public/Export-Up.ps1
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<#
.SYNOPSIS Export each ancestor of the current or given directory to a global variable. .PARAMETER From The folder from which to start. $PWD by default. .PARAMETER Force Overwrites any existing globals variables with the same names. .EXAMPLE C:\projects\powershell\src\Microsoft.PowerShell.SDK > Export-Up Name Value ---- ----- Microsoft.PowerShell.SDK C:\projects\powershell\src\Microsoft.PowerShell.SDK\ src C:\projects\powershell\src\ powershell C:\projects\powershell\ projects C:\projects\ C:\projects\powershell\src\Microsoft.PowerShell.SDK> $powershell C:\projects\powershell\ C:\projects\powershell\src\Microsoft.PowerShell.SDK> _ #> function Export-Up() { [CmdletBinding()] param( [string] $From = $PWD, [switch] $Force ) if (-not ($next = Resolve-Path $From)) { return } $getPair = { @{name = (Split-Path $next -Leaf); path = "$next" } } $output = [ordered]@{ (&$getPair).name = (&$getPair).path } while ( ($next = $next | Split-Path -Parent) -and ($next -ne (Resolve-Path $next).Drive.Root)) { $output.Add((&$getPair).name, (&$getPair).path) } $output.GetEnumerator() | % { New-Variable $_.Name $_.Value -Scope Global -Force:$Force -ErrorAction Ignore } $output } |