/*
 * Created on Feb 8, 2007
 * Created by Paul Gardner
 * Copyright (C) 2007 Aelitis, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 * AELITIS, SAS au capital de 63.529,40 euros
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 *
 */


package com.aelitis.azureus.core.util;

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

public class 
ByteCountedInputStream
	extends FilterInputStream
{
	private long	position;
	private long	mark;
	
	public
	ByteCountedInputStream(
		InputStream		is )
	{
		super( is );
	}
	
	public int 
	read() 
	
		throws IOException 
	{
		int	read = in.read();
		
		position += read;
		
		return( read );
	}
	
	public int 
	read(byte b[]) 
	
		throws IOException 
	{
	   	int	read = read(b, 0, b.length);
	   	
	   	position += read;
	   	
	   	return( read );
	}
	
	public int 
	read(byte b[], int off, int len) 
	
		throws IOException 
	{
		int	read = in.read(b, off, len);
		
		position += read;
		
		return( read );
	}
		    	   
	public long 
	skip(long n) 
	
		throws IOException 
	{
		long	skipped = in.skip(n);
		
		position += skipped;
		
		return( skipped );
	}	    			
		    			
	public synchronized void 
	mark(int readlimit) 
	{
		in.mark(readlimit);	
		
		mark	= position;
	}

	public synchronized void 
	reset() 

		throws IOException 
	{
		in.reset();	
		
		position = mark;
	}
	 
	public long
	getPosition()
	{
		return( position );
	}
}
