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1   /*
2    * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/WireLogInputStream.java,v 1.15 2004/06/24 21:39:52 mbecke Exp $
3    * $Revision: 155418 $
4    * $Date: 2005-02-26 08:01:52 -0500 (Sat, 26 Feb 2005) $
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   */
29  
30  package org.apache.commons.httpclient;
31  
32  import java.io.FilterInputStream;
33  import java.io.IOException;
34  import java.io.InputStream;
35  
36  /***
37   * Logs all data read to the wire LOG.
38   *
39   * @author Ortwin Gl�ck
40   * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
41   * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
42   * 
43   * @since 2.0
44   */
45  class WireLogInputStream extends FilterInputStream {
46       
47      /*** Original input stream. */
48      private InputStream in;
49  
50      /*** The wire log to use for writing. */
51      private Wire wire;
52      
53      /***
54       * Create an instance that wraps the specified input stream.
55       * @param in The input stream.
56       * @param wire The wire log to use.
57       */
58      public WireLogInputStream(InputStream in, Wire wire) {
59          super(in);
60          this.in = in;
61          this.wire = wire;
62      }
63      /***
64       * 
65       * @see java.io.InputStream#read(byte[], int, int)
66       */
67      public int read(byte[] b, int off, int len) throws IOException {
68          int l = this.in.read(b,  off,  len);
69          if (l > 0) {
70              wire.input(b, off, l);
71          }
72          return l;
73      }
74  
75      /***
76       * 
77       * @see java.io.InputStream#read()
78       */
79      public int read() throws IOException {
80          int l = this.in.read();
81          if (l > 0) { 
82              wire.input(l);
83          }
84          return l;
85      }
86  
87      /***
88       * 
89       * @see java.io.InputStream#read(byte[])
90       */
91      public int read(byte[] b) throws IOException {
92          int l = this.in.read(b);
93          if (l > 0) {
94              wire.input(b, 0, l);
95          }
96          return l;
97      }
98  }