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Powershell: Compress and decompress byte array

 3 years ago
source link: https://gist.github.com/jesusninoc/b27a8294df2036de6814cd086c0ae35e
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Compress and decompress byte array · GitHub

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Powershell: Compress and decompress byte array

# Compress and decompress byte array function Get-CompressedByteArray {

[CmdletBinding()] Param ( [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)] [byte[]] $byteArray = $(Throw("-byteArray is required")) ) Process { Write-Verbose "Get-CompressedByteArray" [System.IO.MemoryStream] $output = New-Object System.IO.MemoryStream $gzipStream = New-Object System.IO.Compression.GzipStream $output, ([IO.Compression.CompressionMode]::Compress) $gzipStream.Write( $byteArray, 0, $byteArray.Length ) $gzipStream.Close() $output.Close() $tmp = $output.ToArray() Write-Output $tmp } }

function Get-DecompressedByteArray {

[CmdletBinding()] Param ( [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)] [byte[]] $byteArray = $(Throw("-byteArray is required")) ) Process { Write-Verbose "Get-DecompressedByteArray" $input = New-Object System.IO.MemoryStream( , $byteArray ) $output = New-Object System.IO.MemoryStream $gzipStream = New-Object System.IO.Compression.GzipStream $input, ([IO.Compression.CompressionMode]::Decompress) $gzipStream.CopyTo( $output ) $gzipStream.Close() $input.Close() [byte[]] $byteOutArray = $output.ToArray() Write-Output $byteOutArray } }

[string] $text = "some text to encode" Write-Host "Text: " ( $text | Out-String )

[System.Text.Encoding] $enc = [System.Text.Encoding]::UTF8 [byte[]] $encText = $enc.GetBytes( $text )

$compressedByteArray = Get-CompressedByteArray -byteArray $encText Write-Host "Encoded: " ( $enc.GetString( $compressedByteArray ) | Out-String )

$decompressedByteArray = Get-DecompressedByteArray -byteArray $compressedByteArray Write-Host "Decoded: " ( $enc.GetString( $decompressedByteArray ) | Out-String )


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