From: Don Zickus <dzickus@redhat.com>
Date: Thu, 19 Jun 2008 21:20:49 GMT
Subject: Re: suggestions for generating diffs through the revision list
Message-ID: <20080619212049.GO16941@redhat.com>
In-Reply-To: <7v63s767mb.fsf@gitster.siamese.dyndns.org>

On Tue, Jun 17, 2008 at 03:04:28PM -0700, Junio C Hamano wrote:
> Don Zickus <dzickus@redhat.com> writes:
> 
> > I am try to walk the revision history for a given path and analyze the
> > diff (as compared to its parent).  What is the proper way of doing that?
> >
> > I noticed a bunch of 'library' calls such as
> >
> > init_revsion(&revs);
> > setup_revisions(argc, argv, &revs, "HEAD");
> > prepare_revision_walk(&revs, NULL);
> > commit = get_revision(&revs);
> >
> > But what I can't find is the way to generate diffs.  I see lots and lots
> > of code to do it, but every builtin seems to do it differently.  Not
> > knowing the internals that well, I was hoping for some advice.
> >
> > I stumbled upon calls like
> >
> > run_diff_files
> > run_diff_index
> >
> > but I haven't seen how to use them correctly.
> 
> Documentation/technical/api-*.txt

Hmm. Thanks.  I was trying to keep the diffs in memory and I couldn't find
anything in the api-*.txt that did anything but dump the output the stdout
or a file.

Anyway I just copied a bunch of code from builtin-blame.c and got my tool
to do what I wanted it to do, for now.

Cheers,
Don