Class: TechnoGate::TgCli::Main

Inherits:
Thor
  • Object
show all
Defined in:
lib/tg_cli/main.rb

Overview

Entrypoint for the Vagrant CLI. This class should never be initialized directly (like a typical Thor class). Instead, use Environment#cli to invoke the CLI.

# Defining Custom CLI Commands

If you’re looking to define custom CLI commands, then look at one of the two following classes:

  • Command::Base - Implementing a single command such as ‘vagrant up`, e.g. one without subcommands. Also take a look at Command::NamedBase.

  • Command::GroupBase - Implementing a command with subcommands, such as ‘vagrant box`, which has the `list`, `add`, etc. subcommands.

The above linked classes contain the main documentation for each type of command.

Class Method Summary collapse

Class Method Details

.register(klass, name, usage, description, opts = nil) ⇒ Object

Registers the given class with the CLI so it can be accessed. The class must be a subclass of either Command::Base or Command::GroupBase. Don’t call this method directly, instead call the Command::Base.register or Command::GroupBase.register methods.

Parameters:

  • klass (Class) —

    Command class

  • name (String) —

    Command name, accessed at ‘vagrant NAME`

  • usage (String) —

    Command usage, such as “vagrant NAME [–option]”

  • description (String) —

    Description of the command shown during the command listing.

  • opts (Hash) (defaults to: nil) —

    Other options (not gone into detail here, look at the source instead).



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# File 'lib/tg_cli/main.rb', line 36

def self.register(klass, name, usage, description, opts=nil)
  opts ||= {}

  if klass <= GroupBase
    # A subclass of GroupBase is a subcommand, since it contains
    # many smaller commands within it.
    desc usage, description, opts
    subcommand name, klass
  elsif klass <= Base
    # A subclass of Base is a single command, since it
    # is invoked as a whole (as Thor::Group)
    desc usage, description, opts
    define_method(name) { |*args| invoke klass, args }
  end

  if opts[:alias]
    # Alises are defined for this command, so properly alias the
    # newly defined method/subcommand:
    map opts[:alias] => name
  end

  if opts[:default]
    # This command is to be set as the default task.
    default_task name
  end
end