Re: git rev-list with --name-status?

[demerphq <demerphq@gmail.com>]

2008/12/24  <skillzero@gmail.com>:
> Is there a way to print the equivalent of --name-status with git
> rev-list? The post-receive script that comes with git for sending
> comment emails does this to generate the commit log:
>
> git rev-parse --not --branches | grep -v $(git rev-parse $refname) |
>        git rev-list --pretty --stdin $oldrev..$newrev
>
> I'd like to also include the output of --name-status so the email
> shows which files were changed by each commit (rather than just a
> summary at the end since our pushes sometimes have a lot of commits in
> them).
>
> git rev-list doesn't seem to support --name-status and git log doesn't
> seem to support --stdin. Is there a better way to do what I want?

I wrote the following shell script function which you can add to your
post-receive-mail script. Any git rev-list --pretty statements there
can have the --pretty removed and have their output redirected to
this, and you get what you want. An  existing function changed to use
it follows. Theres probably prettier ways to do this, but hope it
helps. Id send a diff of the script as a whole except that its full of
other likely irrelevent changes.

Yves

# show_log_for_sha1s_on_std()
#
# take a list of sha1's on STDIN and print out their logs.
#
# if there are
#
# 0 commits output a notice saying there no changes in this update
#
# 1 commits - show the log only
#
# >1 commits - show log with --name-status output (list of files with
M/D/A type tags
# next to them for Modified Deleted and Added)
#
# This partly exists because we can't use --name-status with rev-list, and
# because we cant use --stdin with git log (even tho the docs might say
# otherwise in older gits). Although since we count SHA1's we can also do some
# special stuff like dealing with the 0/1/N commits differently.

show_log_for_sha1s_on_stdin()
{
                perl -e'
                        chomp(my @sha1= <>);
                        if (!@sha1) {
                                print "No new revisions added by this update\n";
                        }
                        else {
                            my $ns= @sha1 > 1 ? " --name-status" : "";
                            for my $idx (0..$#sha1) {
                                print $idx ? "\n" :  "" ,
                                      `git-log --pretty$ns -1 $sha1[$idx]`;
                                }
                        }
                '
}

generate_create_branch_email()
{
        # This is a new branch and so oldrev is not valid
        echo "        at  $newrev ($newrev_type)"
        echo ""

        echo $LOGBEGIN
        # This shows all log entries that are not already covered by
        # another ref - i.e. commits that are now accessible from this
        # ref that were previously not accessible
        # (see generate_update_branch_email for the explanation of this
        # command)
        git rev-parse --not --branches | grep -v $(git rev-parse $refname) |
        git rev-list --stdin $newrev | show_log_for_sha1s_on_stdin
        echo $LOGEND
}

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