/**************************************************************************
* Copyright (c) 2001 by Punch Telematix. All rights reserved. *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions *
* are met: *
* 1. Redistributions of source code must retain the above copyright *
* notice, this list of conditions and the following disclaimer. *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* 3. Neither the name of Punch Telematix nor the names of *
* other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission.*
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED *
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. *
* IN NO EVENT SHALL PUNCH TELEMATIX OR OTHER CONTRIBUTORS BE LIABLE *
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF *
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR *
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, *
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE *
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN *
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
**************************************************************************/
/*
** $Id: PipedOutputStream.java,v 1.1.1.1 2004/07/12 14:07:45 cvs Exp $
*/
package java.io;
public class PipedOutputStream extends OutputStream {
/** The PipedInputStream to which we are connected.
*/
PipedInputStream dst;
public PipedOutputStream(PipedInputStream dst) throws IOException {
this.connect(dst);
}
public PipedOutputStream() {
}
public void connect(PipedInputStream dst) throws IOException {
if (this.dst == null && dst.src == null) {
this.dst = dst;
dst.src = this;
}
else {
throw new IOException("allready connected");
}
}
public synchronized void flush() throws IOException {
PipedInputStream dst = this.dst;
if (dst != null) {
synchronized (dst) {
dst.readable = dst.buffer.length - dst.storable;
dst.notifyAll();
}
}
}
public void close() throws IOException {
if(dst != null && !dst.producerclosed){
this.flush();
dst.producerclosed = true;
}
}
/*
** Note that in the following 2 methods, we don't do any checks. The appropriate exceptions
** will be thrown by called methods, so we don't have to check this. E.g. NullPointerException
** will be thrown by the interpreter when 'dst' would be null or the pipe is not yet connected;
** ArrayIndexOutOfBoundsException will be thrown by the arraycopy in dst.receive.
*/
public void write(byte[] buffer, int offset, int count) throws IOException {
if(dst == null){
throw new IOException("unconnected");
}
if(count < 0){
throw new ArrayIndexOutOfBoundsException();
}
this.dst.receive(buffer, offset, count);
}
public void write(int oneByte) throws IOException {
if(dst == null){
throw new IOException("unconnected");
}
this.dst.receive(oneByte);
}
}