Neil Mitchell wrote:
Hi
The final alternative is that I just call MD5SUM.EXE from my Haskell program and try to parse the output. But that strikes me as rather messy.
Messy, but I don't see any disadvantage to doing it this way - if you can control that the MD5SUM program is installed alongside your code.
Ooo... it's all coming back to me now... The MD5SUM.EXE file I have chokes if you ask it to hash a file in another directory. It will hash from stdin, or from a file in the current directory, but point-blank refuses to hash anything else. So I'd have to write my Haskell code to open the file I want and *pipe* it to stdin on MD5SUM.EXE (making sure to not translate line ends or anything else that will alter the hash code). Then I have to parse the output and change it to actually match the UNIX md5sum program. [Because I want to make it compatible with that.] That also involves some fun with line ends...
Of course, there is the standard Crypto library for Haskell, http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Crypto-3.0.3 - either:
1) it goes fast enough 2) it goes too slow and someone should make it go faster
Either way, it should go fast enough as soon as someone needs it to go faster.
I see. Well, I'll see if I can get that working, and then we'll see about making it faster! :-D