1 /*
2 * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/Header.java,v 1.10 2003/01/28 04:40:20 jsdever Exp $
3 * $Revision: 1.10 $
4 * $Date: 2003/01/28 04:40:20 $
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 /***
67 * <p>An HTTP header.</p>
68 *
69 * @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
70 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
71 * @version $Revision: 1.10 $ $Date: 2003/01/28 04:40:20 $
72 */
73 public class Header extends NameValuePair {
74
75 // ----------------------------------------------------------- Constructors
76
77 /***
78 * Default constructor.
79 */
80 public Header() {
81 this(null, null);
82 }
83
84 /***
85 * Constructor with name and value
86 *
87 * @param name the header name
88 * @param value the header value
89 */
90 public Header(String name, String value) {
91 super(name, value);
92 }
93
94 // --------------------------------------------------------- Public Methods
95
96 /***
97 * Get a {@link String} representation of me, suitable
98 * for use in an HTTP head.
99 *
100 * @return string value for a HTTP HEAD
101 */
102 public String toExternalForm() {
103 return ((null == getName() ? "" : getName())
104 + ": "
105 + (null == getValue() ? "" : getValue())
106 + "\r\n");
107 }
108
109 /***
110 * Returns a {@link String} representation of me.
111 *
112 * @see #toExternalForm
113 * @return String representation
114 */
115 public String toString() {
116 return toExternalForm();
117 }
118
119 /***
120 * Returns an array of {@link HeaderElement}s
121 * constructed from my value.
122 *
123 * @see HeaderElement#parse
124 * @throws HttpException When ? occurs
125 * @return an array of header elements
126 */
127 public HeaderElement[] getValues() throws HttpException {
128 return HeaderElement.parse(getValue());
129 }
130
131 }
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