modules/i18n.js
/**
The i18n module, loads the language files and initializes i18next
@module i18n
*/
const fs = require('fs');
const i18n = require('i18next');
const extend = require('lodash/extend');
let i18nConf = fs.readFileSync(`${__dirname}/../interface/project-tap.i18n`);
i18nConf = JSON.parse(i18nConf);
const resources = {
dev: { translation: require('../interface/i18n/mist.en.i18n.json') }
};
// add supported languages
i18nConf.supported_languages.forEach(lang => {
const mistTranslations = require(`../interface/i18n/mist.${lang}.i18n.json`);
const uiTranslations = require(`../interface/i18n/app.${lang}.i18n.json`);
resources[lang] = { translation: extend(mistTranslations, uiTranslations) };
});
/**
* Given a language code, get best matched code from supported languages.
*
* > getBestMatchedLangCode('en-US')
* 'en'
* > getBestMatchedLangCode('zh-TW')
* 'zh-TW'
* > getBestMatchedLangCode('no-such-code')
* 'en'
*/
i18n.getBestMatchedLangCode = langCode => {
const codeList = Object.keys(resources);
let bestMatchedCode = langCode;
if (codeList.indexOf(langCode) === -1) {
if (codeList.indexOf(langCode.substr(0, 2)) > -1) {
bestMatchedCode = langCode.substr(0, 2);
} else {
bestMatchedCode = 'en';
}
}
return bestMatchedCode;
};
// init i18n
i18n.init({
lng: global.language || 'en',
resources,
interpolation: { prefix: '__', suffix: '__' }
});
module.exports = i18n;