Class: Rack::Handler::CGI

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/handler/cgi.rb

Class Method Summary collapse

Class Method Details

.run(app, options = nil) ⇒ Object 



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# File 'lib/rack/handler/cgi.rb', line 7

def self.run(app, options=nil)
  serve app
end

.send_body(body) ⇒ Object 



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# File 'lib/rack/handler/cgi.rb', line 60

def self.send_body(body)
  body.each { |part|
    STDOUT.print part
    STDOUT.flush
  }
end

.send_headers(status, headers) ⇒ Object 



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# File 'lib/rack/handler/cgi.rb', line 49

def self.send_headers(status, headers)
  STDOUT.print "Status: #{status}\r\n"
  headers.each { |k, vs|
    vs.split("\n").each { |v|
      STDOUT.print "#{k}: #{v}\r\n"
    }
  }
  STDOUT.print "\r\n"
  STDOUT.flush
end

.serve(app) ⇒ Object 



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# File 'lib/rack/handler/cgi.rb', line 11

def self.serve(app)
  app = ContentLength.new(app)

  env = ENV.to_hash
  env.delete "HTTP_CONTENT_LENGTH"

  env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"

  rack_input = RewindableInput.new($stdin)

  env.update({"rack.version" => [1,0],
               "rack.input" => rack_input,
               "rack.errors" => $stderr,

               "rack.multithread" => false,
               "rack.multiprocess" => true,
               "rack.run_once" => true,

               "rack.url_scheme" => ["yes", "on", "1"].include?(ENV["HTTPS"]) ? "https" : "http"
             })

  env["QUERY_STRING"] ||= ""
  env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
  env["REQUEST_PATH"] ||= "/"

  begin
    status, headers, body = app.call(env)
    begin
      send_headers status, headers
      send_body body
    ensure
      body.close  if body.respond_to? :close
    end
  ensure
    rack_input.close
  end
end