Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

32 lines (25 sloc) 0.993 kb
{-|
Author : Sergei Trofimovich <slyfox@inbox.ru>
Stability : experimental
Portability : haskell98
Ungrouped utilitary stuff lays here until someone finds better place for it :]
-}
module Util
( run_cmd -- :: String -> IO (Maybe String)
) where
import System.IO
import System.Process
import System.Exit (ExitCode(..))
-- 'run_cmd' executes command and returns it's standard output
-- as 'String'.
run_cmd :: String -> IO (Maybe String)
run_cmd cmd = do (hI, hO, hE, hProcess) <- runInteractiveCommand cmd
hClose hI
output <- hGetContents hO
errors <- hGetContents hE -- TODO: propagate error to caller
length output `seq` hClose hO
length errors `seq` hClose hE
exitCode <- waitForProcess hProcess
return $ if (output == "" || exitCode /= ExitSuccess)
then Nothing
else Just output
Jump to Line
Something went wrong with that request. Please try again.