marco-oweber:
On Thu, May 24, 2007 at 02:38:05PM +0800, L.Guo wrote:
Thanks for your suggestion, and sorry for the subject.
I have read the introduction of Data.ByteString, it is helpful.
And also, there is one problem left. When i read a binary file, data is truncated at the charactor EOF.
You have to use readBinaryFile instead of readFile. I had the same trouble as well.
I finally implemented accessing single characters in C and did use ffi because I didn't know haw to do this i haskell properly. ( using peek/poke functions 4 bytes got written (wihch is annotateted somewhere ) If you are interested I can sent you the modified ByteString package.
If someone can tell me which haskell function to use to set a random char in a memory buffer I would be pleased ..
'poke' or else use unboxed Word8 arrays Check the src for Data.ByteString for examples.