setAliases([]); $this->setDescription('Display help for a command'); $this->setHelp( <<<'EOF' The %command.name% command displays help for a given command: %command.full_name% list You can also output the help in other formats by using the --format option: %command.full_name% --format=xml list To display the list of available commands, please use the list command. EOF ); } /** * We must ge hold of the command instance here, as the property is private * in the parent class. * * @param Command $command The command to set */ public function setCommand(Command $command) { $this->command = $command; parent::setCommand($command); } /** * {@inheritdoc} * @throws \Symfony\Component\Console\Exception\InvalidArgumentException * @throws \Symfony\Component\Console\Exception\CommandNotFoundException */ protected function execute(InputInterface $input, OutputInterface $output) { if ($this->command === null) { $this->command = $this->getApplication()->find($input->getArgument('command_name')); } $helper = new DescriptorHelper(); // Add our own descriptor $helper->register('txt', new TextDescriptor()); $helper->describe($output, $this->command, [ 'format' => $input->getOption('format'), 'raw_text' => $input->getOption('raw'), 'screen_width' => (new Terminal())->getWidth() - 4, ]); $this->command = null; return 0; } }