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35 lines
911 B
PowerShell
Executable File
35 lines
911 B
PowerShell
Executable File
#!/snap/bin/powershell
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<#
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.SYNTAX ./write-rot13.ps1 [<text>]
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.DESCRIPTION encodes or decodes the given text with ROT13
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.LINK https://github.com/fleschutz/PowerShell
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.NOTES Author: Markus Fleschutz / License: CC0
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#>
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param([string]$Text = "")
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function ROT13 { param([string]$Text)
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$Text.ToCharArray() | ForEach-Object {
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if ((([int] $_ -ge 97) -and ([int] $_ -le 109)) -or (([int] $_ -ge 65) -and ([int] $_ -le 77))) {
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$Result += [char] ([int] $_ + 13);
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} elseif ((([int] $_ -ge 110) -and ([int] $_ -le 122)) -or (([int] $_ -ge 78) -and ([int] $_ -le 90))) {
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$Result += [char] ([int] $_ - 13);
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} else {
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$Result += $_
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}
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}
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return $Result
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}
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try {
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if ($Text -eq "" ) {
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[string]$Text = read-host "Enter text to write"
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}
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$Result = ROT13 $Text
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write-output $Result
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exit 0
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} catch {
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write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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