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examples.IOUtil$2 |
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1 | /* |
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2 | * Copyright 2001-2005 The Apache Software Foundation |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package examples; |
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17 | ||
18 | import java.io.IOException; |
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19 | import java.io.InputStream; |
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20 | import java.io.OutputStream; |
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21 | import org.apache.commons.net.io.Util; |
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22 | ||
23 | /*** |
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24 | * This is a utility class providing a reader/writer capability required |
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25 | * by the weatherTelnet, rexec, rshell, and rlogin example programs. |
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26 | * The only point of the class is to hold the static method readWrite |
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27 | * which spawns a reader thread and a writer thread. The reader thread |
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28 | * reads from a local input source (presumably stdin) and writes the |
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29 | * data to a remote output destination. The writer thread reads from |
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30 | * a remote input source and writes to a local output destination. |
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31 | * The threads terminate when the remote input source closes. |
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32 | * <p> |
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33 | ***/ |
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34 | ||
35 | public final class IOUtil |
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36 | { |
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37 | ||
38 | public static final void readWrite(class="keyword">final InputStream remoteInput, |
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39 | final OutputStream remoteOutput, |
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40 | final InputStream localInput, |
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41 | final OutputStream localOutput) |
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42 | { |
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43 | Thread reader, writer; |
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44 | ||
45 | reader = new Thread() |
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46 | { |
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47 | public void run() |
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48 | { |
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49 | int ch; |
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50 | ||
51 | try |
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52 | { |
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53 | while (!interrupted() && (ch = localInput.read()) != -1) |
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54 | { |
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55 | remoteOutput.write(ch); |
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56 | remoteOutput.flush(); |
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57 | } |
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58 | } |
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59 | catch (IOException e) |
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60 | { |
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61 | //e.printStackTrace(); |
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62 | } |
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63 | } |
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64 | } |
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65 | ; |
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66 | ||
67 | ||
68 | writer = new Thread() |
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69 | { |
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70 | 0 | public void run() |
71 | { |
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72 | try |
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73 | { |
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74 | 0 | Util.copyStream(remoteInput, localOutput); |
75 | } |
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76 | 0 | catch (IOException e) |
77 | { |
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78 | 0 | e.printStackTrace(); |
79 | 0 | System.exit(1); |
80 | 0 | } |
81 | 0 | } |
82 | }; |
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83 | ||
84 | ||
85 | writer.setPriority(Thread.currentThread().getPriority() + 1); |
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86 | ||
87 | writer.start(); |
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88 | reader.setDaemon(true); |
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89 | reader.start(); |
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90 | ||
91 | try |
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92 | { |
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93 | writer.join(); |
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94 | reader.interrupt(); |
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95 | } |
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96 | catch (InterruptedException e) |
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97 | { |
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98 | } |
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99 | } |
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100 | ||
101 | } |
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102 |
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