ad7ef112fc
Complete and revise every shipped locale against the current English source, preserve locale-specific plurals, and map script-specific Chinese locales through device, Intl, duration, and Plex boundaries. Co-authored-by: emgeje <mgj@mgj.hu> Co-authored-by: junyou1998 <junyou1998@gmail.com>
44 lines
1.5 KiB
Dart
44 lines
1.5 KiB
Dart
import 'package:flutter/widgets.dart';
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import 'strings.g.dart';
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/// Resolves device locales in preference order while preserving Chinese script.
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///
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/// Slang's generic resolver cannot disambiguate `zh` and `zh-Hant` after an
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/// exact script-and-region miss, so common Traditional Chinese device tags need
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/// an application-owned canonicalization step.
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AppLocale resolvePreferredAppLocale(Iterable<Locale> preferredLocales) {
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for (final locale in preferredLocales) {
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final resolved = _resolveChineseLocale(locale) ?? AppLocaleUtils.parse(locale.toLanguageTag());
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if (resolved != AppLocale.en || locale.languageCode == AppLocale.en.languageCode) return resolved;
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}
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return AppLocale.en;
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}
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AppLocale? _resolveChineseLocale(Locale locale) {
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if (locale.languageCode.toLowerCase() != 'zh') return null;
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switch (locale.scriptCode?.toLowerCase()) {
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case 'hant':
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return AppLocale.zhHant;
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case 'hans':
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return AppLocale.zh;
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}
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return switch (locale.countryCode?.toUpperCase()) {
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'TW' || 'HK' || 'MO' => AppLocale.zhHant,
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_ => AppLocale.zh,
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};
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}
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extension AppLocaleExternalFormats on AppLocale {
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/// Locale name accepted by `package:intl`.
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String get intlLocaleName => this == AppLocale.zhHant ? 'zh_TW' : languageCode;
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/// Locale name accepted by `package:duration`.
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String get durationLocaleName => this == AppLocale.zhHant ? 'zh_Hant' : languageCode;
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/// Locale identifier sent in Plex request headers.
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String get plexLanguageCode => this == AppLocale.zhHant ? 'zh-TW' : languageCode;
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}
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