/*
** Java currency library package.
** Copyright (c) 1999 by Bruno Antunes
**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included	with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**
*/
package org.gjt.currency;

import java.util.*;

/**
 * Returns the locale identified by a single string with
 * locale_country[_variant] as returned by Locale.toString()
 */
public class LocaleUtil {

    private LocaleUtil() {
    }

    /**
     * Returns the locale identified by a single string with
     * locale_country[_variant] as returned by Locale.toString.
     *
     * @param localeString the string representing the Locale to build, with
     * the format language_country[_variant].
     * @return the locale identified by the locale string
     */
    public static final Locale parseLocale(String localeString) {
        StringTokenizer tokens = new StringTokenizer(localeString,"_");

        try {
            String language = tokens.nextToken();
            String country = tokens.nextToken();
            if (tokens.hasMoreTokens()) {
                String variant = tokens.nextToken();
                return new Locale(language,country,variant);
            } else {
                return new Locale(language,country);
            }
        } catch (NoSuchElementException e) {
            throw new IllegalArgumentException("Invalid locale string");
        }
    }
}