_plugins/markdown.rb

   1 =begin
   2   Jekyll tag to include Markdown text from _includes directory preprocessing with Liquid.
   3   Usage:
   4     {% markdown <filename> %}
   5   Dependency:
   6     - kramdown
   7 =end
   8 module Jekyll
   9   class MarkdownTag < Liquid::Tag
  10     def initialize(tag_name, text, tokens)
  11       super
  12       @text = text.strip
  13     end
  14     require "kramdown"
  15     def render(context)
  16       site = context.registers[:site]
  17       if @tag_name == 'markdown' then
  18         fname = File.join site.source, "_includes", @text
  19       else
  20         page = context.registers[:page]
  21         fname = File.join site.source, File.dirname(page['path']), @text
  22       end
  23       tmpl = Liquid::Template.parse(File.read fname).render site.site_payload
  24       html = Kramdown::Document.new(tmpl).to_html
  25     end
  26   end
  27 end
  28 Liquid::Template.register_tag('markdown', Jekyll::MarkdownTag)
  29 Liquid::Template.register_tag('markdown_relative', Jekyll::MarkdownTag)