Ditaa plugin for Jekyll

ditaa.rb

require 'fileutils'

module Jekyll
  class DitaaBlock < Liquid::Block
    def initialize(tag_name, markup, tokens)
      super
    end

    def render(context)
      File.open('/tmp/ditaa.txt', 'w') {|f| f.write(super)}
      result = system('ditaa /tmp/ditaa.txt -o /tmp/ditaa-foo.png')
      if result
        FileUtils.mv('/tmp/ditaa-foo.png', '_site/images/ditaa-foo.png')
        output = '<img src="ditaa-foo.png" />'
        output
      else
        ''
      end
    end
  end
end

Liquid::Template.register_tag('ditaa', Jekyll::DitaaBlock)

This is superseded by this plugin.