class Pfm::Command::Generate

def self.banner 

def self.banner
  banner_headline + generator_list + "\n"
end

def self.banner_headline 

def self.banner_headline
  <<-E
 pfm generate GENERATOR [options]
ble generators:
end

def self.generator(name, class_name, description) 

def self.generator(name, class_name, description)
  generators << GeneratorCommand.new(name, class_name, description)
end

def self.generator_list 

def self.generator_list
  justify_size = generators.map { |g| g.name.size }.max + 2
  generators.map { |g| "  #{g.name.to_s.ljust(justify_size)}#{g.description}" }.join("\n")
end

def self.generators 

def self.generators
  @generators ||= []
end

def generator_for(arg) 

def generator_for(arg)
  self.class.generators.find { |g| g.name.to_s == arg }
end

def have_generator?(name) 

def have_generator?(name)
  self.class.generators.map { |g| g.name.to_s }.include?(name)
end

def initialize(*args) 

def initialize(*args)
  super
end

def needs_help?(params)

we delegate the request to the specified generator.
argument is a valid generator name, like `pfm generate cookbook -h`,
"--help". Here we override that behavior such that if the first
In the Base class, this is defined to be true if any args match "-h" or 
def needs_help?(params)
  return false if have_generator?(params[0])
  super
end

def run(params) 

def run(params)
  if generator_spec = generator_for(params[0])
    params.shift
    generator = GeneratorCommands.build(generator_spec.class_name, params)
    generator.run
  else
    msg(banner)
    1
  end
rescue OptionParser::InvalidOption, OptionParser::MissingArgument => e
  # Pfm::Command::Base also handles this error in the same way, but it
  # does not have access to the correct option parser, so it cannot print
  # the usage correctly. Therefore, invalid CLI usage needs to be handled
  # here.
  err("ERROR: #{e.message}\n")
  msg(generator.opt_parser)
  1
end