1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *
15 *  See the License for the specific language governing permissions and
16 *  limitations under the License.
17 */
18
19/**
20 * @author Vitaly A. Provodin
21 */
22
23/**
24 * Created on 29.01.2005
25 */
26package org.apache.harmony.jpda.tests.framework;
27
28import java.io.InputStreamReader;
29import java.io.BufferedReader;
30import java.io.InputStream;
31import java.io.IOException;
32
33/**
34 * <p>This class provides redirection of debuggee output and error streams to logWriter.
35 */
36public class StreamRedirector extends Thread {
37
38    String name;
39    LogWriter logWriter;
40    BufferedReader br;
41    boolean doExit;
42
43    /**
44     * Creates new redirector for the specified stream.
45     *
46     * @param is stream to be redirected
47     * @param logWriter logWriter to redirect stream to
48     * @param name stream name used as prefix for redirected output
49     */
50    public StreamRedirector(InputStream is, LogWriter logWriter, String name) {
51        super("Redirector for " + name);
52        this.name = name;
53        this.logWriter = logWriter;
54        InputStreamReader isr = new InputStreamReader(is);
55        br = new BufferedReader(isr, 1024);
56        doExit = false;
57    }
58
59    /**
60     * Reads all lines from stream and puts them to logWriter.
61     */
62    public void run() {
63        logWriter.println("Redirector started: " + name);
64        try {
65            String line = "";
66            while (!doExit) {
67                try {
68                    line = br.readLine();
69                    if (line == null)
70                        break;
71
72                    logWriter.println(name + "> " + line);
73                } catch (IllegalStateException e) {
74                     //logWriter.printError("Illegal state exception! " + e);
75                    //ignore
76                }
77
78            }
79            logWriter.println("Redirector completed: " + name);
80        } catch (IOException e) {
81            logWriter.printError(e);
82        }
83    }
84
85    /**
86     * Notifies redirector to stop stream redirection.
87     */
88    public void exit() {
89        doExit = true;
90    }
91}
92