/*
* Aleph Toolkit
*
* Copyright 1999, Brown University, Providence, RI.
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose other than its incorporation into a
* commercial product is hereby granted without fee, provided that the
* above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Brown University not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission.
*
* BROWN UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY
* PARTICULAR PURPOSE. IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE FOR
* ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package aleph.comm;
import aleph.Aleph;
import aleph.comm.message.EOF;
import aleph.comm.message.Stdout;
import java.io.IOException;
public class OutputStream extends java.io.OutputStream {
private static CommunicationManager cManager =
CommunicationManager.getManager();
private static Address address = cManager.getConsoleAddress();
private StringBuffer buffer = null; // accumulate text here
private boolean open = true; // status
private static final boolean DEBUG = false;
public OutputStream () {
super();
}
public synchronized void write (int b) throws IOException {
if (DEBUG)
Aleph.debug("OutputStream.write(byte)");
if (buffer == null){
buffer = new StringBuffer();
}
buffer.append(b);
}
public synchronized void write (byte[] b, int off, int len) throws IOException {
if (DEBUG)
Aleph.debug("OutputStream.write("
+ new String(b, off, len) + ")");
if (buffer == null){
buffer = new StringBuffer();
}
buffer.append(new String(b, off, len));
}
public synchronized void flush () throws IOException {
if (open) {
if (DEBUG)
Aleph.debug("OutputStream.flush(" +
((buffer == null) ? "null" : buffer.toString()) +
")");
try {
if (buffer != null) // don't bother without data
cManager.send(address,
new Stdout(buffer.toString()));
cManager.flush(address);
buffer = null;
} catch (Exception e) {}
}
}
public synchronized void close () throws IOException {
if (open) {
cManager.send(address, new EOF());
flush();
open = false;
}
}
}