require 'rack/utils' module ActionDispatch class FileHandler def initialize(root) @root = root.chomp('/') @compiled_root = /^#{Regexp.escape(root)}/ @file_server = ::Rack::File.new(@root) end def match?(path) path = path.dup full_path = path.empty? ? @root : File.join(@root, ::Rack::Utils.unescape(path)) paths = "#{full_path}#{ext}" matches = Dir[paths] match = matches.detect { |m| File.file?(m) } if match match.sub!(@compiled_root, '') match end end def call(env) @file_server.call(env) end def ext @ext ||= begin ext = ::ActionController::Base.page_cache_extension "{,#{ext},/index#{ext}}" end end end class Static FILE_METHODS = %w(GET HEAD).freeze def initialize(app, path) @app = app @file_handler = FileHandler.new(path) end def call(env) path = env['PATH_INFO'].chomp('/') method = env['REQUEST_METHOD'] if FILE_METHODS.include?(method) if match = @file_handler.match?(path) env["PATH_INFO"] = match return @file_handler.call(env) end end @app.call(env) end end end