# File lib/ruby-prof/rack.rb, line 6
    def initialize(app, options = {})
      @app = app
      @options = options
      @options[:min_percent] ||= 1
      @tmpdir = options[:path] || Dir.tmpdir
      @printer_klasses = @options[:printers]  || {::RubyProf::FlatPrinter => 'flat.txt',
                                                  ::RubyProf::GraphPrinter => 'graph.txt',
                                                  ::RubyProf::GraphHtmlPrinter => 'graph.html',
                                                  ::RubyProf::CallStackPrinter => 'call_stack.html'}

      @skip_paths = options[:skip_paths] || [%r{^/assets}, %r{\.css$}, %r{\.js}, %r{\.png}, %r{\.jpeg}]
    end