74 lines
2.3 KiB
JavaScript
74 lines
2.3 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var ENV = require( '@stdlib/process/env' );
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var IS_WINDOWS = require( '@stdlib/assert/is-windows' );
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var PLATFORM = require( './../../platform' );
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var getuid = require( '@stdlib/process/getuid' );
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// MAIN //
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/**
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* Returns the current user's home directory.
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*
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* @returns {(string|null)} home directory
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*
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* @example
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* var home = homedir();
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* // e.g., returns '/Users/<username>'
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*/
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function homedir() {
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var home;
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var user;
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if ( IS_WINDOWS ) {
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// https://github.com/libuv/libuv/blob/764877fd9e4ea67c0cbe27bf81b2b294ed33b0f5/src/win/util.c#L1170
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// https://en.wikipedia.org/wiki/Environment_variable#Windows
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home = ENV[ 'USERPROFILE' ] || ENV[ 'HOMEDRIVE' ]+ENV[ 'HOMEPATH' ] || ENV[ 'HOME' ];
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return ( home ) ? home : null; // eslint-disable-line no-unneeded-ternary
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}
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// https://github.com/libuv/libuv/blob/9fbcca048181b927cfcdb5c6c49e5bdff173aad5/src/unix/core.c#L1030
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home = ENV[ 'HOME' ];
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if ( home ) {
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return home;
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}
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// Get the current user account (https://docs.python.org/2/library/getpass.html):
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user = ENV[ 'LOGNAME' ] || ENV[ 'USER' ] || ENV[ 'LNAME' ] || ENV[ 'USERNAME' ];
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// If on Mac OS X, use the Mac path convention (http://apple.stackexchange.com/questions/119230/what-is-standard-for-os-x-filesystem-e-g-opt-vs-usr)...
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if ( PLATFORM === 'darwin' ) {
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return ( user ) ? '/Users/'+user : null;
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}
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// Check if running as 'root' (https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard)...
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if ( getuid() === 0 ) {
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return '/root';
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}
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// If on Linux, use the Linux path convention (https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard)...
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return ( user ) ? '/home/'+user : null;
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}
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// EXPORTS //
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module.exports = homedir;
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