de.cubeisland.engine.reflect.codec.converter.LocaleConverter Maven / Gradle / Ivy

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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Anselm Brehme, Phillip Schichtel
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package de.cubeisland.engine.reflect.codec.converter;

import java.util.Locale;

import de.cubeisland.engine.reflect.codec.ConverterManager;
import de.cubeisland.engine.reflect.exception.ConversionException;
import de.cubeisland.engine.reflect.node.Node;
import de.cubeisland.engine.reflect.node.StringNode;

/**
 * A Converter for {@link java.util.Locale}
 */
public class LocaleConverter implements Converter
{
    public Node toNode(Locale locale, ConverterManager manager) throws ConversionException
    {
        return StringNode.of(locale.getLanguage().toLowerCase(Locale.ENGLISH) + '_' +
                                 locale.getCountry().toUpperCase(Locale.ENGLISH));
    }

    public Locale fromNode(Node node, ConverterManager manager) throws ConversionException
    {
        if (node instanceof StringNode)
        {
            String localeTag = ((StringNode)node).getValue().trim();

            localeTag = localeTag.replace("-", "_");

            String[] parts = localeTag.split("_", 2);
            String language = parts[0];
            String country = "";

            if (language.length() > 3)
            {
                language = language.substring(0, 2);
            }
            if (parts.length > 1)
            {
                country = parts[1];
                if (country.length() > 2)
                {
                    country = country.substring(0, 2);
                }
            }
            return new Locale(language, country);
        }
        throw ConversionException.of(this, node, "Locales can only be loaded from a string node!");
    }
}