--- /Volumes/home/john/Desktop/radiant-0.6.6/app/models/response_cache.rb	2008-04-26 16:14:50.000000000 -0600
+++ /Volumes/home/john/Desktop/radiant-r802/app/models/response_cache.rb	2008-04-18 15:53:04.000000000 -0600
@@ -7,11 +7,12 @@
     :default_extension => '.yml',
     :perform_caching => true,
     :logger => ActionController::Base.logger,
-    :use_x_sendfile => false
+    :use_x_sendfile => false,
+    :sendfile_proc => nil
   }
   cattr_accessor :defaults
   
-  attr_accessor :directory, :expire_time, :default_extension, :perform_caching, :logger, :use_x_sendfile
+  attr_accessor :directory, :expire_time, :default_extension, :perform_caching, :logger, :use_x_sendfile, :sendfile_proc
   alias :page_cache_directory :directory
   alias :page_cache_extension :default_extension
   private :benchmark, :silence, :page_cache_directory,
@@ -26,6 +27,7 @@
   # :perform_caching   :: boolean value that turns caching on or off (defaults to true)
   # :logger            :: the application logging object (defaults to ActionController::Base.logger)
   # :use_x_sendfile    :: use X-Sendfile headers to speed up transfer of cached pages (not available on all web servers)
+  # :sendfile_proc     :: a Proc object to use for custom X-Sendfile implementations
   # 
   def initialize(options = {})
     options = options.symbolize_keys.reverse_merge(defaults)
@@ -35,6 +37,7 @@
     self.perform_caching   = options[:perform_caching]
     self.logger            = options[:logger]
     self.use_x_sendfile    = options[:use_x_sendfile]
+    self.sendfile_proc     = options[:sendfile_proc]
   end
   
   # Caches a response object for path to disk.
@@ -106,6 +109,8 @@
         response.headers.merge!(metadata['headers'] || {})
         if client_has_cache?(metadata, request)
           response.headers.merge!('Status' => '304 Not Modified')
+        elsif sendfile_proc
+          sendfile_proc[request, response, page_cache_directory, file_path]
         elsif use_x_sendfile
           response.headers.merge!('X-Sendfile' => "#{file_path}.data")
         else