Class: Bijou::CGI::Adapter

Inherits:
Object
  • Object
show all
Defined in:
lib/bijou/cgi/adapter.rb

Overview

This adapter encapsulates the differences between the CGI and the interfaces expected within the Bijou environment.

Class Method Summary collapse

Class Method Details

.diagnostic(message, diagnostic) ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 143

def self.diagnostic(message, diagnostic)
  print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"

  puts '<html><h1>500 Internal server error</h1>' +
    "<h3>#{message}</h3>" +
    "<pre>#{::CGI::escapeHTML(diagnostic)}</pre>" +
    '</html>'
  return nil
end

.error(message) ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 134

def self.error(message)
  print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"

  puts '<html><h1>500 Internal server error</h1>' +
    "<p>#{message}</p>" +
    '</html>'
  return nil
end

.formatted_error(title, message) ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 153

def self.formatted_error(title, message)
  print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"
  puts '<html>'
  puts '<head><title>Bijou Error</title>'
  puts '<style type="text/css">'
  puts Bijou::ErrorFormatterHTML.style
  puts '</style>'
  puts '</head>'
  puts '<body>'
  puts "<h1>#{title}</h1>"
  puts message
  puts '</body>'
  puts '</html>'
  return nil
end

.handle ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 18

def self.handle
  t0 = Time.now

  # Use binmode so CR\LF pairs aren't translated on Windows.
  $stdout.binmode if defined? $stdout.binmode

  #
  # Initialize the configuration.
  #

  document_root = ENV['DOCUMENT_ROOT']

  # The document root must be specified.
  if !FileTest.directory?(document_root)
    return self::error("The document root is invalid. " +
                       "Please check the CGI configuration.")
  end

  path_info = ENV['PATH_INFO']
  bijou_cache = ENV['BIJOU_CACHE']
  bijou_config = ENV['BIJOU_CONFIG']

  if bijou_config
    begin
      config = Bijou::Config.load_file(bijou_config)
    rescue SyntaxError
      error = $!.to_s
      error << "\nStack: " + $@.join("\n")

      return self::diagnostic("Error loading configuration.", error)
    end

    if (!config)
      return self::error("The configuration file path is invalid. " +
                         "Please check the CGI configuration.")
    end
  else
    config = Bijou::Config.new
  end

  # The CGI value is always used for the document root because the 
  # server may have expectations about it.
  config.document_root = document_root

  # The config file overrides the CGI cache root value
  if !config.cache_root && bijou_cache
    config.cache_root = bijou_cache
  end

  config.includes.each do |inc|
    $:.push inc
  end

  #
  # Load the requested page.
  #

  processor = Bijou::Processor.new

  # Build the page from the request.
  begin
    context = processor.load(path_info, config)
  rescue Exception
    msg = Bijou::ErrorFormatter.format_error :html, 4
    return self.formatted_error("Error loading page", msg)
  end

  #
  # Prepare the request data.
  #

  context.request = Bijou::CGI::Request.new(true)
  context.response = HttpResponse.new

  args = {}
  args.replace(context.request.params);

  #
  # Handle the request.
  #

  begin
    context.render(args)
  rescue EndRequest
    # Normal end request; possibly a redirect.
  rescue Exception
    msg = Bijou::ErrorFormatter.format_error :html, 4, context
    return self.formatted_error("Error rendering page", msg)
  end

  #
  # Return the response.
  #

  # print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"
  print context.response.render_headers

  if !context.response.suppress_content
    puts context.output

    if config.debug
      t1 = Time.now

      # self.print_request(context)
      # self.print_environment

      puts "<pre>" + "Time: #{t1 - t0}"
      puts "Log:"
      puts ::CGI.escapeHTML(context.get_log)
      puts "Trace:"
      puts ::CGI.escapeHTML(context.get_trace)
      puts "</pre>"
    end
  end
end

.print_environment ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 169

def self.print_environment()
  #        print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"
  #        print "Hello, world!"
  #        puts $:

  print "<pre>" +
    ::CGI::escapeHTML(
                      ENV.collect() do |key, value|
                        key + " --> " + value + "\n"
                      end.join("")
                      ) +
    "</pre>"
end

.print_request(context) ⇒ Object 



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# File 'lib/bijou/cgi/adapter.rb', line 183

def self.print_request(context)
  #        print "Content-Type: text/html; charset=iso-8859-1\r\n\r\n"
  #        print "Hello, world!"
  #        puts $:

  cgi = context.request.cgi

  print "<pre>" +
    ::CGI::escapeHTML(
                      "query: " + cgi.query_string.inspect + "\n" +
                      "form: " + cgi.form.inspect + "\n" +
                      "cookies: " + cgi.cookies.inspect + "\n" +
                      "params: " + cgi.params.inspect + "\n"
                      ) +
    "</pre>"
end