Rack middleware to add in nice typographic features

README

This quick little middleware grabs all HTML pages going across the wire, peeks inside and replaces the content with some nice features: curly quotes instead of straight quotes (prime marks), conversion of -- to proper emdashes, insertion of   to prevent text widows, wrapper HTML classes for caps and ampersands for fancier styling, and other fun things.  

It's really a middleware wrapper for Typogruby (http://avdgaag.github.com/typogruby/), so check it out if you want the gory details. 

It requires:

typogruby: http://avdgaag.github.com/typogruby/
nokogiri: http://nokogiri.org/

Have fun!

rack_typo.rb

require 'typogruby'
require 'nokogiri'

module Rack
  class Typo
 
    def initialize(app)
      @app = app
    end
    
    def call(env)
      status, headers, response = @app.call(env)
      if headers["Content-Type"].include? "text/html"
        s = ""
        response.body.each { |x| s << x}
        doc = Nokogiri::HTML(s)
        doc.encoding = 'UTF-8'
        
        doc.at_css("body").traverse do |node|
          if node.text?
            node.replace(Nokogiri::HTML.fragment(Typogruby.improve(node.content)))
          end
        end
        
        response.body = doc.to_html.lines.to_a
      end
      [status, headers, response]
    end
 
  end
end