Private/Invoke-ExpandCAB.ps1
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function Invoke-ExpandCAB { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [string]$Cab, [Parameter(Mandatory = $true)] [string]$expectedFile ) Write-Verbose "Expanding CAB File: [$Cab]" # Define an Extraction Target Folder $TargetFolder = "$Cab.dir" # Check if the Target Folder Already Exists if (Test-Path -Path $TargetFolder) { # Remove the Target Folder Remove-Item -Path $TargetFolder -Recurse -Force Write-Verbose "Removed folder: [$TargetFolder]" } Write-Verbose "Expanding [$Cab] to [$TargetFolder]" # Create the Target Folder New-Item -Force $TargetFolder -ItemType Directory | Out-Null Write-Verbose "Created folder: [$TargetFolder]" $Shell = New-Object -ComObject Shell.Application $Exception = $null try { if ($Shell) { $SourceCab = $Shell.NameSpace($Cab).Items("PatchMyPC.xml") $DestinationFolder = $Shell.NameSpace($TargetFolder) $DestinationFolder.CopyHere($SourceCab) Write-Verbose "Extracted CAB File: [$Cab] to [$TargetFolder]" } else { throw "Failed to create Shell.Application COM object." } } catch { $Exception = $_.Exception } finally { # Release the Shell COM Object [System.Runtime.Interopservices.Marshal]::ReleaseComObject($Shell) | Out-Null # This line forces a garbage collection to occur, which attempts to reclaim memory occupied by unreachable objects. [System.GC]::Collect() # This line forces the garbage collector to wait for all pending finalizers to complete before continuing. [System.GC]::WaitForPendingFinalizers() } # Check if an Error Occurred if ($Exception) { throw "Failed to decompress $Cab. $($Exception.Message)." } # Check if the Expected File Exists if (!(Test-Path -Path $expectedFile)) { throw "Failed to extract the expected file: [$expectedFile]" } Return $expectedFile } |