Serving static files from Sinatra with case-insensitive URLs

Question

I'm serving a static site (generated by Jekyll/Octopress) on Heroku, using the thin webserver and a basic Sinatra app. My goal is to support case-insensitive URLs (either by serving the same page from URLs that vary by case, or by redirect/rewrite).

E.g. http:/mysite/Hello.html and http://mysite/hello.html should both serve the same file.

Here's the config.ru (from Octopress distrib):

require 'bundler/setup'
require 'sinatra/base'
require 'rack'
require 'rack/rewrite'

# The project root directory
$root = ::File.dirname(__FILE__)

class SinatraStaticServer < Sinatra::Base  

  get(/.+/) do
    send_sinatra_file(request.path) {404}
  end

  not_found do
    send_sinatra_file('404.html') {"Sorry, I cannot find #{request.path}"}
  end

  def send_sinatra_file(path, &missing_file_block)
    file_path = File.join(File.dirname(__FILE__), 'public',  path)
    file_path = File.join(file_path, 'index.html') unless file_path =~ /\.[a-z]+$/i  
    File.exist?(file_path) ? send_file(file_path) : missing_file_block.call
  end

end

run SinatraStaticServer

Is there a way to do this using Rack or Sinatra? So far the furthest I've got is down-casing all files and using .downcase in send_sinatra_file.

Answer 1

Here is an idea for your routing:

get '/' do
  send_file(File.join(File.dirname(__FILE__), 'public', 'index.html'))
end

get '*' do
  file_path = File.join(File.dirname(__FILE__), 'public',  request.path.downcase)
  File.exist?(file_path) ? send_file(file_path) : halt 404
end

not_found do
  send_file(File.join(File.dirname(__FILE__), 'public', '404.html'))
end

This is untested, since I probably won't be able to reproduce your environment anyways. But I think that it would work for your purpose, assuming all your pages are lowercase (as you mentioned) and that you also have an actual 404.html page.