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var path = require('path')
, 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
npm_parent_directory = path.join(scriptLocation, '../../../..')
log.verbose('node-gyp root', 'npm_parent_directory is '
+ path.basename(npm_parent_directory))
node_root_dir = ""
log.verbose('node-gyp root', 'Finding node root directory')
if (path.basename(npm_parent_directory) === 'deps') {
// We are in a build directory where this script lives in
// deps/npm/node_modules/node-gyp/lib
node_root_dir = path.join(npm_parent_directory, '..')
log.verbose('node-gyp root', 'in build directory, root = '
+ node_root_dir)
} else if (path.basename(npm_parent_directory) === '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') {
node_root_dir = path.join(npm_parent_directory, '..')
} else {
node_root_dir = path.join(npm_parent_directory, '../..')
}
log.verbose('node-gyp root', 'in install directory, root = '
+ node_root_dir)
} else {
// We don't know where we are, try working it out from the location
// of the node binary
var node_dir = path.dirname(processObj.execPath)
var directory_up = path.basename(node_dir)
if (directory_up === 'bin') {
node_root_dir = path.join(node_dir, '..')
} else if (directory_up === 'Release' || directory_up === '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') {
node_root_dir = path.join(node_dir, '..')
} else {
node_root_dir = path.join(node_dir, '../..')
}
}
// Else return the default blank, "".
}
return node_root_dir
}
module.exports = findNodeDirectory
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