lib/jaspion/kilza.rb in jaspion-kilza-1.0.8 vs lib/jaspion/kilza.rb in jaspion-kilza-1.0.9

@@ -26,19 +26,21 @@
     #
     # @param str [String] string to be cleaned
     #
     # @return [String] cleaned string
     def self.clean(str)
+      return if str.nil?
       str = '_' + str if str[0].number?
       str.gsub(/[^a-zA-Z0-9]/, '_')
     end
 
     # Cleans the string and make it lowercase.
     #
     # @param str [String] string to be cleaned
     #
     # @return [String] cleaned string
     def self.normalize(str)
+      return if str.nil?
       Jaspion::Kilza.clean(str).downcase
     end
   end
 end