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node_modules.bundled
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osenv
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Filename :
osenv.js
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var isWindows = process.platform === 'win32' var path = require('path') var exec = require('child_process').exec var osTmpdir = require('os-tmpdir') var osHomedir = require('os-homedir') // looking up envs is a bit costly. // Also, sometimes we want to have a fallback // Pass in a callback to wait for the fallback on failures // After the first lookup, always returns the same thing. function memo (key, lookup, fallback) { var fell = false var falling = false exports[key] = function (cb) { var val = lookup() if (!val && !fell && !falling && fallback) { fell = true falling = true exec(fallback, function (er, output, stderr) { falling = false if (er) return // oh well, we tried val = output.trim() }) } exports[key] = function (cb) { if (cb) process.nextTick(cb.bind(null, null, val)) return val } if (cb && !falling) process.nextTick(cb.bind(null, null, val)) return val } } memo('user', function () { return ( isWindows ? process.env.USERDOMAIN + '\\' + process.env.USERNAME : process.env.USER ) }, 'whoami') memo('prompt', function () { return isWindows ? process.env.PROMPT : process.env.PS1 }) memo('hostname', function () { return isWindows ? process.env.COMPUTERNAME : process.env.HOSTNAME }, 'hostname') memo('tmpdir', function () { return osTmpdir() }) memo('home', function () { return osHomedir() }) memo('path', function () { return (process.env.PATH || process.env.Path || process.env.path).split(isWindows ? ';' : ':') }) memo('editor', function () { return process.env.EDITOR || process.env.VISUAL || (isWindows ? 'notepad.exe' : 'vi') }) memo('shell', function () { return isWindows ? process.env.ComSpec || 'cmd' : process.env.SHELL || 'bash' })