gistfile1.txt

      # Internal method to build argument list for BWA C functions
      # @note this method should not be called directly
      def self.build_args_for_BWA(args)
        cmd_args = args.map do |arg|
          FFI::MemoryPointer.from_string(arg.to_s) # convert every parameters into a string and then into a memory pointer
        end
        exec_args = FFI::MemoryPointer.new(:pointer, cmd_args.length) # creating a pointer to an array of pointers
        cmd_args.each_with_index do |arg, i|
          exec_args[i].put_pointer(0, arg) # filling in the array of pointers
        end
        return exec_args
      end