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/*
This file is part of GNU Taler
(C) 2020 Taler Systems S.A.
GNU 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.
GNU 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
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Convert a <lang>.po file into a JavaScript / TypeScript expression.
*/
// @ts-ignore
import * as po2jsonLib from "po2json";
import * as fs from "fs";
import glob = require("glob");
//types defined by the po2json library
type Header = {
domain: string;
lang: string;
'plural_forms': string;
};
type MessagesType = Record<string, undefined | Array<string>> & { "": Header }
interface pojsonType {
// X-Domain or 'messages'
domain: string;
locale_data: {
messages: MessagesType
}
}
// ----------- end pf po2json
interface StringsType {
// X-Domain or 'messages'
domain: string;
lang: string;
completeness: number,
'plural_forms': string;
locale_data: {
messages: Record<string, undefined | Array<string>>
}
}
// This prelude match the types above
const TYPES_FOR_STRING_PRELUDE = `
export interface StringsType {
domain: string;
lang: string;
completeness: number;
'plural_forms': string;
locale_data: {
messages: Record<string, unknown>;
};
};
`;
const DEFAULT_STRING_PRELUDE = `${TYPES_FOR_STRING_PRELUDE}export const strings: Record<string,StringsType> = {};\n\n`
export function po2ts(): void {
const files = glob.sync("src/i18n/*.po");
if (files.length === 0) {
console.error("no .po files found in src/i18n/");
process.exit(1);
}
console.log(files);
let prelude: string;
try {
prelude = fs.readFileSync("src/i18n/strings-prelude", "utf-8")
} catch (e) {
prelude = DEFAULT_STRING_PRELUDE
}
const chunks = [prelude];
for (const filename of files) {
const m = filename.match(/([a-zA-Z0-9-_]+).po/);
if (!m) {
console.error("error: unexpected filename (expected <lang>.po)");
process.exit(1);
}
const lang = m[1];
const poAsJson: pojsonType = po2jsonLib.parseFileSync(filename, {
format: "jed1.x",
fuzzy: true,
});
const header = poAsJson.locale_data.messages[""]
const total = calculateTotalTranslations(poAsJson.locale_data.messages)
const completeness =
header.lang === "en"
? 100 // 'en' is always complete
: Math.floor(total.translations * 100 / total.keys);
const strings: StringsType = {
locale_data: poAsJson.locale_data,
domain: poAsJson.domain,
plural_forms: header.plural_forms,
lang: header.lang,
completeness,
}
const value = JSON.stringify(strings, undefined, 2)
const s = `strings['${lang}'] = ${value};\n\n`
chunks.push(s);
}
const tsContents = chunks.join("");
fs.writeFileSync("src/i18n/strings.ts", tsContents);
}
function calculateTotalTranslations(msgs: MessagesType): { keys: number, translations: number } {
const kv = Object.entries(msgs)
const [keys, translations] = kv.reduce(([total, withTranslation], translation) => {
if (!translation || translation.length !== 2 || !translation[1]) {
//current key is empty
return [total, withTranslation]
}
const v = translation[1]
if (!Array.isArray(v)) {
// this is not a translation
return [total, withTranslation]
}
if (!v.length || !v[0].length) {
//translation is missing
return [total + 1, withTranslation]
}
//current key has a translation
return [total + 1, withTranslation + 1]
}, [0, 0])
return { keys, translations }
}
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