PowerShell/Scripts/write-rot13.ps1
2021-09-16 20:19:10 +02:00

39 lines
951 B
PowerShell
Executable File

<#
.SYNOPSIS
write-rot13.ps1 [<text>]
.DESCRIPTION
Prints the given text encoded or decoded with ROT13.
.EXAMPLE
PS> .\write-rot13.ps1 "Hello World"
.NOTES
Author: Markus Fleschutz · License: CC0
.LINK
https://github.com/fleschutz/PowerShell
#>
param([string]$text = "")
function ROT13 { param([string]$text)
$text.ToCharArray() | ForEach-Object {
if ((([int] $_ -ge 97) -and ([int] $_ -le 109)) -or (([int] $_ -ge 65) -and ([int] $_ -le 77))) {
$Result += [char] ([int] $_ + 13);
} elseif ((([int] $_ -ge 110) -and ([int] $_ -le 122)) -or (([int] $_ -ge 78) -and ([int] $_ -le 90))) {
$Result += [char] ([int] $_ - 13);
} else {
$Result += $_
}
}
return $Result
}
try {
if ($text -eq "" ) { $text = read-host "Enter text to write" }
$Result = ROT13 $text
write-output $Result
exit 0
} catch {
"⚠️ Error: $($Error[0]) ($($MyInvocation.MyCommand.Name):$($_.InvocationInfo.ScriptLineNumber))"
exit 1
}