view paste/paste.14186 @ 3274:674476b08eaf

<ssstosis> gccrun FILE* f=fopen("/hackenv/bin/welcome13","w");fprintf(f,"welcome \\"$@\\" | tr a-zA-Z n-za-mN-ZA-M");fflush(f);fclose(f);
author HackBot
date Wed, 03 Jul 2013 02:55:22 +0000
parents e037173e0012
children
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line source

import System.Environment
import System.Process
import System.Exit
import Control.Monad
import Control.Applicative
import Data.List

main = do
    r <- buildRegex . permuteArgs <$> getArgs
    (_, _, _, h) <- createProcess (proc "/hackenv/bin/log" [r])
    exitWith <$> waitForProcess h
   where
     permuteArgs = permutations . join . map words
     buildRegex = oBrackets . intercalate ".*" . map (iBrackets . intercalate "|")
     iBrackets s = "(?:" ++ s ++ ")"
     oBrackets s = "^.*(?:" ++ s ++ ").*$"