1 /*
2 * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/Wire.java,v 1.4.2.1 2003/08/27 14:07:00 oglueck Exp $
3 * $Revision: 1.4.2.1 $
4 * $Date: 2003/08/27 14:07:00 $
5 *
6 * ====================================================================
7 *
8 * The Apache Software License, Version 1.1
9 *
10 * Copyright (c) 1999-2003 The Apache Software Foundation. All rights
11 * reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in
22 * the documentation and/or other materials provided with the
23 * distribution.
24 *
25 * 3. The end-user documentation included with the redistribution, if
26 * any, must include the following acknowlegement:
27 * "This product includes software developed by the
28 * Apache Software Foundation (http://www.apache.org/)."
29 * Alternately, this acknowlegement may appear in the software itself,
30 * if and wherever such third-party acknowlegements normally appear.
31 *
32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
33 * Foundation" must not be used to endorse or promote products derived
34 * from this software without prior written permission. For written
35 * permission, please contact apache@apache.org.
36 *
37 * 5. Products derived from this software may not be called "Apache"
38 * nor may "Apache" appear in their names without prior written
39 * permission of the Apache Group.
40 *
41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * SUCH DAMAGE.
53 * ====================================================================
54 *
55 * This software consists of voluntary contributions made by many
56 * individuals on behalf of the Apache Software Foundation. For more
57 * information on the Apache Software Foundation, please see
58 * <http://www.apache.org/>.
59 *
60 * [Additional notices, if required by prior licensing conditions]
61 *
62 */
63
64 package org.apache.commons.httpclient;
65
66 import java.io.IOException;
67 import java.io.InputStream;
68 import java.io.ByteArrayInputStream;
69 import java.io.Reader;
70 import java.io.InputStreamReader;
71 import java.io.UnsupportedEncodingException;
72 import org.apache.commons.logging.Log;
73 import org.apache.commons.logging.LogFactory;
74
75 /***
76 * Logs data to the wire LOG.
77 *
78 * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
79 *
80 * @since 2.0beta1
81 */
82
83 class Wire {
84
85 /*** Log for any wire messages. */
86 private static final Log WIRE_LOG = LogFactory.getLog("httpclient.wire");
87
88 private static void wire(String header, InputStream instream)
89 throws IOException {
90 Reader reader = null;
91 try {
92 reader = new InputStreamReader(instream, "US-ASCII");
93 } catch (UnsupportedEncodingException e) {
94 reader = new InputStreamReader(instream);
95 }
96 StringBuffer buffer = new StringBuffer();
97 int ch;
98 while ((ch = reader.read()) != -1) {
99 if (ch == 13) {
100 buffer.append("[//r]");
101 } else if (ch == 10) {
102 buffer.append("[//n]\"");
103 buffer.insert(0, "\"");
104 buffer.insert(0, header);
105 WIRE_LOG.debug(buffer.toString());
106 buffer.setLength(0);
107 } else if ((ch < 32) || (ch > 127)) {
108 buffer.append("[0x");
109 buffer.append(Integer.toHexString(ch));
110 buffer.append("]");
111 } else {
112 buffer.append((char) ch);
113 }
114 }
115 if (buffer.length() > 0) {
116 buffer.append("\"");
117 buffer.insert(0, "\"");
118 buffer.insert(0, header);
119 WIRE_LOG.debug(buffer.toString());
120 }
121 }
122
123
124 public static final boolean enabled() {
125 return WIRE_LOG.isDebugEnabled();
126 }
127
128 public static final void output(InputStream outstream)
129 throws IOException {
130 if (outstream == null) {
131 throw new IllegalArgumentException("Output may not be null");
132 }
133 wire(">> ", outstream);
134 }
135
136 public static final void input(InputStream instream)
137 throws IOException {
138 if (instream == null) {
139 throw new IllegalArgumentException("Input may not be null");
140 }
141 wire("<< ", instream);
142 }
143
144 public static final void output(byte[] b, int off, int len)
145 throws IOException {
146 if (b == null) {
147 throw new IllegalArgumentException("Output may not be null");
148 }
149 wire(">> ", new ByteArrayInputStream(b, off, len));
150 }
151
152 public static final void input(byte[] b, int off, int len)
153 throws IOException {
154 if (b == null) {
155 throw new IllegalArgumentException("Input may not be null");
156 }
157 wire("<< ", new ByteArrayInputStream(b, off, len));
158 }
159
160 public static final void output(byte[] b)
161 throws IOException {
162 if (b == null) {
163 throw new IllegalArgumentException("Output may not be null");
164 }
165 wire(">> ", new ByteArrayInputStream(b));
166 }
167
168 public static final void input(byte[] b)
169 throws IOException {
170 if (b == null) {
171 throw new IllegalArgumentException("Input may not be null");
172 }
173 wire("<< ", new ByteArrayInputStream(b));
174 }
175
176 public static final void output(int b)
177 throws IOException {
178 output(new byte[] {(byte) b});
179 }
180
181 public static final void input(int b)
182 throws IOException {
183 input(new byte[] {(byte) b});
184 }
185
186 public static final void output(final String s)
187 throws IOException {
188 if (s == null) {
189 throw new IllegalArgumentException("Output may not be null");
190 }
191 output(s.getBytes());
192 }
193
194 public static final void input(final String s)
195 throws IOException {
196 if (s == null) {
197 throw new IllegalArgumentException("Input may not be null");
198 }
199 input(s.getBytes());
200 }
201 }
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