A dynamic command that handles method missing scenarios.
Shortcuts for help.
A command that is hidden in help messages but still invocable.
Bundler::Thor methods that should not be overwritten by the user.
Extend check unknown options to accept a hash of conditions.
options<Hash>: A hash containing :only and/or :except keys
# File bundler/vendor/thor/lib/thor.rb, line 255 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
Prints help information for the given command.
shell<Bundler::Thor::Shell> command_name<String>
# File bundler/vendor/thor/lib/thor.rb, line 172 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
Sets the default command when thor is executed without an explicit command to be called.
name of the default command
# File bundler/vendor/thor/lib/thor.rb, line 21 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
Defines the usage and the description of the next command.
usage<String> description<String> options<String>
# File bundler/vendor/thor/lib/thor.rb, line 54 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
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.
A list of commands that should be affected.
# File bundler/vendor/thor/lib/thor.rb, line 339 def disable_required_check!(*command_names) disable_required_check.merge(command_names) end
Prints help information for this class.
shell<Bundler::Thor::Shell>
# File bundler/vendor/thor/lib/thor.rb, line 195 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
Defines the long description of the next command.
long description<String>
# File bundler/vendor/thor/lib/thor.rb, line 71 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.
Maps the string or the strings in the array to the given command.
# File bundler/vendor/thor/lib/thor.rb, line 93 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
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
The name of the argument.
Described below.
: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.
# File bundler/vendor/thor/lib/thor.rb, line 155 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
Declares the options for the next command to be declared.
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.
# File bundler/vendor/thor/lib/thor.rb, line 121 def method_options(options = nil) @method_options ||= {} build_options(options, @method_options) if options @method_options end
Returns commands ready to be printed.
# File bundler/vendor/thor/lib/thor.rb, line 214 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
Registers another Bundler::Thor subclass as a command.
Bundler::Thor subclass to register
Subcommand name to use
Short usage for the subcommand
Description for the subcommand
# File bundler/vendor/thor/lib/thor.rb, line 37 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
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.
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
A list of commands that should be affected.
# File bundler/vendor/thor/lib/thor.rb, line 325 def stop_on_unknown_option!(*command_names) stop_on_unknown_option.merge(command_names) end
# File bundler/vendor/thor/lib/thor.rb, line 234 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
# File bundler/vendor/thor/lib/thor.rb, line 230 def subcommand_classes @subcommand_classes ||= {} end
# File bundler/vendor/thor/lib/thor.rb, line 225 def subcommands @subcommands ||= from_superclass(:subcommands, []) end
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.
# File bundler/vendor/thor/lib/thor.rb, line 484 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
# File bundler/vendor/thor/lib/thor.rb, line 499 def subcommand_help(cmd) desc "help [COMMAND]", "Describe subcommands or one specific subcommand" class_eval " def help(command = nil, subcommand = true); super; end " end
# File bundler/vendor/thor/lib/thor.rb, line 513 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