vendor/rails/actionpack/lib/action_controller/vendor/rack-1.0/rack/static.rb

   1 module Rack
   2
   3   # The Rack::Static middleware intercepts requests for static files
   4   # (javascript files, images, stylesheets, etc) based on the url prefixes
   5   # passed in the options, and serves them using a Rack::File object. This
   6   # allows a Rack stack to serve both static and dynamic content.
   7   #
   8   # Examples:
   9   #     use Rack::Static, :urls => ["/media"]
  10   #     will serve all requests beginning with /media from the "media" folder
  11   #     located in the current directory (ie media/*).
  12   #
  13   #     use Rack::Static, :urls => ["/css", "/images"], :root => "public"
  14   #     will serve all requests beginning with /css or /images from the folder
  15   #     "public" in the current directory (ie public/css/* and public/images/*)
  16
  17   class Static
  18
  19     def initialize(app, options={})
  20       @app = app
  21       @urls = options[:urls] || ["/favicon.ico"]
  22       root = options[:root] || Dir.pwd
  23       @file_server = Rack::File.new(root)
  24     end
  25
  26     def call(env)
  27       path = env["PATH_INFO"]
  28       can_serve = @urls.any? { |url| path.index(url) == 0 }
  29
  30       if can_serve
  31         @file_server.call(env)
  32       else
  33         @app.call(env)
  34       end
  35     end
  36
  37   end
  38 end