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      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 
     33 package com.jme3.network.serializing.serializers;
     34 
     35 import com.jme3.network.Message;
     36 import com.jme3.network.message.ZIPCompressedMessage;
     37 import com.jme3.network.serializing.Serializer;
     38 import java.io.ByteArrayInputStream;
     39 import java.io.ByteArrayOutputStream;
     40 import java.io.IOException;
     41 import java.nio.ByteBuffer;
     42 import java.util.zip.ZipEntry;
     43 import java.util.zip.ZipInputStream;
     44 import java.util.zip.ZipOutputStream;
     45 
     46 /**
     47  * Serializes ZIP messages.
     48  *
     49  * @author Lars Wesselius
     50  */
     51 public class ZIPSerializer extends Serializer {
     52 
     53     @SuppressWarnings("unchecked")
     54     public <T> T readObject(ByteBuffer data, Class<T> c) throws IOException {
     55         try
     56         {
     57             ZIPCompressedMessage result = new ZIPCompressedMessage();
     58 
     59             byte[] byteArray = new byte[data.remaining()];
     60 
     61             data.get(byteArray);
     62 
     63             ZipInputStream in = new ZipInputStream(new ByteArrayInputStream(byteArray));
     64             in.getNextEntry();
     65             ByteArrayOutputStream out = new ByteArrayOutputStream();
     66 
     67             byte[] tmp = new byte[9012];
     68             int read;
     69 
     70             while (in.available() > 0 && ((read = in.read(tmp)) > 0)) {
     71                 out.write(tmp, 0, read);
     72             }
     73 
     74             in.closeEntry();
     75             out.flush();
     76             in.close();
     77 
     78             result.setMessage((Message)Serializer.readClassAndObject(ByteBuffer.wrap(out.toByteArray())));
     79             return (T)result;
     80         }
     81         catch (Exception e) {
     82             e.printStackTrace();
     83             throw new IOException(e.toString());
     84         }
     85     }
     86 
     87     public void writeObject(ByteBuffer buffer, Object object) throws IOException {
     88         if (!(object instanceof ZIPCompressedMessage)) return;
     89 
     90         ZIPCompressedMessage zipMessage = (ZIPCompressedMessage)object;
     91         Message message = zipMessage.getMessage();
     92         ByteBuffer tempBuffer = ByteBuffer.allocate(512000);
     93         Serializer.writeClassAndObject(tempBuffer, message);
     94 
     95         ByteArrayOutputStream byteArrayOutput = new ByteArrayOutputStream();
     96         ZipOutputStream zipOutput = new ZipOutputStream(byteArrayOutput);
     97         zipOutput.setLevel(zipMessage.getLevel());
     98 
     99         ZipEntry zipEntry = new ZipEntry("zip");
    100 
    101         zipOutput.putNextEntry(zipEntry);
    102         zipOutput.write(tempBuffer.array());
    103         zipOutput.flush();
    104         zipOutput.closeEntry();
    105         zipOutput.close();
    106 
    107         buffer.put(byteArrayOutput.toByteArray());
    108     }
    109 }
    110