toLocale function

Locale toLocale(String? locale)

Parses an underscore-separated locale string (e.g. en_US, zh_Hans_CN) into a Locale. Returns en_US when locale is null, empty, or fails to parse.

Implementation

Locale toLocale(String? locale) {
  const defaultLocale = Locale('en', 'US');

  if (locale == null || locale.isEmpty) {
    return defaultLocale;
  }

  try {
    final parts = locale.split('_');
    switch (parts.length) {
      case 1:
        return Locale(parts[0]);
      case 2:
        return Locale(parts[0], parts[1]);
      default:
        return Locale.fromSubtags(
          languageCode: parts[0],
          scriptCode: parts.length > 1 ? parts[1] : null,
          countryCode: parts.length > 2 ? parts[2] : null,
        );
    }
  } catch (e) {
    return defaultLocale;
  }
}