intwriter.java

Java Communicating Agents是一个用于开发网络反应式信息agent的框架

/*
 * $Source: /home/data/cvsroot/src/jacomma/icm/io/imp/IntWriter.java,v $
 * $Revision: 1.6 $
 * $Date: 2000/10/28 20:09:07 $
 *
 * This file is part of the jacomma framework
 * Copyright (c) 2000 	Dimitrios Vyzovitis
 *			mailto:[e-mail]
 *			
 *
 *			
 *			
 *			
 *
 *	This library is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU Library General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	This library 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 Library General Public License for more details.
 *
 *	You should have received a copy of the GNU Library General Public License
 *	along with this library; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, 
 *	Boston, MA  02111-1307  USA
 */

package jacomma.icm.io.imp;

import jacomma.icm.io.EncObject;
import jacomma.icm.io.EncObjectType;
import jacomma.icm.io.EncObjectWriter;


public class IntWriter extends WriterTemplate {

	public IntWriter(){}

	public void writeNext() throws java.io.IOException {
		if ( !done_ ) {
			
			byte[] b = (byte[])obj_.getValue();
			
			if ( b.length == 1 && b[0] == (byte)0x00 ) {
				// stupid icm encoding of zero 
				stream_.write( obj_.getType().getByteCode() );
				stream_.write( 0x00 );
			} else if ( b.length <= 0x0f ) {
				stream_.write( obj_.getType().getByteCode() | b.length );
				stream_.write( b );
			} else {
				byte sig = obj_.getType().getByteCode();
				stream_.write( sig );
				stream_.write( IOUtilities.encodeLength( sig, b.length ) );
				// Note: Length should not need more than 0xf bytes to represent ;-)
				stream_.write( b );
			}

			done_ = true;
		}
	}

	public boolean canHandle( EncObjectType t ) {
		return EncObjectType.Int.equals( t );
	}

}