module System.Process.Text where
import Control.Exception
import Control.Monad
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Text.IO as T
import System.Process
import System.Exit (ExitCode)
import System.IO
import Utils (forkWait)
readProcessWithExitCode
:: FilePath
-> [String]
-> Text
-> IO (ExitCode, Text, Text)
readProcessWithExitCode cmd args input = mask $ \restore -> do
(Just inh, Just outh, Just errh, pid) <-
createProcess (proc cmd args){ std_in = CreatePipe,
std_out = CreatePipe,
std_err = CreatePipe }
flip onException
(do hClose inh; hClose outh; hClose errh;
terminateProcess pid; waitForProcess pid) $ restore $ do
waitOut <- forkWait $ T.hGetContents outh
waitErr <- forkWait $ T.hGetContents errh
unless (T.null input) $ do T.hPutStr inh input; hFlush inh
hClose inh
out <- waitOut
err <- waitErr
hClose outh
hClose errh
ex <- waitForProcess pid
return (ex, out, err)