Get Locale From String : URL « Network Protocol « Java

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Java » Network Protocol » URL 




Get Locale From String
    
/**********************************************************************
Copyright (c) 2003 Erik Bengtson and others. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Contributors:
    ...
**********************************************************************/


import java.util.Locale;

/**
 * Utility class for internationalization. This class provides a 
 * central location to do specialized formatting in both 
 * a default and a locale specfic manner.
 *
 @version $Revision: 1.2 $ 
 */
public final class I18nUtils
{
    private I18nUtils()
    {
        // protects from instantiation 
    }
    
    /**
     * Convert a string based locale into a Locale Object.
     * Assumes the string has form "{language}_{country}_{variant}".
     * Examples: "en", "de_DE", "_GB", "en_US_WIN", "de__POSIX", "fr_MAC"
     *  
     @param localeString The String
     @return the Locale
     */
    public static Locale getLocaleFromString(String localeString)
    {
        if (localeString == null)
        {
            return null;
        }
        localeString = localeString.trim();
        if (localeString.toLowerCase().equals("default"))
        {
            return Locale.getDefault();
        }

        // Extract language
        int languageIndex = localeString.indexOf('_');
        String language = null;
        if (languageIndex == -1)
        {
            // No further "_" so is "{language}" only
            return new Locale(localeString, "");
        }
        else
        {
            language = localeString.substring(0, languageIndex);
        }

        // Extract country
        int countryIndex = localeString.indexOf('_', languageIndex + 1);
        String country = null;
        if (countryIndex == -1)
        {
            // No further "_" so is "{language}_{country}"
            country = localeString.substring(languageIndex+1);
            return new Locale(language, country);
        }
        else
        {
            // Assume all remaining is the variant so is "{language}_{country}_{variant}"
            country = localeString.substring(languageIndex+1, countryIndex);
            String variant = localeString.substring(countryIndex+1);
            return new Locale(language, country, variant);
        }
    }
}

   
    
    
    
  














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