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)
  $stdin.binmode
  serve app
end

.send_body(body) ⇒ Object


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# File 'lib/rack/handler/cgi.rb', line 55

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 44

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 12

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

  env = ENV.to_hash
  env.delete "HTTP_CONTENT_LENGTH"

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

  env.update({"rack.version" => Rack::VERSION,
               "rack.input" => Rack::RewindableInput.new($stdin),
               "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"] ||= "/"

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