author | alanb |
Tue, 21 Jan 2014 09:33:48 +0000 | |
changeset 22351 | d8ac878ba804 |
parent 21278 | ef8a3a2a72f2 |
child 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.nio.fs; |
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import java.nio.file.Path; |
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import java.io.File; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import java.util.Arrays; |
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/** |
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* Unix specific Path <--> URI conversion |
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*/ |
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class UnixUriUtils { |
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private UnixUriUtils() { } |
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/** |
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* Converts URI to Path |
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*/ |
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static Path fromUri(UnixFileSystem fs, URI uri) { |
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if (!uri.isAbsolute()) |
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throw new IllegalArgumentException("URI is not absolute"); |
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if (uri.isOpaque()) |
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throw new IllegalArgumentException("URI is not hierarchical"); |
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String scheme = uri.getScheme(); |
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if ((scheme == null) || !scheme.equalsIgnoreCase("file")) |
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throw new IllegalArgumentException("URI scheme is not \"file\""); |
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if (uri.getAuthority() != null) |
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throw new IllegalArgumentException("URI has an authority component"); |
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if (uri.getFragment() != null) |
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throw new IllegalArgumentException("URI has a fragment component"); |
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if (uri.getQuery() != null) |
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throw new IllegalArgumentException("URI has a query component"); |
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// compatibility with java.io.File |
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if (!uri.toString().startsWith("file:///")) |
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return new File(uri).toPath(); |
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// transformation use raw path |
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String p = uri.getRawPath(); |
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int len = p.length(); |
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if (len == 0) |
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throw new IllegalArgumentException("URI path component is empty"); |
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// transform escaped octets and unescaped characters to bytes |
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if (p.endsWith("/") && len > 1) |
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len--; |
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byte[] result = new byte[len]; |
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int rlen = 0; |
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int pos = 0; |
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while (pos < len) { |
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char c = p.charAt(pos++); |
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byte b; |
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if (c == '%') { |
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assert (pos+2) <= len; |
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char c1 = p.charAt(pos++); |
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char c2 = p.charAt(pos++); |
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b = (byte)((decode(c1) << 4) | decode(c2)); |
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if (b == 0) |
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throw new IllegalArgumentException("Nul character not allowed"); |
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} else { |
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assert c < 0x80; |
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b = (byte)c; |
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} |
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result[rlen++] = b; |
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} |
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if (rlen != result.length) |
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result = Arrays.copyOf(result, rlen); |
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return new UnixPath(fs, result); |
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} |
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/** |
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* Converts Path to URI |
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*/ |
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static URI toUri(UnixPath up) { |
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byte[] path = up.toAbsolutePath().asByteArray(); |
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StringBuilder sb = new StringBuilder("file:///"); |
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assert path[0] == '/'; |
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for (int i=1; i<path.length; i++) { |
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char c = (char)(path[i] & 0xff); |
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if (match(c, L_PATH, H_PATH)) { |
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sb.append(c); |
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} else { |
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sb.append('%'); |
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sb.append(hexDigits[(c >> 4) & 0x0f]); |
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sb.append(hexDigits[(c) & 0x0f]); |
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} |
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} |
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// trailing slash if directory |
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if (sb.charAt(sb.length()-1) != '/') { |
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try { |
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|
118 |
if (UnixFileAttributes.get(up, true).isDirectory()) |
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|
119 |
sb.append('/'); |
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|
120 |
} catch (UnixException x) { |
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|
121 |
// ignore |
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122 |
} |
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|
123 |
} |
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|
124 |
|
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|
125 |
try { |
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|
126 |
return new URI(sb.toString()); |
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|
127 |
} catch (URISyntaxException x) { |
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|
128 |
throw new AssertionError(x); // should not happen |
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|
129 |
} |
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|
130 |
} |
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|
131 |
|
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|
132 |
// The following is copied from java.net.URI |
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|
133 |
|
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|
134 |
// Compute the low-order mask for the characters in the given string |
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|
135 |
private static long lowMask(String chars) { |
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|
136 |
int n = chars.length(); |
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|
137 |
long m = 0; |
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|
138 |
for (int i = 0; i < n; i++) { |
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|
139 |
char c = chars.charAt(i); |
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|
140 |
if (c < 64) |
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|
141 |
m |= (1L << c); |
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|
142 |
} |
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|
143 |
return m; |
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|
144 |
} |
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|
145 |
|
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|
146 |
// Compute the high-order mask for the characters in the given string |
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|
147 |
private static long highMask(String chars) { |
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|
148 |
int n = chars.length(); |
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|
149 |
long m = 0; |
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|
150 |
for (int i = 0; i < n; i++) { |
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|
151 |
char c = chars.charAt(i); |
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|
152 |
if ((c >= 64) && (c < 128)) |
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|
153 |
m |= (1L << (c - 64)); |
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|
154 |
} |
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|
155 |
return m; |
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|
156 |
} |
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|
157 |
|
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|
158 |
// Compute a low-order mask for the characters |
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|
159 |
// between first and last, inclusive |
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|
160 |
private static long lowMask(char first, char last) { |
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|
161 |
long m = 0; |
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|
162 |
int f = Math.max(Math.min(first, 63), 0); |
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|
163 |
int l = Math.max(Math.min(last, 63), 0); |
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|
164 |
for (int i = f; i <= l; i++) |
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|
165 |
m |= 1L << i; |
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|
166 |
return m; |
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|
167 |
} |
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|
168 |
|
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|
169 |
// Compute a high-order mask for the characters |
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|
170 |
// between first and last, inclusive |
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|
171 |
private static long highMask(char first, char last) { |
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|
172 |
long m = 0; |
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|
173 |
int f = Math.max(Math.min(first, 127), 64) - 64; |
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|
174 |
int l = Math.max(Math.min(last, 127), 64) - 64; |
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|
175 |
for (int i = f; i <= l; i++) |
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parents:
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|
176 |
m |= 1L << i; |
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|
177 |
return m; |
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|
178 |
} |
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|
179 |
|
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|
180 |
// Tell whether the given character is permitted by the given mask pair |
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|
181 |
private static boolean match(char c, long lowMask, long highMask) { |
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|
182 |
if (c < 64) |
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|
183 |
return ((1L << c) & lowMask) != 0; |
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changeset
|
184 |
if (c < 128) |
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|
185 |
return ((1L << (c - 64)) & highMask) != 0; |
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|
186 |
return false; |
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parents:
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|
187 |
} |
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|
188 |
|
8184
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7003155: (fs) Paths.get(<file-uri>) does not handle escaped octets correctly
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diff
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|
189 |
// decode |
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diff
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|
190 |
private static int decode(char c) { |
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diff
changeset
|
191 |
if ((c >= '0') && (c <= '9')) |
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|
192 |
return c - '0'; |
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changeset
|
193 |
if ((c >= 'a') && (c <= 'f')) |
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parents:
5506
diff
changeset
|
194 |
return c - 'a' + 10; |
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5506
diff
changeset
|
195 |
if ((c >= 'A') && (c <= 'F')) |
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diff
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|
196 |
return c - 'A' + 10; |
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|
197 |
throw new AssertionError(); |
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diff
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|
198 |
} |
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diff
changeset
|
199 |
|
2057
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|
200 |
// digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | |
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|
201 |
// "8" | "9" |
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|
202 |
private static final long L_DIGIT = lowMask('0', '9'); |
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parents:
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|
203 |
private static final long H_DIGIT = 0L; |
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|
204 |
|
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parents:
diff
changeset
|
205 |
// upalpha = "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | |
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|
206 |
// "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | |
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|
207 |
// "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z" |
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|
208 |
private static final long L_UPALPHA = 0L; |
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parents:
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changeset
|
209 |
private static final long H_UPALPHA = highMask('A', 'Z'); |
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|
210 |
|
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parents:
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changeset
|
211 |
// lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | |
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|
212 |
// "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | |
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changeset
|
213 |
// "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z" |
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parents:
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changeset
|
214 |
private static final long L_LOWALPHA = 0L; |
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parents:
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changeset
|
215 |
private static final long H_LOWALPHA = highMask('a', 'z'); |
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parents:
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changeset
|
216 |
|
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parents:
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|
217 |
// alpha = lowalpha | upalpha |
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|
218 |
private static final long L_ALPHA = L_LOWALPHA | L_UPALPHA; |
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|
219 |
private static final long H_ALPHA = H_LOWALPHA | H_UPALPHA; |
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changeset
|
220 |
|
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diff
changeset
|
221 |
// alphanum = alpha | digit |
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|
222 |
private static final long L_ALPHANUM = L_DIGIT | L_ALPHA; |
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|
223 |
private static final long H_ALPHANUM = H_DIGIT | H_ALPHA; |
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parents:
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changeset
|
224 |
|
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parents:
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changeset
|
225 |
// mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | |
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|
226 |
// "(" | ")" |
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changeset
|
227 |
private static final long L_MARK = lowMask("-_.!~*'()"); |
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parents:
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changeset
|
228 |
private static final long H_MARK = highMask("-_.!~*'()"); |
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parents:
diff
changeset
|
229 |
|
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// unreserved = alphanum | mark |
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private static final long L_UNRESERVED = L_ALPHANUM | L_MARK; |
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private static final long H_UNRESERVED = H_ALPHANUM | H_MARK; |
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// pchar = unreserved | escaped | |
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// ":" | "@" | "&" | "=" | "+" | "$" | "," |
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private static final long L_PCHAR |
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= L_UNRESERVED | lowMask(":@&=+$,"); |
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private static final long H_PCHAR |
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= H_UNRESERVED | highMask(":@&=+$,"); |
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// All valid path characters |
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private static final long L_PATH = L_PCHAR | lowMask(";/"); |
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private static final long H_PATH = H_PCHAR | highMask(";/"); |
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|
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private final static char[] hexDigits = { |
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'0', '1', '2', '3', '4', '5', '6', '7', |
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'8', '9', 'A', 'B', 'C', 'D', 'E', 'F' |
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}; |
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} |