Static Server based on Sinatra

Using Sinatra provides better handling of mime types and supports
304's/etc.

Also updated the Gemfile to exclude most gem outside of developemnt
(default).

Gemfile

@@ -1,5 +1,6 @@
 source "http://rubygems.org"
 
+group :development do 
   gem 'rake'
   gem 'rack'
   gem 'jekyll'
@@ -11,3 +12,6 @@ gem 'compass', '>= 0.11'
   gem 'rubypants'
   gem 'rb-fsevent'
   gem 'stringex'
+end
+
+gem 'sinatra', '1.2.6'

Gemfile.lock

@@ -40,8 +40,12 @@ GEM
       blankslate (>= 2.1.2.3)
       ffi (~> 1.0.7)
     sass (3.1.5)
+    sinatra (1.2.6)
+      rack (~> 1.1)
+      tilt (>= 1.2.2, < 2.0)
     stringex (1.3.0)
     syntax (1.0.0)
+    tilt (1.3.2)
 
 PLATFORMS
   ruby
@@ -57,4 +61,5 @@ DEPENDENCIES
   rb-fsevent
   rdiscount
   rubypants
+  sinatra (= 1.2.6)
   stringex

config.ru

@@ -1,35 +1,25 @@
-require 'rubygems'
 require 'bundler/setup'
-require 'rack'
+require 'sinatra/base'
 
 # The project root directory
 $root = ::File.dirname(__FILE__)
 
-# Common Rack Middleware
-use Rack::ShowStatus      # Nice looking 404s and other messages
-use Rack::ShowExceptions  # Nice looking errors
+class SinatraStaticServer < Sinatra::Base  
 
-#
-# From Rack::DirectoryIndex:
-# https://github.com/craigmarksmith/rack-directory-index/
-#
-module Rack
-  class DirectoryIndex
-    def initialize(app)
-      @app = app
-    end
-    def call(env)
-      index_path = ::File.join($root, 'public', Rack::Request.new(env).path.split('/'), 'index.html')
-      if ::File.exists?(index_path)
-        return [200, {"Content-Type" => "text/html"}, [::File.read(index_path)]]
-      else
-        @app.call(env)
-      end
-    end
-  end
+  get(/.+/) do
+    send_sinatra_file(request.path) {404}
   end
 
-use Rack::DirectoryIndex
+  not_found do
+    send_sinatra_file('404.html') {"Sorry, I cannot find #{request.path}"}
+  end
 
-run Rack::Directory.new($root + '/public')
+  def send_sinatra_file(path, &missing_file_block)
+    file_path = File.join(File.dirname(__FILE__), 'public',  path)
+    file_path = File.join(file_path, 'index.html') unless file_path =~ /\.[a-z]+$/i  
+    File.exist?(file_path) ? send_file(file_path) : missing_file_block.call
+  end
 
+end
+
+run SinatraStaticServer