public/ConvertFrom-GzipString.ps1
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using namespace System.IO using namespace System.IO.Compression using namespace System.Text function ConvertFrom-GzipString { <# .SYNOPSIS Expands a Base64 encoded Gzip compressed input strings. .PARAMETER InputObject The Base64 encoded Gzip compressed string or strings to expand. .PARAMETER Encoding Character encoding used when expanding the Gzip strings. .PARAMETER Raw Outputs the expanded string as a single string with newlines preserved. By default, newline characters in the expanded string are used as delimiters to separate the input into an array of strings. .LINK https://github.com/santisq/PSCompression #> [CmdletBinding()] [Alias('gzipfromstring')] param( [Parameter(Mandatory, ValueFromPipeline)] [string[]] $InputObject, [Parameter()] [EncodingTransformation()] [ArgumentCompleter([EncodingCompleter])] [Encoding] $Encoding = 'utf8', [Parameter()] [switch] $Raw ) process { foreach($string in $InputObject) { try { $inStream = [MemoryStream]::new([Convert]::FromBase64String($string)) $gzip = [GZipStream]::new($inStream, [CompressionMode]::Decompress) $reader = [StreamReader]::new($gzip, $Encoding, $true) if($Raw.IsPresent) { return $reader.ReadToEnd() } while(-not $reader.EndOfStream) { $reader.ReadLine() } } catch { $PSCmdlet.WriteError($_) } finally { $reader, $gzip, $inStream | ForEach-Object Dispose } } } } |