egirlskey/locales/index.js

91 lines
2 KiB
JavaScript

/**
* Languages Loader
*/
import * as fs from 'node:fs';
import * as yaml from 'js-yaml';
const merge = (...args) => args.reduce((a, c) => ({
...a,
...c,
...Object.entries(a)
.filter(([k]) => c && typeof c[k] === 'object')
.reduce((a, [k, v]) => (a[k] = merge(v, c[k]), a), {})
}), {});
const languages = [
'ar-SA',
'cs-CZ',
'da-DK',
'de-DE',
'en-US',
'es-ES',
'fr-FR',
'id-ID',
'it-IT',
'ja-JP',
'ja-KS',
'kab-KAB',
'kn-IN',
'ko-KR',
'nl-NL',
'no-NO',
'pl-PL',
'pt-PT',
'ru-RU',
'sk-SK',
'th-TH',
'ug-CN',
'uk-UA',
'vi-VN',
'zh-CN',
'zh-TW',
];
const primaries = {
'en': 'US',
'ja': 'JP',
'zh': 'CN',
};
// 何故か文字列にバックスペース文字が混入することがあり、YAMLが壊れるので取り除く
//
// also, we remove the backslashes in front of open braces (the
// backslashes are only needed to tell `generateDTS.js` that the
// braces do not represent parameters)
const clean = (text) => text.replace(new RegExp(String.fromCodePoint(0x08), 'g'), '').replaceAll(new RegExp(/\\+\{/,'g'), '{');
export function build() {
const locales = languages.reduce((a, c) => (a[c] = yaml.load(clean(fs.readFileSync(new URL(`${c}.yml`, import.meta.url), 'utf-8'))) || {}, a), {});
// 空文字列が入ることがあり、フォールバックが動作しなくなるのでプロパティごと消す
const removeEmpty = (obj) => {
for (const [k, v] of Object.entries(obj)) {
if (v === '') {
delete obj[k];
} else if (typeof v === 'object') {
removeEmpty(v);
}
}
return obj;
};
removeEmpty(locales);
return Object.entries(locales)
.reduce((a, [k, v]) => (a[k] = (() => {
const [lang] = k.split('-');
switch (k) {
case 'ja-JP': return v;
case 'ja-KS':
case 'en-US': return merge(locales['ja-JP'], v);
default: return merge(
locales['ja-JP'],
locales['en-US'],
locales[`${lang}-${primaries[lang]}`] ?? {},
v
);
}
})(), a), {});
}
export default build();