2712N/A/*
3966N/A * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
2712N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2712N/A *
2712N/A * This code is free software; you can redistribute it and/or modify it
2712N/A * under the terms of the GNU General Public License version 2 only, as
2712N/A * published by the Free Software Foundation. Oracle designates this
2712N/A * particular file as subject to the "Classpath" exception as provided
2712N/A * by Oracle in the LICENSE file that accompanied this code.
2712N/A *
2712N/A * This code is distributed in the hope that it will be useful, but WITHOUT
2712N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2712N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2712N/A * version 2 for more details (a copy is included in the LICENSE file that
2712N/A * accompanied this code).
2712N/A *
2712N/A * You should have received a copy of the GNU General Public License version
2712N/A * 2 along with this work; if not, write to the Free Software Foundation,
2712N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2712N/A *
2712N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2712N/A * or visit www.oracle.com if you need additional information or have any
2712N/A * questions.
2712N/A */
2712N/A
2712N/A/*
2712N/A *******************************************************************************
2712N/A * Copyright (C) 2009, International Business Machines Corporation and *
2712N/A * others. All Rights Reserved. *
2712N/A *******************************************************************************
2712N/A */
2712N/Apackage sun.util.locale;
2712N/A
3966N/Aimport java.util.List;
3966N/Aimport java.util.Map;
3966N/Aimport java.util.Set;
3966N/A
3966N/A/**
3966N/A * Collection of static utility methods for Locale support. The
3966N/A * methods which manipulate characters or strings support ASCII only.
3966N/A */
3966N/Apublic final class LocaleUtils {
3966N/A
3966N/A private LocaleUtils() {
3966N/A }
3966N/A
3966N/A /**
3966N/A * Compares two ASCII Strings s1 and s2, ignoring case.
3966N/A */
2712N/A public static boolean caseIgnoreMatch(String s1, String s2) {
2712N/A if (s1 == s2) {
2712N/A return true;
2712N/A }
3966N/A
2712N/A int len = s1.length();
2712N/A if (len != s2.length()) {
2712N/A return false;
2712N/A }
3966N/A
3966N/A for (int i = 0; i < len; i++) {
2712N/A char c1 = s1.charAt(i);
2712N/A char c2 = s2.charAt(i);
2712N/A if (c1 != c2 && toLower(c1) != toLower(c2)) {
3966N/A return false;
2712N/A }
2712N/A }
3966N/A return true;
2712N/A }
2712N/A
3966N/A static int caseIgnoreCompare(String s1, String s2) {
2712N/A if (s1 == s2) {
2712N/A return 0;
2712N/A }
3966N/A return toLowerString(s1).compareTo(toLowerString(s2));
2712N/A }
2712N/A
3966N/A static char toUpper(char c) {
3966N/A return isLower(c) ? (char)(c - 0x20) : c;
2712N/A }
2712N/A
3966N/A static char toLower(char c) {
3966N/A return isUpper(c) ? (char)(c + 0x20) : c;
2712N/A }
2712N/A
3966N/A /**
3966N/A * Converts the given ASCII String to lower-case.
3966N/A */
2712N/A public static String toLowerString(String s) {
3966N/A int len = s.length();
2712N/A int idx = 0;
3966N/A for (; idx < len; idx++) {
3966N/A if (isUpper(s.charAt(idx))) {
2712N/A break;
2712N/A }
2712N/A }
3966N/A if (idx == len) {
2712N/A return s;
2712N/A }
3966N/A
3966N/A char[] buf = new char[len];
3966N/A for (int i = 0; i < len; i++) {
3966N/A char c = s.charAt(i);
3966N/A buf[i] = (i < idx) ? c : toLower(c);
2712N/A }
3966N/A return new String(buf);
2712N/A }
2712N/A
3966N/A static String toUpperString(String s) {
3966N/A int len = s.length();
2712N/A int idx = 0;
3966N/A for (; idx < len; idx++) {
3966N/A if (isLower(s.charAt(idx))) {
2712N/A break;
2712N/A }
2712N/A }
3966N/A if (idx == len) {
2712N/A return s;
2712N/A }
3966N/A
3966N/A char[] buf = new char[len];
3966N/A for (int i = 0; i < len; i++) {
3966N/A char c = s.charAt(i);
3966N/A buf[i] = (i < idx) ? c : toUpper(c);
2712N/A }
3966N/A return new String(buf);
2712N/A }
2712N/A
3966N/A static String toTitleString(String s) {
3966N/A int len;
3966N/A if ((len = s.length()) == 0) {
2712N/A return s;
2712N/A }
2712N/A int idx = 0;
3966N/A if (!isLower(s.charAt(idx))) {
3966N/A for (idx = 1; idx < len; idx++) {
3966N/A if (isUpper(s.charAt(idx))) {
2712N/A break;
2712N/A }
2712N/A }
2712N/A }
3966N/A if (idx == len) {
2712N/A return s;
2712N/A }
3966N/A
3966N/A char[] buf = new char[len];
3966N/A for (int i = 0; i < len; i++) {
3966N/A char c = s.charAt(i);
3966N/A if (i == 0 && idx == 0) {
3966N/A buf[i] = toUpper(c);
3966N/A } else if (i < idx) {
3966N/A buf[i] = c;
3966N/A } else {
3966N/A buf[i] = toLower(c);
3966N/A }
2712N/A }
3966N/A return new String(buf);
2712N/A }
2712N/A
3966N/A private static boolean isUpper(char c) {
3966N/A return c >= 'A' && c <= 'Z';
3966N/A }
3966N/A
3966N/A private static boolean isLower(char c) {
3966N/A return c >= 'a' && c <= 'z';
3966N/A }
3966N/A
3966N/A static boolean isAlpha(char c) {
2712N/A return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
2712N/A }
2712N/A
3966N/A static boolean isAlphaString(String s) {
3966N/A int len = s.length();
3966N/A for (int i = 0; i < len; i++) {
2712N/A if (!isAlpha(s.charAt(i))) {
3966N/A return false;
2712N/A }
2712N/A }
3966N/A return true;
2712N/A }
2712N/A
3966N/A static boolean isNumeric(char c) {
2712N/A return (c >= '0' && c <= '9');
2712N/A }
2712N/A
3966N/A static boolean isNumericString(String s) {
3966N/A int len = s.length();
3966N/A for (int i = 0; i < len; i++) {
2712N/A if (!isNumeric(s.charAt(i))) {
3966N/A return false;
2712N/A }
2712N/A }
3966N/A return true;
2712N/A }
2712N/A
3966N/A static boolean isAlphaNumeric(char c) {
2712N/A return isAlpha(c) || isNumeric(c);
2712N/A }
2712N/A
3966N/A static boolean isAlphaNumericString(String s) {
3966N/A int len = s.length();
3966N/A for (int i = 0; i < len; i++) {
2712N/A if (!isAlphaNumeric(s.charAt(i))) {
3966N/A return false;
2712N/A }
2712N/A }
3966N/A return true;
2712N/A }
2712N/A
3966N/A static boolean isEmpty(String str) {
3966N/A return str == null || str.length() == 0;
3966N/A }
2712N/A
3966N/A static boolean isEmpty(Set<?> set) {
3966N/A return set == null || set.isEmpty();
3966N/A }
2712N/A
3966N/A static boolean isEmpty(Map<?, ?> map) {
3966N/A return map == null || map.isEmpty();
3966N/A }
3966N/A
3966N/A static boolean isEmpty(List<?> list) {
3966N/A return list == null || list.isEmpty();
2712N/A }
2712N/A}