Private/Test-IsFileSystemPath.ps1
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function Test-IsFileSystemPath { <# .SYNOPSIS Test if the input is a filesystem path. .DESCRIPTION Used by the cloudformation packager to determine if a property value is a filesystem path and the target should be packaged to S3. .PARAMETER PropertyValue Value of cloudformation property to test. .OUTPUTS [boolean] True if the value represents a path. #> param ( [object]$PropertyValue ) if (-not ($PropertyValue -is [string])) { # Not a string, then not a path return $false } try { if (Test-Path -Path $PropertyValue -PathType Any) { # Is a path that exists return $true } } catch { # Illegal path chars - can't be a path. return $false } try { $uri = [Uri]$PropertyValue if ($uri.Scheme -ieq 'file') { # Definitely is a file return $true } if (-not ([string]::IsNullOrEmpty($uri.Scheme))) { # It is an internet URI of some description (S3, HTTPS etc.) return $false } } catch { # If it cannot be parsed as a URI, definitely not a path. Most likely an inline lambda function. return $false } # If we get here, we have to assume it's a file. # All properties checked except AWS::Lambda::Function ... Code are URI properties. # Lambda code is an object entry which should have failed at one of the other checks above $true } |