Module: Bundler::Thor::Base::ClassMethods
Relationships & Source Files | |
Defined in: | lib/bundler/vendor/thor/lib/thor/base.rb |
Instance Attribute Summary
-
#exit_on_failure? ⇒ Boolean
readonly
A flag that makes the process exit with status 1 if any error happens.
- #no_commands? ⇒ Boolean readonly
Instance Method Summary
-
#all_commands
(also: #all_tasks)
Returns the commands for this
::Bundler::Thor
class and all subclasses. -
#all_tasks
Alias for #all_commands.
-
#allow_incompatible_default_type!
If you want to use defaults that don’t match the type of an option, either specify
check_default_type: false
or callallow_incompatible_default_type!
. -
#argument(name, options = {})
Adds an argument to the class and creates an attr_accessor for it.
-
#arguments
Returns this class arguments, looking up in the ancestors chain.
-
#check_default_type!
If you want to raise an error when the default value of an option does not match the type call check_default_type! This will be the default; for compatibility a deprecation warning is issued if necessary.
-
#check_unknown_options!
If you want to raise an error for unknown options, call check_unknown_options! This is disabled by default to allow dynamic invocations.
-
#class_option(name, options = {})
Adds an option to the set of class options.
-
#class_options(options = nil)
Adds a bunch of options to the set of class options.
-
#commands
(also: #tasks)
Returns the commands for this
::Bundler::Thor
class. -
#group(name = nil)
Defines the group.
-
#handle_no_task_error(command, has_namespace = $thor_runner)
Alias for #handle_no_command_error.
-
#namespace(name = nil)
Sets the namespace for the
::Bundler::Thor
or::Bundler::Thor::Group
class. -
#no_commands(&block)
(also: #no_tasks)
readonly
All methods defined inside the given block are not added as commands.
- #no_commands_context
-
#no_tasks(&block)
Alias for #no_commands.
-
#public_command(*names)
(also: #public_task)
Allows to use private methods from parent in child classes as commands.
-
#public_task(*names)
Alias for #public_command.
-
#remove_argument(*names)
Removes a previous defined argument.
-
#remove_class_option(*names)
Removes a previous defined class option.
-
#remove_command(*names)
(also: #remove_task)
Removes a given command from this
::Bundler::Thor
class. -
#remove_task(*names)
Alias for #remove_command.
-
#start(given_args = ARGV, config = {})
Parses the command and options from the given args, instantiate the class and invoke the command.
-
#strict_args_position!
If you want only strict string args (useful when cascading thor classes), call strict_args_position! This is disabled by default to allow dynamic invocations.
-
#tasks
Alias for #commands.
-
#basename
protected
The basename of the program invoking the thor class.
-
#create_task(meth)
protected
Alias for #create_command.
-
#find_and_refresh_task(name)
protected
Alias for #find_and_refresh_command.
-
#from_superclass(method, default = nil)
protected
Retrieves a value from superclass.
-
#inherited(klass)
protected
Everytime someone inherits from a
::Bundler::Thor
class, register the klass and file into baseclass. -
#method_added(meth)
protected
Fire this callback whenever a method is added.
-
#print_options(shell, options, group_name = nil)
protected
Receives a set of options and print them.
- #attr_accessor Internal use only
- #attr_reader Internal use only
- #attr_writer Internal use only
- #check_default_type Internal use only
- #check_unknown_options Internal use only
- #check_unknown_options?(config) ⇒ Boolean Internal use only
-
#disable_required_check?(command_name) ⇒ Boolean
Internal use only
If true, option set will not suspend the execution of the command when a required option is not provided.
- #handle_argument_error(command, error, args, arity) Internal use only
- #handle_no_command_error(command, has_namespace = $thor_runner) (also: #handle_no_task_error) Internal use only
-
#stop_on_unknown_option?(command_name) ⇒ Boolean
Internal use only
If true, option parsing is suspended as soon as an unknown option or a regular argument is encountered.
- #strict_args_position Internal use only
- #strict_args_position?(config) ⇒ Boolean Internal use only
-
#baseclass
protected
Internal use only
SIGNATURE: Sets the baseclass.
-
#build_option(name, options, scope)
protected
Internal use only
Build an option and adds it to the given scope.
-
#build_options(options, scope)
protected
Internal use only
Receives a hash of options, parse them and add to the scope.
-
#class_options_help(shell, groups = {})
protected
Internal use only
Prints the class options per group.
-
#create_command(meth)
(also: #create_task)
protected
Internal use only
SIGNATURE: Creates a new command if valid_command? is true.
-
#dispatch(command, given_args, given_opts, config)
protected
Internal use only
SIGNATURE: The hook invoked by start.
-
#find_and_refresh_command(name)
(also: #find_and_refresh_task)
protected
Internal use only
Finds a command with the given name.
-
#initialize_added
protected
Internal use only
SIGNATURE: Defines behavior when the initialize method is added to the class.
-
#is_thor_reserved_word?(word, type) ⇒ Boolean
protected
Internal use only
Raises an error if the word given is a
::Bundler::Thor
reserved word.
Instance Attribute Details
#exit_on_failure? ⇒ Boolean
(readonly)
A flag that makes the process exit with status 1 if any error happens.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 529
def exit_on_failure? Bundler::Thor.deprecation_warning "Bundler::Thor exit with status 0 on errors. To keep this behavior, you must define `exit_on_failure?` in `#{self.name}`" false end
#no_commands? ⇒ Boolean
(readonly)
[ GitHub ]
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 441
def no_commands? no_commands_context.entered? end
Instance Method Details
#all_commands Also known as: #all_tasks
Returns the commands for this ::Bundler::Thor
class and all subclasses.
Returns
- Hash
-
An ordered hash with commands names as keys and
::Bundler::Thor::Command
objects as values.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 383
def all_commands @all_commands ||= from_superclass(:all_commands, Hash.new) @all_commands.merge!(commands) end
#all_tasks
Alias for #all_commands.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 387
alias_method :all_tasks, :all_commands
#allow_incompatible_default_type!
If you want to use defaults that don’t match the type of an option, either specify check_default_type: false
or call allow_incompatible_default_type!
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 173
def allow_incompatible_default_type! @check_default_type = false end
#argument(name, options = {})
Adds an argument to the class and creates an attr_accessor for it.
::Bundler::Thor::Arguments
are different from options in several aspects. The first one is how they are parsed from the command line, arguments are retrieved from position:
thor command NAME
Instead of:
thor command --name=NAME
Besides, arguments are used inside your code as an accessor (self.argument), while options are all kept in a hash (self.options).
Finally, arguments cannot have type :default
or :boolean
but can be optional (supplying :optional
=> :true
or :required
=> false), although you cannot have a required argument after a non-required argument. If you try it, an error is raised.
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. :optional
- If the argument is optional or not. :type
- The type of the argument, can be :string
, :hash
, :array
, :numeric
. :default
- Default value for this argument. It cannot be required and have default values. :banner
- String to show on usage notes.
Errors
- ArgumentError
-
Raised if you supply a required argument after a non required one.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 245
def argument(name, = {}) is_thor_reserved_word?(name, :argument) no_commands { attr_accessor name } required = if .key?(:optional) ! [:optional] elsif .key?(:required) [:required] else [:default].nil? end remove_argument name if required arguments.each do |argument| next if argument.required? raise ArgumentError, "You cannot have #{name.to_s.inspect} as required argument after " \ "the non-required argument #{argument.human_name.inspect}." end end [:required] = required arguments << Bundler::Thor::Argument.new(name, ) end
#arguments
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 277
def arguments @arguments ||= from_superclass(:arguments, []) end
#attr_accessor
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 146
def attr_accessor(*) #:nodoc: no_commands { super } end
#attr_reader
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 138
def attr_reader(*) #:nodoc: no_commands { super } end
#attr_writer
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 142
def attr_writer(*) #:nodoc: no_commands { super } end
#baseclass (protected)
SIGNATURE: Sets the baseclass. This is where the superclass lookup finishes.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 679
def baseclass #:nodoc: end
#basename (protected)
The basename of the program invoking the thor class.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 673
def basename File.basename($PROGRAM_NAME).split(" ").first end
#build_option(name, options, scope) (protected)
Build an option and adds it to the given scope.
Parameters
- name<Symbol>
-
The name of the argument.
- options<Hash>
-
Described in both class_option and method_option.
- scope<Hash>
-
::Bundler::Thor::Options
hash that is being built up
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 590
def build_option(name, , scope) #:nodoc: scope[name] = Bundler::Thor::Option.new(name, {:check_default_type => check_default_type}.merge!( )) end
#build_options(options, scope) (protected)
Receives a hash of options, parse them and add to the scope. This is a fast way to set a bunch of options:
:foo => true, : => :required, :baz => :string
Parameters
Hash[Symbol => Object]
#check_default_type
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 177
def check_default_type #:nodoc: @check_default_type = from_superclass(:check_default_type, nil) unless defined?(@check_default_type) @check_default_type end
#check_default_type!
If you want to raise an error when the default value of an option does not match the type call check_default_type! This will be the default; for compatibility a deprecation warning is issued if necessary.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 167
def check_default_type! @check_default_type = true end
#check_unknown_options
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 156
def #:nodoc: @check_unknown_options ||= from_superclass(:, false) end
#check_unknown_options!
If you want to raise an error for unknown options, call check_unknown_options! This is disabled by default to allow dynamic invocations.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 152
def @check_unknown_options = true end
#check_unknown_options?(config) ⇒ Boolean
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 160
def (config) #:nodoc: !! end
#class_option(name, options = {})
Adds an option to the set of class options
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.
- :group
-
– The group for this options. Use by class options to output options in different levels.
- :aliases
-
– Aliases for this option. Note:
::Bundler::Thor
follows a convention of one-dash-one-letter options. Thus aliases like “-something” wouldn’t be parsed; use either “--something” or “-s” instead. - :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 'lib/bundler/vendor/thor/lib/thor/base.rb', line 312
def class_option(name, = {}) build_option(name, , ) end
#class_options(options = nil)
Adds a bunch of options to the set of class options.
:foo => false, : => :required, :baz => :string
If you prefer more detailed declaration, check class_option.
Parameters
Hash[Symbol => Object]
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 290
def ( = nil) @class_options ||= from_superclass(:, {}) (, @class_options) if @class_options end
#class_options_help(shell, groups = {}) (protected)
Prints the class options per group. If an option does not belong to any group, it’s printed as Class option.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 539
def (shell, groups = {}) #:nodoc: # Group options by group .each do |_, value| groups[value.group] ||= [] groups[value.group] << value end # Deal with default group = groups.delete(nil) || [] (shell, ) # Print all others groups.each do |group_name, | (shell, , group_name) end end
#commands Also known as: #tasks
Returns the commands for this ::Bundler::Thor
class.
Returns
- Hash
-
An ordered hash with commands names as keys and
::Bundler::Thor::Command
objects as values.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 372
def commands @commands ||= Hash.new end
#create_command(meth) (protected) Also known as: #create_task
SIGNATURE: Creates a new command if valid_command? is true. This method is called when a new method is added to the class.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 684
def create_command(meth) #:nodoc: end
#create_task(meth) (protected)
Alias for #create_command.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 686
alias_method :create_task, :create_command
#disable_required_check?(command_name) ⇒ Boolean
If true, option set will not suspend the execution of the command when a required option is not provided.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 191
def disable_required_check?(command_name) #:nodoc: false end
#dispatch(command, given_args, given_opts, config) (protected)
SIGNATURE: The hook invoked by start.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 694
def dispatch(command, given_args, given_opts, config) #:nodoc: raise NotImplementedError end
#find_and_refresh_command(name) (protected) Also known as: #find_and_refresh_task
Finds a command with the given name. If the command belongs to the current class, just return it, otherwise dup it and add the fresh copy to the current command hash.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 610
def find_and_refresh_command(name) #:nodoc: if commands[name.to_s] commands[name.to_s] elsif command = all_commands[name.to_s] # rubocop:disable AssignmentInCondition commands[name.to_s] = command.clone else raise ArgumentError, "You supplied :for => #{name.inspect}, but the command #{name.inspect} could not be found." end end
#find_and_refresh_task(name) (protected)
Alias for #find_and_refresh_command.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 619
alias_method :find_and_refresh_task, :find_and_refresh_command
#from_superclass(method, default = nil) (protected)
Retrieves a value from superclass. If it reaches the baseclass, returns default.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 651
def from_superclass(method, default = nil) if self == baseclass || !superclass.respond_to?(method, true) default else value = superclass.send(method) # Ruby implements `dup` on Object, but raises a `TypeError` # if the method is called on immediates. As a result, we # don't have a good way to check whether dup will succeed # without calling it and rescuing the TypeError. begin value.dup rescue TypeError value end end end
#group(name = nil)
Defines the group. This is used when thor list is invoked so you can specify that only commands from a pre-defined group will be shown. Defaults to standard.
Parameters
name<String|Symbol>
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 358
def group(name = nil) if name @group = name.to_s else @group ||= from_superclass(:group, "standard") end end
#handle_argument_error(command, error, args, arity)
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 519
def handle_argument_error(command, error, args, arity) #:nodoc: name = [command.ancestor_name, command.name].compact.join(" ") msg = "ERROR: \"#{basename} #{name}\" was called with ".dup msg << "no arguments" if args.empty? msg << "arguments " << args.inspect unless args.empty? msg << "\nUsage: \"#{ (command).split("\n").join("\"\n \"")}\"" raise InvocationError, msg end
#handle_no_command_error(command, has_namespace = $thor_runner) Also known as: #handle_no_task_error
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 514
def handle_no_command_error(command, has_namespace = $thor_runner) #:nodoc: raise UndefinedCommandError.new(command, all_commands.keys, (namespace if has_namespace)) end
#handle_no_task_error(command, has_namespace = $thor_runner)
Alias for #handle_no_command_error.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 517
alias_method :handle_no_task_error, :handle_no_command_error
#inherited(klass) (protected)
Everytime someone inherits from a ::Bundler::Thor
class, register the klass and file into baseclass.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 623
def inherited(klass) super(klass) Bundler::Thor::Base.register_klass_file(klass) klass.instance_variable_set(:@no_commands, 0) end
#initialize_added (protected)
SIGNATURE: Defines behavior when the initialize method is added to the class.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 690
def initialize_added #:nodoc: end
#is_thor_reserved_word?(word, type) ⇒ Boolean
(protected)
Raises an error if the word given is a ::Bundler::Thor
reserved word.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 579
def is_thor_reserved_word?(word, type) #:nodoc: return false unless THOR_RESERVED_WORDS.include?(word.to_s) raise "#{word.inspect} is a Bundler::Thor reserved word and cannot be defined as #{type}" end
#method_added(meth) (protected)
Fire this callback whenever a method is added. Added methods are tracked as commands by invoking the create_command method.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 631
def method_added(meth) super(meth) meth = meth.to_s if meth == "initialize" initialize_added return end # Return if it's not a public instance method return unless public_method_defined?(meth.to_sym) return if no_commands? || !create_command(meth) is_thor_reserved_word?(meth, :command) Bundler::Thor::Base.register_klass_file(self) end
#namespace(name = nil)
Sets the namespace for the ::Bundler::Thor
or ::Bundler::Thor::Group
class. By default the namespace is retrieved from the class name. If your ::Bundler::Thor
class is named Scripts::MyScript
, the help method, for example, will be called as:
thor scripts:my_script -h
If you change the namespace:
namespace :my_scripts
You change how your commands are invoked:
thor my_scripts -h
Finally, if you change your namespace to default:
namespace :default
Your commands can be invoked with a shortcut. Instead of:
thor :my_command
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 467
def namespace(name = nil) if name @namespace = name.to_s else @namespace ||= Bundler::Thor::Util.namespace_from_thor_class(self) end end
#no_commands(&block) (readonly) Also known as: #no_tasks
All methods defined inside the given block are not added as commands.
So you can do:
class MyScript < Bundler::Thor
no_commands do
def this_is_not_a_command
end
end
end
You can also add the method and remove it from the command list:
class MyScript < Bundler::Thor
def this_is_not_a_command
end
remove_command :this_is_not_a_command
end
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 431
def no_commands(&block) no_commands_context.enter(&block) end
#no_commands_context
[ GitHub ]# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 437
def no_commands_context @no_commands_context ||= NestedContext.new end
#no_tasks(&block)
Alias for #no_commands.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 435
alias_method :no_tasks, :no_commands
#print_options(shell, options, group_name = nil) (protected)
Receives a set of options and print them.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 557
def (shell, , group_name = nil) return if .empty? list = [] padding = .map { |o| o.aliases.size }.max.to_i * 4 .each do |option| next if option.hide item = [option.usage(padding)] item.push(option.description ? "# #{option.description}" : "") list << item list << ["", "# Default: #{option.default}"] if option.show_default? list << ["", "# Possible values: #{option.enum.join(', ')}"] if option.enum end shell.say(group_name ? "#{group_name} options:" : "Options:") shell.print_table(list, :indent => 2) shell.say "" end
#public_command(*names) Also known as: #public_task
Allows to use private methods from parent in child classes as commands.
Parameters
names<Array>:: Method names to be used as commands
Examples
public_command :foo
public_command :foo, :, :baz
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 507
def public_command(*names) names.each do |name| class_eval "def #{name}(*); super end" end end
#public_task(*names)
Alias for #public_command.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 512
alias_method :public_task, :public_command
#remove_argument(*names)
Removes a previous defined argument. If :undefine
is given, undefine accessors as well.
Parameters
- names<Array>
-
::Bundler::Thor::Arguments
to be removed
Examples
remove_argument :foo
remove_argument :foo, :, :baz, :undefine => true
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 327
def remove_argument(*names) = names.last.is_a?(Hash) ? names.pop : {} names.each do |name| arguments.delete_if { |a| a.name == name.to_s } undef_method name, "#{name}=" if [:undefine] end end
#remove_class_option(*names)
Removes a previous defined class option.
Parameters
- names<Array>
-
Class options to be removed
Examples
remove_class_option :foo
remove_class_option :foo, :, :baz
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 346
def remove_class_option(*names) names.each do |name| .delete(name) end end
#remove_command(*names) Also known as: #remove_task
Removes a given command from this ::Bundler::Thor
class. This is usually done if you are inheriting from another class and don’t want it to be available anymore.
By default it only remove the mapping to the command. But you can supply :undefine
=> true to undefine the method from the class as well.
Parameters
- name<Symbol|String>
-
The name of the command to be removed
- options<Hash>
-
You can give
:undefine
=> true if you want commands the method to be undefined from the class as well.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 401
def remove_command(*names) = names.last.is_a?(Hash) ? names.pop : {} names.each do |name| commands.delete(name.to_s) all_commands.delete(name.to_s) undef_method name if [:undefine] end end
#remove_task(*names)
Alias for #remove_command.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 410
alias_method :remove_task, :remove_command
#start(given_args = ARGV, config = {})
Parses the command and options from the given args, instantiate the class and invoke the command. This method is used when the arguments must be parsed from an array. If you are inside Ruby and want to use a ::Bundler::Thor
class, you can simply initialize it:
script = MyScript.new(args, , config)
script.invoke(:command, first_arg, second_arg, third_arg)
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 483
def start(given_args = ARGV, config = {}) config[:shell] ||= Bundler::Thor::Base.shell.new dispatch(nil, given_args.dup, nil, config) rescue Bundler::Thor::Error => e config[:debug] || ENV["THOR_DEBUG"] == "1" ? (raise e) : config[:shell].error(e. ) exit(false) if exit_on_failure? rescue Errno::EPIPE # This happens if a thor command is piped to something like `head`, # which closes the pipe when it's done reading. This will also # mean that if the pipe is closed, further unnecessary # computation will not occur. exit(true) end
#stop_on_unknown_option?(command_name) ⇒ Boolean
If true, option parsing is suspended as soon as an unknown option or a regular argument is encountered. All remaining arguments are passed to the command as regular arguments.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 185
def stop_on_unknown_option?(command_name) #:nodoc: false end
#strict_args_position
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 202
def strict_args_position #:nodoc: @strict_args_position ||= from_superclass(:strict_args_position, false) end
#strict_args_position!
If you want only strict string args (useful when cascading thor classes), call strict_args_position! This is disabled by default to allow dynamic invocations.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 198
def strict_args_position! @strict_args_position = true end
#strict_args_position?(config) ⇒ Boolean
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 206
def strict_args_position?(config) #:nodoc: !!strict_args_position end
#tasks
Alias for #commands.
# File 'lib/bundler/vendor/thor/lib/thor/base.rb', line 375
alias_method :tasks, :commands