AsyncStreamReader.java

package org.molgenis.compute.test.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);
    }
}