On 24 June 2016 at 11:41, Yuras Shumovich
I think it is possible (and easy) to implement with Data.ByteString.Builder. Just use the low-level interface: http://hacka ge.haskell.org/package/bytestring-0.10.8.1/docs/Data-ByteString- Builder-Extra.html#v:runBuilder
BufferWriter takes a buffer to write to and returns a continuation to be called in case the buffer is too small. The idea is to allocate a buffer, but reserve necessary space for length and checksum. Then run the builder, get the resulting ByteString (or work directly with `Ptr Word8`), calculate length and check sum and write then into the reserved space.
Just be careful when using the low level API, and read the docs carefully.
Aha, thanks, that looks like just what I'm after! Great.
On 24 June 2016 at 10:39, Axel Mannhardt
this might be of interest to you - the explanation is in German though:
http://nfa.imn.htwk-leipzig.de/HAL2015/programm/slides/breitner.pdf
Cheers, Axel
My German is nonexistent but fortunately the code is English enough to read, thanks. Unfortunately,
type ByteString = [Word8]
This is not the ByteString I'm looking for! Cheers, David