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# frozen_string_literal: true
require "active_support"
require "active_support/core_ext/enumerable"
require "active_support/core_ext/object/blank"
require "thor"
module Rails
module Command
extend ActiveSupport::Autoload
autoload :Spellchecker
autoload :Behavior
autoload :Base
include Behavior
HELP_MAPPINGS = %w(-h -? --help)
class << self
def hidden_commands # :nodoc:
@hidden_commands ||= []
end
def environment # :nodoc:
ENV["RAILS_ENV"].presence || ENV["RACK_ENV"].presence || "development"
end
# Receives a namespace, arguments and the behavior to invoke the command.
def invoke(full_namespace, args = [], **config)
namespace = full_namespace = full_namespace.to_s
if char = namespace =~ /:(\w+)$/
command_name, namespace = $1, namespace.slice(0, char)
else
command_name = namespace
end
command_name, namespace = "help", "help" if command_name.blank? || HELP_MAPPINGS.include?(command_name)
command_name, namespace = "version", "version" if %w( -v --version ).include?(command_name)
command = find_by_namespace(namespace, command_name)
if command && command.all_commands[command_name]
command.perform(command_name, args, config)
else
find_by_namespace("rake").perform(full_namespace, args, config)
end
end
# Rails finds namespaces similar to Thor, it only adds one rule:
#
# Command names must end with "_command.rb". This is required because Rails
# looks in load paths and loads the command just before it's going to be used.
#
# find_by_namespace :webrat, :rails, :integration
#
# Will search for the following commands:
#
# "rails:webrat", "webrat:integration", "webrat"
#
# Notice that "rails:commands:webrat" could be loaded as well, what
# Rails looks for is the first and last parts of the namespace.
def find_by_namespace(namespace, command_name = nil) # :nodoc:
lookups = [ namespace ]
lookups << "#{namespace}:#{command_name}" if command_name
lookups.concat lookups.map { |lookup| "rails:#{lookup}" }
lookup(lookups)
namespaces = subclasses.index_by(&:namespace)
namespaces[(lookups & namespaces.keys).first]
end
# Returns the root of the Rails engine or app running the command.
def root
if defined?(ENGINE_ROOT)
Pathname.new(ENGINE_ROOT)
elsif defined?(APP_PATH)
Pathname.new(File.expand_path("../..", APP_PATH))
end
end
def print_commands # :nodoc:
commands.each { |command| puts(" #{command}") }
end
private
COMMANDS_IN_USAGE = %w(generate console server test test:system dbconsole new)
private_constant :COMMANDS_IN_USAGE
def commands
lookup!
visible_commands = (subclasses - hidden_commands).flat_map(&:printing_commands)
(visible_commands - COMMANDS_IN_USAGE).sort
end
def command_type # :doc:
@command_type ||= "command"
end
def lookup_paths # :doc:
@lookup_paths ||= %w( rails/commands commands )
end
def file_lookup_paths # :doc:
@file_lookup_paths ||= [ "{#{lookup_paths.join(',')}}", "**", "*_command.rb" ]
end
end
end
end
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