Contents

module Kitabu
  module Footnotes
    class HTML < Base
      def process
        html.css('.chapter').each(&method(:process_chapter))
      end

      def process_chapter(chapter)
        footnotes = chapter.css('.footnotes').first
        return unless footnotes
        list = footnotes.css('ol').first
        list.set_attribute 'start', footnote_index

        chapter.css('.footnotes li').each do |footnote|
          process_footnote(chapter, footnote)
          increment_footnote_index!
        end
      end

      def process_footnote(chapter, footnote)
        current_index = footnote.get_attribute('id').gsub(/[^\d]/m, '')
        footnote.set_attribute 'id', "fn#{footnote_index}"

        process_links_to_footnote(chapter, current_index)
        process_rev_links(chapter, current_index)
        process_ref_elements(chapter, current_index)
      end

      def process_links_to_footnote(chapter, current_index)
        chapter.css("a[href='#fn#{current_index}']").each do |link|
          link.set_attribute 'href', "#fn#{footnote_index}"
        end
      end

      def process_rev_links(chapter, current_index)
        chapter.css("a[href='#fnref#{current_index}']").each do |link|
          link.set_attribute 'href', "#fnref#{footnote_index}"
        end
      end

      def process_ref_elements(chapter, current_index)
        chapter.css("sup[id=fnref#{current_index}]").each_with_index do |sup, index|
          if index.zero?
            sup.set_attribute 'id', "fnref#{footnote_index}"
          else
            sup.remove_attribute 'id'
          end
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
kitabu-2.0.2	lib/kitabu/footnotes/html.rb
kitabu-2.0.1	lib/kitabu/footnotes/html.rb