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<?php /* * This file is part of Psy Shell. * * (c) 2012-2015 Justin Hileman * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Psy\Command; use Symfony\Component\Console\Helper\TableHelper; use Symfony\Component\Console\Input\InputArgument; use Symfony\Component\Console\Input\InputInterface; use Symfony\Component\Console\Output\OutputInterface; /** * Help command. * * Lists available commands, and gives command-specific help when asked nicely. */ class HelpCommand extends Command { private $command; /** * {@inheritdoc} */ protected function configure() { $this ->setName('help') ->setAliases(array('?')) ->setDefinition(array( new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', null), )) ->setDescription('Show a list of commands. Type `help [foo]` for information about [foo].') ->setHelp('My. How meta.'); } /** * Helper for setting a subcommand to retrieve help for. * * @param Command $command */ public function setCommand($command) { $this->command = $command; } /** * {@inheritdoc} */ protected function execute(InputInterface $input, OutputInterface $output) { if ($this->command !== null) { // help for an individual command $output->page($this->command->asText()); $this->command = null; } elseif ($name = $input->getArgument('command_name')) { // help for an individual command $output->page($this->getApplication()->get($name)->asText()); } else { // list available commands $commands = $this->getApplication()->all(); $table = $this->getTable($output); foreach ($commands as $name => $command) { if ($name !== $command->getName()) { continue; } if ($command->getAliases()) { $aliases = sprintf('<comment>Aliases:</comment> %s', implode(', ', $command->getAliases())); } else { $aliases = ''; } $table->addRow(array( sprintf('<info>%s</info>', $name), $command->getDescription(), $aliases, )); } $output->startPaging(); if ($table instanceof TableHelper) { $table->render($output); } else { $table->render(); } $output->stopPaging(); } } }