AsyncStreamReader.java

package org.molgenis.compute.sysexecutor;

import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;

class AsyncStreamReader extends Thread
{
	private StringBuffer fBuffer = null;
	private InputStream fInputStream = null;
	private String fThreadId = null;
	private boolean fStop = false;
	private ILogDevice fLogDevice = null;

	private String fNewLine = null;

	public AsyncStreamReader(InputStream inputStream, StringBuffer buffer, ILogDevice logDevice, String threadId)
	{
		fInputStream = inputStream;
		fBuffer = buffer;
		fThreadId = threadId;
		fLogDevice = logDevice;

		fNewLine = System.getProperty("line.separator");
	}

	public String getBuffer()
	{
		return fBuffer.toString();
	}

	public void run()
	{
		try
		{
			readCommandOutput();
		}
		catch (Exception ex)
		{
			// ex.printStackTrace(); //DEBUG
		}
	}

	private void readCommandOutput() throws IOException
	{
		BufferedReader bufOut = new BufferedReader(new InputStreamReader(fInputStream));
		String line = null;
		while ((fStop == false) && ((line = bufOut.readLine()) != null))
		{
			fBuffer.append(line + fNewLine);
			printToDisplayDevice(line);
		}
		bufOut.close();
		// printToConsole("END OF: " + fThreadId); //DEBUG
	}

	public void stopReading()
	{
		fStop = true;
	}

	private void printToDisplayDevice(String line)
	{
		if (fLogDevice != null) fLogDevice.log(line);
		else
		{
			// printToConsole(line);//DEBUG
		}
	}

	private synchronized void printToConsole(String line)
	{
		System.out.println(line);
	}
}