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/*
* Copyright (C) 2008, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "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 THE COPYRIGHT OWNER OR
* 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.
*/
package org.eclipse.jgit.transport;
import java.io.IOException;
import java.io.OutputStream;
/**
* Multiplexes data and progress messages
* <p>
* To correctly use this class you must wrap it in a BufferedOutputStream with a
* buffer size no larger than either {@link #SMALL_BUF} or {@link #MAX_BUF},
* minus {@link #HDR_SIZE}.
*/
class SideBandOutputStream extends OutputStream {
static final int CH_DATA = SideBandInputStream.CH_DATA;
static final int CH_PROGRESS = SideBandInputStream.CH_PROGRESS;
static final int CH_ERROR = SideBandInputStream.CH_ERROR;
static final int SMALL_BUF = 1000;
static final int MAX_BUF = 65520;
static final int HDR_SIZE = 5;
private final int channel;
private final PacketLineOut pckOut;
private byte[] singleByteBuffer;
SideBandOutputStream(final int chan, final PacketLineOut out) {
channel = chan;
pckOut = out;
}
@Override
public void flush() throws IOException {
if (channel != CH_DATA)
pckOut.flush();
}
@Override
public void write(final byte[] b, final int off, final int len)
throws IOException {
pckOut.writeChannelPacket(channel, b, off, len);
}
@Override
public void write(final int b) throws IOException {
if (singleByteBuffer == null)
singleByteBuffer = new byte[1];
singleByteBuffer[0] = (byte) b;
write(singleByteBuffer);
}
}
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