PowerShell version of "GuidGen" application

GuidGen.ps1

param (
    [ValidateSet('Ole', 'Define', 'Struct', 'Registry', 'AttributeBracket', 'AttributeBrace')]
    [Parameter(Mandatory = $true, Position = 0)][string]$Type
)

function New-GuidObject {
    $guid = (New-Guid).Guid
    $m = Select-String `
        -InputObject $guid `
        -Pattern '([0-9A-Fa-f]{8})-([0-9A-Fa-f]{4})-([0-9A-Fa-f]{4})-([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})-([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})'
    [PSCustomObject]@{
        'Guid'    = $guid.ToUpper()
        'Data1'   = $m.Matches.Groups[1].Value
        'Data2'   = $m.Matches.Groups[2].Value
        'Data3'   = $m.Matches.Groups[3].Value
        'Data4_1' = $m.Matches.Groups[4].Value
        'Data4_2' = $m.Matches.Groups[5].Value
        'Data4_3' = $m.Matches.Groups[6].Value
        'Data4_4' = $m.Matches.Groups[7].Value
        'Data4_5' = $m.Matches.Groups[8].Value
        'Data4_6' = $m.Matches.Groups[9].Value
        'Data4_7' = $m.Matches.Groups[10].Value
        'Data4_8' = $m.Matches.Groups[11].Value

    }
}

switch ($Type) {
    'Ole' {
        $guid = New-GuidObject
        "// {{{0}}}`nIMPLEMENT_OLECREATE(<<class>>, <<external_name>>,`n0x{1}, 0x{2}, 0x{3}, 0x{4}, 0x{5}, 0x{6}, 0x{7}, 0x{8}, 0x{9}, 0x{10}, 0x{11});" -f `
            $guid.Guid, $guid.Data1, $guid.Data2, $guid.Data3, $guid.Data4_1, $guid.Data4_2, $guid.Data4_3, $guid.Data4_4, $guid.Data4_5, $guid.Data4_6, $guid.Data4_7, $guid.Data4_8
    }
    'Define' {
        $guid = New-GuidObject
        "// {{{0}}}`nDEFINE_GUID(<<name>>,`n0x{1}, 0x{2}, 0x{3}, 0x{4}, 0x{5}, 0x{6}, 0x{7}, 0x{8}, 0x{9}, 0x{10}, 0x{11});" -f `
            $guid.Guid, $guid.Data1, $guid.Data2, $guid.Data3, $guid.Data4_1, $guid.Data4_2, $guid.Data4_3, $guid.Data4_4, $guid.Data4_5, $guid.Data4_6, $guid.Data4_7, $guid.Data4_8
    }
    'Struct' {
        $guid = New-GuidObject
        "/* {{{0}}} */`nstatic const GUID <<name>> =`n{{ 0x{1}, 0x{2}, 0x{3}, {{ 0x{4}, 0x{5}, 0x{6}, 0x{7}, 0x{8}, 0x{9}, 0x{10}, 0x{11} }} }};" -f `
            $guid.Guid, $guid.Data1, $guid.Data2, $guid.Data3, $guid.Data4_1, $guid.Data4_2, $guid.Data4_3, $guid.Data4_4, $guid.Data4_5, $guid.Data4_6, $guid.Data4_7, $guid.Data4_8
    }
    'Registry' { '{{{0}}}' -f (New-GuidObject).Guid }
    'AttributeBracket' { '[Guid("{0}")]' -f (New-GuidObject).Guid }
    'AttributeBrace' { '<Guid("{0}")>' -f (New-GuidObject).Guid }
}