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)
+base=$1 url=$2 status=0
test -n "$base" && test -n "$url" || usage
die "fatal: Not a valid revision: $base"
fi
+#
+# $3 must be a symbolic ref, a unique ref, or
+# a SHA object expression. It can also be of
+# the format 'local-name:remote-name'.
+#
+local=${3%:*}
+local=${local:-HEAD}
+remote=${3#*:}
+pretty_remote=${remote#refs/}
+pretty_remote=${pretty_remote#heads/}
+head=$(git symbolic-ref -q "$local")
+head=${head:-$(git show-ref --heads --tags "$local" | cut -d' ' -f2)}
+head=${head:-$(git rev-parse --quiet --verify "$local")}
+
+# None of the above? Bad.
+test -z "$head" && die "fatal: Not a valid revision: $local"
+
+# This also verifies that the resulting head is unique:
+# "git show-ref" could have shown multiple matching refs..
headrev=$(git rev-parse --verify --quiet "$head"^0)
-if test -z "$headrev"
+test -z "$headrev" && die "fatal: Ambiguous revision: $local"
+
+# Was it a branch with a description?
+branch_name=${head#refs/heads/}
+if test "z$branch_name" = "z$headref" ||
+ ! git config "branch.$branch_name.description" >/dev/null
then
- die "fatal: Not a valid revision: $head"
+ branch_name=
fi
merge_base=$(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.
+# $head is the refname from the command line.
+# If a ref with the same name as $head exists at the remote
+# and their values match, use that.
#
# 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 $ref;
- }
- }
+ my ($head,$headrev) = (@ARGV);
+ my ($found);
- 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 = $found;
- last;
+ chomp;
+ my ($sha1, $ref, $deref) = /^(\S+)\s+([^^]+)(\S*)$/;
+ my ($pattern);
+ next unless ($sha1 eq $headrev);
+
+ $pattern="/$head\$";
+ if ($ref eq $head) {
+ $found = $ref;
}
- if ($ref =~ m|/\Q$ARGV[0]\E$|) {
- $exact = $found;
+ if ($ref =~ /$pattern/) {
+ $found = $ref;
+ }
+ if ($sha1 eq $head) {
+ $found = $sha1;
}
}
- if ($tagged) {
- print "$tagged\n";
- } elsif ($exact) {
- print "$exact\n";
- } elsif ($found) {
+ if ($found) {
print "$found\n";
}
'
-ref=$(git ls-remote "$url" | @@PERL@@ -e "$find_matching_ref" "$head" "$headrev" "$tag_name")
+ref=$(git ls-remote "$url" | @@PERL@@ -e "$find_matching_ref" "${remote:-HEAD}" "$headrev")
+
+if test -z "$ref"
+then
+ echo "warn: No match for commit $headrev found at $url" >&2
+ echo "warn: Are you sure you pushed '${remote:-HEAD}' there?" >&2
+ status=1
+fi
+
+# Special case: turn "for_linus" to "tags/for_linus" when it is correct
+if test "$ref" = "refs/tags/$pretty_remote"
+then
+ pretty_remote=tags/$pretty_remote
+fi
url=$(git ls-remote --get-url "$url")
are available in the git repository at:
' $merge_base &&
-echo " $url${ref+ $ref}" &&
+echo " $url $pretty_remote" &&
git show -s --format='
for you to fetch changes up to %H:
----------------------------------------------------------------' $headrev &&
-if test -n "$branch_name"
+if test $(git cat-file -t "$head") = tag
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" |
+ git cat-file tag "$head" |
sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
echo
+ echo "----------------------------------------------------------------"
fi &&
-if test -n "$branch_name" || test -n "$tag_name"
+if test -n "$branch_name"
then
+ echo "(from the branch description for $branch_name local branch)"
+ echo
+ git config "branch.$branch_name.description"
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