sanitizeLocale function

String sanitizeLocale(String locale, { bool throwOnError = false, bool verbose = true, })

Implementation

String sanitizeLocale(String locale,
    {bool throwOnError = false, bool verbose = true}) {
  if (_sanitizeLocaleCached[locale] != null) {
    return _sanitizeLocaleCached[locale]!;
  }
  var originalLocale = locale;

  /// ISO-639 codes
  locale = locale.replaceAll('_', '-');
  if (locale.contains('-')) {
    if (kLangIsoAllowed.contains(locale.toLowerCase())) {
      _sanitizeLocaleCached[originalLocale] = locale;
      return locale;
    }
    final lang = locale.split('-')[0];
    if (lang.length < 2 || lang.length > 3) {
      if (throwOnError) {
        throw 'Invalid language code "$locale"';
      } else {
        return lang;
      }
    }
    final keys = kGoogleLanguages.keys;
    if (!keys.contains(lang)) {
      if (throwOnError) {
        throw 'Invalid language code for GoogleTranslate "$locale"';
      } else {
        return lang;
      }
    }
    if (verbose) {
      trace('Using code ISO-639 "$lang" for locale "$originalLocale"');
    }
    _sanitizeLocaleCached[originalLocale] = lang;
    return lang;
  }
  _sanitizeLocaleCached[originalLocale] = locale;
  return locale;
}