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org.apache.commons.jelly.tags.soap.StringInputStream |
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1 | /* |
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2 | * Copyright 2002,2004 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 | ||
17 | package org.apache.commons.jelly.tags.soap; |
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18 | ||
19 | import java.io.IOException; |
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20 | import java.io.InputStream; |
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21 | import java.io.StringReader; |
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22 | ||
23 | /** |
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24 | * Wraps a String as an InputStream. Note that data will be lost for |
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25 | * characters not in ISO Latin 1, as a simple char->byte mapping is assumed. |
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26 | * |
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27 | * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a> |
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28 | */ |
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29 | public class StringInputStream |
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30 | extends InputStream |
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31 | { |
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32 | /** Source string, stored as a StringReader */ |
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33 | private StringReader in; |
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34 | ||
35 | /** |
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36 | * Composes a stream from a String |
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37 | * |
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38 | * @param source The string to read from. Must not be <code>null</code>. |
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39 | */ |
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40 | public StringInputStream( String source ) |
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41 | 0 | { |
42 | 0 | in = new StringReader( source ); |
43 | 0 | } |
44 | ||
45 | /** |
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46 | * Reads from the Stringreader, returning the same value. Note that |
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47 | * data will be lost for characters not in ISO Latin 1. Clients |
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48 | * assuming a return value in the range -1 to 255 may even fail on |
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49 | * such input. |
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50 | * |
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51 | * @return the value of the next character in the StringReader |
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52 | * |
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53 | * @exception IOException if the original StringReader fails to be read |
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54 | */ |
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55 | public int read() throws IOException |
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56 | { |
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57 | 0 | return in.read(); |
58 | } |
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59 | ||
60 | /** |
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61 | * Closes the Stringreader. |
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62 | * |
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63 | * @exception IOException if the original StringReader fails to be closed |
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64 | */ |
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65 | public void close() throws IOException |
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66 | { |
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67 | 0 | in.close(); |
68 | 0 | } |
69 | ||
70 | /** |
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71 | * Marks the read limit of the StringReader. |
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72 | * |
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73 | * @param limit the maximum limit of bytes that can be read before the |
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74 | * mark position becomes invalid |
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75 | */ |
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76 | public synchronized void mark( final int limit ) |
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77 | { |
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78 | try |
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79 | { |
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80 | 0 | in.mark( limit ); |
81 | 0 | } |
82 | catch ( IOException ioe ) |
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83 | { |
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84 | 0 | throw new RuntimeException( ioe.getMessage() ); |
85 | } |
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86 | 0 | } |
87 | ||
88 | /** |
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89 | * Resets the StringReader. |
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90 | * |
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91 | * @exception IOException if the StringReader fails to be reset |
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92 | */ |
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93 | public synchronized void reset() throws IOException |
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94 | { |
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95 | 0 | in.reset(); |
96 | 0 | } |
97 | ||
98 | /** |
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99 | * @see InputStream#markSupported |
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100 | */ |
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101 | public boolean markSupported() |
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102 | { |
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103 | 0 | return in.markSupported(); |
104 | } |
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105 | } |
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106 |
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