ConvertTo-HexString.ps1
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.SYNOPSIS Convert to Hex String .DESCRIPTION .EXAMPLE PS C:\>ConvertTo-HexString "What is a hex string?" Convert string to hex byte string seperated by spaces. .EXAMPLE PS C:\>"ASCII string to hex string" | ConvertTo-HexString -Delimiter "" -Encoding Ascii Convert ASCII string to hex byte string with no seperation. .INPUTS System.Object #> function ConvertTo-HexString { [CmdletBinding()] param ( # Value to convert [Parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true)] [object] $InputObjects, # Delimiter between Hex pairs [Parameter (Mandatory = $false)] [string] $Delimiter = ' ', # Encoding to use for text strings [Parameter (Mandatory = $false)] [ValidateSet('Ascii', 'UTF32', 'UTF7', 'UTF8', 'BigEndianUnicode', 'Unicode')] [string] $Encoding = 'Default' ) begin { function Transform ([byte[]]$InputBytes) { [string[]] $outHexString = New-Object string[] $InputBytes.Count for ($iByte = 0; $iByte -lt $InputBytes.Count; $iByte++) { $outHexString[$iByte] = $InputBytes[$iByte].ToString('X2') } return $outHexString -join $Delimiter } ## Create list to capture byte stream from piped input. [System.Collections.Generic.List[byte]] $listBytes = New-Object System.Collections.Generic.List[byte] } process { if ($InputObjects -is [byte[]]) { Write-Output (Transform $InputObjects) } else { foreach ($InputObject in $InputObjects) { [byte[]] $InputBytes = $null if ($InputObject -is [byte]) { ## Populate list with byte stream from piped input. if ($listBytes.Count -eq 0) { Write-Verbose 'Creating byte array from byte stream.' Write-Warning ('For better performance when piping a single byte array, use "Write-Output $byteArray -NoEnumerate | {0}".' -f $MyInvocation.MyCommand) } $listBytes.Add($InputObject) } elseif ($InputObject -is [byte[]]) { $InputBytes = $InputObject } elseif ($InputObject -is [string]) { $InputBytes = [Text.Encoding]::$Encoding.GetBytes($InputObject) } elseif ($InputObject -is [bool] -or $InputObject -is [char] -or $InputObject -is [single] -or $InputObject -is [double] -or $InputObject -is [int16] -or $InputObject -is [int32] -or $InputObject -is [int64] -or $InputObject -is [uint16] -or $InputObject -is [uint32] -or $InputObject -is [uint64]) { $InputBytes = [System.BitConverter]::GetBytes($InputObject) } elseif ($InputObject -is [guid]) { $InputBytes = $InputObject.ToByteArray() } elseif ($InputObject -is [System.IO.FileSystemInfo]) { if ($PSVersionTable.PSVersion -ge [version]'6.0') { $InputBytes = Get-Content $InputObject.FullName -Raw -AsByteStream } else { $InputBytes = Get-Content $InputObject.FullName -Raw -Encoding Byte } } else { ## Non-Terminating Error $Exception = New-Object ArgumentException -ArgumentList ('Cannot convert input of type {0} to Hex string.' -f $InputObject.GetType()) Write-Error -Exception $Exception -Category ([System.Management.Automation.ErrorCategory]::ParserError) -CategoryActivity $MyInvocation.MyCommand -ErrorId 'ConvertHexFailureTypeNotSupported' -TargetObject $InputObject } if ($null -ne $InputBytes -and $InputBytes.Count -gt 0) { Write-Output (Transform $InputBytes) } } } } end { ## Output captured byte stream from piped input. if ($listBytes.Count -gt 0) { Write-Output (Transform $listBytes.ToArray()) } } } # 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