static.rb in rack-3.0.0.beta1

- old
+ new

@@ -1,7 +1,11 @@
 # frozen_string_literal: true
 
+require_relative 'constants'
+require_relative 'files'
+require_relative 'mime'
+
 module Rack
 
   # The Rack::Static middleware intercepts requests for static files
   # (javascript files, images, stylesheets, etc) based on the url prefixes or
   # route mappings passed in the options, and serves them using a Rack::Files
@@ -76,20 +80,18 @@
   #
   #     use Rack::Static, :root => 'public',
   #         :header_rules => [
   #           # Cache all static files in public caches (e.g. Rack::Cache)
   #           #  as well as in the browser
-  #           [:all, {'Cache-Control' => 'public, max-age=31536000'}],
+  #           [:all, {'cache-control' => 'public, max-age=31536000'}],
   #
   #           # Provide web fonts with cross-origin access-control-headers
   #           #  Firefox requires this when serving assets using a Content Delivery Network
-  #           [:fonts, {'Access-Control-Allow-Origin' => '*'}]
+  #           [:fonts, {'access-control-allow-origin' => '*'}]
   #         ]
   #
   class Static
-    (require_relative 'core_ext/regexp'; using ::Rack::RegexpExtensions) if RUBY_VERSION < '2.4'
-
     def initialize(app, options = {})
       @app = app
       @urls = options[:urls] || ["/favicon.ico"]
       @index = options[:index]
       @gzip = options[:gzip]
@@ -135,13 +137,11 @@
           if response[0] == 404
             response = nil
           elsif response[0] == 304
             # Do nothing, leave headers as is
           else
-            if mime_type = Mime.mime_type(::File.extname(path), 'text/plain')
-              response[1][CONTENT_TYPE] = mime_type
-            end
-            response[1]['Content-Encoding'] = 'gzip'
+            response[1][CONTENT_TYPE] = Mime.mime_type(::File.extname(path), 'text/plain')
+            response[1]['content-encoding'] = 'gzip'
           end
         end
 
         path = env[PATH_INFO]
         response ||= @file_server.call(env)