89 lines
2.0 KiB
TypeScript
89 lines
2.0 KiB
TypeScript
// Copyright 2017-2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { join } from 'path';
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import { readFileSync } from 'fs';
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import { merge } from 'lodash';
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import { setupI18n } from '../ts/util/setupI18n';
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import type { LoggerType } from '../ts/types/Logging';
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import type { LocaleMessagesType } from '../ts/types/I18N';
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import type { LocalizerType } from '../ts/types/Util';
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function normalizeLocaleName(locale: string): string {
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if (/^en-/.test(locale)) {
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return 'en';
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}
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return locale;
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}
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function getLocaleMessages(locale: string): LocaleMessagesType {
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const onDiskLocale = locale.replace('-', '_');
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const targetFile = join(
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__dirname,
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'..',
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'_locales',
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onDiskLocale,
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'messages.json'
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);
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return JSON.parse(readFileSync(targetFile, 'utf-8'));
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}
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export type LocaleType = {
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i18n: LocalizerType;
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name: string;
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messages: LocaleMessagesType;
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};
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export function load({
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appLocale,
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logger,
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}: {
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appLocale: string;
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logger: Pick<LoggerType, 'error'>;
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}): LocaleType {
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if (!appLocale) {
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throw new TypeError('`appLocale` is required');
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}
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if (!logger || !logger.error) {
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throw new TypeError('`logger.error` is required');
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}
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const english = getLocaleMessages('en');
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// Load locale - if we can't load messages for the current locale, we
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// default to 'en'
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//
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// possible locales:
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// https://github.com/electron/electron/blob/master/docs/api/locales.md
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let localeName = normalizeLocaleName(appLocale);
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let messages;
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try {
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messages = getLocaleMessages(localeName);
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// We start with english, then overwrite that with anything present in locale
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messages = merge(english, messages);
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} catch (e) {
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logger.error(
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`Problem loading messages for locale ${localeName} ${e.stack}`
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);
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logger.error('Falling back to en locale');
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localeName = 'en';
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messages = english;
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}
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const i18n = setupI18n(appLocale, messages);
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return {
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i18n,
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name: localeName,
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messages,
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};
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}
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