/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2008 Sun Microsystems, Inc.
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* Portions Copyright 2015-2016 ForgeRock AS.
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*/
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package org.opends.guitools.controlpanel.util;
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.PrintStream;
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/** Class used to write the output and error of a given process in a printstream. */
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public class ProcessReader
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{
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private BufferedReader reader;
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private Thread readerThread;
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private Throwable lastException;
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private boolean interrupt;
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private boolean done;
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/**
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* The constructor.
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* @param process process whose output/error we want to write to the print
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* stream.
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* @param printStream the print stream.
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* @param isError whether we must write the error (or the output) must be
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* written to the stream.
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*/
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public ProcessReader(Process process, final PrintStream printStream,
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boolean isError)
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{
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InputStream is;
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if (isError)
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{
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is = process.getErrorStream();
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}
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else
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{
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is = process.getInputStream();
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}
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reader = new BufferedReader(new InputStreamReader(is));
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readerThread = new Thread(new Runnable()
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{
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@Override
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public void run()
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{
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String line;
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try
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{
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while (!interrupt && (null != (line = reader.readLine())))
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{
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printStream.println(line);
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}
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}
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catch (Throwable t)
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{
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lastException = t;
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}
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done = true;
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}
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});
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}
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/** Starts reading the output (or error) of the process. */
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public void startReading()
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{
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readerThread.start();
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}
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/**
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* Interrupts the reading of the output (or error) of the process. The method
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* does not return until the reading is over.
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*/
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public void interrupt()
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{
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interrupt = true;
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while (!done)
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{
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try
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{
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readerThread.interrupt();
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}
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catch (Throwable t)
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{
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}
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}
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}
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/**
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* Returns the last exception that occurred reading the output (or the error)
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* of the process.
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* @return the last exception that occurred reading the output (or the error)
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* of the process.
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*/
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public Throwable getLastException()
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{
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return lastException;
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}
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}
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