Streaming.Conduit

This provides interoperability between the streaming and conduit libraries.

Not only can you convert between one streaming data representation to the other, there is also support to use one in the middle of a pipeline.

No ByteString-based analogues of asConduit and asStream are provided as it would be of strictly less utility, requiring both the input and output of the ConduitM to be ByteString.

Converting from Streams

fromStream :: Monad m => Stream (Of o) m r -> ConduitM i o m r

The result of this is slightly generic than a Source or a Producer. If it fits in the types you want, you may wish to use fromStreamProducer which is subject to fusion.

fromStreamSource :: Monad m => Stream (Of a) m r -> Source m a

A type-specialised variant of fromStream that ignores the result.

fromStreamProducer :: Monad m => Stream (Of a) m r -> Producer m a

A more specialised variant of fromStream that is subject to fusion.

asConduit :: Monad m => (Stream (Of i) m () -> Stream (Of o) m r) -> Conduit i m o

Treat a function between Streams as a Conduit. May be subject to fusion.

ByteString support

fromBStream :: Monad m => ByteString m r -> Source m ByteString

Convert a streaming ByteString into a Source; you probably want to use fromBStreamProducer instead.

fromBStreamProducer :: Monad m => ByteString m r -> Producer m ByteString

A more specialised variant of fromBStream that is subject to fusion.

Converting from Conduits

toStream :: Monad m => Producer m o -> Stream (Of o) m ()

Convert a Producer to a Stream. Subject to fusion.

It is not possible to generalise this to be a ConduitM as input values are required. If you need such functionality, see asStream.

asStream :: Monad m => Conduit i m o -> Stream (Of i) m () -> Stream (Of o) m ()

Treat a Conduit as a function between Streams. Subject to fusion.

ByteString support

toBStream :: Monad m => Producer m ByteString -> ByteString m ()

Convert a Producer to a ByteString stream. Subject to fusion.