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1   /*
2    * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/WireLogInputStream.java,v 1.12.2.2 2004/06/25 03:27:40 mbecke Exp $
3    * $Revision: 1.12.2.2 $
4    * $Date: 2004/06/25 03:27:40 $
5    *
6    * ====================================================================
7    *
8    *  Copyright 1999-2004 The Apache Software Foundation
9    *
10   *  Licensed under the Apache License, Version 2.0 (the "License");
11   *  you may not use this file except in compliance with the License.
12   *  You may obtain a copy of the License at
13   *
14   *      http://www.apache.org/licenses/LICENSE-2.0
15   *
16   *  Unless required by applicable law or agreed to in writing, software
17   *  distributed under the License is distributed on an "AS IS" BASIS,
18   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19   *  See the License for the specific language governing permissions and
20   *  limitations under the License.
21   * ====================================================================
22   *
23   * This software consists of voluntary contributions made by many
24   * individuals on behalf of the Apache Software Foundation.  For more
25   * information on the Apache Software Foundation, please see
26   * <http://www.apache.org/>.
27   *
28   * [Additional notices, if required by prior licensing conditions]
29   *
30   */
31  
32  package org.apache.commons.httpclient;
33  
34  import java.io.FilterInputStream;
35  import java.io.IOException;
36  import java.io.InputStream;
37  
38  /***
39   * Logs all data read to the wire LOG.
40   *
41   * @author Ortwin Gl�ck
42   * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
43   * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
44   * 
45   * @since 2.0
46   */
47  
48  class WireLogInputStream extends FilterInputStream {
49       
50      /*** Original input stream. */
51      private InputStream in;
52  
53      /*** The wire log to use for writing. */
54      private Wire wire;
55      
56      /***
57       * Create an instance that wraps the specified input stream.
58       * @param in The input stream.
59       * @param wire The wire log to use.
60       */
61      public WireLogInputStream(InputStream in, Wire wire) {
62          super(in);
63          this.in = in;
64          this.wire = wire;
65      }
66      /***
67       * 
68       * @see java.io.InputStream#read(byte[], int, int)
69       */
70      public int read(byte[] b, int off, int len) throws IOException {
71          int l = this.in.read(b,  off,  len);
72          if (l > 0) {
73              wire.input(b, off, l);
74          }
75          return l;
76      }
77  
78      /***
79       * 
80       * @see java.io.InputStream#read()
81       */
82      public int read() throws IOException {
83          int l = this.in.read();
84          if (l > 0) { 
85              wire.input(l);
86          }
87          return l;
88      }
89  
90      /***
91       * 
92       * @see java.io.InputStream#read(byte[])
93       */
94      public int read(byte[] b) throws IOException {
95          int l = this.in.read(b);
96          if (l > 0) {
97              wire.input(b, 0, l);
98          }
99          return l;
100     }
101 }