128 lines
2.6 KiB
JavaScript
128 lines
2.6 KiB
JavaScript
'use strict';
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var childProcess = require('child_process');
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var execFileSync = childProcess.execFileSync;
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var lcid = require('lcid');
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var defaultOpts = {spawn: true};
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var cache;
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function fallback() {
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cache = 'en_US';
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return cache;
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}
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function getEnvLocale(env) {
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env = env || process.env;
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var ret = env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE;
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cache = getLocale(ret);
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return ret;
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}
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function parseLocale(x) {
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var env = x.split('\n').reduce(function (env, def) {
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def = def.split('=');
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env[def[0]] = def[1];
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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(str) {
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return (str && str.replace(/[.:].*/, '')) || fallback();
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}
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module.exports = function (opts, cb) {
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if (typeof opts === 'function') {
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cb = opts;
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opts = defaultOpts;
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} else {
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opts = opts || defaultOpts;
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}
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if (cache || getEnvLocale() || opts.spawn === false) {
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setImmediate(cb, null, cache);
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return;
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}
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var getAppleLocale = function () {
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childProcess.execFile('defaults', ['read', '-g', 'AppleLocale'], function (err, stdout) {
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if (err) {
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fallback();
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return;
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}
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cache = stdout.trim() || fallback();
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cb(null, cache);
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});
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};
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if (process.platform === 'win32') {
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childProcess.execFile('wmic', ['os', 'get', 'locale'], function (err, stdout) {
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if (err) {
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fallback();
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return;
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}
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var lcidCode = parseInt(stdout.replace('Locale', ''), 16);
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cache = lcid.from(lcidCode) || fallback();
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cb(null, cache);
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});
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} else {
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childProcess.execFile('locale', function (err, stdout) {
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if (err) {
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fallback();
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return;
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}
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var res = parseLocale(stdout);
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if (!res && process.platform === 'darwin') {
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getAppleLocale();
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return;
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}
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cache = getLocale(res);
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cb(null, cache);
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});
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}
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};
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module.exports.sync = function (opts) {
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opts = opts || defaultOpts;
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if (cache || getEnvLocale() || !execFileSync || opts.spawn === false) {
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return cache;
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}
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if (process.platform === 'win32') {
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var stdout;
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try {
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stdout = execFileSync('wmic', ['os', 'get', 'locale'], {encoding: 'utf8'});
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} catch (err) {
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return fallback();
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}
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var lcidCode = parseInt(stdout.replace('Locale', ''), 16);
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cache = lcid.from(lcidCode) || fallback();
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return cache;
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}
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var res;
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try {
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res = parseLocale(execFileSync('locale', {encoding: 'utf8'}));
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} catch (err) {}
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if (!res && process.platform === 'darwin') {
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try {
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cache = execFileSync('defaults', ['read', '-g', 'AppleLocale'], {encoding: 'utf8'}).trim() || fallback();
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return cache;
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} catch (err) {
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return fallback();
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}
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}
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cache = getLocale(res);
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return cache;
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};
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