Base64Unpacker.java
/*
* Copyright 2006 - 2013
* Stefan Balev <stefan.balev@graphstream-project.org>
* Julien Baudry <julien.baudry@graphstream-project.org>
* Antoine Dutot <antoine.dutot@graphstream-project.org>
* Yoann Pigné <yoann.pigne@graphstream-project.org>
* Guilhelm Savin <guilhelm.savin@graphstream-project.org>
*
* This file is part of GraphStream <http://graphstream-project.org>.
*
* GraphStream is a library whose purpose is to handle static or dynamic
* graph, create them from scratch, file or any source and display them.
*
* This program is free software distributed under the terms of two licenses, the
* CeCILL-C license that fits European law, and the GNU Lesser General Public
* License. You can use, modify and/ or redistribute the software under the terms
* of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
* URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
* the Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
*/
package org.graphstream.stream.netstream.packing;
/**
*
* Copyright (c) 2010 University of Luxembourg
*
* @file Base64Unpacker.java
* @date Dec 20, 2011
*
* @author Yoann Pigné
*
*/
import java.io.IOException;
import java.nio.ByteBuffer;
/**
*
*/
public class Base64Unpacker extends NetStreamUnpacker {
/* (non-Javadoc)
* @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#unpackMessage(java.nio.ByteBuffer, int, int)
*/
@Override
public ByteBuffer unpackMessage(ByteBuffer buffer, int startIndex,
int endIndex) {
try {
byte[] raw = Base64.decode(buffer.array(), startIndex, (endIndex-startIndex), Base64.NO_OPTIONS);
return ByteBuffer.wrap(raw);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
/* (non-Javadoc)
* @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#packMessageSize(java.nio.ByteBuffer)
*/
@Override
public int unpackMessageSize(ByteBuffer buffer) {
try {
byte[] raw = Base64.decode(buffer.array(),buffer.position(), 8,Base64.NO_OPTIONS);
return ByteBuffer.wrap(raw).getInt();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return -1;
}
public static void main(String[] args) {
Base64Packer packer = new Base64Packer();
Base64Unpacker b = new Base64Unpacker();
ByteBuffer source = ByteBuffer.allocate(9);
source.putInt(-1).putFloat(0.1f);
source.put((byte)'e');
source.rewind();
ByteBuffer bb = b.unpackMessage(packer.packMessage( source ) );
bb.rewind();
System.out.println(bb.getInt());
System.out.println(bb.getFloat());
System.out.println((char)bb.get());
}
/* (non-Javadoc)
* @see org.graphstream.stream.netstream.packing.NetStreamUnpacker#sizeOfInt()
*/
@Override
public int sizeOfInt() {
return 8;
}
}