* Best way to get number of insertions and deletions from a diff?
@ 2010-10-13 19:21 Pat Notz
2010-10-13 19:37 ` Jeff King
0 siblings, 1 reply; 2+ messages in thread
From: Pat Notz @ 2010-10-13 19:21 UTC (permalink / raw)
To: Git
I'd like to probe various commits to see how many lines were added or
removed. For example,
$ git diff --shortstat HEAD HEAD^1
3 files changed, 5 insertions(+), 5 deletions(-)
That's great but I'd like to do this from a script and parse out those
numbers. Is there a more plumbing-level way to do this that would be
more robust? Or, should I just parse this output?
Thanks ~ Pat
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Best way to get number of insertions and deletions from a diff?
2010-10-13 19:21 Best way to get number of insertions and deletions from a diff? Pat Notz
@ 2010-10-13 19:37 ` Jeff King
0 siblings, 0 replies; 2+ messages in thread
From: Jeff King @ 2010-10-13 19:37 UTC (permalink / raw)
To: Pat Notz; +Cc: Git
On Wed, Oct 13, 2010 at 01:21:27PM -0600, Pat Notz wrote:
> I'd like to probe various commits to see how many lines were added or
> removed. For example,
>
> $ git diff --shortstat HEAD HEAD^1
> 3 files changed, 5 insertions(+), 5 deletions(-)
>
> That's great but I'd like to do this from a script and parse out those
> numbers. Is there a more plumbing-level way to do this that would be
> more robust? Or, should I just parse this output?
The official plumbing way is --numstat, but you will have to sum the
totals for file yourself. You should also use "git diff-tree" over "git
diff". If you have a lot of commits, the simplest thing is something
like:
git diff-tree --stdin --numstat <commits
which will automatically check each commit against its parent (though I
think diff-tree will not resolve refs for you, so you may need massage
the input).
-Peff
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