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Java > Open Source Codes > org > apache > commons > httpclient > Wire


1 /*
2  * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/Wire.java,v 1.4.2.4 2004/06/25 03:27:40 mbecke Exp $
3  * $Revision: 1.4.2.4 $
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.IOException JavaDoc;
35 import java.io.InputStream JavaDoc;
36 import java.io.ByteArrayInputStream JavaDoc;
37 import org.apache.commons.logging.Log;
38 import org.apache.commons.logging.LogFactory;
39
40 /**
41  * Logs data to the wire LOG.
42  *
43  * @author <a HREF="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
44  *
45  * @since 2.0beta1
46  */

47
48 class Wire {
49
50     public static Wire HEADER_WIRE = new Wire(LogFactory.getLog("httpclient.wire.header"));
51
52     public static Wire CONTENT_WIRE = new Wire(LogFactory.getLog("httpclient.wire.content"));
53
54     private Log log;
55     
56     private Wire(Log log) {
57         this.log = log;
58     }
59
60     private void wire(String JavaDoc header, InputStream JavaDoc instream)
61       throws IOException JavaDoc {
62         StringBuffer JavaDoc buffer = new StringBuffer JavaDoc();
63         int ch;
64         while ((ch = instream.read()) != -1) {
65             if (ch == 13) {
66                 buffer.append("[\\r]");
67             } else if (ch == 10) {
68                     buffer.append("[\\n]\"");
69                     buffer.insert(0, "\"");
70                     buffer.insert(0, header);
71                     log.debug(buffer.toString());
72                     buffer.setLength(0);
73             } else if ((ch < 32) || (ch > 127)) {
74                 buffer.append("[0x");
75                 buffer.append(Integer.toHexString(ch));
76                 buffer.append("]");
77             } else {
78                 buffer.append((char) ch);
79             }
80         }
81         if (buffer.length() > 0) {
82             buffer.append("\"");
83             buffer.insert(0, "\"");
84             buffer.insert(0, header);
85             log.debug(buffer.toString());
86         }
87     }
88
89
90     public boolean enabled() {
91         return log.isDebugEnabled();
92     }
93     
94     public void output(InputStream JavaDoc outstream)
95       throws IOException JavaDoc {
96         if (outstream == null) {
97             throw new IllegalArgumentException JavaDoc("Output may not be null");
98         }
99         wire(">> ", outstream);
100     }
101
102     public void input(InputStream JavaDoc instream)
103       throws IOException JavaDoc {
104         if (instream == null) {
105             throw new IllegalArgumentException JavaDoc("Input may not be null");
106         }
107         wire("<< ", instream);
108     }
109
110     public void output(byte[] b, int off, int len)
111       throws IOException JavaDoc {
112         if (b == null) {
113             throw new IllegalArgumentException JavaDoc("Output may not be null");
114         }
115         wire(">> ", new ByteArrayInputStream JavaDoc(b, off, len));
116     }
117
118     public void input(byte[] b, int off, int len)
119       throws IOException JavaDoc {
120         if (b == null) {
121             throw new IllegalArgumentException JavaDoc("Input may not be null");
122         }
123         wire("<< ", new ByteArrayInputStream JavaDoc(b, off, len));
124     }
125
126     public void output(byte[] b)
127       throws IOException JavaDoc {
128         if (b == null) {
129             throw new IllegalArgumentException JavaDoc("Output may not be null");
130         }
131         wire(">> ", new ByteArrayInputStream JavaDoc(b));
132     }
133
134     public void input(byte[] b)
135       throws IOException JavaDoc {
136         if (b == null) {
137             throw new IllegalArgumentException JavaDoc("Input may not be null");
138         }
139         wire("<< ", new ByteArrayInputStream JavaDoc(b));
140     }
141
142     public void output(int b)
143       throws IOException JavaDoc {
144         output(new byte[] {(byte) b});
145     }
146
147     public void input(int b)
148       throws IOException JavaDoc {
149         input(new byte[] {(byte) b});
150     }
151
152     public void output(final String JavaDoc s)
153       throws IOException JavaDoc {
154         if (s == null) {
155             throw new IllegalArgumentException JavaDoc("Output may not be null");
156         }
157         output(s.getBytes());
158     }
159
160     public void input(final String JavaDoc s)
161       throws IOException JavaDoc {
162         if (s == null) {
163             throw new IllegalArgumentException JavaDoc("Input may not be null");
164         }
165         input(s.getBytes());
166     }
167 }
168
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