node-gyp/lib/find-node-directory.js
Rod Vagg e40c99e283
src: implement standard.js linting
In addition:

* moved module.exports to the bottom
* no single-line if statements
* no if statements without a {
* const for requires
* array declarations get spaces inside [ ]
* 'use strict' in all .js files

PR-URL: https://github.com/nodejs/node-gyp/pull/1794
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: João Reis <reis@janeasystems.com>
2019-07-06 14:36:37 +10:00

63 lines
2.3 KiB
JavaScript

'use strict'
const path = require('path')
const log = require('npmlog')
function findNodeDirectory (scriptLocation, processObj) {
// set dirname and process if not passed in
// this facilitates regression tests
if (scriptLocation === undefined) {
scriptLocation = __dirname
}
if (processObj === undefined) {
processObj = process
}
// Have a look to see what is above us, to try and work out where we are
var npmParentDirectory = path.join(scriptLocation, '../../../..')
log.verbose('node-gyp root', 'npm_parent_directory is ' +
path.basename(npmParentDirectory))
var nodeRootDir = ''
log.verbose('node-gyp root', 'Finding node root directory')
if (path.basename(npmParentDirectory) === 'deps') {
// We are in a build directory where this script lives in
// deps/npm/node_modules/node-gyp/lib
nodeRootDir = path.join(npmParentDirectory, '..')
log.verbose('node-gyp root', 'in build directory, root = ' +
nodeRootDir)
} else if (path.basename(npmParentDirectory) === 'node_modules') {
// We are in a node install directory where this script lives in
// lib/node_modules/npm/node_modules/node-gyp/lib or
// node_modules/npm/node_modules/node-gyp/lib depending on the
// platform
if (processObj.platform === 'win32') {
nodeRootDir = path.join(npmParentDirectory, '..')
} else {
nodeRootDir = path.join(npmParentDirectory, '../..')
}
log.verbose('node-gyp root', 'in install directory, root = ' +
nodeRootDir)
} else {
// We don't know where we are, try working it out from the location
// of the node binary
var nodeDir = path.dirname(processObj.execPath)
var directoryUp = path.basename(nodeDir)
if (directoryUp === 'bin') {
nodeRootDir = path.join(nodeDir, '..')
} else if (directoryUp === 'Release' || directoryUp === 'Debug') {
// If we are a recently built node, and the directory structure
// is that of a repository. If we are on Windows then we only need
// to go one level up, everything else, two
if (processObj.platform === 'win32') {
nodeRootDir = path.join(nodeDir, '..')
} else {
nodeRootDir = path.join(nodeDir, '../..')
}
}
// Else return the default blank, "".
}
return nodeRootDir
}
module.exports = findNodeDirectory