fox-send/build/fluent_loader.js

64 lines
1.7 KiB
JavaScript

// TODO: when node supports 'for await' we can remove babel-polyfill
// and use 'fluent' instead of 'fluent/compat' (also below near line 42)
require('babel-polyfill');
const { MessageContext } = require('fluent/compat');
const fs = require('fs');
function toJSON(map) {
return JSON.stringify(Array.from(map));
}
function merge(m1, m2) {
const result = new Map(m1);
for (const [k, v] of m2) {
result.set(k, v);
}
return result;
}
module.exports = function(source) {
const localeExp = /([^/]+)\/[^/]+\.ftl$/;
const result = localeExp.exec(this.resourcePath);
const locale = result && result[1];
if (!locale) {
throw new Error(`couldn't find locale in: ${this.resourcePath}`);
}
// load default language and "merge" contexts
// TODO: make this configurable
const en_ftl = fs.readFileSync(
require.resolve('../public/locales/en-US/send.ftl'),
'utf8'
);
const en = new MessageContext('en-US');
en.addMessages(en_ftl);
// pre-parse the ftl
const context = new MessageContext(locale);
context.addMessages(source);
const merged = merge(en._messages, context._messages);
return `
module.exports = \`
if (typeof window === 'undefined') {
require('babel-polyfill');
var fluent = require('fluent/compat');
}
(function () {
var ctx = new fluent.MessageContext('${locale}', {useIsolating: false});
ctx._messages = new Map(${toJSON(merged)});
function translate(id, data) {
var msg = ctx.getMessage(id);
if (typeof(msg) !== 'string' && !msg.val && msg.attrs) {
msg = msg.attrs.title || msg.attrs.alt
}
return ctx.format(msg, data);
}
if (typeof window === 'undefined') {
module.exports = translate;
}
else {
window.translate = translate;
}
})();
\``;
};