Functions/Format-ReverseToken.ps1
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Function Format-ReverseToken { <# .SYNOPSIS To reverse a string that is broken into tokens by a delimiter .DESCRIPTION To reverse a string that is broken into tokens by a delimiter .PARAMETER String The string you wish to be reversed. Can be a string or an array of strings. Can be passed from the pipeline .PARAMETER Delimiter The delimiter character that separates the tokens. Defaults to '.' .PARAMETER IncludeInput Switch to display the input parameters with the output .PARAMETER Trim Switch to trim each token .EXAMPLE Format-ReverseToken -String 'google.com' Would return com.google .EXAMPLE Format-ReverseToken -String 'monster.us .google.com' Would return com.google.us .monster .EXAMPLE Format-ReverseToken -String 'monster.us .google.com' -Trim -IncludeInput Would return Original Delimiter Trim ReverseToken -------- --------- ---- ------------ monster.us .google.com . True com.google.us.monster .EXAMPLE 'yahoo.com','google.com' | Format-ReverseToken Would return com.yahoo com.google .EXAMPLE Format-ReverseToken -String 'monster;google;com' -Trim -Delimiter ';' Would return com;google;monster #> [CmdletBinding(ConfirmImpact='None')] [OutputType('string')] param( [Parameter(Mandatory, HelpMessage='Enter a string composed of tokens',Position=0,ValueFromPipeline)] [string[]] $String, [string] $Delimiter = '.', [switch] $IncludeInput, [switch] $Trim ) begin { Write-Verbose -Message "Starting [$($MyInvocation.Mycommand)]" } process { foreach ($currentString in $String) { if ($Trim) { $currentString = $currentString.Trim() } $tmpArray = $currentString.split($Delimiter) if ($Trim) { for ($i=0; $i -lt $tmpArray.Count; $i++) { $tmpArray[$i] = $tmpArray[$i].Trim() } } $ReturnVal = $tmpArray[($tmpArray.Count-1)..0] -join $Delimiter if ($IncludeInput) { New-Object -TypeName 'psobject' -Property ([ordered] @{ Original = $currentString Delimiter = $Delimiter Trim = $Trim ReverseToken = $ReturnVal }) } else { write-output -InputObject $ReturnVal } } } end { Write-Verbose -Message "Ending [$($MyInvocation.Mycommand)]" } } |