| /* |
| * Copyright (c) 2010, 2011, 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. |
| */ |
| |
| /* |
| ******************************************************************************* |
| * Copyright (C) 2009, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| package sun.util.locale; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Collection of static utility methods for Locale support. The |
| * methods which manipulate characters or strings support ASCII only. |
| */ |
| public final class LocaleUtils { |
| |
| private LocaleUtils() { |
| } |
| |
| /** |
| * Compares two ASCII Strings s1 and s2, ignoring case. |
| */ |
| public static boolean caseIgnoreMatch(String s1, String s2) { |
| if (s1 == s2) { |
| return true; |
| } |
| |
| int len = s1.length(); |
| if (len != s2.length()) { |
| return false; |
| } |
| |
| for (int i = 0; i < len; i++) { |
| char c1 = s1.charAt(i); |
| char c2 = s2.charAt(i); |
| if (c1 != c2 && toLower(c1) != toLower(c2)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| static int caseIgnoreCompare(String s1, String s2) { |
| if (s1 == s2) { |
| return 0; |
| } |
| return toLowerString(s1).compareTo(toLowerString(s2)); |
| } |
| |
| static char toUpper(char c) { |
| return isLower(c) ? (char)(c - 0x20) : c; |
| } |
| |
| static char toLower(char c) { |
| return isUpper(c) ? (char)(c + 0x20) : c; |
| } |
| |
| /** |
| * Converts the given ASCII String to lower-case. |
| */ |
| public static String toLowerString(String s) { |
| int len = s.length(); |
| int idx = 0; |
| for (; idx < len; idx++) { |
| if (isUpper(s.charAt(idx))) { |
| break; |
| } |
| } |
| if (idx == len) { |
| return s; |
| } |
| |
| char[] buf = new char[len]; |
| for (int i = 0; i < len; i++) { |
| char c = s.charAt(i); |
| buf[i] = (i < idx) ? c : toLower(c); |
| } |
| return new String(buf); |
| } |
| |
| static String toUpperString(String s) { |
| int len = s.length(); |
| int idx = 0; |
| for (; idx < len; idx++) { |
| if (isLower(s.charAt(idx))) { |
| break; |
| } |
| } |
| if (idx == len) { |
| return s; |
| } |
| |
| char[] buf = new char[len]; |
| for (int i = 0; i < len; i++) { |
| char c = s.charAt(i); |
| buf[i] = (i < idx) ? c : toUpper(c); |
| } |
| return new String(buf); |
| } |
| |
| static String toTitleString(String s) { |
| int len; |
| if ((len = s.length()) == 0) { |
| return s; |
| } |
| int idx = 0; |
| if (!isLower(s.charAt(idx))) { |
| for (idx = 1; idx < len; idx++) { |
| if (isUpper(s.charAt(idx))) { |
| break; |
| } |
| } |
| } |
| if (idx == len) { |
| return s; |
| } |
| |
| char[] buf = new char[len]; |
| for (int i = 0; i < len; i++) { |
| char c = s.charAt(i); |
| if (i == 0 && idx == 0) { |
| buf[i] = toUpper(c); |
| } else if (i < idx) { |
| buf[i] = c; |
| } else { |
| buf[i] = toLower(c); |
| } |
| } |
| return new String(buf); |
| } |
| |
| private static boolean isUpper(char c) { |
| return c >= 'A' && c <= 'Z'; |
| } |
| |
| private static boolean isLower(char c) { |
| return c >= 'a' && c <= 'z'; |
| } |
| |
| static boolean isAlpha(char c) { |
| return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
| } |
| |
| static boolean isAlphaString(String s) { |
| int len = s.length(); |
| for (int i = 0; i < len; i++) { |
| if (!isAlpha(s.charAt(i))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| static boolean isNumeric(char c) { |
| return (c >= '0' && c <= '9'); |
| } |
| |
| static boolean isNumericString(String s) { |
| int len = s.length(); |
| for (int i = 0; i < len; i++) { |
| if (!isNumeric(s.charAt(i))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| static boolean isAlphaNumeric(char c) { |
| return isAlpha(c) || isNumeric(c); |
| } |
| |
| static boolean isAlphaNumericString(String s) { |
| int len = s.length(); |
| for (int i = 0; i < len; i++) { |
| if (!isAlphaNumeric(s.charAt(i))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| static boolean isEmpty(String str) { |
| return str == null || str.length() == 0; |
| } |
| |
| static boolean isEmpty(Set<?> set) { |
| return set == null || set.isEmpty(); |
| } |
| |
| static boolean isEmpty(Map<?, ?> map) { |
| return map == null || map.isEmpty(); |
| } |
| |
| static boolean isEmpty(List<?> list) { |
| return list == null || list.isEmpty(); |
| } |
| } |