001/*
002 * Copyright 2006 - 2013
003 *     Stefan Balev     <stefan.balev@graphstream-project.org>
004 *     Julien Baudry    <julien.baudry@graphstream-project.org>
005 *     Antoine Dutot    <antoine.dutot@graphstream-project.org>
006 *     Yoann Pigné      <yoann.pigne@graphstream-project.org>
007 *     Guilhelm Savin   <guilhelm.savin@graphstream-project.org>
008 * 
009 * This file is part of GraphStream <http://graphstream-project.org>.
010 * 
011 * GraphStream is a library whose purpose is to handle static or dynamic
012 * graph, create them from scratch, file or any source and display them.
013 * 
014 * This program is free software distributed under the terms of two licenses, the
015 * CeCILL-C license that fits European law, and the GNU Lesser General Public
016 * License. You can  use, modify and/ or redistribute the software under the terms
017 * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
018 * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
019 * the Free Software Foundation, either version 3 of the License, or (at your
020 * option) any later version.
021 * 
022 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
023 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
024 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
025 * 
026 * You should have received a copy of the GNU Lesser General Public License
027 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
028 * 
029 * The fact that you are presently reading this means that you have had
030 * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
031 */
032package org.graphstream.stream.netstream.packing;
033
034/**
035*
036* Copyright (c) 2010 University of Luxembourg
037*
038* @file Base64Unpacker.java
039* @date Dec 20, 2011
040*
041* @author Yoann Pigné
042*
043*/
044
045import java.io.IOException;
046import java.nio.ByteBuffer;
047
048/**
049 * 
050 */
051public class Base64Unpacker extends NetStreamUnpacker {
052
053        /* (non-Javadoc)
054         * @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#unpackMessage(java.nio.ByteBuffer, int, int)
055         */
056        @Override
057        public ByteBuffer unpackMessage(ByteBuffer buffer, int startIndex,
058                        int endIndex) {
059                try {
060                        byte[] raw = Base64.decode(buffer.array(), startIndex, (endIndex-startIndex), Base64.NO_OPTIONS);
061                        return ByteBuffer.wrap(raw);
062                        
063                } catch (IOException e) {
064                        // TODO Auto-generated catch block
065                        e.printStackTrace();
066                }
067                return null;
068        }
069
070        /* (non-Javadoc)
071         * @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#packMessageSize(java.nio.ByteBuffer)
072         */
073        @Override
074        public int unpackMessageSize(ByteBuffer buffer) {
075                try {
076                        byte[] raw = Base64.decode(buffer.array(),buffer.position(), 8,Base64.NO_OPTIONS);
077                        return ByteBuffer.wrap(raw).getInt();
078                } catch (IOException e) {
079                        // TODO Auto-generated catch block
080                        e.printStackTrace();
081                }
082                return -1;
083        }
084
085        public static void main(String[] args) {
086                Base64Packer packer = new Base64Packer();
087                Base64Unpacker b = new Base64Unpacker();
088
089                ByteBuffer source = ByteBuffer.allocate(9);
090                
091                source.putInt(-1).putFloat(0.1f);
092                source.put((byte)'e');
093                
094                source.rewind();
095                
096                ByteBuffer bb = b.unpackMessage(packer.packMessage( source ) );
097                
098                bb.rewind();
099                
100                System.out.println(bb.getInt());
101                System.out.println(bb.getFloat());
102                System.out.println((char)bb.get());
103        }
104
105        /* (non-Javadoc)
106         * @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#sizeOfInt()
107         */
108        @Override
109        public int sizeOfInt() {
110                return 8;
111        }
112}