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node_modules/os-locale/index.js 2.25 KB
ce4c83ff   wxy   初始提交
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  'use strict';
  const execa = require('execa');
  const lcid = require('lcid');
  const mem = require('mem');
  
  const defaultOpts = {spawn: true};
  const defaultLocale = 'en_US';
  
  function getEnvLocale(env) {
  	env = env || process.env;
  	return env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE;
  }
  
  function parseLocale(x) {
  	const env = x.split('\n').reduce((env, def) => {
  		def = def.split('=');
  		env[def[0]] = def[1].replace(/^"|"$/g, '');
  		return env;
  	}, {});
  	return getEnvLocale(env);
  }
  
  function getLocale(str) {
  	return (str && str.replace(/[.:].*/, ''));
  }
  
  function getAppleLocale() {
  	return execa.stdout('defaults', ['read', '-g', 'AppleLocale']);
  }
  
  function getAppleLocaleSync() {
  	return execa.sync('defaults', ['read', '-g', 'AppleLocale']).stdout;
  }
  
  function getUnixLocale() {
  	if (process.platform === 'darwin') {
  		return getAppleLocale();
  	}
  
  	return execa.stdout('locale')
  		.then(stdout => getLocale(parseLocale(stdout)));
  }
  
  function getUnixLocaleSync() {
  	if (process.platform === 'darwin') {
  		return getAppleLocaleSync();
  	}
  
  	return getLocale(parseLocale(execa.sync('locale').stdout));
  }
  
  function getWinLocale() {
  	return execa.stdout('wmic', ['os', 'get', 'locale'])
  		.then(stdout => {
  			const lcidCode = parseInt(stdout.replace('Locale', ''), 16);
  			return lcid.from(lcidCode);
  		});
  }
  
  function getWinLocaleSync() {
  	const stdout = execa.sync('wmic', ['os', 'get', 'locale']).stdout;
  	const lcidCode = parseInt(stdout.replace('Locale', ''), 16);
  	return lcid.from(lcidCode);
  }
  
  module.exports = mem(opts => {
  	opts = opts || defaultOpts;
  	const envLocale = getEnvLocale();
  	let thenable;
  
  	if (envLocale || opts.spawn === false) {
  		thenable = Promise.resolve(getLocale(envLocale));
  	} else if (process.platform === 'win32') {
  		thenable = getWinLocale();
  	} else {
  		thenable = getUnixLocale();
  	}
  
  	return thenable.then(locale => locale || defaultLocale)
  		.catch(() => defaultLocale);
  });
  
  module.exports.sync = mem(opts => {
  	opts = opts || defaultOpts;
  	const envLocale = getEnvLocale();
  	let res;
  
  	if (envLocale || opts.spawn === false) {
  		res = getLocale(envLocale);
  	} else {
  		try {
  			if (process.platform === 'win32') {
  				res = getWinLocaleSync();
  			} else {
  				res = getUnixLocaleSync();
  			}
  		} catch (err) {}
  	}
  
  	return res || defaultLocale;
  });