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rot13.bat
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rot13.bat
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@echo off
:: rot13.bat
:: dr@zhihua-lai.com
:: http://www.zhihua-lai.com/acm
:: 16-Sept-2012
setlocal enableextensions enabledelayedexpansion
:begin
if "%1"=="-h" goto help
if "%1"=="" goto readin
goto start
:readin
(set /p _s=) && (
call :start !_s!
goto readin
) || (
goto end
)
:help
echo Usage: %0 text
shift
goto begin
goto end
:start
set _len=0
set _str=%*
:: Get the length of the sentence
set _subs=%_str%
:loop
if not defined _subs goto result
::remove the first char
set _subs=%_subs:~1%
set /a _len+=1
goto loop
:result
set /a _len-=1
(set s=)
for /l %%g in (0,1,%_len%) do (
call :build %%g
)
echo %s%
goto end
:build
:: get the next character
call set _digit=%%_str:~%1,1%%%
:: rot13 ^& rot5
if "!_digit!"=="a" (
(set s=!s!n)
) else if "!_digit!"=="b" (
(set s=!s!o)
) else if "!_digit!"=="c" (
(set s=!s!p)
) else if "!_digit!"=="d" (
(set s=!s!q)
) else if "!_digit!"=="e" (
(set s=!s!r)
) else if "!_digit!"=="f" (
(set s=!s!s)
) else if "!_digit!"=="g" (
(set s=!s!t)
) else if "!_digit!"=="h" (
(set s=!s!u)
) else if "!_digit!"=="i" (
(set s=!s!v)
) else if "!_digit!"=="j" (
(set s=!s!w)
) else if "!_digit!"=="k" (
(set s=!s!x)
) else if "!_digit!"=="l" (
(set s=!s!y)
) else if "!_digit!"=="m" (
(set s=!s!z)
) else if "!_digit!"=="n" (
(set s=!s!a)
) else if "!_digit!"=="o" (
(set s=!s!b)
) else if "!_digit!"=="p" (
(set s=!s!c)
) else if "!_digit!"=="q" (
(set s=!s!d)
) else if "!_digit!"=="r" (
(set s=!s!e)
) else if "!_digit!"=="s" (
(set s=!s!f)
) else if "!_digit!"=="t" (
(set s=!s!g)
) else if "!_digit!"=="u" (
(set s=!s!h)
) else if "!_digit!"=="v" (
(set s=!s!i)
) else if "!_digit!"=="w" (
(set s=!s!j)
) else if "!_digit!"=="x" (
(set s=!s!k)
) else if "!_digit!"=="y" (
(set s=!s!l)
) else if "!_digit!"=="z" (
(set s=!s!m)
) else if "!_digit!"=="A" (
(set s=!s!N)
) else if "!_digit!"=="B" (
(set s=!s!O)
) else if "!_digit!"=="C" (
(set s=!s!P)
) else if "!_digit!"=="D" (
(set s=!s!Q)
) else if "!_digit!"=="E" (
(set s=!s!R)
) else if "!_digit!"=="F" (
(set s=!s!S)
) else if "!_digit!"=="G" (
(set s=!s!T)
) else if "!_digit!"=="H" (
(set s=!s!U)
) else if "!_digit!"=="I" (
(set s=!s!V)
) else if "!_digit!"=="J" (
(set s=!s!W)
) else if "!_digit!"=="K" (
(set s=!s!X)
) else if "!_digit!"=="L" (
(set s=!s!U)
) else if "!_digit!"=="M" (
(set s=!s!Z)
) else if "!_digit!"=="N" (
(set s=!s!A)
) else if "!_digit!"=="O" (
(set s=!s!B)
) else if "!_digit!"=="P" (
(set s=!s!C)
) else if "!_digit!"=="Q" (
(set s=!s!D)
) else if "!_digit!"=="R" (
(set s=!s!E)
) else if "!_digit!"=="S" (
(set s=!s!F)
) else if "!_digit!"=="T" (
(set s=!s!G)
) else if "!_digit!"=="U" (
(set s=!s!H)
) else if "!_digit!"=="V" (
(set s=!s!I)
) else if "!_digit!"=="W" (
(set s=!s!J)
) else if "!_digit!"=="X" (
(set s=!s!K)
) else if "!_digit!"=="Y" (
(set s=!s!L)
) else if "!_digit!"=="Z" (
(set s=!s!M)
) else if "!_digit!"=="0" (
(set s=!s!5)
) else if "!_digit!"=="1" (
(set s=!s!6)
) else if "!_digit!"=="2" (
(set s=!s!7)
) else if "!_digit!"=="3" (
(set s=!s!8)
) else if "!_digit!"=="4" (
(set s=!s!9)
) else if "!_digit!"=="5" (
(set s=!s!0)
) else if "!_digit!"=="6" (
(set s=!s!1)
) else if "!_digit!"=="7" (
(set s=!s!2)
) else if "!_digit!"=="8" (
(set s=!s!3)
) else if "!_digit!"=="9" (
(set s=!s!4)
) else (
(set s=!s!!_digit!)
)
:end
endlocal