cli_parse Subroutine

  subroutine cli_parse()
  !< Build and parse test cli.
  type(command_line_interface) :: cli      !< Test command line interface.
  real(R8P)                    :: axis_(3) !< Axis of rotation.
  integer(I4P)                 :: error    !< Error trapping flag.

  call cli%init(progname='fossil_test_rotate',                              &
                authors='S. Zaghi',                                         &
                help='Usage: ',                                             &
                examples=["fossil_test_rotate --stl src/tests/dragon.stl"], &
                epilog=new_line('a')//"all done")

  call cli%add(switch='--stl',               &
               help='STL (input) file name', &
               required=.false.,             &
               def='src/tests/cube.stl',     &
               act='store')

  call cli%add(switch='--axis',         &
               help='axis of rotation', &
               required=.false.,        &
               nargs='+',               &
               def='1.0 0.0 0.0',       &
               act='store')

  call cli%add(switch='--angle',         &
               help='angle of rotation', &
               required=.false.,         &
               def='1.57079633',         &
               act='store')

  call cli%parse(error=error) ; if (error/=0) stop

  call cli%get(switch='--stl',   val=file_name_stl, error=error) ; if (error/=0) stop
  call cli%get(switch='--axis',  val=axis_,         error=error) ; if (error/=0) stop
  call cli%get(switch='--angle', val=angle,         error=error) ; if (error/=0) stop
  axis%x = axis_(1)
  axis%y = axis_(2)
  axis%z = axis_(3)
  endsubroutine cli_parse