128 lines
3 KiB
JavaScript
128 lines
3 KiB
JavaScript
'use strict';
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const execa = require('execa');
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const lcid = require('lcid');
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const mem = require('mem');
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const defaultOptions = {spawn: true};
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const defaultLocale = 'en-US';
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async function getStdOut(command, args) {
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return (await execa(command, args)).stdout;
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}
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function getStdOutSync(command, args) {
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return execa.sync(command, args).stdout;
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}
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function getEnvLocale(env = process.env) {
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return env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE;
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}
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function parseLocale(string) {
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const env = string.split('\n').reduce((env, definition) => {
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const [key, value] = definition.split('=');
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env[key] = value.replace(/^"|"$/g, '');
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return env;
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}, {});
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return getEnvLocale(env);
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}
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function getLocale(string) {
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return (string && string.replace(/[.:].*/, ''));
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}
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async function getLocales() {
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return getStdOut('locale', ['-a']);
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}
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function getLocalesSync() {
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return getStdOutSync('locale', ['-a']);
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}
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function getSupportedLocale(locale, locales = '') {
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return locales.includes(locale) ? locale : defaultLocale;
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}
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async function getAppleLocale() {
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const results = await Promise.all([
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getStdOut('defaults', ['read', '-globalDomain', 'AppleLocale']),
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getLocales()
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]);
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return getSupportedLocale(results[0], results[1]);
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}
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function getAppleLocaleSync() {
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return getSupportedLocale(
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getStdOutSync('defaults', ['read', '-globalDomain', 'AppleLocale']),
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getLocalesSync()
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);
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}
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async function getUnixLocale() {
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return getLocale(parseLocale(await getStdOut('locale')));
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}
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function getUnixLocaleSync() {
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return getLocale(parseLocale(getStdOutSync('locale')));
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}
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async function getWinLocale() {
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const stdout = await getStdOut('wmic', ['os', 'get', 'locale']);
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const lcidCode = parseInt(stdout.replace('Locale', ''), 16);
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return lcid.from(lcidCode);
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}
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function getWinLocaleSync() {
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const stdout = getStdOutSync('wmic', ['os', 'get', 'locale']);
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const lcidCode = parseInt(stdout.replace('Locale', ''), 16);
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return lcid.from(lcidCode);
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}
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function normalise(input) {
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return input.replace(/_/, '-');
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}
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const osLocale = mem(async (options = defaultOptions) => {
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let locale;
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try {
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const envLocale = getEnvLocale();
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if (envLocale || options.spawn === false) {
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locale = getLocale(envLocale);
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} else if (process.platform === 'win32') {
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locale = await getWinLocale();
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} else if (process.platform === 'darwin') {
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locale = await getAppleLocale();
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} else {
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locale = await getUnixLocale();
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}
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} catch (_) {}
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return normalise(locale || defaultLocale);
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}, {cachePromiseRejection: false});
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module.exports = osLocale;
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module.exports.sync = mem((options = defaultOptions) => {
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let locale;
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try {
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const envLocale = getEnvLocale();
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if (envLocale || options.spawn === false) {
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locale = getLocale(envLocale);
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} else if (process.platform === 'win32') {
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locale = getWinLocaleSync();
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} else if (process.platform === 'darwin') {
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locale = getAppleLocaleSync();
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} else {
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locale = getUnixLocaleSync();
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}
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} catch (_) {}
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return normalise(locale || defaultLocale);
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});
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