def read(input)
      if input.is_a? Symbol
        @file = File.expand_path get_eval_file input
        File.read @file
      else
        @file = File.expand_path __FILE__
        input
      end
    end
def read(input)
      if input.is_a? Symbol
        @file = File.expand_path get_eval_file input
        File.read @file
      else
        @file = File.expand_path __FILE__
        input
      end
    end
Read input as file or string input

 @param input [Object]