1 /*
2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
219
220 /**
221 * Compute the hash code of an abstract pathname.
222 */
223 public abstract int hashCode(File f);
224
225 // Flags for enabling/disabling performance optimizations for file
226 // name canonicalization
227 static boolean useCanonCaches = true;
228 static boolean useCanonPrefixCache = true;
229
230 private static boolean getBooleanProperty(String prop, boolean defaultVal) {
231 String val = System.getProperty(prop);
232 if (val == null) return defaultVal;
233 if (val.equalsIgnoreCase("true")) {
234 return true;
235 } else {
236 return false;
237 }
238 }
239
240 static {
241 useCanonCaches = getBooleanProperty("sun.io.useCanonCaches",
242 useCanonCaches);
243 useCanonPrefixCache = getBooleanProperty("sun.io.useCanonPrefixCache",
244 useCanonPrefixCache);
245 }
246 }
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1 /*
2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
219
220 /**
221 * Compute the hash code of an abstract pathname.
222 */
223 public abstract int hashCode(File f);
224
225 // Flags for enabling/disabling performance optimizations for file
226 // name canonicalization
227 static boolean useCanonCaches = true;
228 static boolean useCanonPrefixCache = true;
229
230 private static boolean getBooleanProperty(String prop, boolean defaultVal) {
231 String val = System.getProperty(prop);
232 if (val == null) return defaultVal;
233 if (val.equalsIgnoreCase("true")) {
234 return true;
235 } else {
236 return false;
237 }
238 }
239
240 // NUL character
241 static final char CHAR_NUL = '\u0000';
242
243 static {
244 useCanonCaches = getBooleanProperty("sun.io.useCanonCaches",
245 useCanonCaches);
246 useCanonPrefixCache = getBooleanProperty("sun.io.useCanonPrefixCache",
247 useCanonPrefixCache);
248 }
249 }
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