require "active_support" require "active_support/dependencies/autoload" require "active_support/core_ext/enumerable" require "active_support/core_ext/object/blank" require "active_support/core_ext/hash/transform_values" require "thor" module Rails module Command extend ActiveSupport::Autoload autoload :Behavior autoload :Base include Behavior HELP_MAPPINGS = %w(-h -? --help) class << self def hidden_commands # :nodoc: @hidden_commands ||= [] end def environment # :nodoc: ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development" end # Receives a namespace, arguments and the behavior to invoke the command. def invoke(full_namespace, args = [], **config) namespace = full_namespace = full_namespace.to_s if char = namespace =~ /:(\w+)$/ command_name, namespace = $1, namespace.slice(0, char) else command_name = namespace end command_name, namespace = "help", "help" if command_name.blank? || HELP_MAPPINGS.include?(command_name) command_name, namespace = "version", "version" if %w( -v --version ).include?(command_name) command = find_by_namespace(namespace, command_name) if command && command.all_commands[command_name] command.perform(command_name, args, config) else find_by_namespace("rake").perform(full_namespace, args, config) end end # Rails finds namespaces similar to Thor, it only adds one rule: # # Command names must end with "_command.rb". This is required because Rails # looks in load paths and loads the command just before it's going to be used. # # find_by_namespace :webrat, :rails, :integration # # Will search for the following commands: # # "rails:webrat", "webrat:integration", "webrat" # # Notice that "rails:commands:webrat" could be loaded as well, what # Rails looks for is the first and last parts of the namespace. def find_by_namespace(namespace, command_name = nil) # :nodoc: lookups = [ namespace ] lookups << "#{namespace}:#{command_name}" if command_name lookups.concat lookups.map { |lookup| "rails:#{lookup}" } lookup(lookups) namespaces = subclasses.index_by(&:namespace) namespaces[(lookups & namespaces.keys).first] end # Returns the root of the Rails engine or app running the command. def root if defined?(ENGINE_ROOT) Pathname.new(ENGINE_ROOT) elsif defined?(APP_PATH) Pathname.new(File.expand_path("../..", APP_PATH)) end end def print_commands # :nodoc: sorted_groups.each { |b, n| print_list(b, n) } end def sorted_groups # :nodoc: lookup! groups = (subclasses - hidden_commands).group_by { |c| c.namespace.split(":").first } groups.transform_values! { |commands| commands.flat_map(&:printing_commands).sort } rails = groups.delete("rails") [[ "rails", rails ]] + groups.sort.to_a end private def command_type # :doc: @command_type ||= "command" end def lookup_paths # :doc: @lookup_paths ||= %w( rails/commands commands ) end def file_lookup_paths # :doc: @file_lookup_paths ||= [ "{#{lookup_paths.join(',')}}", "**", "*_command.rb" ] end end end end