gistfile1.rb

require 'lib/sinatra'

module Sinatra
  module Desc
    @descriptions = []
    class << self
      attr_accessor :desc, :descriptions
    end

    def self.route_added(verb, path)
      return if Desc.desc.nil?
      Desc.descriptions << [verb, path, Desc.desc]
      Desc.desc = nil
    end

    def self.registered(app)
      app.get "/help" do
        "<ul>" + Desc.descriptions.inject("") do |m, (verb, path, desc)|
          m << "<li><strong>#{verb} #{path}</strong> -" +
            desc + "</li>"
          m
        end + "</ul>"
      end
    end

    def desc(msg)
      Desc.desc = msg
    end
  end

  register Desc
end


desc "This is a test"
post "/" do
  "testing"
end