1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/client/utils/URIUtils.java $
* $Revision: 653041 $
* $Date: 2008-05-03 03:39:28 -0700 (Sat, 03 May 2008) $
*
* ====================================================================
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.client.utils;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.http.HttpHost;
/**
* A collection of utilities for {@link URI URIs}, to workaround
* bugs within the class or for ease-of-use features.
*/
public class URIUtils {
/**
* Constructs a {@link URI} using all the parameters. This should be
* used instead of
* {@link URI#URI(String, String, String, int, String, String, String)}
* or any of the other URI multi-argument URI constructors.
*
* See <a
* href="https://issues.apache.org/jira/browse/HTTPCLIENT-730">HTTPCLIENT-730</a>
* for more information.
*
* @param scheme
* Scheme name
* @param host
* Host name
* @param port
* Port number
* @param path
* Path
* @param query
* Query
* @param fragment
* Fragment
*
* @throws URISyntaxException
* If both a scheme and a path are given but the path is
* relative, if the URI string constructed from the given
* components violates RFC 2396, or if the authority
* component of the string is present but cannot be parsed
* as a server-based authority
*/
public static URI createURI(
final String scheme,
final String host,
int port,
final String path,
final String query,
final String fragment) throws URISyntaxException {
StringBuilder buffer = new StringBuilder();
if (host != null) {
if (scheme != null) {
buffer.append(scheme);
buffer.append("://");
}
buffer.append(host);
if (port > 0) {
buffer.append(':');
buffer.append(port);
}
}
if (path == null || !path.startsWith("/")) {
buffer.append('/');
}
if (path != null) {
buffer.append(path);
}
if (query != null) {
buffer.append('?');
buffer.append(query);
}
if (fragment != null) {
buffer.append('#');
buffer.append(fragment);
}
return new URI(buffer.toString());
}
/**
* A convenience method for creating a new {@link URI} whose scheme, host
* and port are taken from the target host, but whose path, query and
* fragment are taken from the existing URI. The fragment is only used if
* dropFragment is false.
*
* @param uri
* Contains the path, query and fragment to use.
* @param target
* Contains the scheme, host and port to use.
* @param dropFragment
* True if the fragment should not be copied.
*
* @throws URISyntaxException
* If the resulting URI is invalid.
*/
public static URI rewriteURI(
final URI uri,
final HttpHost target,
boolean dropFragment) throws URISyntaxException {
if (uri == null) {
throw new IllegalArgumentException("URI may nor be null");
}
if (target != null) {
return URIUtils.createURI(
target.getSchemeName(),
target.getHostName(),
target.getPort(),
uri.getRawPath(),
uri.getRawQuery(),
dropFragment ? null : uri.getRawFragment());
} else {
return URIUtils.createURI(
null,
null,
-1,
uri.getRawPath(),
uri.getRawQuery(),
dropFragment ? null : uri.getRawFragment());
}
}
/**
* A convenience method for
* {@link URIUtils#rewriteURI(URI, HttpHost, boolean)} that always keeps the
* fragment.
*/
public static URI rewriteURI(
final URI uri,
final HttpHost target) throws URISyntaxException {
return rewriteURI(uri, target, false);
}
/**
* Resolves a URI reference against a base URI. Work-around for bug in
* java.net.URI (<http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4708535>)
*
* @param baseURI the base URI
* @param reference the URI reference
* @return the resulting URI
*/
public static URI resolve(final URI baseURI, final String reference) {
return URIUtils.resolve(baseURI, URI.create(reference));
}
/**
* Resolves a URI reference against a base URI. Work-around for bug in
* java.net.URI (<http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4708535>)
*
* @param baseURI the base URI
* @param reference the URI reference
* @return the resulting URI
*/
public static URI resolve(final URI baseURI, URI reference){
if (baseURI == null) {
throw new IllegalArgumentException("Base URI may nor be null");
}
if (reference == null) {
throw new IllegalArgumentException("Reference URI may nor be null");
}
boolean emptyReference = reference.toString().length() == 0;
if (emptyReference) {
reference = URI.create("#");
}
URI resolved = baseURI.resolve(reference);
if (emptyReference) {
String resolvedString = resolved.toString();
resolved = URI.create(resolvedString.substring(0,
resolvedString.indexOf('#')));
}
return resolved;
}
/**
* This class should not be instantiated.
*/
private URIUtils() {
}
}
|
