wallet-core/extension/lib/i18n.ts
2016-02-23 19:58:16 +01:00

99 lines
2.8 KiB
TypeScript

/*
This file is part of TALER
(C) 2016 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
"use strict";
declare var i18n: any;
var jed;
var i18n_debug = false;
function init () {
if ('object' != typeof jed) {
if (!(i18n.lang in i18n.strings)) {
i18n.lang = 'en-US';
}
jed = new window['Jed'] (i18n.strings[i18n.lang]);
if (i18n_debug) {
let link = m("a[href=https://demo.taler.net]", i18n`free KUDOS`);
let amount = 5, currency = "EUR", date = new Date(), text = 'demo.taler.net';
console.log (i18n`Your balance on ${date} is ${amount} KUDO. Get more at ${text}`);
console.log (i18n.parts`Your balance on ${date} is ${amount} KUDO. Get more at ${link}`);
}
}
}
function toI18nString (strings) {
let str = '';
for (let i = 0; i < strings.length; i++) {
str += strings[i];
if (i < strings.length - 1) {
str += '%'+ (i+1) +'$s';
}
}
return str;
}
function getPluralValue (values) {
// use the first number in values to determine plural form
for (let i = 0; i < values.length; i++) {
if ('number' == typeof values[i]) {
return values[i];
}
}
return 1;
}
var i18n = <any>function i18n(strings, ...values) {
init();
let str = toI18nString (strings);
let n = getPluralValue (values);
let tr = jed.translate(str).ifPlural(n, str).fetch(...values);
if (i18n_debug) {
console.log('i18n:', 'n: ', n, 'strings:', strings, 'values:', values);
console.log('i18n:', 'str:', str);
console.log('i18n:', 'tr:', tr);
}
return tr;
};
i18n.lang = chrome.i18n.getUILanguage();
i18n.strings = {};
// Interpolate i18nized values with arbitrary objects and
// return array of strings/objects.
i18n.parts = function(strings, ...values) {
init();
let str = toI18nString (strings);
let n = getPluralValue (values);
let tr = jed.ngettext(str, str, n).split(/%(\d+)\$s/);
let parts = [];
for (let i = 0; i < tr.length; i++) {
if (0 == i % 2) {
parts.push(tr[i]);
} else {
parts.push(values[parseInt(tr[i]) - 1]);
}
}
if (i18n_debug) {
console.log('i18n.parts:', 'n: ', n, 'strings:', strings, 'values:', values);
console.log('i18n.parts:', 'str:', str);
console.log('i18n.parts:', 'parts:', parts);
}
return parts;
};