45 lines
1.6 KiB
TypeScript
45 lines
1.6 KiB
TypeScript
/*
|
|
* Copyright (C) 2026 Fluxer Contributors
|
|
*
|
|
* This file is part of Fluxer.
|
|
*
|
|
* Fluxer is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Fluxer is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
import {hasLocaleFile} from '@fluxer/i18n/src/io/LocaleFilePath';
|
|
import type {I18nState} from '@fluxer/i18n/src/runtime/I18nTypes';
|
|
|
|
export function getEffectiveLocale<TKey extends string, TValue, TVariables>(
|
|
state: I18nState<TKey, TValue, TVariables>,
|
|
locale: string | null | undefined,
|
|
): string {
|
|
if (!locale) {
|
|
return state.config.defaultLocale;
|
|
}
|
|
|
|
const normalizeLocale = state.config.normalizeLocale ?? ((locale: string) => locale);
|
|
const normalizedLocale = normalizeLocale(locale);
|
|
|
|
if (normalizedLocale === state.config.defaultLocale) {
|
|
return state.config.defaultLocale;
|
|
}
|
|
|
|
if (!hasLocaleFile(normalizedLocale, state.config.localesPath, state.config.defaultLocale)) {
|
|
state.config.onWarning?.(`Unsupported locale, falling back to ${state.config.defaultLocale}: ${locale}`);
|
|
return state.config.defaultLocale;
|
|
}
|
|
|
|
return normalizedLocale;
|
|
}
|