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!

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
}
}
}
}

view raw
Resolve-PathEx.ps1
hosted with ❤ by GitHub

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