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Clyde/frontend/src/i18n.js

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/**
* Usage:
* import i18n from './i18n.js'
*
* console.log( i18n('parentcontext.childcontext.key', {user: username}) );
*
* language is loaded from cookie: lang=XX
* translations are loaded from /public/i18n/XX.txt
*
*/
import { getCookie } from './utils.js';
const default_lang = "EN";
let langs;
/**
* Fetch the translation from a key using the current language.
* could also replace certain value of the form `$variable` by providing an object
* with { variable: "value" }
* @param key :string translation key (can be null)
* @param options: Object element to replace in the translation
*
* @return :string The translated text
*/
function i18n(key, options) {
let ret = langs[key];
if(options != null){
for (let key in options) {
ret = ret.replaceAll("$" + key, options[key]);
}
}
return ret;
}
async function reloadLang(){
langs = await loadLangs();
}
reloadLang();
export default i18n;
//
// Those functions are utility functions use by previous exported functions.
//
/**
* Function that load the file with translation from the specified lang and return a dictionnary
* @param select the language to load. could be null to fetch the cookies for an answer
* if nothing is found. default to EN.txt
*/
async function loadLangs(lang){
lang = lang != null ? lang : getCookie("lang");
lang = lang != "" ? lang : default_lang;
const filename = "./i18n/" + lang.toUpperCase() + ".txt";
const content = await (await fetch(filename)).text();
const lines = content.split("\n");
let filteredLines = {};
for (let line of lines) {
if(!line.trim().startsWith("#") && line.trim() != ""){
let split = line.indexOf("=")
filteredLines[line.substr(0, split)] = line.substr(split+1, line.length);
};
}
return filteredLines;
}