Class: Jets::Commands::Base

Inherits:
Thor
  • Object
show all
Defined in:
lib/jets/commands/base.rb

Direct Known Subclasses

Db, Dynamodb, Dynamodb::Migrate, Main

Class Method Summary collapse

Class Method Details

.autocomplete(full_command) ⇒ Object

If this fails to match then it’l just return the original full command



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# File 'lib/jets/commands/base.rb', line 129

def autocomplete(full_command)
  return nil if full_command.nil? # jets help

  eager_load!

  words = full_command.split(':')
  namespace = words[0..-2].join(':') if words.size > 1
  command = words.last

  # Thor's normalize_command_name autocompletes the command but then we need to add the namespace back
  begin
    thor_subclass = klass_from_namespace(namespace) # could NameError
    command = thor_subclass.normalize_command_name(command) # could Thor::AmbiguousCommandError
    [namespace, command].compact.join(':')
  rescue NameError
    full_command # return original full_command
  rescue Thor::AmbiguousCommandError => e
    puts "Unable to autodetect the command name. #{e.message}."
    full_command # return original full_command
  end
end

Use Jets banner instead of Thor to account for namespaces in commands.



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# File 'lib/jets/commands/base.rb', line 88

def banner(command, namespace = nil, subcommand = false)
  namespace = namespace_from_class(self)
  command_name = command.usage # set with desc when defining tht Thor class
  namespaced_command = [namespace, command_name].compact.join(':')

  "jets #{namespaced_command}"
end

.dispatch(command, given_args, given_opts, config) ⇒ Object

Hacky way to handle error for ‘jets new’ when no project name is passed in to avoid this error:

required arguments 'project_name' (Thor::RequiredArgumentMissingError)



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# File 'lib/jets/commands/base.rb', line 32

def dispatch(command, given_args, given_opts, config)
  if given_args.reject{|s| s =~ /^-/} == ['new'] # user forgot to pass a project name
    given_args = ['help', 'new']
  end
  super
end

.eager_load! ⇒ Object

Useful for help menu when we need to have all the definitions loaded. Using constantize instead of require so we dont care about order. The eager load actually uses autoloading.



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# File 'lib/jets/commands/base.rb', line 55

def eager_load!
  path = File.expand_path("../../", __FILE__)
  Dir.glob("#{path}/commands/**/*.rb").select do |path|
    next if !File.file?(path) or path =~ /templates/ or path =~ %r{/markdown/}

    class_name = path
                  .sub(/\.rb$/,'')
                  .sub(%r{.*/jets/commands}, 'jets/commands')
                  .classify
    class_name.sub!(/Task$/, "Tasks") # special rule here for Tasks class
    # NOTE: Weird thing where Jets::Commands::Db::Task => Thor::Command
    # because Task is a class available to Thor I believe.
    puts "eager_load! loading path: #{path} class_name: #{class_name}" if ENV['DEBUG']
    class_name.constantize # dont have to worry about order.
  end
end

.help_list(all = false) ⇒ Object 



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# File 'lib/jets/commands/base.rb', line 101

def help_list(all=false)
  # hack to show hidden comands when requested
  Thor::HiddenCommand.class_eval do
    def hidden?; false; end
  end if all

  list = []
  eager_load!
  subclasses.each do |klass|
    commands = klass.printable_commands(true, false)
    commands.reject! { |array| array[0].include?(':help') }
    list += commands
  end

  list.sort_by! { |array| array[0] }
end

.inherited(base) ⇒ Object 



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# File 'lib/jets/commands/base.rb', line 44

def inherited(base)
  super

  if base.name
    self.subclasses << base
  end
end

.klass_from_namespace(namespace) ⇒ Object 



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# File 'lib/jets/commands/base.rb', line 118

def klass_from_namespace(namespace)
  if namespace.nil?
    Jets::Commands::Main
  else
    class_name = namespace.gsub(':','/')
    class_name = "Jets::Commands::#{class_name.classify}"
    class_name.constantize
  end
end

.namespace_from_class(klass) ⇒ Object 



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# File 'lib/jets/commands/base.rb', line 96

def namespace_from_class(klass)
  namespace = klass.to_s.sub('Jets::Commands::', '').underscore.gsub('/',':')
  namespace unless namespace == "main"
end

.namespaced_commands ⇒ Object

Fully qualifed task names. Examples:

build
process:controller
dynamodb:migrate:down



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# File 'lib/jets/commands/base.rb', line 76

def namespaced_commands
  eager_load!
  subclasses.map do |klass|
    klass.all_tasks.keys.map do |task_name|
      klass = klass.to_s.sub('Jets::Commands::','')
      namespace = klass =~ /^Main/ ? nil : klass.underscore.gsub('/',':')
      [namespace, task_name].compact.join(':')
    end
  end.flatten.sort
end

.perform(full_command, thor_args) ⇒ Object

thor_args is an array of commands. Examples:

["help"]
["dynamodb:migrate"]

Same signature as RakeCommand.perform. Not using full_command.



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# File 'lib/jets/commands/base.rb', line 23

def perform(full_command, thor_args)
  config = {} # doesnt seem like config is used
  dispatch(nil, thor_args, nil, config)
end

.subclasses ⇒ Object

Track all command subclasses.



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# File 'lib/jets/commands/base.rb', line 40

def subclasses
  @subclasses ||= []
end