-----------------------------------------------------------------------------
module System.Cmd
- ( system -- :: String -> IO ExitCode
+ ( system, -- :: String -> IO ExitCode
+#ifdef __GLASGOW_HASKELL__
+ rawSystem, -- :: FilePath -> [String] -> IO ExitCode
+#endif
) where
import Prelude
-import System.Exit
-#ifndef __HUGS__
-import Foreign.C
-#endif
-
#ifdef __GLASGOW_HASKELL__
-import GHC.IOBase
+import System.Process
+import System.Exit ( ExitCode )
+import GHC.IOBase ( ioException, IOException(..), IOErrorType(..) )
#endif
#ifdef __HUGS__
import Hugs.System
#endif
+#ifdef __NHC__
+import System (system)
+#endif
+
-- ---------------------------------------------------------------------------
-- system
passes the command to the Windows command interpreter (@CMD.EXE@ or
@COMMAND.COM@), hence Unixy shell tricks will not work.
-}
-#ifndef __HUGS__
+#ifdef __GLASGOW_HASKELL__
system :: String -> IO ExitCode
system "" = ioException (IOError Nothing InvalidArgument "system" "null command" Nothing)
-system cmd =
- withCString cmd $ \s -> do
- status <- throwErrnoIfMinus1 "system" (primSystem s)
- case status of
- 0 -> return ExitSuccess
- n -> return (ExitFailure n)
+system cmd = do
+ p <- runCommand cmd
+ waitForProcess p
-foreign import ccall unsafe "systemCmd" primSystem :: CString -> IO Int
-#endif /* __HUGS__ */
+rawSystem :: String -> [String] -> IO ExitCode
+rawSystem cmd args = do
+ p <- runProcess cmd args Nothing Nothing Nothing Nothing Nothing
+ waitForProcess p
+#endif /* __GLASGOW_HASKELL__ */