gistfile1.rb

require 'erb'

module Diaspora
  module Markdownify
    class HTML < Redcarpet::Render::HTML
      include ActionView::Helpers::TextHelper
      include ActionView::Helpers::TagHelper

      def initialize(options={})
        @options = options
        super(options)
      end

      def autolink(link, type)
        link = localize_diaspora_url(link) if @options[:localize_diaspora_urls] and @options[:remote_pod_url]
        auto_link(link, :link => :urls, :html => { :target => "_blank" })
      end

      def link(link, title, content)
        super(localize_diaspora_url(link), title, content)
      end

      def localize_diaspora_url(link)
        base_url = "https://#{@options[:remote_pod_url]}/posts/"
        if(/^#{base_url}([0-9a-z]*)/.match(link))
          guid = $1
          return "https://#{AppConfig[:pod_url]}/posts/"+guid if guid.length>8 and Post.exists?(:guid => guid)
        end
        return link
      end

    end
  end
end