com.enonic.cms.business.localization.resource.LocalizationResourceBundleUtils.java Source code

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Here is the source code for com.enonic.cms.business.localization.resource.LocalizationResourceBundleUtils.java

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/*
 * Copyright 2000-2011 Enonic AS
 * http://www.enonic.com/license
 */
package com.enonic.cms.business.localization.resource;

import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;

import com.enonic.esl.util.RegexpUtil;

import com.enonic.cms.domain.localization.LocaleParsingException;

/**
 * Created by rmy - Date: Apr 24, 2009
 */
public class LocalizationResourceBundleUtils {
    public static final String RESOURCE_FILE_POSTFIX = "properties";

    // Pattern to parse locale string on format Languagcode[-country][anything]

    private static final String LOCALE_PATTERN = "^(\\w{2})(_(\\w{2}))?(_(\\w{2}))?$";

    public static Locale parseLocaleString(String localeAsString) {
        localeAsString = localeAsString.replace('-', '_');

        Matcher matcher = RegexpUtil.match(localeAsString, LOCALE_PATTERN, Pattern.CASE_INSENSITIVE);

        String language = "";
        String country = "";
        String variant = "";

        if (matcher.matches()) {
            language = getLanguageFromMatcher(matcher);
            country = getCountryFromMatcher(matcher);
            variant = getVariantFromMatcher(matcher);
        } else {
            throw new LocaleParsingException(
                    "Could not parse locale string: " + localeAsString + " to valid locale");
        }

        return new Locale(language, country == null ? "" : country, variant == null ? "" : variant);
    }

    public static String createLocaleString(Locale locale) {
        String localeString = locale.getLanguage();

        return StringUtils.isNotEmpty(locale.getCountry()) ? localeString + "-" + locale.getCountry()
                : localeString;
    }

    private static String getLanguageFromMatcher(Matcher matcher) {
        return matcher.group(1);
    }

    private static String getCountryFromMatcher(Matcher matcher) {
        return matcher.group(3);
    }

    private static String getVariantFromMatcher(Matcher matcher) {
        return matcher.group(5);
    }

}