2 var childProcess = require('child_process');
3 var execFileSync = childProcess.execFileSync;
4 var lcid = require('lcid');
5 var defaultOpts = {spawn: true};
13 function getEnvLocale(env) {
14 env = env || process.env;
15 var ret = env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE;
16 cache = getLocale(ret);
20 function parseLocale(x) {
21 var env = x.split('\n').reduce(function (env, def) {
26 return getEnvLocale(env);
29 function getLocale(str) {
30 return (str && str.replace(/[.:].*/, '')) || fallback();
33 module.exports = function (opts, cb) {
34 if (typeof opts === 'function') {
38 opts = opts || defaultOpts;
41 if (cache || getEnvLocale() || opts.spawn === false) {
42 setImmediate(cb, null, cache);
46 var getAppleLocale = function () {
47 childProcess.execFile('defaults', ['read', '-g', 'AppleLocale'], function (err, stdout) {
53 cache = stdout.trim() || fallback();
58 if (process.platform === 'win32') {
59 childProcess.execFile('wmic', ['os', 'get', 'locale'], function (err, stdout) {
65 var lcidCode = parseInt(stdout.replace('Locale', ''), 16);
66 cache = lcid.from(lcidCode) || fallback();
70 childProcess.execFile('locale', function (err, stdout) {
76 var res = parseLocale(stdout);
78 if (!res && process.platform === 'darwin') {
83 cache = getLocale(res);
89 module.exports.sync = function (opts) {
90 opts = opts || defaultOpts;
92 if (cache || getEnvLocale() || !execFileSync || opts.spawn === false) {
96 if (process.platform === 'win32') {
100 stdout = execFileSync('wmic', ['os', 'get', 'locale'], {encoding: 'utf8'});
105 var lcidCode = parseInt(stdout.replace('Locale', ''), 16);
106 cache = lcid.from(lcidCode) || fallback();
113 res = parseLocale(execFileSync('locale', {encoding: 'utf8'}));
116 if (!res && process.platform === 'darwin') {
118 cache = execFileSync('defaults', ['read', '-g', 'AppleLocale'], {encoding: 'utf8'}).trim() || fallback();
125 cache = getLocale(res);