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git/git-request-pull.sh
Junio C Hamano 682853e687 request-pull: really favor a matching tag
After tagging the tip of "dev" branch with a "for-linus" tag and
pushing both out, running

	$ git request-pull $url $last_release dev

would produce an output asking the 'dev' branch of $url to be
pulled, because that is what the user asked the message to say.

We already detect this situation locally and include the contents of
the tag in the output; if the $url has that tag, favor that tag
(i.e. "for-linus") in the generated message over the branch name the
user gave us (i.e. "dev") from the command line, to make the output
look more consistent.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-01 12:38:19 -07:00

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#!/bin/sh
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.
USAGE='<start> <url> [<end>]'
LONG_USAGE='Summarizes the changes between two commits to the standard output,
and includes the given URL in the generated summary.'
SUBDIRECTORY_OK='Yes'
OPTIONS_KEEPDASHDASH=
OPTIONS_SPEC='git request-pull [options] start url [end]
--
p show patch text as well
'
. git-sh-setup
GIT_PAGER=
export GIT_PAGER
patch=
while case "$#" in 0) break ;; esac
do
case "$1" in
-p)
patch=-p ;;
--)
shift; break ;;
-*)
usage ;;
*)
break ;;
esac
shift
done
base=$1 url=$2 head=${3-HEAD} status=0 branch_name=
headref=$(git symbolic-ref -q "$head")
if git show-ref -q --verify "$headref"
then
branch_name=${headref#refs/heads/}
if test "z$branch_name" = "z$headref" ||
! git config "branch.$branch_name.description" >/dev/null
then
branch_name=
fi
fi
tag_name=$(git describe --exact "$head^0" 2>/dev/null)
test -n "$base" && test -n "$url" || usage
baserev=$(git rev-parse --verify "$base"^0) &&
headrev=$(git rev-parse --verify "$head"^0) || exit
merge_base=$(git merge-base $baserev $headrev) ||
die "fatal: No commits in common between $base and $head"
# $head is the token given from the command line, and $tag_name, if
# exists, is the tag we are going to show the commit information for.
# If that tag exists at the remote and it points at the commit, use it.
# Otherwise, if a branch with the same name as $head exists at the remote
# and their values match, use that instead.
#
# Otherwise find a random ref that matches $headrev.
find_matching_ref='
sub abbr {
my $ref = shift;
if ($ref =~ s|^refs/heads/|| || $ref =~ s|^refs/tags/|tags/|) {
return $ref;
} else {
return $ref;
}
}
my ($tagged, $branch, $found);
while (<STDIN>) {
my ($sha1, $ref, $deref) = /^(\S+)\s+(\S+?)(\^\{\})?$/;
next unless ($sha1 eq $ARGV[1]);
$found = abbr($ref);
if ($deref && $ref eq "tags/$ARGV[2]") {
$tagged = $found;
last;
}
if ($ref =~ m|/\Q$ARGV[0]\E$|) {
$exact = $found;
}
}
if ($tagged) {
print "$tagged\n";
} elsif ($exact) {
print "$exact\n";
} elsif ($found) {
print "$found\n";
}
'
ref=$(git ls-remote "$url" | perl -e "$find_matching_ref" "$head" "$headrev" "$tag_name")
url=$(git ls-remote --get-url "$url")
git show -s --format='The following changes since commit %H:
%s (%ci)
are available in the git repository at:
' $merge_base &&
echo " $url${ref+ $ref}" &&
git show -s --format='
for you to fetch changes up to %H:
%s (%ci)
----------------------------------------------------------------' $headrev &&
if test -n "$branch_name"
then
echo "(from the branch description for $branch_name local branch)"
echo
git config "branch.$branch_name.description"
fi &&
if test -n "$tag_name"
then
if test -z "$ref" || test "$ref" != "tags/$tag_name"
then
echo >&2 "warn: You locally have $tag_name but it does not (yet)"
echo >&2 "warn: appear to be at $url"
echo >&2 "warn: Do you want to push it there, perhaps?"
fi
git cat-file tag "$tag_name" |
sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
echo
fi &&
if test -n "$branch_name" || test -n "$tag_name"
then
echo "----------------------------------------------------------------"
fi &&
git shortlog ^$baserev $headrev &&
git diff -M --stat --summary $patch $merge_base..$headrev || status=1
if test -z "$ref"
then
echo "warn: No branch of $url is at:" >&2
git show -s --format='warn: %h: %s' $headrev >&2
echo "warn: Are you sure you pushed '$head' there?" >&2
status=1
fi
exit $status