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