12009
|
1 |
/*
|
|
2 |
Copyright (c) 2001, 2002 Thai Open Source Software Center Ltd
|
|
3 |
All rights reserved.
|
|
4 |
|
|
5 |
Redistribution and use in source and binary forms, with or without
|
|
6 |
modification, are permitted provided that the following conditions are
|
|
7 |
met:
|
|
8 |
|
|
9 |
Redistributions of source code must retain the above copyright
|
|
10 |
notice, this list of conditions and the following disclaimer.
|
|
11 |
|
|
12 |
Redistributions in binary form must reproduce the above copyright
|
|
13 |
notice, this list of conditions and the following disclaimer in
|
|
14 |
the documentation and/or other materials provided with the
|
|
15 |
distribution.
|
|
16 |
|
|
17 |
Neither the name of the Thai Open Source Software Center Ltd nor
|
|
18 |
the names of its contributors may be used to endorse or promote
|
|
19 |
products derived from this software without specific prior written
|
|
20 |
permission.
|
|
21 |
|
|
22 |
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
23 |
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
24 |
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
25 |
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
|
|
26 |
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
27 |
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
28 |
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
29 |
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
30 |
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
31 |
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
32 |
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
33 |
*/
|
|
34 |
// @@3RD PARTY CODE@@
|
|
35 |
|
|
36 |
package com.sun.xml.internal.xsom.impl.util;
|
|
37 |
|
|
38 |
import java.io.IOException;
|
|
39 |
import java.io.UnsupportedEncodingException;
|
|
40 |
import java.net.URL;
|
|
41 |
|
|
42 |
public class Uri {
|
|
43 |
private static String utf8 = "UTF-8";
|
|
44 |
|
|
45 |
public static boolean isValid(String s) {
|
|
46 |
return isValidPercent(s) && isValidFragment(s) && isValidScheme(s);
|
|
47 |
}
|
|
48 |
|
|
49 |
private static final String HEX_DIGITS = "0123456789abcdef";
|
|
50 |
|
|
51 |
public static String escapeDisallowedChars(String s) {
|
|
52 |
StringBuffer buf = null;
|
|
53 |
int len = s.length();
|
|
54 |
int done = 0;
|
|
55 |
for (;;) {
|
|
56 |
int i = done;
|
|
57 |
for (;;) {
|
|
58 |
if (i == len) {
|
|
59 |
if (done == 0)
|
|
60 |
return s;
|
|
61 |
break;
|
|
62 |
}
|
|
63 |
if (isExcluded(s.charAt(i)))
|
|
64 |
break;
|
|
65 |
i++;
|
|
66 |
}
|
|
67 |
if (buf == null)
|
|
68 |
buf = new StringBuffer();
|
|
69 |
if (i > done) {
|
|
70 |
buf.append(s.substring(done, i));
|
|
71 |
done = i;
|
|
72 |
}
|
|
73 |
if (i == len)
|
|
74 |
break;
|
|
75 |
for (i++; i < len && isExcluded(s.charAt(i)); i++)
|
|
76 |
;
|
|
77 |
String tem = s.substring(done, i);
|
|
78 |
byte[] bytes;
|
|
79 |
try {
|
|
80 |
bytes = tem.getBytes(utf8);
|
|
81 |
}
|
|
82 |
catch (UnsupportedEncodingException e) {
|
|
83 |
utf8 = "UTF8";
|
|
84 |
try {
|
|
85 |
bytes = tem.getBytes(utf8);
|
|
86 |
}
|
|
87 |
catch (UnsupportedEncodingException e2) {
|
|
88 |
// Give up
|
|
89 |
return s;
|
|
90 |
}
|
|
91 |
}
|
|
92 |
for (int j = 0; j < bytes.length; j++) {
|
|
93 |
buf.append('%');
|
|
94 |
buf.append(HEX_DIGITS.charAt((bytes[j] & 0xFF) >> 4));
|
|
95 |
buf.append(HEX_DIGITS.charAt(bytes[j] & 0xF));
|
|
96 |
}
|
|
97 |
done = i;
|
|
98 |
}
|
|
99 |
return buf.toString();
|
|
100 |
}
|
|
101 |
|
|
102 |
private static String excluded = "<>\"{}|\\^`";
|
|
103 |
|
|
104 |
private static boolean isExcluded(char c) {
|
|
105 |
return c <= 0x20 || c >= 0x7F || excluded.indexOf(c) >= 0;
|
|
106 |
}
|
|
107 |
|
|
108 |
private static boolean isAlpha(char c) {
|
|
109 |
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
|
|
110 |
}
|
|
111 |
|
|
112 |
private static boolean isHexDigit(char c) {
|
|
113 |
return ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F') || isDigit(c);
|
|
114 |
}
|
|
115 |
|
|
116 |
private static boolean isDigit(char c) {
|
|
117 |
return '0' <= c && c <= '9';
|
|
118 |
}
|
|
119 |
|
|
120 |
private static boolean isSchemeChar(char c) {
|
|
121 |
return isAlpha(c) || isDigit(c) || c == '+' || c == '-' || c =='.';
|
|
122 |
}
|
|
123 |
|
|
124 |
private static boolean isValidPercent(String s) {
|
|
125 |
int len = s.length();
|
|
126 |
for (int i = 0; i < len; i++)
|
|
127 |
if (s.charAt(i) == '%') {
|
|
128 |
if (i + 2 >= len)
|
|
129 |
return false;
|
|
130 |
else if (!isHexDigit(s.charAt(i + 1))
|
|
131 |
|| !isHexDigit(s.charAt(i + 2)))
|
|
132 |
return false;
|
|
133 |
}
|
|
134 |
return true;
|
|
135 |
}
|
|
136 |
|
|
137 |
private static boolean isValidFragment(String s) {
|
|
138 |
int i = s.indexOf('#');
|
|
139 |
return i < 0 || s.indexOf('#', i + 1) < 0;
|
|
140 |
}
|
|
141 |
|
|
142 |
private static boolean isValidScheme(String s) {
|
|
143 |
if (!isAbsolute(s))
|
|
144 |
return true;
|
|
145 |
int i = s.indexOf(':');
|
|
146 |
if (i == 0
|
|
147 |
|| i + 1 == s.length()
|
|
148 |
|| !isAlpha(s.charAt(0)))
|
|
149 |
return false;
|
|
150 |
while (--i > 0)
|
|
151 |
if (!isSchemeChar(s.charAt(i)))
|
|
152 |
return false;
|
|
153 |
return true;
|
|
154 |
}
|
|
155 |
|
|
156 |
public static String resolve(String baseUri, String uriReference) throws IOException {
|
|
157 |
if (isAbsolute(uriReference))
|
|
158 |
return uriReference;
|
|
159 |
|
|
160 |
if(baseUri==null)
|
|
161 |
throw new IOException("Unable to resolve relative URI "+uriReference+" without a base URI");
|
|
162 |
|
|
163 |
if(!isAbsolute(baseUri))
|
|
164 |
throw new IOException("Unable to resolve relative URI "+uriReference+" because base URI is not absolute: "+baseUri);
|
|
165 |
|
|
166 |
return new URL(new URL(baseUri), uriReference).toString();
|
|
167 |
}
|
|
168 |
|
|
169 |
public static boolean hasFragmentId(String uri) {
|
|
170 |
return uri.indexOf('#') >= 0;
|
|
171 |
}
|
|
172 |
|
|
173 |
public static boolean isAbsolute(String uri) {
|
|
174 |
int i = uri.indexOf(':');
|
|
175 |
if (i < 0)
|
|
176 |
return false;
|
|
177 |
while (--i >= 0) {
|
|
178 |
switch (uri.charAt(i)) {
|
|
179 |
case '#':
|
|
180 |
case '/':
|
|
181 |
case '?':
|
|
182 |
return false;
|
|
183 |
}
|
|
184 |
}
|
|
185 |
return true;
|
|
186 |
}
|
|
187 |
}
|