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/*******************************************************************************
* Copyright (c) 2013 Intel Corporation.
* 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:
* Ioana Grigoropol(Intel) - initial API and implementation
*******************************************************************************/
package org.yocto.remote.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.concurrent.locks.Lock;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.rse.internal.services.local.shells.LocalHostShell;
import org.eclipse.rse.internal.services.shells.TerminalServiceHostShell;
import org.eclipse.rse.services.shells.HostShellProcessAdapter;
import org.eclipse.rse.services.shells.IHostShell;
public abstract class OutputProcessor{
private static final int ERROR_BUFFER = 1;
private static final int OUTPUT_BUFFER = 2;
protected String task;
protected ProcessStreamBuffer processBuffer;
protected IHostShell hostShell;
protected CommandResponseHandler cmdHandler;
protected IProgressMonitor monitor;
public OutputProcessor(IProgressMonitor monitor, IHostShell hostShell, CommandResponseHandler cmdHandler, String task){
this.monitor = monitor;
this.hostShell = hostShell;
this.processBuffer = new ProcessStreamBuffer(hostShell instanceof TerminalServiceHostShell);
this.cmdHandler = cmdHandler;
this.task = task;
}
public ProcessStreamBuffer processOutput() throws Exception{
if (hostShell == null)
throw new Exception("An error has occured while trying to run remote command!");
monitor.beginTask(this.task, RemoteHelper.TOTALWORKLOAD);
Lock lock = null;
if (hostShell instanceof LocalHostShell) {
lock = ((LocalHostShell)hostShell).getLock();
lock.lock();
}
BufferedReader inbr = null;
BufferedReader errbr = null;
if (hostShell instanceof LocalHostShell) {
inbr = ((LocalHostShell)hostShell).getReader(false);
errbr = ((LocalHostShell)hostShell).getReader(true);
} else {
Process p = new HostShellProcessAdapter(hostShell);
inbr = new BufferedReader(new InputStreamReader(p.getInputStream()));
errbr = new BufferedReader(new InputStreamReader(p.getErrorStream()));
}
boolean cancel = false;
while (!cancel) {
if(monitor.isCanceled()) {
cancel = true;
if (lock != null)
lock.unlock();
throw new InterruptedException("User Cancelled");
}
processBuffer(errbr, ERROR_BUFFER);
processBuffer(inbr, OUTPUT_BUFFER);
cancel = true;
}
if (lock != null)
lock.unlock();
return processBuffer;
}
protected abstract boolean isErrChStop(char ch);
protected abstract boolean isOutChStop(char ch);
protected boolean isChStop(char ch, int type){
if (type == ERROR_BUFFER)
return isErrChStop(ch);
else if(type == OUTPUT_BUFFER)
return isOutChStop(ch);
return false;
}
protected abstract void processOutputBufferLine(char ch, String str);
protected abstract void processErrorBufferLine(char ch, String str);
protected void processBufferLine(String str, char ch, int type){
if (type == ERROR_BUFFER)
processErrorBufferLine(ch, str);
else if(type == OUTPUT_BUFFER)
processOutputBufferLine(ch, str);
}
protected void processBuffer(BufferedReader br, int type) throws IOException{
StringBuffer buffer = new StringBuffer();
int c;
if (br != null)
while ((c = br.read()) != -1) {
char ch = (char) c;
buffer.append(ch);
if (isChStop(ch, type)){
String str = buffer.toString();
processBufferLine(str, ch, type);
System.out.println(str);
if (str.trim().equals(RemoteHelper.TERMINATOR)) {
break;
}
cmdHandler.response(str, false);
buffer.delete(0, buffer.length());
}
}
}
}
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