get Closest Locale - Java Internationalization

Java examples for Internationalization:Locale

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Description

get Closest Locale

Demo Code

/*//from  www .j av a2s. c o  m
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2006 - 2016 Pentaho Corporation..  All rights reserved.
 */
//package com.java2s;

public class Main {
    public static String getClosestLocale(String locale, String[] locales) {
        // see if this locale is supported
        if (locales == null || locales.length == 0) {
            return locale;
        }
        if (locale == null || locale.length() == 0) {
            return locales[0];
        }
        String localeLanguage = locale.substring(0, 2);
        String localeCountry = (locale.length() > 4) ? locale.substring(0,
                5) : localeLanguage;
        int looseMatch = -1;
        int closeMatch = -1;
        int exactMatch = -1;
        for (int idx = 0; idx < locales.length; idx++) {
            if (locales[idx].equals(locale)) {
                exactMatch = idx;
                break;
            } else if (locales[idx].length() > 1
                    && locales[idx].substring(0, 2).equals(localeLanguage)) {
                looseMatch = idx;
            } else if (locales[idx].length() > 4
                    && locales[idx].substring(0, 5).equals(localeCountry)) {
                closeMatch = idx;
            }
        }
        if (exactMatch == -1) {
            if (closeMatch != -1) {
                locale = locales[closeMatch];
            } else if (looseMatch != -1) {
                locale = locales[looseMatch];
            } else {
                // no locale is close , just go with the first?
                locale = locales[0];
            }
        }
        return locale;
    }
}

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