Created
October 29, 2021 12:59
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fix for bits
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function ConvertTo-BitString { | |
[Alias('bits')] | |
[CmdletBinding(PositionalBinding = $false)] | |
param( | |
[Parameter(ValueFromPipeline)] | |
[psobject[]] $InputObject, | |
[Parameter(Position = 0)] | |
[ValidateRange(1, [int]::MaxValue)] | |
[int] $Padding, | |
[Parameter(Position = 1)] | |
[ValidateNotNull()] | |
[AllowEmptyString()] | |
[string] $ByteSeparator = ' ', | |
[Parameter(Position = 2)] | |
[ValidateNotNull()] | |
[AllowEmptyString()] | |
[string] $HalfByteSeparator = '.' | |
) | |
begin { | |
$toBytes = [psdelegate]{ | |
($a) => { [MemoryMarshal]::AsBytes([MemoryExtensions]::AsSpan($a)).ToArray() } | |
} | |
function GetBinaryString([psobject] $item) { | |
$numeric = $item.psobject.BaseObject | |
$numericType = $numeric.GetType() | |
$isPrimitive = $numericType.IsPrimitive | |
if (-not $isPrimitive) { | |
if ($numericType.GetFields([BindingFlags]'Instance, Public, NonPublic').Length -gt 1) { | |
$PSCmdlet.WriteWarning( | |
'Structs with two or more fields may show inaccurately depending on field layout and processor endianness.') | |
} | |
} | |
$delegateType = [Func`2].MakeGenericType( | |
$numeric.GetType().MakeArrayType(), | |
[byte[]]) | |
$toBytesCompiled = $toBytes -as $delegateType | |
$bytes = $toBytesCompiled.Invoke($numeric) | |
# Should always do this for LE? or only makes sense for primitives? | |
if ([BitConverter]::IsLittleEndian) { | |
[array]::Reverse($bytes) | |
} | |
$sb = [StringBuilder]::new([convert]::ToString($bytes[0], <# toBase: #> 2)) | |
for ($i = 1; $i -lt $bytes.Length; $i++) { | |
$byte = $bytes[$i] | |
$bits = [convert]::ToString($byte, <# toBase: #> 2) | |
$null = $sb.Append($bits.PadLeft(8, [char]'0')) | |
} | |
$bits = $sb.ToString().TrimStart([char]'0') | |
if ($PSCmdlet.MyInvocation.BoundParameters.ContainsKey((nameof{$Padding}))) { | |
$padAmount = $Padding * 8 | |
if ($padAmount -ge $bits.Length) { | |
return $bits.PadLeft($Padding * 8, [char]'0') | |
} | |
} | |
$padAmount = 8 - ($bits.Length % 8) | |
if ($padAmount -eq 8) { | |
return $bits | |
} | |
return $bits.PadLeft($padAmount + $bits.Length, [char]'0') | |
} | |
} | |
process { | |
foreach ($currentItem in $InputObject) { | |
$binaryString = GetBinaryString $currentItem | |
# yield | |
$binaryString -replace | |
'[01]{8}(?=.)', "`$0$ByteSeparator" -replace | |
'[01]{4}(?=[01])', "`$0$HalfByteSeparator" | |
} | |
} | |
} |
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