Syntax for creating a cab file
New-CabinetFile -Name MyCabinet.cab -File "File01.exe","File02.txt"
--This creates a new MyCabinet.cab file in the current directory and adds the File01.exe and File02.txt files to it, also from the current directory.
Syntax for extracting a cab file
Get-ChildItem C:\CabFile\ | New-CabinetFile -Name MyCabinet.cab -DestinationPath C:\Users\UserA\Documents
--This creates a new C:\Users\UserA\Documents\MyCabinet.cab file and adds all files within the C:\CabFile\ directory into it.
Code for the New-CabinetFile function:
function New-CabinetFile {
[CmdletBinding()]
Param(
[Parameter(HelpMessage="Target .CAB file name.", Position=0, Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullOrEmpty()]
[Alias("FilePath")]
[string] $Name,
[Parameter(HelpMessage="File(s) to add to the .CAB.", Position=1, Mandatory=$true, ValueFromPipeline=$true)]
[ValidateNotNullOrEmpty()]
[Alias("FullName")]
[string[]] $File,
[Parameter(HelpMessage="Default intput/output path.", Position=2, ValueFromPipelineByPropertyName=$true)]
[AllowNull()]
[string[]] $DestinationPath,
[Parameter(HelpMessage="Do not overwrite any existing .cab file.")]
[Switch] $NoClobber
)
Begin {
## If $DestinationPath is blank, use the current directory by default
if ($DestinationPath -eq $null) { $DestinationPath = (Get-Location).Path; }
Write-Verbose "New-CabinetFile using default path '$DestinationPath'.";
Write-Verbose "Creating target cabinet file '$(Join-Path $DestinationPath $Name)'.";
## Test the -NoClobber switch
if ($NoClobber) {
## If file already exists then throw a terminating error
if (Test-Path -Path (Join-Path $DestinationPath $Name)) { throw "Output file '$(Join-Path $DestinationPath $Name)' already exists."; }
}
## Cab files require a directive file, see 'http://msdn.microsoft.com/en-us/library/bb417343.aspx#dir_file_syntax' for more info
$ddf = ";*** MakeCAB Directive file`r`n";
$ddf += ";`r`n";
$ddf += ".OPTION EXPLICIT`r`n";
$ddf += ".Set CabinetNameTemplate=$Name`r`n";
$ddf += ".Set DiskDirectory1=$DestinationPath`r`n";
$ddf += ".Set MaxDiskSize=0`r`n";
$ddf += ".Set Cabinet=on`r`n";
$ddf += ".Set Compress=on`r`n";
## Redirect the auto-generated Setup.rpt and Setup.inf files to the temp directory
$ddf += ".Set RptFileName=$(Join-Path $ENV:TEMP "setup.rpt")`r`n";
$ddf += ".Set InfFileName=$(Join-Path $ENV:TEMP "setup.inf")`r`n";
## If -Verbose, echo the directive file
if ($PSCmdlet.MyInvocation.BoundParameters["Verbose"].IsPresent) {
foreach ($ddfLine in $ddf -split [Environment]::NewLine) {
Write-Verbose $ddfLine;
}
}
}
Process {
## Enumerate all the files add to the cabinet directive file
foreach ($fileToAdd in $File) {
## Test whether the file is valid as given and is not a directory
if (Test-Path $fileToAdd -PathType Leaf) {
Write-Verbose """$fileToAdd""";
$ddf += """$fileToAdd""`r`n";
}
## If not, try joining the $File with the (default) $DestinationPath
elseif (Test-Path (Join-Path $DestinationPath $fileToAdd) -PathType Leaf) {
Write-Verbose """$(Join-Path $DestinationPath $fileToAdd)""";
$ddf += """$(Join-Path $DestinationPath $fileToAdd)""`r`n";
}
else { Write-Warning "File '$fileToAdd' is an invalid file or container object and has been ignored."; }
}
}
End {
$ddfFile = Join-Path $DestinationPath "$Name.ddf";
$ddf | Out-File $ddfFile -Encoding ascii | Out-Null;
Write-Verbose "Launching 'MakeCab /f ""$ddfFile""'.";
$makeCab = Invoke-Expression "MakeCab /F ""$ddfFile""";
## If Verbose, echo the MakeCab response/output
if ($PSCmdlet.MyInvocation.BoundParameters["Verbose"].IsPresent) {
## Recreate the output as Verbose output
foreach ($line in $makeCab -split [environment]::NewLine) {
if ($line.Contains("ERROR:")) { throw $line; }
else { Write-Verbose $line; }
}
}
## Delete the temporary .ddf file
Write-Verbose "Deleting the directive file '$ddfFile'.";
Remove-Item $ddfFile;
## Return the newly created .CAB FileInfo object to the pipeline
Get-Item (Join-Path $DestinationPath $Name);
}
}
