def call(env)
@request = Rack::Request.new(env)
@render_pdf = false
set_request_to_render_as_pdf(env) if render_as_pdf?
status, headers, response = @app.call(env)
if rendering_pdf? && headers['Content-Type'] =~ /text\/html|application\/xhtml\+xml/
body = response.respond_to?(:body) ? response.body : response.join
body = body.join if body.is_a?(Array)
body = PDFKit.new(translate_paths(body, env), @options).to_pdf
response = [body]
headers.delete('ETag')
headers.delete('Cache-Control')
headers["Content-Length"] = (body.respond_to?(:bytesize) ? body.bytesize : body.size).to_s
headers["Content-Type"] = "application/pdf"
end
[status, headers, response]
end