Functions/Private/GetImageType.ps1
|
function GetImageType { <# .SYNOPSIS Retrieves the type of the image. .PARAMETER Path The path to the image file that will be inspected. .OUTPUTS This command emits a value from the [ImageType] enumeration #> [CmdletBinding()] param ( [ValidateScript({ if (Test-Path -Path $PSItem) { $true } else { throw 'File does not exist or permission denied.' } })] [string] $Path ) $Path = Resolve-Path -Path $Path try { Write-Verbose -Message ('Reading image file: {0}' -f $Path) $Image = Get-WindowsImage -ImagePath $Path -ErrorAction Stop if ($Image) { Write-Verbose -Message 'Image file appears to be a valid WIM or VHDX file.' } Write-Verbose -Message ('Image file {0} contains {1} images' -f $Path, $Image.Count) ### If the file name ends with 'wim', or it has more than one image, then it's a WIM if ($Image.Count -gt 1 -or ($Path -match 'wim$' -and ($Image.ImageName.Length -ge 1))) { Write-Verbose -Message 'This image appears to be a valid Windows Image Format (WIM) file.' return [ImageType]::WIM } ### If the file only has a single image, and doesn't have an image name, it might be a VHDX if ($Image.Count -eq 1 -and $Image.ImageName -eq '') { Write-Verbose -Message 'This image appears to be a valid Virtual Hard Drive (VHDX) file.' return [ImageType]::VHDX } return [ImageType]::Unknown } catch { Write-Error -Message ('Error occurred while attempting to inspect the image file. {0}' -f $PSItem.Exception.Message) throw $PSItem } } |