Java Locale.stripExtensions方法代碼示例

import java.util.Locale; //導入方法依賴的package包/類
private static boolean isSupportedNativeDigitLocale(Locale locale) {
    // special case for th_TH_TH
    if (JRELocaleConstants.TH_TH_TH.equals(locale)) {
        return isNativeDigit("th-TH");
    }

    String numtype = null;
    Locale base = locale;
    if (locale.hasExtensions()) {
        numtype = locale.getUnicodeLocaleType("nu");
        base = locale.stripExtensions();
    }

    if (supportedLocaleSet.contains(base)) {
        // Only supports Latin or Thai (in thai locales) digits.
        if (numtype == null || numtype.equals("latn")) {
            return true;
        } else if (locale.getLanguage().equals("th")) {
            return "thai".equals(numtype) &&
                   isNativeDigit(locale.toLanguageTag());
        }
    }

    return false;
}
 

import java.util.Locale; //導入方法依賴的package包/類
@Override
    public boolean isSupportedProviderLocale(Locale locale,  Set<String> langtags) {
        if (Locale.ROOT.equals(locale)) {
            return true;
}

        locale = locale.stripExtensions();
        if (langtags.contains(locale.toLanguageTag())) {
            return true;
        }

        String oldname = locale.toString().replace('_', '-');
        return langtags.contains(oldname) ||
                   "ja-JP-JP".equals(oldname) ||
                   "th-TH-TH".equals(oldname) ||
                   "no-NO-NY".equals(oldname);
    }
 

import java.util.Locale; //導入方法依賴的package包/類
@Override
public boolean isSupportedLocale(Locale locale) {
    if (Locale.ROOT.equals(locale)) {
        return true;
    }
    String calendarType = null;
    if (locale.hasExtensions()) {
        calendarType = locale.getUnicodeLocaleType("ca");
        locale = locale.stripExtensions();
    }

    if (calendarType != null) {
        switch (calendarType) {
        case "buddhist":
        case "japanese":
        case "gregory":
        case "islamic":
        case "roc":
            break;
        default:
            // Unknown calendar type
            return false;
        }
    }
    if (langtags.contains(locale.toLanguageTag())) {
        return true;
    }
    if (type == LocaleProviderAdapter.Type.JRE) {
        String oldname = locale.toString().replace('_', '-');
        return langtags.contains(oldname);
    }
    return false;
}
 

import java.util.Locale; //導入方法依賴的package包/類
/**
     * Returns {@code true} if the given {@code locale} is supported by
     * this locale service provider. The given {@code locale} may contain
     * <a href="../Locale.html#def_extensions">extensions</a> that should be
     * taken into account for the support determination.
     *
     * <p>The default implementation returns {@code true} if the given {@code locale}
     * is equal to any of the available {@code Locale}s returned by
     * {@link #getAvailableLocales()} with ignoring any extensions in both the
     * given {@code locale} and the available locales. Concrete locale service
     * provider implementations should override this method if those
     * implementations are {@code Locale} extensions-aware. For example,
     * {@code DecimalFormatSymbolsProvider} implementations will need to check
     * extensions in the given {@code locale} to see if any numbering system is
     * specified and can be supported. However, {@code CollatorProvider}
     * implementations may not be affected by any particular numbering systems,
     * and in that case, extensions for numbering systems should be ignored.
     *
     * @param locale a {@code Locale} to be tested
     * @return {@code true} if the given {@code locale} is supported by this
     *         provider; {@code false} otherwise.
     * @throws NullPointerException
     *         if the given {@code locale} is {@code null}
     * @see Locale#hasExtensions()
     * @see Locale#stripExtensions()
     * @since 1.8
     */
    public boolean isSupportedLocale(Locale locale) {
        locale = locale.stripExtensions(); // throws NPE if locale == null
        for (Locale available : getAvailableLocales()) {
            if (locale.equals(available.stripExtensions())) {
                return true;
}
        }
        return false;
    }