99 lines
2.2 KiB
JavaScript
99 lines
2.2 KiB
JavaScript
/**
|
|
* the default language to use
|
|
*
|
|
* @var {string}
|
|
* @author svartoyg
|
|
*/
|
|
var _languageDefault = null;
|
|
|
|
|
|
/**
|
|
* the fallback language to use
|
|
*
|
|
* @var {string}
|
|
* @author svartoyg
|
|
*/
|
|
var _languageFallback = null;
|
|
|
|
|
|
/**
|
|
* two level map with ISO-639-1 code as first key and translation id as second key
|
|
*
|
|
* @var {Map<string,Map<string,string>>}
|
|
* @author svartoyg
|
|
*/
|
|
var _data = {};
|
|
|
|
|
|
/**
|
|
* @param {string} language
|
|
* @return Promise<Map<string,string>>
|
|
* @author svartoyg
|
|
*/
|
|
async function retrieveData (language) {
|
|
let json
|
|
try {
|
|
json = (await import(`../loc/${language}.json`)).default
|
|
} catch (exception) {
|
|
json = (await import(`../loc/${language.substr(0, language.indexOf('-'))}.json`)).default
|
|
}
|
|
const map = {}
|
|
flatten(json, '', map)
|
|
return map
|
|
}
|
|
|
|
function flatten (tree, prefix, result) {
|
|
for (const [key, value] of Object.entries(tree)) {
|
|
if (typeof value === 'string') {
|
|
result[prefix + key] = value
|
|
} else {
|
|
flatten(value, prefix + key + '.', result)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {string} languageDefault
|
|
* @param {string} [languageFallback]
|
|
* @author svartoyg
|
|
*/
|
|
export async function initialize (languageDefault, languageFallback = 'en') {
|
|
_languageFallback = languageFallback;
|
|
_languageDefault = languageDefault;
|
|
for (const language of [_languageFallback, _languageDefault]) {
|
|
if (_data.hasOwnProperty(language)) continue;
|
|
console.log('--', 'loading localization data for language "' + language + '" ...');
|
|
let data;
|
|
try {
|
|
data = await retrieveData(language);
|
|
} catch (exception) {
|
|
console.warn(exception.toString());
|
|
}
|
|
_data[language] = data;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* gets a translation by its key for a specific language
|
|
*
|
|
* @param {string} key
|
|
* @param {string} [languageChosen]
|
|
* @return {string}
|
|
* @author svartoyg
|
|
*/
|
|
export function translate (key, languageChosen = _languageDefault) {
|
|
let result = undefined;
|
|
for (const language of [languageChosen, _languageFallback]) {
|
|
if (_data.hasOwnProperty(language) && (_data[language] !== undefined) && _data[language].hasOwnProperty(key)) {
|
|
result = _data[language][key];
|
|
break;
|
|
}
|
|
}
|
|
if (result === undefined) {
|
|
result = ('{{' + key + '}}');
|
|
}
|
|
return result;
|
|
}
|
|
|