module Data.Conduit.Cereal ( GetException
, sinkGet
, conduitGet
, sourcePut
, conduitPut
) where
import Control.Exception.Base
import qualified Data.ByteString as BS
import qualified Data.ByteString.Lazy as LBS
import qualified Data.Conduit as C
import qualified Data.Conduit.List as CL
import Data.Serialize hiding (get, put)
import Data.Typeable
import Data.Conduit.Cereal.Internal
data GetException = GetException String
deriving (Show, Typeable)
instance Exception GetException
conduitGet :: C.MonadThrow m => Get output -> C.Conduit BS.ByteString m output
conduitGet = mkConduitGet errorHandler
where errorHandler msg _ = pipeError $ GetException msg
sinkGet :: C.MonadThrow m => Get r -> C.Sink BS.ByteString m r
sinkGet = mkSinkGet errorHandler terminationHandler
where errorHandler msg _ = pipeError $ GetException msg
terminationHandler f _ = let Fail msg = f BS.empty in pipeError $ GetException msg
pipeError :: (C.MonadThrow m, Exception e) => e -> C.Pipe i o m r
pipeError e = C.PipeM (C.monadThrow e) undefined
sourcePut :: Monad m => Put -> C.Source m BS.ByteString
sourcePut put = CL.sourceList $ LBS.toChunks $ runPutLazy put
conduitPut :: Monad m => Putter input -> C.Conduit input m BS.ByteString
conduitPut p = CL.map $ runPut . p