module SimpleColor

  # Regular expression to scan if there is a clear ANSI effect at end of string
  CLEAR_REGEXP = /\e\[0m$/
  # Regular expression to find the end of the current ANSI sequence at
  # beginning of string, to wrap around in the correct order.
  COLOR_REGEXP = /^(\e\[([\d;]+)m)*/
  # Regular expression that is used to scan for ANSI-sequences while
  # uncoloring strings.
  COLORED_REGEXP = /\e\[(?:(?:[349]|10)[0-7]|[0-9])?m/
  
  #Stolen from paint gem
  #http://en.wikipedia.org/wiki/ANSI_escape_code
  
  # Basic colors (often, the color differs when using the bright effect)
  # Final color will be 30 + value for foreground and 40 + value for background
  # 90+value for intense foreground, 100+value for intense background
  ANSI_COLORS = {
    :black   => 0,
    :red     => 1,
    :green   => 2,
    :yellow  => 3,
    :blue    => 4,
    :magenta => 5,
    :cyan    => 6,
    :white   => 7,
    :default => 9,
  }
  
  ANSI_EFFECTS = {
    :reset         => 0,  :nothing         => 0,  # usually supported
    :clear         => 0,  :normal         => 0,  # usually supported
    :bright        => 1,  :bold            => 1,  # usually supported
    :faint         => 2,
    :italic        => 3,
    :underline     => 4,                          # usually supported
    :blink         => 5,  :slow_blink      => 5,
    :rapid_blink   => 6,
    :inverse       => 7,  :swap            => 7,  # usually supported
    :conceal       => 8,  :hide            => 9,
    :default_font  => 10,
    :font0 => 10, :font1 => 11, :font2 => 12, :font3 => 13, :font4 => 14,
    :font5 => 15, :font6 => 16, :font7 => 17, :font8 => 18, :font9 => 19,
    :fraktur       => 20,
    :bright_off    => 21, :bold_off        => 21, :double_underline => 21,
    :clean         => 22,
    :italic_off    => 23, :fraktur_off     => 23,
    :underline_off => 24,
    :blink_off     => 25,
    :inverse_off   => 26, :positive        => 26,
    :conceal_off   => 27, :show            => 27, :reveal           => 27,
    :crossed_off   => 29, :crossed_out_off => 29,
    :frame         => 51,
    :encircle      => 52,
    :overline      => 53,
    :frame_off     => 54, :encircle_off    => 54,
    :overline_off  => 55,
  }

  ANSI_COLORS_FOREGROUND = {
    :black   => 30,
    :red     => 31,
    :green   => 32,
    :yellow  => 33,
    :blue    => 34,
    :magenta => 35,
    :cyan    => 36,
    :white   => 37,
    :default => 39,
  }

  ANSI_COLORS_BACKGROUND = {
    :on_black   => 40,
    :on_red     => 41,
    :on_green   => 42,
    :on_yellow  => 43,
    :on_blue    => 44,
    :on_magenta => 45,
    :on_cyan    => 46,
    :on_white   => 47,
    :on_default => 49,
  }

  ANSI_COLORS_INTENSE_FOREGROUND = {
    :intense_black   => 90,
    :intense_red     => 91,
    :intense_green   => 92,
    :intense_yellow  => 93,
    :intense_blue    => 94,
    :intense_magenta => 95,
    :intense_cyan    => 96,
    :intense_white   => 97,
    :intense_default => 99,
  }

  ANSI_COLORS_INTENSE_BACKGROUND = {
    :on_instance_black   => 100,
    :on_instance_red     => 101,
    :on_instance_green   => 102,
    :on_instance_yellow  => 103,
    :on_instance_blue    => 104,
    :on_instance_magenta => 105,
    :on_instance_cyan    => 106,
    :on_instance_white   => 107,
    :on_instance_default => 109,
  }

  #attributes that can be specified to the color method
  COLORS = [ANSI_EFFECTS,ANSI_COLORS_FOREGROUND, ANSI_COLORS_BACKGROUND, ANSI_COLORS_INTENSE_FOREGROUND, ANSI_COLORS_INTENSE_BACKGROUND].inject({}){ |a,b| a.merge(b) }


end