Re: Looking for Cocoa diff and hash objects/ library
Re: Looking for Cocoa diff and hash objects/ library
- Subject: Re: Looking for Cocoa diff and hash objects/ library
- From: "Brad O'Hearne" <email@hidden>
- Date: Wed, 26 May 2004 12:24:16 -0400
Yeah, I think that GNU's cmp is GPL, which I'm not interested in
tangling with. XCode I'm sure has a diff, I wonder what it uses?
BradO
On May 25, 2004, at 4:54 PM, Chris Ridd wrote:
On 25/5/04 8:20 pm, Brad O'Hearne <email@hidden> wrote:
Hey all,
Could someone tell me if Cocoa (or any Apple specific API) contains
objects / libraries for doing two unrelated things:
1. Binary file diff.
No idea. You've got the BSD cmp program installed which you could try
using.
Obviously the source to *BSD's cmp and GNU's cmp is available.
2. Hashing (preferably SHA-2, but SHA-1 and MD5 would be nice too).
Apple provide 2 libraries which include hashing functions -
Security.framework wraps CDSA, which is a pretty comprehensive
library; and
OpenSSL, which is quite popular.
I'd tend towards using Security.framework if you can get your brain
around
it, as apps linked against tend to survive OS upgrades. Apps linked
against
OpenSSL do not. OTOH I can't see a SHA-2 implementation in
Security.framework, unless it has another name.
Cheers,
Chris
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