Rakefile.rb

require './application'

namespace :routes do
  task :show do
    endpoints = {}

    if Sinatra::Application.descendants.any?
      #Classic application structure
      applications = Sinatra::Application.descendants
      applications.each do |app|
        endpoints[app.to_s.downcase.to_sym] = app.routes
      end
    elsif Sinatra::Base.descendants.any?
      #Modular application structure
      applications = Sinatra::Base.descendants
      applications.each do |app|
        endpoints[app.to_s.downcase.to_sym] = app.routes
      end
    else
      abort("Cannot find any defined routes.....")
    end
    
    endpoints.each do |app_name,routes|
      puts "Application: #{app_name}\n"
      routes.each do |verb,handlers|
        puts "\n#{verb}:\n"
        handlers.each do |handler|
          puts handler[0].source.to_s
        end
      end
    end
  end
end