[Haskell-cafe] Data.Conduit.Binary question

[Michael Litchard]

That does help, thanks!

On Sat, Sep 3, 2016 at 10:49 AM, David Turner <dct25-561bs at mythic-beasts.com
> wrote:

> Hi Michael,
>
> The sourceFile function reads the file in chunks and passes each chunk
> down the conduit, although the sizes of the chunks are not specified. If
> that's ok with you, you may be able to do something as simple as this:
>
>     sourceFile inFile `fuse` accumulateMD5 `fuseUpstream` sinkFile outFile
>
> where accumulateMD5 does the MD5 calculation.
>
> If you need control over the sizes of the chunks, I'd add something else
> to the pipeline between sourceFile and accumulateMD5 that sorts that out,
> rather than using sourceFileRange which will open the file and seek to the
> right place each time you call it.
>
> Hope that helps,
>
>
>
>
>
> On 3 September 2016 at 18:37, Michael Litchard <michael at schmong.org>
> wrote:
>
>> I'd like to use conduits to (1) read a binary file in chunks
>>                    (2) take an md5 of that chunk (3) write the chunk to a
>> file
>>                    (4) write md5 to file. I'm looking at
>> Data.Conduit.Binary.
>>                    Do I want sourceFileRange for (1)?
>>
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>
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