info.monitorenter.io.MultiplexingOutputStream Maven / Gradle / Ivy
/*
* MultiplexingOutputStream.java, an OutputStream that allows to multiplex everything that
* is written to it to all contained output streams (multiplexing).
*
* Copyright 2011 (C) Achim Westermann,
* created on Nov 27, 2011 6:07:13 PM.
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this collection are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the cpDetector code in [sub] packages info.monitorenter and
* cpdetector.
*
* The Initial Developer of the Original Code is
* Achim Westermann .
*
* Portions created by the Initial Developer are Copyright (c) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK *****
*
* If you modify or optimize the code in a useful way please let me know.
* [email protected]
*
*/
package info.monitorenter.io;
import java.io.IOException;
import java.io.OutputStream;
import java.util.LinkedList;
import java.util.List;
/**
* An {@link java.io.OutputStream} that allows to multiplex everything that
* is written to it to all contained output streams (multiplexing).
*
* This is not optimized for performance (by supporting batch writes) but just
* minimal code by now.
*
*
* @author Achim Westermann
* @version $Revision: 1.3 $
*/
public class MultiplexingOutputStream extends OutputStream {
/** The multiplex sources. */
private List m_delegates;
/**
* Constructor ensuring that at least two targets are needed (thus use of this
* class makes sense).
*
*
* @param streamOne
* the 1st stream to delegate writes to.
* @param streamTwo
* the 2nd stream to delegate writes to.
*/
public MultiplexingOutputStream(final OutputStream streamOne, final OutputStream streamTwo) {
this.m_delegates = new LinkedList();
this.m_delegates.add(streamOne);
this.m_delegates.add(streamTwo);
}
/**
* Adds the given output stream to the list of delegates multiplexed to.
*
* @param delegate
* another stream that will receive any write that is done on this
* instance.
*/
public void addOutputStream(final OutputStream delegate) {
this.m_delegates.add(delegate);
}
/**
* Removes the given output stream from the list of delegates multiplexed to.
*
* @param delegate
* a stream that should not receive any write that is done on this
* instance any more.
* @return true if remove was successful, false if remove failed or - more
* likely - the given stream was not on the list of delegates before.
*/
public boolean removeOutputStream(final OutputStream delegate) {
boolean result = this.m_delegates.remove(delegate);
return result;
}
/**
* @see java.io.OutputStream#write(int)
*/
@Override
public void write(int b) throws IOException {
for (OutputStream delegate : this.m_delegates) {
delegate.write(b);
}
}
}