/**
* The utillib library.
* More information is available at http://www.jinchess.com/.
* Copyright (C) 2002 Alexander Maryanovsky.
* All rights reserved.
*
* The utillib 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 of the
* License, or (at your option) any later version.
*
* The utillib 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 utillib library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.io.OutputStream;
import java.io.IOException;
/**
* An OutputStream which relays all data written into it into a
* list of given OutputStreams.
*/
public class MultiOutputStream extends OutputStream{
/**
* An array containing the OutputStreams we're relaying data to.
*/
private final OutputStream [] streams;
/**
* Creates a new MultiOutputStream which relays data to the
* specified two OutputStreams. Any null values
* will be silently ignored.
*/
public MultiOutputStream(OutputStream out1, OutputStream out2){
this(new OutputStream[]{out1, out2});
}
/**
* Creates a new MultiOutputStream which relays data to the
* specified OutputStreams. Any null items in the
* array will be silently ignored.
*/
public MultiOutputStream(OutputStream [] streams){
if (streams == null)
throw new IllegalArgumentException("Specified array may not be null");
int count = 0;
for (int i = 0; i < streams.length; i++)
if (streams[i] != null)
count++;
this.streams = new OutputStream[count];
count = 0;
for (int i = 0; i < streams.length; i++){
OutputStream stream = streams[i];
if (stream != null)
this.streams[count++] = stream;
}
}
/**
* Closes all the underlying OutputStreams.
*/
public void close() throws IOException{
for (int i = 0; i < streams.length; i++)
streams[i].close();
}
/**
* Flushes all the underlying OutputStreams.
*/
public void flush() throws IOException{
for (int i = 0; i < streams.length; i++)
streams[i].flush();
}
/**
* Writes the specified byte into the underlying
* OutputStreams.
*/
public void write(int b) throws IOException{
for (int i = 0; i < streams.length; i++)
streams[i].write(b);
}
/**
* Writes the specified amount of bytes from the given byte array starting
* at the specified offset to the underlying OutputStreams.
*/
public void write(byte [] arr, int offset, int length) throws IOException{
for (int i = 0; i < streams.length; i++)
streams[i].write(arr, offset, length);
}
}