| 'use strict'; |
| |
| var fs = require('fs'); |
| var parse = require('parse-passwd'); |
| |
| function homedir() { |
| // The following logic is from looking at logic used in the different platform |
| // versions of the uv_os_homedir function found in https://github.com/libuv/libuv |
| // This is the function used in modern versions of node.js |
| |
| if (process.platform === 'win32') { |
| // check the USERPROFILE first |
| if (process.env.USERPROFILE) { |
| return process.env.USERPROFILE; |
| } |
| |
| // check HOMEDRIVE and HOMEPATH |
| if (process.env.HOMEDRIVE && process.env.HOMEPATH) { |
| return process.env.HOMEDRIVE + process.env.HOMEPATH; |
| } |
| |
| // fallback to HOME |
| if (process.env.HOME) { |
| return process.env.HOME; |
| } |
| |
| return null; |
| } |
| |
| // check HOME environment variable first |
| if (process.env.HOME) { |
| return process.env.HOME; |
| } |
| |
| // on linux platforms (including OSX) find the current user and get their homedir from the /etc/passwd file |
| var passwd = tryReadFileSync('/etc/passwd'); |
| var home = find(parse(passwd), getuid()); |
| if (home) { |
| return home; |
| } |
| |
| // fallback to using user environment variables |
| var user = process.env.LOGNAME || process.env.USER || process.env.LNAME || process.env.USERNAME; |
| |
| if (!user) { |
| return null; |
| } |
| |
| if (process.platform === 'darwin') { |
| return '/Users/' + user; |
| } |
| |
| return '/home/' + user; |
| } |
| |
| function find(arr, uid) { |
| var len = arr.length; |
| for (var i = 0; i < len; i++) { |
| if (+arr[i].uid === uid) { |
| return arr[i].homedir; |
| } |
| } |
| } |
| |
| function getuid() { |
| if (typeof process.geteuid === 'function') { |
| return process.geteuid(); |
| } |
| return process.getuid(); |
| } |
| |
| function tryReadFileSync(fp) { |
| try { |
| return fs.readFileSync(fp, 'utf8'); |
| } catch (err) { |
| return ''; |
| } |
| } |
| |
| module.exports = homedir; |
| |