JezK
Edit File: thor.rb
require_relative "thor/base" class Bundler::Thor $thor_runner ||= false class << self # Allows for custom "Command" package naming. # # === Parameters # name<String> # options<Hash> # def package_name(name, _ = {}) @package_name = name.nil? || name == "" ? nil : name end # Sets the default command when thor is executed without an explicit command to be called. # # ==== Parameters # meth<Symbol>:: name of the default command # def default_command(meth = nil) if meth @default_command = meth == :none ? "help" : meth.to_s else @default_command ||= from_superclass(:default_command, "help") end end alias_method :default_task, :default_command # Registers another Bundler::Thor subclass as a command. # # ==== Parameters # klass<Class>:: Bundler::Thor subclass to register # command<String>:: Subcommand name to use # usage<String>:: Short usage for the subcommand # description<String>:: Description for the subcommand def register(klass, subcommand_name, usage, description, options = {}) if klass <= Bundler::Thor::Group desc usage, description, options define_method(subcommand_name) { |*args| invoke(klass, args) } else desc usage, description, options subcommand subcommand_name, klass end end # Defines the usage and the description of the next command. # # ==== Parameters # usage<String> # description<String> # options<String> # def desc(usage, description, options = {}) if options[:for] command = find_and_refresh_command(options[:for]) command.usage = usage if usage command.description = description if description else @usage = usage @desc = description @hide = options[:hide] || false end end # Defines the long description of the next command. # # ==== Parameters # long description<String> # def long_desc(long_description, options = {}) if options[:for] command = find_and_refresh_command(options[:for]) command.long_description = long_description if long_description else @long_desc = long_description end end # Maps an input to a command. If you define: # # map "-T" => "list" # # Running: # # thor -T # # Will invoke the list command. # # ==== Parameters # Hash[String|Array => Symbol]:: Maps the string or the strings in the array to the given command. # def map(mappings = nil, **kw) @map ||= from_superclass(:map, {}) if mappings && !kw.empty? mappings = kw.merge!(mappings) else mappings ||= kw end if mappings mappings.each do |key, value| if key.respond_to?(:each) key.each { |subkey| @map[subkey] = value } else @map[key] = value end end end @map end # Declares the options for the next command to be declared. # # ==== Parameters # Hash[Symbol => Object]:: The hash key is the name of the option and the value # is the type of the option. Can be :string, :array, :hash, :boolean, :numeric # or :required (string). If you give a value, the type of the value is used. # def method_options(options = nil) @method_options ||= {} build_options(options, @method_options) if options @method_options end alias_method :options, :method_options # Adds an option to the set of method options. If :for is given as option, # it allows you to change the options from a previous defined command. # # def previous_command # # magic # end # # method_option :foo => :bar, :for => :previous_command # # def next_command # # magic # end # # ==== Parameters # name<Symbol>:: The name of the argument. # options<Hash>:: Described below. # # ==== Options # :desc - Description for the argument. # :required - If the argument is required or not. # :default - Default value for this argument. It cannot be required and have default values. # :aliases - Aliases for this option. # :type - The type of the argument, can be :string, :hash, :array, :numeric or :boolean. # :banner - String to show on usage notes. # :hide - If you want to hide this option from the help. # def method_option(name, options = {}) scope = if options[:for] find_and_refresh_command(options[:for]).options else method_options end build_option(name, options, scope) end alias_method :option, :method_option # Prints help information for the given command. # # ==== Parameters # shell<Bundler::Thor::Shell> # command_name<String> # def command_help(shell, command_name) meth = normalize_command_name(command_name) command = all_commands[meth] handle_no_command_error(meth) unless command shell.say "Usage:" shell.say " #{banner(command).split("\n").join("\n ")}" shell.say class_options_help(shell, nil => command.options.values) if command.long_description shell.say "Description:" shell.print_wrapped(command.long_description, :indent => 2) else shell.say command.description end end alias_method :task_help, :command_help # Prints help information for this class. # # ==== Parameters # shell<Bundler::Thor::Shell> # def help(shell, subcommand = false) list = printable_commands(true, subcommand) Bundler::Thor::Util.thor_classes_in(self).each do |klass| list += klass.printable_commands(false) end list.sort! { |a, b| a[0] <=> b[0] } if defined?(@package_name) && @package_name shell.say "#{@package_name} commands:" else shell.say "Commands:" end shell.print_table(list, :indent => 2, :truncate => true) shell.say class_options_help(shell) end # Returns commands ready to be printed. def printable_commands(all = true, subcommand = false) (all ? all_commands : commands).map do |_, command| next if command.hidden? item = [] item << banner(command, false, subcommand) item << (command.description ? "# #{command.description.gsub(/\s+/m, ' ')}" : "") item end.compact end alias_method :printable_tasks, :printable_commands def subcommands @subcommands ||= from_superclass(:subcommands, []) end alias_method :subtasks, :subcommands def subcommand_classes @subcommand_classes ||= {} end def subcommand(subcommand, subcommand_class) subcommands << subcommand.to_s subcommand_class.subcommand_help subcommand subcommand_classes[subcommand.to_s] = subcommand_class define_method(subcommand) do |*args| args, opts = Bundler::Thor::Arguments.split(args) invoke_args = [args, opts, {:invoked_via_subcommand => true, :class_options => options}] invoke_args.unshift "help" if opts.delete("--help") || opts.delete("-h") invoke subcommand_class, *invoke_args end subcommand_class.commands.each do |_meth, command| command.ancestor_name = subcommand end end alias_method :subtask, :subcommand # Extend check unknown options to accept a hash of conditions. # # === Parameters # options<Hash>: A hash containing :only and/or :except keys def check_unknown_options!(options = {}) @check_unknown_options ||= {} options.each do |key, value| if value @check_unknown_options[key] = Array(value) else @check_unknown_options.delete(key) end end @check_unknown_options end # Overwrite check_unknown_options? to take subcommands and options into account. def check_unknown_options?(config) #:nodoc: options = check_unknown_options return false unless options command = config[:current_command] return true unless command name = command.name if subcommands.include?(name) false elsif options[:except] !options[:except].include?(name.to_sym) elsif options[:only] options[:only].include?(name.to_sym) else true end end # Stop parsing of options as soon as an unknown option or a regular # argument is encountered. All remaining arguments are passed to the command. # This is useful if you have a command that can receive arbitrary additional # options, and where those additional options should not be handled by # Bundler::Thor. # # ==== Example # # To better understand how this is useful, let's consider a command that calls # an external command. A user may want to pass arbitrary options and # arguments to that command. The command itself also accepts some options, # which should be handled by Bundler::Thor. # # class_option "verbose", :type => :boolean # stop_on_unknown_option! :exec # check_unknown_options! :except => :exec # # desc "exec", "Run a shell command" # def exec(*args) # puts "diagnostic output" if options[:verbose] # Kernel.exec(*args) # end # # Here +exec+ can be called with +--verbose+ to get diagnostic output, # e.g.: # # $ thor exec --verbose echo foo # diagnostic output # foo # # But if +--verbose+ is given after +echo+, it is passed to +echo+ instead: # # $ thor exec echo --verbose foo # --verbose foo # # ==== Parameters # Symbol ...:: A list of commands that should be affected. def stop_on_unknown_option!(*command_names) @stop_on_unknown_option = stop_on_unknown_option | command_names end def stop_on_unknown_option?(command) #:nodoc: command && stop_on_unknown_option.include?(command.name.to_sym) end # Disable the check for required options for the given commands. # This is useful if you have a command that does not need the required options # to work, like help. # # ==== Parameters # Symbol ...:: A list of commands that should be affected. def disable_required_check!(*command_names) @disable_required_check = disable_required_check | command_names end def disable_required_check?(command) #:nodoc: command && disable_required_check.include?(command.name.to_sym) end protected def stop_on_unknown_option #:nodoc: @stop_on_unknown_option ||= [] end # help command has the required check disabled by default. def disable_required_check #:nodoc: @disable_required_check ||= [:help] end # The method responsible for dispatching given the args. def dispatch(meth, given_args, given_opts, config) #:nodoc: # rubocop:disable MethodLength meth ||= retrieve_command_name(given_args) command = all_commands[normalize_command_name(meth)] if !command && config[:invoked_via_subcommand] # We're a subcommand and our first argument didn't match any of our # commands. So we put it back and call our default command. given_args.unshift(meth) command = all_commands[normalize_command_name(default_command)] end if command args, opts = Bundler::Thor::Options.split(given_args) if stop_on_unknown_option?(command) && !args.empty? # given_args starts with a non-option, so we treat everything as # ordinary arguments args.concat opts opts.clear end else args = given_args opts = nil command = dynamic_command_class.new(meth) end opts = given_opts || opts || [] config[:current_command] = command config[:command_options] = command.options instance = new(args, opts, config) yield instance if block_given? args = instance.args trailing = args[Range.new(arguments.size, -1)] instance.invoke_command(command, trailing || []) end # The banner for this class. You can customize it if you are invoking the # thor class by another ways which is not the Bundler::Thor::Runner. It receives # the command that is going to be invoked and a boolean which indicates if # the namespace should be displayed as arguments. # def banner(command, namespace = nil, subcommand = false) command.formatted_usage(self, $thor_runner, subcommand).split("\n").map do |formatted_usage| "#{basename} #{formatted_usage}" end.join("\n") end def baseclass #:nodoc: Bundler::Thor end def dynamic_command_class #:nodoc: Bundler::Thor::DynamicCommand end def create_command(meth) #:nodoc: @usage ||= nil @desc ||= nil @long_desc ||= nil @hide ||= nil if @usage && @desc base_class = @hide ? Bundler::Thor::HiddenCommand : Bundler::Thor::Command commands[meth] = base_class.new(meth, @desc, @long_desc, @usage, method_options) @usage, @desc, @long_desc, @method_options, @hide = nil true elsif all_commands[meth] || meth == "method_missing" true else puts "[WARNING] Attempted to create command #{meth.inspect} without usage or description. " \ "Call desc if you want this method to be available as command or declare it inside a " \ "no_commands{} block. Invoked from #{caller[1].inspect}." false end end alias_method :create_task, :create_command def initialize_added #:nodoc: class_options.merge!(method_options) @method_options = nil end # Retrieve the command name from given args. def retrieve_command_name(args) #:nodoc: meth = args.first.to_s unless args.empty? args.shift if meth && (map[meth] || meth !~ /^\-/) end alias_method :retrieve_task_name, :retrieve_command_name # receives a (possibly nil) command name and returns a name that is in # the commands hash. In addition to normalizing aliases, this logic # will determine if a shortened command is an unambiguous substring of # a command or alias. # # +normalize_command_name+ also converts names like +animal-prison+ # into +animal_prison+. def normalize_command_name(meth) #:nodoc: return default_command.to_s.tr("-", "_") unless meth possibilities = find_command_possibilities(meth) raise AmbiguousTaskError, "Ambiguous command #{meth} matches [#{possibilities.join(', ')}]" if possibilities.size > 1 if possibilities.empty? meth ||= default_command elsif map[meth] meth = map[meth] else meth = possibilities.first end meth.to_s.tr("-", "_") # treat foo-bar as foo_bar end alias_method :normalize_task_name, :normalize_command_name # this is the logic that takes the command name passed in by the user # and determines whether it is an unambiguous substrings of a command or # alias name. def find_command_possibilities(meth) len = meth.to_s.length possibilities = all_commands.merge(map).keys.select { |n| meth == n[0, len] }.sort unique_possibilities = possibilities.map { |k| map[k] || k }.uniq if possibilities.include?(meth) [meth] elsif unique_possibilities.size == 1 unique_possibilities else possibilities end end alias_method :find_task_possibilities, :find_command_possibilities def subcommand_help(cmd) desc "help [COMMAND]", "Describe subcommands or one specific subcommand" class_eval " def help(command = nil, subcommand = true); super; end " end alias_method :subtask_help, :subcommand_help end include Bundler::Thor::Base map HELP_MAPPINGS => :help desc "help [COMMAND]", "Describe available commands or one specific command" def help(command = nil, subcommand = false) if command if self.class.subcommands.include? command self.class.subcommand_classes[command].help(shell, true) else self.class.command_help(shell, command) end else self.class.help(shell, subcommand) end end end