| /* |
| * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package vm.share.process; |
| |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| public class StreamReader extends Thread { |
| private InputStream in; |
| private List<StreamListener> listeners; |
| private volatile boolean terminate = false; |
| private static final long CLEANUP_TIMEOUT = 60000; |
| |
| public StreamReader(String desc) { |
| super("Stream Reader: " + desc); |
| setDaemon(true); |
| } |
| |
| public StreamReader(String desc, InputStream in) { |
| this(desc); |
| setStream(in); |
| } |
| |
| public void setDescription(String desc) { |
| setName("Stream Reader: " + desc); |
| } |
| |
| public void setStream(InputStream in) { |
| this.in = in; |
| } |
| |
| public synchronized void addListener(StreamListener listener) { |
| if (listeners == null) |
| listeners = new ArrayList<StreamListener>(); |
| listeners.add(listener); |
| } |
| |
| public synchronized void removeListener(StreamListener listener) { |
| if (listeners != null) { |
| while (listeners.remove(listener)) |
| ; |
| } |
| } |
| |
| public void run() { |
| onStart(); |
| BufferedReader rd; |
| try { |
| rd = new BufferedReader(new InputStreamReader(in)); |
| String line; |
| while (!terminate) { |
| line = rd.readLine(); |
| if (line == null) |
| break; |
| onRead(line); |
| while (rd.ready()) { |
| line = rd.readLine(); |
| if (line == null) |
| break; |
| onRead(line); |
| } |
| if (line == null) |
| break; |
| } |
| cleanup(); |
| onFinish(); |
| } catch (IOException e) { |
| if (!terminate) |
| onException(e); |
| else |
| onFinish(); |
| } |
| } |
| |
| protected void onStart() { |
| if (listeners != null) { |
| for (StreamListener l : listeners) |
| l.onStart(); |
| } |
| } |
| |
| protected void onRead(String line) { |
| //System.out.println("Read: " + line); |
| if (listeners != null) { |
| for (StreamListener l : listeners) |
| l.onRead(line); |
| } |
| } |
| |
| protected void onFinish() { |
| if (listeners != null) { |
| for (StreamListener l : listeners) |
| l.onFinish(); |
| } |
| } |
| |
| protected void onException(Throwable e) { |
| if (listeners != null) { |
| for (StreamListener l : listeners) |
| l.onException(e); |
| } |
| } |
| |
| private void cleanup() { |
| try { |
| in.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| public void kill() { |
| terminate = true; |
| try { |
| this.join(CLEANUP_TIMEOUT); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| this.interrupt(); |
| try { |
| this.join(CLEANUP_TIMEOUT); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |