Functions/Format-MacAddress.ps1
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function Format-MacAddress { <# .SYNOPSIS Function to cleanup a MACAddress string .DESCRIPTION Function to clean up a MACAddress string and optionally format it with separators .PARAMETER MacAddress Specifies the MacAddress. Either a single string or an array of strings. Aliased to 'Address' .PARAMETER Separator Specifies the separator every X characters. Aliased to 'Delimiter'. Validated against set(':', 'None', '.', "-", ' ', 'Space', ';') .PARAMETER Case Specifies if the output is to be set in a particular case Upper Sets to upper case, 'a' becomes 'A' Uppercase Sets to upper case, 'a' becomes 'A' Lower Sets to lower case, 'A' becomes 'a' Lowercase Sets to lower case, 'A' becomes 'a' Ignore Does nothing to the case of the letters 'aB', so remains as 'aB' .Parameter Split Specifies how many characters to split the MacAddress on. Valid values are 2,3,4,6 .EXAMPLE Format-MacAddress -MacAddress 1234567890ab 12:34:56:78:90:ab .EXAMPLE Format-MacAddress -MacAddress '00:11:22:dD:ee:FF' -Case Upper 00:11:22:DD:EE:FF .EXAMPLE Format-MacAddress -MacAddress '00:11:22:dD:ee:FF' -Case Lowercase 001122ddeeff .EXAMPLE Format-MacAddress -MacAddress '00:11:22:dD:ee:FF' -Case Lowercase -Separator '-' 00-11-22-dd-ee-ff .EXAMPLE Format-MacAddress -MacAddress '00:11:22:dD:ee:FF' -Case Lowercase -Separator '.' 00.11.22.dd.ee.ff .EXAMPLE Format-MacAddress -Address '00:11:22:dD:ee:FF', '10005a123456' -case Uppercase -Delimiter '-' 00-11-22-DD-EE-FF 10-00-5A-12-34-56 Showing how function can take an array of MacAddress using the alias 'Address' and the alias 'Delimiter' for the 'Separator' parameter .EXAMPLE '00:11:22:dD:ee:FF', '10005a123456' | Format-MacAddress -case Lowercase -Separator '.' 00.11.22.dd.ee.ff 10.00.5a.12.34.56 Showing how the values for MacAddress can be received from the pipeline .EXAMPLE Format-MacAddress '10005a123456' -case Lowercase -Separator ':' 10:00:5a:12:34:56 Showing how MacAddress can be unnamed positional parameter .EXAMPLE '00:11:22:dD:ee:FF' | Format-MacAddress -Separator None -Case Ignore 001122dDeeFF .EXAMPLE '00:11:22:dD:ee:FF', '10005a123456' | Format-MacAddress -case Lowercase -Separator '.' -Split 4 0011.22dd.eeff 1000.5a12.3456 .EXAMPLE '00:11:22:dD:ee:FF', '10005a123456' | Format-MacAddress -case Lowercase -Separator '.' -Split 4 -IncludeOriginal OriginalMac FormattedMac ----------- ------------ 00:11:22:dD:ee:FF 0011.22dd.eeff 10005a123456 1000.5a12.3456 .OUTPUTS System.String .NOTES # Inspired and based on Clean-MacAddress.ps1 by # Francois-Xavier Cat # www.lazywinadmin.com # @lazywinadm Modified: 1. Changed MacAddress to allow for pipeline input 2. Changed MacAddress to be a positional parameter 3. Changed MacAddress to be aliased to 'Address' 4. Changed MacAddress to accept an array of addresses if need be 5. Changed Separator to be aliased to 'Delimiter' 6. Added the space and semicolon to the set of valid separator values 7. Changed the switches Upper and Lower to be a string parameter Case which accepts as valid input Upper, Uppercase, Lower, Lowercase, Ignore 8. Added -Split parameter that can split the address every X characters. Valid values are 2,3,4,6 9. Added IncludeOriginal switch to be able to compare original with formatted. #> #region Parameter [OutputType('String')] [CmdletBinding()] param ( [Parameter(Position=0,HelpMessage='Please enter a MAC address (12 hex)',Mandatory,ValueFromPipeline)] [Alias('Address')] [String[]] $MacAddress, [ValidateSet(':', 'None', '.', '-', ' ', 'Space', ';')] [Alias('Delimiter')] [string] $Separator = ':', [ValidateSet('Ignore', 'Upper', 'Uppercase', 'Lower', 'Lowercase')] [string] $Case = 'Lower', [ValidateSet(2,3,4,6)] [int] $Split = 2, [switch] $IncludeOriginal ) #endregion Parameter begin { if ($Separator -eq 'Space') { $Separator = ' ' } Write-Verbose -Message "Starting $($MyInvocation.Mycommand)" } process { foreach ($Mac in $MacAddress) { $oldMac = $Mac $Mac = $Mac -replace '-', '' #Replace Dash $Mac = $Mac -replace ':', '' #Replace Colon $Mac = $Mac -replace ';', '' #Replace semicolon $Mac = $Mac -replace '/s', '' #Remove whitespace $Mac = $Mac -replace ' ', '' #Remove whitespace $Mac = $Mac -replace '\.', '' #Remove dots $Mac = $Mac.trim() #Remove space at the beginning $Mac = $Mac.trimend() #Remove space at the end switch ($Case) { 'Upper' { $Mac = $mac.toupper() } 'Uppercase' { $Mac = $mac.toupper() } 'Lower' { $Mac = $mac.tolower() } 'Lowercase' { $Mac = $mac.tolower() } 'Ignore' { } Default { } } if ($Separator -ne 'None') { switch ($Split) { 2 { $Mac = $Mac -replace '(..(?!$))', "`$1$Separator" } 3 { $Mac = $Mac -replace '(...(?!$))', "`$1$Separator" } 4 { $Mac = $Mac -replace '(....(?!$))', "`$1$Separator" } 6 { $Mac = $Mac -replace '(......(?!$))', "`$1$Separator" } default { $Mac = $Mac -replace '(..(?!$))', "`$1$Separator" } } } if ( -not ($IncludeOriginal) ) { write-output -InputObject $Mac } else { $prop = @{ OriginalMac = $oldMac ; FormattedMac = $mac } $obj = new-object -TypeName psobject -Property $prop write-output -InputObject $obj } } } #EndBlock Process end { Write-Verbose -Message "Ending $($MyInvocation.Mycommand)" } } #EndFunction Format-MacAddress |