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/*******************************************************************************
* Copyright (c) 2007, 2011 Wind River Systems, Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.core;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.eclipse.tcf.protocol.IPeer;
import org.eclipse.tcf.protocol.Protocol;
/**
* ChannelPIPE is a IChannel implementation that works on top of named pipes as a transport.
*/
public class ChannelPIPE extends StreamChannel {
private InputStream inp;
private OutputStream out;
private boolean started;
private boolean closed;
public ChannelPIPE(IPeer remote_peer, String name) {
super(remote_peer);
try {
inp = new BufferedInputStream(new FileInputStream(name));
byte[] buf = new byte[0x400];
int rd = inp.read(buf);
if (rd <= 0 || buf[rd - 1] != 0) throw new Exception("Invalid remote peer responce");
out = new BufferedOutputStream(new FileOutputStream(new String(buf, 0, rd - 1, "UTF-8")));
onConnected(null);
}
catch (Exception x) {
onConnected(x);
}
}
private void onConnected(final Throwable x) {
Protocol.invokeLater(new Runnable() {
public void run() {
if (x != null) {
terminate(x);
closed = true;
}
if (closed) {
try {
if (out != null) out.close();
if (inp != null) inp.close();
}
catch (IOException y) {
Protocol.log("Cannot close pipe", y);
}
}
else {
started = true;
start();
}
}
});
}
@Override
protected final int get() throws IOException {
try {
if (closed) return -1;
return inp.read();
}
catch (IOException x) {
if (closed) return -1;
throw x;
}
}
@Override
protected final int get(byte[] buf) throws IOException {
try {
if (closed) return -1;
return inp.read(buf);
}
catch (IOException x) {
if (closed) return -1;
throw x;
}
}
@Override
protected final void put(int b) throws IOException {
assert b >= 0 && b <= 0xff;
if (closed) return;
out.write(b);
}
@Override
protected final void put(byte[] buf) throws IOException {
if (closed) return;
out.write(buf);
}
@Override
protected final void flush() throws IOException {
if (closed) return;
out.flush();
}
@Override
protected void stop() throws IOException {
closed = true;
if (started) {
out.close();
inp.close();
}
}
}
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