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95 lines
3.1 KiB
95 lines
3.1 KiB
//consoleInterface.java
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//-----------------------
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//part of YaCy
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//(C) by Detlef Reichl; detlef!reichl()gmx!org
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//Pforzheim, Germany, 2008
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//
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//This program is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.tools;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.Semaphore;
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import de.anomic.server.logging.serverLog;
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public class consoleInterface extends Thread
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{
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private final InputStream stream;
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private final List<String> output = new ArrayList<String>();
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private final Semaphore dataIsRead = new Semaphore(1);
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private final serverLog log;
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public consoleInterface(final InputStream stream, final serverLog log)
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{
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this.log = log;
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this.stream = stream;
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// block reading {@see getOutput()}
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try {
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dataIsRead.acquire();
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} catch (final InterruptedException e) {
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// this should never happen because this is a constructor
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e.printStackTrace();
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}
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}
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public void run() {
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// a second run adds data! a output.clear() maybe needed
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try {
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final InputStreamReader input = new InputStreamReader(stream);
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final BufferedReader buffer = new BufferedReader(input);
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String line = null;
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int tries = 0;
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while (tries < 1000) {
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tries++;
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try {
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// may block!
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Thread.sleep(1);
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} catch (final InterruptedException e) {
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// just stop sleeping
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}
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if (buffer.ready())
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break;
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}
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while((line = buffer.readLine()) != null) {
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output.add(line);
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}
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dataIsRead.release();
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} catch(final IOException ix) { log.logWarning("logpoint 6 " + ix.getMessage());}
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}
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/**
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* waits until the stream is read and returns all data
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*
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* @return lines of text in stream
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*/
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public List<String> getOutput(){
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// wait that data is ready
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try {
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dataIsRead.acquire();
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} catch (final InterruptedException e) {
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// after interrupt just return what is available (maybe nothing)
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}
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// is just for checking availability, so release it immediatly
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dataIsRead.release();
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return output;
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}
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} |