activesupport_path = File.expand_path("../../../../activesupport/lib", __FILE__) $:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path) require "thor/group" require "rails/command" require "active_support" require "active_support/core_ext/object/blank" require "active_support/core_ext/kernel/singleton_class" require "active_support/core_ext/array/extract_options" require "active_support/core_ext/hash/deep_merge" require "active_support/core_ext/module/attribute_accessors" require "active_support/core_ext/string/inflections" module Rails module Generators include Rails::Command::Behavior autoload :Actions, "rails/generators/actions" autoload :ActiveModel, "rails/generators/active_model" autoload :Base, "rails/generators/base" autoload :Migration, "rails/generators/migration" autoload :NamedBase, "rails/generators/named_base" autoload :ResourceHelpers, "rails/generators/resource_helpers" autoload :TestCase, "rails/generators/test_case" mattr_accessor :namespace DEFAULT_ALIASES = { rails: { actions: "-a", orm: "-o", javascripts: "-j", javascript_engine: "-je", resource_controller: "-c", scaffold_controller: "-c", stylesheets: "-y", stylesheet_engine: "-se", scaffold_stylesheet: "-ss", template_engine: "-e", test_framework: "-t" }, test_unit: { fixture_replacement: "-r", } } DEFAULT_OPTIONS = { rails: { api: false, assets: true, force_plural: false, helper: true, integration_tool: nil, javascripts: true, javascript_engine: :js, orm: false, resource_controller: :controller, resource_route: true, scaffold_controller: :scaffold_controller, stylesheets: true, stylesheet_engine: :css, scaffold_stylesheet: true, test_framework: false, template_engine: :erb } } class << self def configure!(config) #:nodoc: api_only! if config.api_only no_color! unless config.colorize_logging aliases.deep_merge! config.aliases options.deep_merge! config.options fallbacks.merge! config.fallbacks templates_path.concat config.templates templates_path.uniq! hide_namespaces(*config.hidden_namespaces) end def templates_path #:nodoc: @templates_path ||= [] end def aliases #:nodoc: @aliases ||= DEFAULT_ALIASES.dup end def options #:nodoc: @options ||= DEFAULT_OPTIONS.dup end # Hold configured generators fallbacks. If a plugin developer wants a # generator group to fallback to another group in case of missing generators, # they can add a fallback. # # For example, shoulda is considered a test_framework and is an extension # of test_unit. However, most part of shoulda generators are similar to # test_unit ones. # # Shoulda then can tell generators to search for test_unit generators when # some of them are not available by adding a fallback: # # Rails::Generators.fallbacks[:shoulda] = :test_unit def fallbacks @fallbacks ||= {} end # Configure generators for API only applications. It basically hides # everything that is usually browser related, such as assets and session # migration generators, and completely disable helpers and assets # so generators such as scaffold won't create them. def api_only! hide_namespaces "assets", "helper", "css", "js" options[:rails].merge!( api: true, assets: false, helper: false, template_engine: nil ) if ARGV.first == "mailer" options[:rails].merge!(template_engine: :erb) end end # Remove the color from output. def no_color! Thor::Base.shell = Thor::Shell::Basic end # Returns an array of generator namespaces that are hidden. # Generator namespaces may be hidden for a variety of reasons. # Some are aliased such as "rails:migration" and can be # invoked with the shorter "migration", others are private to other generators # such as "css:scaffold". def hidden_namespaces @hidden_namespaces ||= begin orm = options[:rails][:orm] test = options[:rails][:test_framework] template = options[:rails][:template_engine] css = options[:rails][:stylesheet_engine] [ "rails", "resource_route", "#{orm}:migration", "#{orm}:model", "#{test}:controller", "#{test}:helper", "#{test}:integration", "#{test}:mailer", "#{test}:model", "#{test}:scaffold", "#{test}:view", "#{test}:job", "#{template}:controller", "#{template}:scaffold", "#{template}:mailer", "#{css}:scaffold", "#{css}:assets", "css:assets", "css:scaffold" ] end end def hide_namespaces(*namespaces) hidden_namespaces.concat(namespaces) end alias hide_namespace hide_namespaces # Show help message with available generators. def help(command = "generate") puts "Usage: rails #{command} GENERATOR [args] [options]" puts puts "General options:" puts " -h, [--help] # Print generator's options and usage" puts " -p, [--pretend] # Run but do not make any changes" puts " -f, [--force] # Overwrite files that already exist" puts " -s, [--skip] # Skip files that already exist" puts " -q, [--quiet] # Suppress status output" puts puts "Please choose a generator below." puts print_generators end def public_namespaces lookup! subclasses.map(&:namespace) end def print_generators sorted_groups.each { |b, n| print_list(b, n) } end def sorted_groups namespaces = public_namespaces namespaces.sort! groups = Hash.new { |h, k| h[k] = [] } namespaces.each do |namespace| base = namespace.split(":").first groups[base] << namespace end rails = groups.delete("rails") rails.map! { |n| n.sub(/^rails:/, "") } rails.delete("app") rails.delete("plugin") hidden_namespaces.each { |n| groups.delete(n.to_s) } [[ "rails", rails ]] + groups.sort.to_a end # Rails finds namespaces similar to Thor, it only adds one rule: # # Generators names must end with "_generator.rb". This is required because Rails # looks in load paths and loads the generator just before it's going to be used. # # find_by_namespace :webrat, :rails, :integration # # Will search for the following generators: # # "rails:webrat", "webrat:integration", "webrat" # # Notice that "rails:generators:webrat" could be loaded as well, what # Rails looks for is the first and last parts of the namespace. def find_by_namespace(name, base = nil, context = nil) #:nodoc: lookups = [] lookups << "#{base}:#{name}" if base lookups << "#{name}:#{context}" if context unless base || context unless name.to_s.include?(?:) lookups << "#{name}:#{name}" lookups << "rails:#{name}" end lookups << "#{name}" end lookup(lookups) namespaces = Hash[subclasses.map { |klass| [klass.namespace, klass] }] lookups.each do |namespace| klass = namespaces[namespace] return klass if klass end invoke_fallbacks_for(name, base) || invoke_fallbacks_for(context, name) end # Receives a namespace, arguments and the behavior to invoke the generator. # It's used as the default entry point for generate, destroy and update # commands. def invoke(namespace, args = ARGV, config = {}) names = namespace.to_s.split(":") if klass = find_by_namespace(names.pop, names.any? && names.join(":")) args << "--help" if args.empty? && klass.arguments.any?(&:required?) klass.start(args, config) else options = sorted_groups.flat_map(&:last) suggestions = options.sort_by { |suggested| levenshtein_distance(namespace.to_s, suggested) }.first(3) msg = "Could not find generator '#{namespace}'. " msg << "Maybe you meant #{ suggestions.map { |s| "'#{s}'" }.to_sentence(last_word_connector: " or ", locale: :en) }\n" msg << "Run `rails generate --help` for more options." puts msg end end private def print_list(base, namespaces) # :doc: namespaces = namespaces.reject { |n| hidden_namespaces.include?(n) } super end # Try fallbacks for the given base. def invoke_fallbacks_for(name, base) return nil unless base && fallbacks[base.to_sym] invoked_fallbacks = [] Array(fallbacks[base.to_sym]).each do |fallback| next if invoked_fallbacks.include?(fallback) invoked_fallbacks << fallback klass = find_by_namespace(name, fallback) return klass if klass end nil end def command_type # :doc: @command_type ||= "generator" end def lookup_paths # :doc: @lookup_paths ||= %w( rails/generators generators ) end def file_lookup_paths # :doc: @file_lookup_paths ||= [ "{#{lookup_paths.join(',')}}", "**", "*_generator.rb" ] end end end end