Method: String#last_color_code

Defined in:
lib/doing/colors.rb

#last_color_code ⇒ Object

Get the calculated ANSI color at the end of the string

Returns:

  • ANSI escape sequence to match color



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# File 'lib/doing/colors.rb', line 135

def last_color_code
  m = scan(ESCAPE_REGEX)

  em = ['0']
  fg = nil
  bg = nil
  rgbf = nil
  rgbb = nil

  m.each do |c|
    case c
    when '0'
      em = ['0']
      fg, bg, rgbf, rgbb = nil
    when /^[34]8/
      case c
      when /^3/
        fg = nil
        rgbf = c
      when /^4/
        bg = nil
        rgbb = c
      end
    else
      c.split(/;/).each do |i|
        x = i.to_i
        if x <= 9
          em << x
        elsif x >= 30 && x <= 39
          rgbf = nil
          fg = x
        elsif x >= 40 && x <= 49
          rgbb = nil
          bg = x
        elsif x >= 90 && x <= 97
          rgbf = nil
          fg = x
        elsif x >= 100 && x <= 107
          rgbb = nil
          bg = x
        end
      end
    end
  end

  escape = "\e[#{em.join(';')}m"
  escape += "\e[#{rgbb}m" if rgbb
  escape += "\e[#{rgbf}m" if rgbf
  escape + "\e[#{[fg, bg].delete_if(&:nil?).join(';')}m"
end