package it.unimi.dsi.io;
/*
* DSI utilities
*
* Copyright (C) 2003-2009 Sebastiano Vigna
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 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 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
/** Throw-it-away output stream.
*
* <P>This stream discards whatever is written into it. Its usefulness is in
* previewing the length of some coding by wrapping it in an {@link
* OutputBitStream} (it is a good idea, in this case, {@linkplain
* OutputBitStream#OutputBitStream(java.io.OutputStream,int) to specify a 0-length buffer}).
*
* <P>This class is a singleton. You cannot create a null output stream,
* but you can obtain an instance of this class using {@link #getInstance()}.
*
* @author Sebastiano Vigna
* @since 0.6
*/
public class NullOutputStream extends java.io.OutputStream {
private final static NullOutputStream SINGLETON = new NullOutputStream();
private NullOutputStream() {}
public void write( final int discarded ) {}
/** Returns the only instance of this class. */
public static NullOutputStream getInstance() {
return SINGLETON;
}
}