Class: Templater::CLI::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/templater/cli/generator.rb

Instance Method Summary collapse

Constructor Details

#initialize(generator_name, generator_class, destination_root, name, version) ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/templater/cli/generator.rb', line 7

def initialize(generator_name, generator_class, destination_root, name, version)
  @generator_name = generator_name
  @destination_root = destination_root
  @generator_class = generator_class
  @name = name
  @version = version
end

Instance Method Details

#help ⇒ Object

outputs a helpful message and quits



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# File 'lib/templater/cli/generator.rb', line 21

def help
  puts "Usage: #{@name} #{@generator_name} [options] [args]"
  puts ''
  puts @generator_class.desc
  puts ''
  puts @options[:opts]
  puts ''
  exit
end

#run(arguments) ⇒ Object 



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# File 'lib/templater/cli/generator.rb', line 31

def run(arguments)
  generator_class = @generator_class # FIXME: closure wizardry, there has got to be a better way than this?
  
  @options = Templater::CLI::Parser.parse(arguments) do |opts, options|
    opts.separator "Options specific for this generator:"
    # the reason this is reversed is so that the 'main' generator will always have the last word
    # on the description of the option
    generator_class.generators.reverse.each do |generator|
      # Loop through this generator's options and add them as valid command line options
      # so that they show up in help messages and such
      generator.options.each do |option|
        name = option.name.to_s.gsub('_', '-')
        if option.options[:as] == :boolean
          opts.on("--#{name}", option.options[:desc]) do |s|
            options[option.name] = s
          end
        else
          opts.on("--#{name}=value", option.options[:desc]) do |s|
            options[option.name] = s.gsub('-', '_').to_sym
          end
        end
      end
    end
  end

  self.help if @options[:help]
  self.version if @options[:version]

  # Try to instantiate a generator, if the arguments to it were incorrect: show a help message
  begin
    @generator = @generator_class.new(@destination_root, @options, *arguments)
  rescue Templater::ArgumentError => e
    if @options[:debug]
      raise e
    else
      self.help
    end
  end

  if @options[:pretend] 
    puts "Generating with #{@generator_name} generator (just pretending):"
  else
    puts "Generating with #{@generator_name} generator:" 
  end
  step_through_templates

  # Run hooks
  @generator.after_run
  @generator.after_generation unless @options[:delete]
  @generator.after_deletion   if     @options[:delete]
end

#step_through_templates ⇒ Object 



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# File 'lib/templater/cli/generator.rb', line 83

def step_through_templates
  @generator.all_actions.each do |action|
    if @options[:delete]
      action.revoke! unless @options[:pretend]
      say_status('deleted', action, :red)
    else
      if action.identical?
        say_status('identical', action, :blue)
      elsif action.exists?
        if @options[:force]
          action.invoke! unless @options[:pretend]
          say_status('forced', action, :yellow)
        elsif @options[:skip]
          say_status('skipped', action, :yellow)
        else
          say_status('conflict', action, :red)
          conflict_menu(action)
        end
      else
        action.invoke! unless @options[:pretend]
        say_status('added', action, :green)
      end
    end
  end
end

#version ⇒ Object 



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# File 'lib/templater/cli/generator.rb', line 15

def version
  puts @version
  exit
end