Resolve-PathEx is a wrapper around Resolve-Path that adds support for resolving paths for files that don’t exist. Why would you ever want that? Have you ever created a function with a path parameter and a file name parameter, where the function itself would create a new file? With this function you could combine those two parameters into one. The great thing about Resolve-PathEx is that it supports wildcards (the same as Resolve-Path).
The function outputs a PSObject of course, with two properties; Path and Exists. The latter is a boolean and will tell you whether the fully resolved path exists or not.
As always, the code is hosted on GitHub, so if you spot a bug, or have any ideas for future improvements, fork my code and help me make it better!
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| function Resolve-PathEx { | |
| <# | |
| .SYNOPSIS | |
| Resolve-Path extended to also work with files that don't exist. | |
| .DESCRIPTION | |
| You can use Resolve-PathEx when you want to handle both filenames and paths in a single parameter in your functions. | |
| The function returns an object, and includes the resolved path as well as a boolean indicating whether the file | |
| exists or not. Wildcards are supported for both path and filename. | |
| .EXAMPLE | |
| Resolve-Path *.ps1 | |
| Will resolve full path of all files in the current directory with the ps1 file extension. | |
| .EXAMPLE | |
| Resolve-PathEx c:\program*\windows*\w*.exe | |
| Will resolve full path of all exe files beginning with w in any folders of the root of C: that starts with 'progra', | |
| and all subfolders of these that start with 'windows'. | |
| .EXAMPLE | |
| Resolve-Path | |
| Will resolve the current path. | |
| .EXAMPLE | |
| Resolve-Path nosuchfile.txt | |
| Will resolve the full path of the file, even though it doesn't exist. | |
| .LINK | |
| https://gist.github.com/gravejester/a5c8407fcf5fb16a356a | |
| .NOTES | |
| Author: Øyvind Kallstad | |
| Date: 13.11.2014 | |
| Version: 1.0 | |
| #> | |
| [CmdletBinding()] | |
| param ( | |
| [Parameter(Position = 0, ValueFromPipeline, ValueFromPipelinebyPropertyName)] | |
| [string[]] $Path = '.\' | |
| ) | |
| PROCESS{ | |
| foreach ($thisPath in $Path) { | |
| try { | |
| # first try to resolve using the whole path | |
| [array]$resolvedPath += (Resolve-Path –Path $thisPath –ErrorAction SilentlyContinue | Select-Object –ExpandProperty Path) | |
| # if that didn't work, split to get the path only | |
| if ([string]::IsNullOrEmpty($resolvedPath)) { | |
| $pathOnly = Split-Path $thisPath | |
| # if no path returned, add current directory as path | |
| if ([string]::IsNullOrEmpty($pathOnly)) { | |
| $pathOnly = '.\' | |
| } | |
| # try to resolve again using only the path | |
| $pathOnlyResolve = (Resolve-Path –Path $pathOnly –ErrorAction SilentlyContinue | Select-Object –ExpandProperty Path) | |
| # if successfull | |
| if (-not([string]::IsNullOrEmpty($pathOnlyResolve))) { | |
| # add the path and the filename back together | |
| foreach ($p in $pathOnlyResolve) { | |
| $pathAndFile = Join-Path –Path $p –ChildPath (Split-Path –Path $thisPath –Leaf) | |
| $exists = Test-Path $pathAndFile | |
| Write-Output (,([PSCustomObject] [Ordered] @{ | |
| Path = $pathAndFile | |
| Exists = $exists | |
| })) | |
| } | |
| } | |
| # if we still are unable to resolve, the path most likely don't exist | |
| else { | |
| Write-Warning "Unable to resolve $pathOnly" | |
| } | |
| } | |
| else { | |
| foreach ($item in $resolvedPath) { | |
| $exists = Test-Path $item | |
| Write-Output (,([PSCustomObject] [Ordered] @{ | |
| Path = $item | |
| Exists = $exists | |
| })) | |
| } | |
| } | |
| } | |
| catch { | |
| Write-Warning $_.Exception.Message | |
| } | |
| } | |
| } | |
| } |
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