class Shotgun::Loader

def inner_app
  if rackup_file =~ /\.ru$/
    config = File.read(rackup_file)
    eval "Rack::Builder.new {( #{config}\n )}.to_app", nil, rackup_file
  else
    require File.expand_path(rackup_file)
    if defined? Sinatra::Application
      Sinatra::Application.set :reload, false
      Sinatra::Application.set :logging, false
      Sinatra::Application.set :raise_errors, true
      Sinatra::Application
    else
      Object.const_get(camel_case(File.basename(rackup_file, '.rb')))
    end
  end
end