Desktop: Add support for OCR (#8975)

packages/lib/locale.ts

@@ -182,6 +182,174 @@ codeToLanguage_['et'] = 'Eesti Keel';
 codeToLanguage_['vi'] = 'Tiếng Việt';
 codeToLanguage_['hu'] = 'Magyar';
 
+const iso639Map_ = [
+	['aar', 'aa'],
+	['abk', 'ab'],
+	['afr', 'af'],
+	['aka', 'ak'],
+	['amh', 'am'],
+	['ara', 'ar'],
+	['arg', 'an'],
+	['asm', 'as'],
+	['ava', 'av'],
+	['ave', 'ae'],
+	['aym', 'ay'],
+	['aze', 'az'],
+	['bak', 'ba'],
+	['bam', 'bm'],
+	['bel', 'be'],
+	['ben', 'bn'],
+	['bih', 'bh'],
+	['bis', 'bi'],
+	['bos', 'bs'],
+	['bre', 'br'],
+	['bul', 'bg'],
+	['cat', 'ca'],
+	['cha', 'ch'],
+	['che', 'ce'],
+	['chu', 'cu'],
+	['chv', 'cv'],
+	['cor', 'kw'],
+	['cos', 'co'],
+	['cre', 'cr'],
+	['dan', 'da'],
+	['div', 'dv'],
+	['dzo', 'dz'],
+	['eng', 'en'],
+	['epo', 'eo'],
+	['est', 'et'],
+	['ewe', 'ee'],
+	['fao', 'fo'],
+	['fij', 'fj'],
+	['fin', 'fi'],
+	['fra', 'fr'],
+	['fry', 'fy'],
+	['ful', 'ff'],
+	['gla', 'gd'],
+	['gle', 'ga'],
+	['glg', 'gl'],
+	['glv', 'gv'],
+	['grn', 'gn'],
+	['guj', 'gu'],
+	['hat', 'ht'],
+	['hau', 'ha'],
+	['heb', 'he'],
+	['her', 'hz'],
+	['hin', 'hi'],
+	['hmo', 'ho'],
+	['hrv', 'hr'],
+	['hun', 'hu'],
+	['ibo', 'ig'],
+	['ido', 'io'],
+	['iii', 'ii'],
+	['iku', 'iu'],
+	['ile', 'ie'],
+	['ina', 'ia'],
+	['ind', 'id'],
+	['ipk', 'ik'],
+	['ita', 'it'],
+	['jav', 'jv'],
+	['jpn', 'ja'],
+	['kal', 'kl'],
+	['kan', 'kn'],
+	['kas', 'ks'],
+	['kau', 'kr'],
+	['kaz', 'kk'],
+	['khm', 'km'],
+	['kik', 'ki'],
+	['kin', 'rw'],
+	['kir', 'ky'],
+	['kom', 'kv'],
+	['kon', 'kg'],
+	['kor', 'ko'],
+	['kua', 'kj'],
+	['kur', 'ku'],
+	['lao', 'lo'],
+	['lat', 'la'],
+	['lav', 'lv'],
+	['lim', 'li'],
+	['lin', 'ln'],
+	['lit', 'lt'],
+	['ltz', 'lb'],
+	['lub', 'lu'],
+	['lug', 'lg'],
+	['mah', 'mh'],
+	['mal', 'ml'],
+	['mar', 'mr'],
+	['mlg', 'mg'],
+	['mlt', 'mt'],
+	['mon', 'mn'],
+	['nau', 'na'],
+	['nav', 'nv'],
+	['nbl', 'nr'],
+	['nde', 'nd'],
+	['ndo', 'ng'],
+	['nep', 'ne'],
+	['nno', 'nn'],
+	['nob', 'nb'],
+	['nor', 'no'],
+	['nya', 'ny'],
+	['oci', 'oc'],
+	['oji', 'oj'],
+	['ori', 'or'],
+	['orm', 'om'],
+	['oss', 'os'],
+	['pan', 'pa'],
+	['pli', 'pi'],
+	['pol', 'pl'],
+	['por', 'pt'],
+	['pus', 'ps'],
+	['que', 'qu'],
+	['roh', 'rm'],
+	['run', 'rn'],
+	['rus', 'ru'],
+	['sag', 'sg'],
+	['san', 'sa'],
+	['sin', 'si'],
+	['slv', 'sl'],
+	['sme', 'se'],
+	['smo', 'sm'],
+	['sna', 'sn'],
+	['snd', 'sd'],
+	['som', 'so'],
+	['sot', 'st'],
+	['spa', 'es'],
+	['srd', 'sc'],
+	['srp', 'sr'],
+	['ssw', 'ss'],
+	['sun', 'su'],
+	['swa', 'sw'],
+	['swe', 'sv'],
+	['tah', 'ty'],
+	['tam', 'ta'],
+	['tat', 'tt'],
+	['tel', 'te'],
+	['tgk', 'tg'],
+	['tgl', 'tl'],
+	['tha', 'th'],
+	['tir', 'ti'],
+	['ton', 'to'],
+	['tsn', 'tn'],
+	['tso', 'ts'],
+	['tuk', 'tk'],
+	['tur', 'tr'],
+	['twi', 'tw'],
+	['uig', 'ug'],
+	['ukr', 'uk'],
+	['urd', 'ur'],
+	['uzb', 'uz'],
+	['ven', 've'],
+	['vie', 'vi'],
+	['vol', 'vo'],
+	['wln', 'wa'],
+	['wol', 'wo'],
+	['xho', 'xh'],
+	['yid', 'yi'],
+	['yor', 'yo'],
+	['zha', 'za'],
+	['zul', 'zu'],
+];
+
 const codeToCountry_: CodeToCountryMap = {
 	AD: ['Andorra', 'Andorra'],
 	AE: ['United Arab Emirates', 'دولة الإمارات العربيّة المتّحدة'],
@@ -624,6 +792,16 @@ function localesFromLanguageCode(languageCode: string, locales: string[]): strin
 	});
 }
 
+export const toIso639 = (code: string) => {
+	if (code.includes('_')) {
+		const s = code.split('_');
+		code = s[0];
+	}
+	const line = iso639Map_.find(l => l[1] === code);
+	if (!line) throw new Error(`Cannot convert to ISO-639 code: ${code}`);
+	return line[0];
+};
+
 function _(s: string, ...args: any[]): string {
 	return stringByLocale(currentLocale_, s, ...args);
 }