A really small image resizing rack application

gistfile1.rb

require 'rack'
require 'oil'

app = lambda do |env|
  r = Rack::Request.new(env)
  io = File.new(File.join('images', File.basename(r.path)), 'rb')
  body = Oil::JPEG.new(io, r[:w].to_i, r[:h].to_i)
  [200, { 'Content-Type' => 'image/jpeg' }, body]
end

run app