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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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