DebugInputStream


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2    * Copyright (c) 2000-2004 The Apache Software Foundation.             *
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5    * Licensed under the Apache License, Version 2.0 (the "License"); you *
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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     *
14   * implied.  See the License for the specific language governing       *
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17  
18  package org.apache.james.util;
19  
20  import java.io.IOException  ;
21  import java.io.InputStream  ;
22  
23  /**
24   * Reads data off a stream, printing every byte read to System.err.
25   */
26  public class DebugInputStream extends InputStream   {
27  
28      /**
29       * The input stream being wrapped
30       */
31      InputStream   in = null;
32  
33      /**
34       * Constructor that takes an InputStream to be wrapped.
35       *
36       * @param in the InputStream to be wrapped
37       */
38      public DebugInputStream(InputStream   in) {
39          this.in = in;
40      }
41  
42      /**
43       * Read a byte off the stream
44       *
45       * @return the byte read off the stream
46       * @throws IOException if an exception is encountered when reading
47       */
48      public int read() throws IOException   {
49          int b = in.read();
50          System.err.write(b);
51          return b;
52      }
53  
54      /**
55       * Close the stream
56       *
57       * @throws IOException if an exception is encountered when closing
58       */
59      public void close() throws IOException   {
60          in.close();
61      }
62  }
63
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