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nodebb/src/languages.js

77 lines
2.0 KiB
JavaScript

'use strict';
const fs = require('fs');
const path = require('path');
const utils = require('./utils');
const paths = require('./constants').paths;
const Languages = module.exports;
const languagesPath = path.join(__dirname, '../build/public/language');
const files = fs.readdirSync(path.join(paths.nodeModules, '/timeago/locales'));
Languages.timeagoCodes = files.filter(f => f.startsWith('jquery.timeago')).map(f => f.split('.')[2]);
Languages.get = async function (language, namespace) {
const data = await fs.promises.readFile(path.join(languagesPath, language, namespace + '.json'), 'utf8');
return JSON.parse(data) || {};
};
let codeCache = null;
Languages.listCodes = async function () {
if (codeCache && codeCache.length) {
return codeCache;
}
try {
const file = await fs.promises.readFile(path.join(languagesPath, 'metadata.json'), 'utf8');
const parsed = JSON.parse(file);
codeCache = parsed.languages;
return parsed.languages;
} catch (err) {
if (err.code === 'ENOENT') {
return [];
}
throw err;
}
};
let listCache = null;
Languages.list = async function () {
if (listCache && listCache.length) {
return listCache;
}
const codes = await Languages.listCodes();
let languages = await Promise.all(codes.map(async function (folder) {
try {
const configPath = path.join(languagesPath, folder, 'language.json');
const file = await fs.promises.readFile(configPath, 'utf8');
const lang = JSON.parse(file);
return lang;
} catch (err) {
if (err.code === 'ENOENT') {
return;
}
throw err;
}
}));
// filter out invalid ones
languages = languages.filter(lang => lang && lang.code && lang.name && lang.dir);
listCache = languages;
return languages;
};
Languages.userTimeagoCode = async function (userLang) {
const languageCodes = await Languages.listCodes();
const timeagoCode = utils.userLangToTimeagoCode(userLang);
if (languageCodes.includes(userLang) && Languages.timeagoCodes.includes(timeagoCode)) {
return timeagoCode;
}
return '';
};
require('./promisify')(Languages);