ref: 660cf9275b8374f89c8f5db51a070070f28c1afc
dir: /lib/Foreign/C/String.hs/
module Foreign.C.String( CChar, CString, CStringLen, newCAString, newCAStringLen, peekCAString, peekCAStringLen, withCAString, ) where import Prelude() -- do not import Prelude import Primitives import Data.Char_Type import Foreign.Marshal.Alloc type CChar = Char type CString = Ptr CChar type CStringLen = (Ptr CChar, Int) newCAString :: String -> IO CString newCAString s = primNewCAStringLen s `primBind` \ (s, _) -> primReturn s newCAStringLen :: String -> IO CStringLen newCAStringLen = primNewCAStringLen withCAString :: forall a . String -> (CString -> IO a) -> IO a withCAString s io = newCAString s `primBind` \ cs -> io cs `primBind` \ a -> free cs `primThen` primReturn a peekCAString :: CString -> IO String peekCAString = primPeekCAString peekCAStringLen :: CStringLen -> IO String peekCAStringLen (p, i) = primPeekCAStringLen p i