrayOutputStream byteArrayOutput = new ByteArrayOutputStream();
89        GZIPOutputStream gzipOutput = new GZIPOutputStream(byteArrayOutput);
90
91        gzipOutput.write(tempBuffer.array());
92        gzipOutput.flush();
93        gzipOutput.finish();
94        gzipOutput.close();
95
96        buffer.put(byteArrayOutput.toByteArray());
97    }
98}
99