require 'rack/utils' require 'active_support/core_ext/uri' module ActionDispatch class FileHandler def initialize(root, cache_control) @root = root.chomp('/') @compiled_root = /^#{Regexp.escape(root)}/ @file_server = ::Rack::File.new(@root, cache_control) end def match?(path) path = path.dup full_path = path.empty? ? @root : File.join(@root, escape_glob_chars(unescape_path(path))) paths = "#{full_path}#{ext}" matches = Dir[paths] match = matches.detect { |m| File.file?(m) } if match match.sub!(@compiled_root, '') ::Rack::Utils.escape(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 def unescape_path(path) URI.parser.unescape(path) end def escape_glob_chars(path) path.gsub(/[*?{}\[\]]/, "\\\\\\&") end end class Static def initialize(app, path, cache_control=nil) @app = app @file_handler = FileHandler.new(path, cache_control) end def call(env) case env['REQUEST_METHOD'] when 'GET', 'HEAD' path = env['PATH_INFO'].chomp('/') if match = @file_handler.match?(path) env["PATH_INFO"] = match return @file_handler.call(env) end end @app.call(env) end end end