* how-to get commit content with pre-receive hook ?
@ 2017-04-06 14:03 Eric Belhomme
2017-04-06 18:38 ` Ævar Arnfjörð Bjarmason
2017-04-06 20:13 ` Igor Djordjevic
0 siblings, 2 replies; 4+ messages in thread
From: Eric Belhomme @ 2017-04-06 14:03 UTC (permalink / raw)
To: git
Hello the list,
Until now I ever had a quite "basic" Git usage, but now I'm working on a
project based on Git hooks feature.. and I'm a very beginner with Git
hooks !
My need consist doing a syntax check on submitted files before a 'git
push'. So the right hook is 'pre-receive' and I'm already able to
identify the files I want to check using 'git show'.
But I don't know how to get the *content* of the file being submitted to
run my syntax check rules against it !
I googled but most examples using pre-receive I found are doing sanity
check on enveloppe but never on actual content of the file !
Could someone here put me on the rails ?
Regards,
--
Eric
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how-to get commit content with pre-receive hook ?
2017-04-06 14:03 how-to get commit content with pre-receive hook ? Eric Belhomme
@ 2017-04-06 18:38 ` Ævar Arnfjörð Bjarmason
2017-04-06 18:48 ` Stefan Beller
2017-04-06 20:13 ` Igor Djordjevic
1 sibling, 1 reply; 4+ messages in thread
From: Ævar Arnfjörð Bjarmason @ 2017-04-06 18:38 UTC (permalink / raw)
To: Eric Belhomme; +Cc: Git Mailing List
On Thu, Apr 6, 2017 at 4:03 PM, Eric Belhomme <rico-ml@ricozome.net> wrote:
> Until now I ever had a quite "basic" Git usage, but now I'm working on a
> project based on Git hooks feature.. and I'm a very beginner with Git hooks
> !
>
> My need consist doing a syntax check on submitted files before a 'git push'.
> So the right hook is 'pre-receive' and I'm already able to identify the
> files I want to check using 'git show'.
>
> But I don't know how to get the *content* of the file being submitted to run
> my syntax check rules against it !
>
> I googled but most examples using pre-receive I found are doing sanity check
> on enveloppe but never on actual content of the file !
>
> Could someone here put me on the rails ?
>
> Regards,
As documented in githooks(5), the hook gets a list of these on stdin:
<old-value> SP <new-value> SP <ref-name> LF
That means that you can use any git command to inspect that ref range, e.g.:
git log -p <old>..<new>
git diff <old>..<new>
Or (pseudocode):
git show <commit>:<some path> for $(git rev-list <old>..<new>)
This is no different than how you'd inspect the content in your git
repo, e.g. to get the README.md content of the master branch of
git.git:
$ git ls-tree master|grep README
100644 blob f17af66a97c8097ab91f074478c4a5cb90425725 README.md
$ git cat-file blob f17af66a97c8097ab91f074478c4a5cb90425725|wc
61 397 3001
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how-to get commit content with pre-receive hook ?
2017-04-06 18:38 ` Ævar Arnfjörð Bjarmason
@ 2017-04-06 18:48 ` Stefan Beller
0 siblings, 0 replies; 4+ messages in thread
From: Stefan Beller @ 2017-04-06 18:48 UTC (permalink / raw)
To: Ævar Arnfjörð Bjarmason; +Cc: Eric Belhomme, Git Mailing List
>>
>> But I don't know how to get the *content* of the file being submitted to run
>> my syntax check rules against it !
>>
> git log -p <old>..<new>
> git diff <old>..<new>
or in case of the tool requiring a full worktree
mkdir /tmp/test
GIT_WORKTREE=/tmp/test git checkout -f <new>
and then perform the check on that full tree?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how-to get commit content with pre-receive hook ?
2017-04-06 14:03 how-to get commit content with pre-receive hook ? Eric Belhomme
2017-04-06 18:38 ` Ævar Arnfjörð Bjarmason
@ 2017-04-06 20:13 ` Igor Djordjevic
1 sibling, 0 replies; 4+ messages in thread
From: Igor Djordjevic @ 2017-04-06 20:13 UTC (permalink / raw)
To: Eric Belhomme, git
Hello Eric,
On 06/04/2017 16:03, Eric Belhomme wrote:
> Until now I ever had a quite "basic" Git usage, but now I'm working
> on a project based on Git hooks feature.. and I'm a very beginner
> with Git hooks !
>
> My need consist doing a syntax check on submitted files before a 'git
> push'. So the right hook is 'pre-receive' and I'm already able to
> identify the files I want to check using 'git show'.
>
> But I don't know how to get the *content* of the file being submitted
> to run my syntax check rules against it !
>
> I googled but most examples using pre-receive I found are doing
> sanity check on enveloppe but never on actual content of the file !
>
> Could someone here put me on the rails ?
I`m yet another beginner with both Git hooks and Bash scripting, but
I`ve managed to patch something up that might give you an idea, just
drop it inside your "pre-receive" hook file:
while read oldrev newrev
do
for commit in $(git rev-list --reverse $oldrev..$newrev)
do
for file in $(git diff-tree --no-commit-id --name-only -r $commit)
do
echo "$(git show $commit:$file)" >&1
done
done
done
exit 1
This should reject any push attempt, returning back *content* of each
changed file for each new commit.
Feel free to adapt as needed, like processing/checking file content
instead of sending it over, allowing or rejecting the push
accordingly, and also handling corner cases (for example, "oldrev"
value of 0000... in case of a new ref creation).
I guess there might be better ways (comments welcome), but this
should at least get you going... and I`ve learned something new as
well ;)
Regards,
Buga
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-04-06 20:14 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2017-04-06 14:03 how-to get commit content with pre-receive hook ? Eric Belhomme
2017-04-06 18:38 ` Ævar Arnfjörð Bjarmason
2017-04-06 18:48 ` Stefan Beller
2017-04-06 20:13 ` Igor Djordjevic
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