Contents

module Vedeu
  class Translator
    class << self
      def translate(html_colour = nil)
        new(html_colour).translate
      end
    end

    def initialize(html_colour = nil)
      @html_colour = html_colour
    end

    def translate
      return unless valid?
      [term_colour_base, red, green, blue].inject(:+)
    end

    private

    attr_reader :html_colour

    def red
      (html_colour[1..2].to_i(16) / colour_divide) * 36
    end

    def green
      (html_colour[3..4].to_i(16) / colour_divide) * 6
    end

    def blue
      (html_colour[5..6].to_i(16) / colour_divide) * 1
    end

    def colour_divide
      source_values / target_values
    end

    def source_values
      256
    end

    def target_values
      5
    end

    def term_colour_base
      16
    end

    def valid?
      html_colour && valid_type? && valid_format?
    end

    def valid_type?
      html_colour.is_a?(String)
    end

    def valid_format?
      html_colour =~ /^#([A-Fa-f0-9]{6})$/
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
vedeu-0.0.5	lib/vedeu/output/translator.rb
vedeu-0.0.4	lib/vedeu/output/translator.rb