Introduce git_for_each_tag_referring

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 4d9b81aa83af274469dbb2f302f090a82a9e46b8..e2f8edd05848c76f74e13c65d6561e39df1d1e48 100644 (file)
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -64,4 +64,15 @@ sub git_for_each_ref ($$) {
     $!=0; $?=0; close $fh or die "$pattern $? $!";
 }
 
+sub git_for_each_tag_referring ($$) {
+    my ($objreferring, $func) = @_;
+    # calls $func->($objid,$fullrefname,$tagname);
+    git_for_each_ref('refs/tags', sub {
+       my ($objid,$objtype,$fullrefname,$tagname) = @_;
+       next unless $objtype eq 'tag';
+       next if defined $objreferring and $objid ne $objreferring;
+       $func->($objid,$fullrefname,$tagname);
+    });
+}
+
 1;