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



7
8
9
10
# File 'lib/rack/handler/cgi.rb', line 7

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

.send_body(body) ⇒ Object



55
56
57
58
59
60
# 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



44
45
46
47
48
49
50
51
52
53
# 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



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
# 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