--- a/jdk/src/java.base/share/classes/sun/misc/ASCIICaseInsensitiveComparator.java Mon Mar 14 12:35:52 2016 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,99 +0,0 @@
-/*
- * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.misc;
-
-import java.util.Comparator;
-
-/** Implements a locale and case insensitive comparator suitable for
- strings that are known to only contain ASCII characters. Some
- tables internal to the JDK contain only ASCII data and are using
- the "generalized" java.lang.String case-insensitive comparator
- which converts each character to both upper and lower case. */
-
-public class ASCIICaseInsensitiveComparator implements Comparator<String> {
- public static final Comparator<String> CASE_INSENSITIVE_ORDER =
- new ASCIICaseInsensitiveComparator();
-
- public int compare(String s1, String s2) {
- int n1=s1.length(), n2=s2.length();
- int minLen = n1 < n2 ? n1 : n2;
- for (int i=0; i < minLen; i++) {
- char c1 = s1.charAt(i);
- char c2 = s2.charAt(i);
- assert c1 <= '\u007F' && c2 <= '\u007F';
- if (c1 != c2) {
- c1 = (char)toLower(c1);
- c2 = (char)toLower(c2);
- if (c1 != c2) {
- return c1 - c2;
- }
- }
- }
- return n1 - n2;
- }
-
- /**
- * A case insensitive hash code method to go with the case insensitive
- * compare() method.
- *
- * Returns a hash code for this ASCII string as if it were lower case.
- *
- * returns same answer as:<p>
- * <code>s.toLowerCase(Locale.US).hashCode();</code><p>
- * but does not allocate memory (it does NOT have the special
- * case Turkish rules).
- *
- * @param s a String to compute the hashcode on.
- * @return a hash code value for this object.
- */
- public static int lowerCaseHashCode(String s) {
- int h = 0;
- int len = s.length();
-
- for (int i = 0; i < len; i++) {
- h = 31*h + toLower(s.charAt(i));
- }
-
- return h;
- }
-
- /* If java.util.regex.ASCII ever becomes public or sun.*, use its code instead:*/
- static boolean isLower(int ch) {
- return ((ch-'a')|('z'-ch)) >= 0;
- }
-
- static boolean isUpper(int ch) {
- return ((ch-'A')|('Z'-ch)) >= 0;
- }
-
- static int toLower(int ch) {
- return isUpper(ch) ? (ch + 0x20) : ch;
- }
-
- static int toUpper(int ch) {
- return isLower(ch) ? (ch - 0x20) : ch;
- }
-}