k.schupke at imperial.ac.uk
Thu Apr 21 08:36:53 EDT 2005
Actually thats Peter Simons... (too many Simons...)
Keean Schupke wrote:
> Just a thought, what about the other Simon's BlockIO library, its
> certainly very efficient, and probably what I
> am going to use for binaryIO from now on.
> Simon Marlow wrote:
>> On 20 April 2005 22:35, Scott Turner wrote:
>>> On 2005 April 20 Wednesday 15:56, Iavor Diatchki wrote:
>>>> I've been playing around with decoding binary files, and I couldn't
>>>> find a function in the libraries to read a byte from a file. Does
>>>> anyone know if there is such a function? ....... it seems
>>>> that we should have:
>>>> hGetByte :: Handle -> IO Word8
>>> hGetByte could be implemented on top of hGetBuf and StorableArray,
>>> but the overhead would be ugly. Recently I needed binary input for
>>> similar reasons, and would have used hGetByte had it been available.
>>> I ended up performing input using a reasonable-sized buffer.
>> In GHC, you can assume that
>> hGetByte h = do c <- hGetChar h; return (fromIntegral (ord c))
>> you must open the file in binary mode (openBinaryFile). I don't think
>> this works with Hugs, though.
>> Personally, I think this ought to be part of the redesign of the I/O
>> library. hGetByte and hPutByte would be a stopgap. But, not much
>> progress is being made on an I/O redesign right now.
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