functions/Copy-HashManifest.ps1
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function Copy-HashManifest { [CmdletBinding(SupportsShouldProcess)] param ( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName, ParameterSetName = 'Manifest')] [psobject[]] $Manifest, [Parameter(Mandatory)] [ValidateScript( { if (Test-Path $_ -PathType Container -IsValid) { $True } Else { Throw '-Destination must be a valid path.' } })] [String] $Destination, [ValidateSet('SHA1', 'SHA256', 'SHA384', 'SHA512', 'MACTripleDES', 'MD5', 'RIPEMD160')] [String] $Algorithm = 'MD5', [switch] $Mirror, [switch] $PassThru ) Begin { If (-Not (Test-Path $Destination)) { Throw "$Destination does not exist" } Else { $Destination = Join-Path ((Resolve-Path -Path $Destination).Path) -ChildPath '/' } } Process { $Manifest | Where-Object { $private:filename = Join-Path $Destination -ChildPath $_.Filename -Not(Test-FileHash -Path $private:filename -Algorithm $Algorithm -Hash $_.Hash) } | ForEach-Object { if ($PSCmdlet.ShouldProcess($_.Location, 'Download')) { $private:filename = Join-Path $Destination -ChildPath $_.Filename New-Item -Force -Path $private:filename -ItemType 'file' | Out-Null Invoke-WebRequest -Uri $_.Location -OutFile $private:filename -PassThru:$PassThru } } if (-not $Mirror) { return } [string[]] $private:filenames = $Manifest | Select-Object -ExpandProperty Filename | ForEach-Object { Join-Path -Path $Destination -ChildPath $_ } Get-ChildItem $Destination -Recurse -File | Where-Object { -Not $private:filenames.Contains($_.FullName) } | ForEach-Object { if ($PSCmdlet.ShouldProcess($_.FullName, 'Remove-Item')) { Remove-Item $_ } } } } |