Module: Ripl::Rocket::Shell

Defined in:
lib/ripl/rocket.rb

Instance Method Summary collapse

Instance Method Details

#loop_eval(input) ⇒ Object 



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# File 'lib/ripl/rocket.rb', line 59

def loop_eval(input)
  Ripl::Rocket.reset_output_height
  super
end

#print_result(result) ⇒ Object 



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# File 'lib/ripl/rocket.rb', line 64

def print_result(result)
  return if @error_raised
  if config[:rocket_mode]
    # get important data
    screen_length = `tput cols`.to_i
    screen_height = `tput lines`.to_i
    last_line_without_prompt = @input.split("\n").last || ''
    offset = (last_line_without_prompt.display_size + prompt.display_size ) % screen_length.to_i
    output_length = result.inspect.display_size
    rocket_length = config[:rocket_prompt].display_size
    stdout_height  = Ripl::Rocket.output_height
    color_config = config[:rocket_color]
    color_code   = !color_config || color_config.to_s[/^[\d;]+$/] ?
      color_config : Ripl::Rocket::COLORS[color_config.to_sym]
    colored_rocket = color_code ? "\e[#{ color_code }m#{ config[:rocket_prompt] }\e[0;0m" : config[:rocket_prompt]

    # auto rocket mode:  only display rocket if line has enough space left
    line_too_long   = screen_length <= offset + rocket_length + output_length
    height_too_long = stdout_height >= screen_height
    if !(config[:rocket_mode] == :auto && ( line_too_long || height_too_long ) )
      if !height_too_long
        print TPUT[:sc] +                   # save cursor position
              TPUT[:cuu1]*stdout_height +   # move cursor upwards    to the original input line
              TPUT[:cuf1]*offset +          # move cursor rightwards to the original input offset
              colored_rocket +              # draw rocket prompt
              format_result(result).sub( /^#{result_prompt}/, '' ) +         # draw result (without prompt)
              TPUT[:rc] +                   # restore cursor position
              ( config[:rocket_mode] != :auto && line_too_long  ? "\n" : '') # add a line for always-rocket mode

      else # too much stdout, but in "always rocket mode"
        puts colored_rocket +              # draw rocket prompt
             format_result(result).sub( /^#{result_prompt}/, '' )            # draw result (without prompt)
      end
      return
    end
  end
  # else: no rocket ;)
  super
end