1 files changed, 49 insertions, 0 deletions
diff --git a/lib/gitlab/git/ref.rb b/lib/gitlab/git/ref.rb
new file mode 100644
index 00000000000..37ef6836742
--- /dev/null
+++ b/lib/gitlab/git/ref.rb
@@ -0,0 +1,49 @@
+module Gitlab
+  module Git
+    class Ref
+      include Gitlab::Git::EncodingHelper
+
+      # Branch or tag name
+      # without "refs/tags|heads" prefix
+      attr_reader :name
+
+      # Target sha.
+      # Usually it is commit sha but in case
+      # when tag reference on other tag it can be tag sha
+      attr_reader :target
+
+      # Dereferenced target
+      # Commit object to which the Ref points to
+      attr_reader :dereferenced_target
+
+      # Extract branch name from full ref path
+      #
+      # Ex.
+      #   Ref.extract_branch_name('refs/heads/master') #=> 'master'
+      def self.extract_branch_name(str)
+        str.gsub(/\Arefs\/heads\//, '')
+      end
+
+      def self.dereference_object(object)
+        object = object.target while object.is_a?(Rugged::Tag::Annotation)
+
+        object
+      end
+
+      def initialize(repository, name, target)
+        encode! name
+        @name = name.gsub(/\Arefs\/(tags|heads)\//, '')
+        @dereferenced_target = Gitlab::Git::Commit.find(repository, target)
+        @target = if target.respond_to?(:oid)
+                    target.oid
+                  elsif target.respond_to?(:name)
+                    target.name
+                  elsif target.is_a? String
+                    target
+                  else
+                    nil
+                  end
+      end
+    end
+  end
+end