C2HS.C.Extra.Marshal

Convenient marshallers for complicate C types.

Documentation

peekIntegral :: (Integral a, Storable a, Integral b) => Ptr a -> IO b

Peek from pointer then cast to another integral type.

peekString :: Ptr (Ptr CChar) -> IO String

Peek string from a two-dimension pointer of CChar.

peekStringArray :: Integral n => n -> Ptr (Ptr CChar) -> IO [String]

Peek an array of String and the result's length is given.

withStringArray :: [String] -> (Ptr (Ptr CChar) -> IO a) -> IO a

Use an array of String as argument, usually used to pass multiple names to C functions.

withIntegralArray :: (Integral a, Integral b, Storable b) => [a] -> (Ptr b -> IO c) -> IO c

Use an array of Integral as argument.