On Oct 23, 2013, at 8:07 PM, Duy Nguyen wrote: > On Wed, Oct 23, 2013 at 11:00 PM, Junio C Hamano <gits...@pobox.com> wrote: >> Duy Nguyen <pclo...@gmail.com> writes: >> >>> On Wed, Oct 23, 2013 at 2:50 AM, Junio C Hamano <gits...@pobox.com> wrote: >>>> It would be just the matter of updating commit_tree_extended() in >>>> commit.c to: >>>> >>>> - detect the need to add a new Change-Id: trailer; >>>> >>>> - call hash_sha1_file() on the commit object buffer (assuming that >>>> a commit object that you can actually "git cat-file commit" using >>>> the change Id does not have to exist anywhere for Gerrit to >>>> work---otherwise you would need to call write_sha1_file() >>>> instead) before adding Change-Id: trailer; >>>> >>>> - add Change-Id: trailer to the buffer; and then finally >>>> >>>> - let the existing write_sha1_file() to write it out. >>> >>> I'm not objecting special support for Gerrit, but if the change is >>> just commit_tree_extended() why don't we just ship the commit hook in >>> a new "Gerrit" template? >> >> It is not clear to me how you envision to make it work. > > I don't have the source code.
Now you do: https://gerrit.googlesource.com/gerrit/+/master/gerrit-server/src/main/resources/com/google/gerrit/server/tools/root/hooks/commit-msg > But the commit-msg hook document  > describes roughly what you wrote below, except the tree part. And I > suppose the hook has been working fine so far. Reading back the > original post, James ruled out always-active hooks in general and > wanted the control per command line. Perhaps we should add > --no-hooks[=<name>,<name>] to "git commit"? Or maybe it's still > inconvenient and --change-id is best. > >  > http://gerrit-documentation.googlecode.com/svn/Documentation/2.0/cmd-hook-commit-msg.html > >> Naïvely thinking, an obvious place to do this kind of thing may be >> the "commit-msg" hook, where the hook reads what the user prepared, >> finds that there is no existing "Change-Id:" trailer, and decides to >> add one. >> >> But what value would it add on that line as the Id? >> >> It wants to use the name of the commit object that would result if >> it were to return without further editing the given message, but we >> do not give such a commit object name to the hook, so the hook needs >> to duplicate the logic to come up with one. It may be doable (after >> all, builtin/commit.c is open source), but we do not give the hook >> the commit object header (i.e. it does not know what the tree, >> parent(s), author, committer lines would say, nor it does not know >> if we are going to add an encoding line), so the hook needs to guess >> what we will put there, too. > -- > Duy > -- > To unsubscribe from this list: send the line "unsubscribe git" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html