Class: Bijou::Console::Adapter

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

Overview

This adapter sets up an approximation of a web server environment, so that Bijou can be run from the command line. This permits simple testing and experimentation. It also allows for the use of certain debugging tools and techniques that would otherwise not be available.

Class Method Summary collapse

Class Method Details

.diagnostic(message, diagnostic) ⇒ Object 



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# File 'lib/bijou/console/adapter.rb', line 147

def self.diagnostic(message, diagnostic)
  puts "#{message}:\n#{diagnostic}"
  return nil
end

.error(message) ⇒ Object 



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# File 'lib/bijou/console/adapter.rb', line 142

def self.error(message)
  puts "error: #{message}"
  return nil
end

.handle ⇒ Object 



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# File 'lib/bijou/console/adapter.rb', line 20

def self.handle
  opts = GetoptLong.new(
    [ "--config" , "-c",            GetoptLong::OPTIONAL_ARGUMENT ],
    [ "--query",   "-q",            GetoptLong::REQUIRED_ARGUMENT ],
    [ "--help",    "-h", "-?",      GetoptLong::NO_ARGUMENT ]
  )

  debug = false
  t0 = Time.now

  document_root = ENV['DOCUMENT_ROOT']

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

  query_string = ''

  # process the parsed options
  opts.each do |opt, arg|
    case opt
    when '--config'
      bijou_config = arg
    when '--query'
      query_string = arg
    when '--help'
      return usage()
    end
  end

  if ARGV.length == 1
    path_info = ARGV[0]
  elsif !document_root
    puts "Missing document argument (try --help)"
    return 0
  end

  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.")
    end
  else
    config = Bijou::Config.new
  end

  # The config file overrides the environment settings.
  if !config.document_root || config.document_root.empty?
    if document_root
      config.document_root = document_root
    else
      config.document_root = Dir.getwd
    end
  end

  if !config.cache_root && bijou_cache
    config.cache_root = bijou_cache
  end

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

  # No need to defer trace render when outside of an HTTP environment.
  config.trace_buffer = false

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

  processor = Bijou::Processor.new

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

  #
  # Prepare the request data.
  #

  context.request = Bijou::Console::Request.new(query_string)
  context.response = Bijou::HttpResponse.new

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

  # Render the result of executing the page.
  begin
    context.render(args)
  rescue Exception
    msg = Bijou::ErrorFormatter.format_error :text, 4, context
    return self::diagnostic("Syntax error loading page", msg)
  end

  puts context.output;

  t3 = Time.now

  if debug 
    puts context.get_log

    if config.trace_level > 0
      # print_environment
      puts context.get_trace
    end
  end

end

.print_environment ⇒ Object 



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# File 'lib/bijou/console/adapter.rb', line 152

def self.print_environment()
  print ENV.collect() do |key, value|
    key + " --> " + value + "\n"
  end.join("")
end

.usage ⇒ Object 



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# File 'lib/bijou/console/adapter.rb', line 158

def self.usage()
  puts "Renders a Bijou console to stdout.\n\n"
  puts "#{File.basename($0)} filename\n\n"
  puts "  -h, --help         This help message"
  puts "  -c, --config file  Specify a config file"
  puts '  -q, --query args   Pass query string arguments (e.g, "a=1&b=2")'
end