Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of Psy Shell.
Chris@0:  *
Chris@0:  * (c) 2012-2017 Justin Hileman
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Psy\Command;
Chris@0: 
Chris@0: use Symfony\Component\Console\Helper\TableHelper;
Chris@0: use Symfony\Component\Console\Input\InputArgument;
Chris@0: use Symfony\Component\Console\Input\InputInterface;
Chris@0: use Symfony\Component\Console\Output\OutputInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Help command.
Chris@0:  *
Chris@0:  * Lists available commands, and gives command-specific help when asked nicely.
Chris@0:  */
Chris@0: class HelpCommand extends Command
Chris@0: {
Chris@0:     private $command;
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function configure()
Chris@0:     {
Chris@0:         $this
Chris@0:             ->setName('help')
Chris@0:             ->setAliases(array('?'))
Chris@0:             ->setDefinition(array(
Chris@0:                 new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', null),
Chris@0:             ))
Chris@0:             ->setDescription('Show a list of commands. Type `help [foo]` for information about [foo].')
Chris@0:             ->setHelp('My. How meta.');
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Helper for setting a subcommand to retrieve help for.
Chris@0:      *
Chris@0:      * @param Command $command
Chris@0:      */
Chris@0:     public function setCommand($command)
Chris@0:     {
Chris@0:         $this->command = $command;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function execute(InputInterface $input, OutputInterface $output)
Chris@0:     {
Chris@0:         if ($this->command !== null) {
Chris@0:             // help for an individual command
Chris@0:             $output->page($this->command->asText());
Chris@0:             $this->command = null;
Chris@0:         } elseif ($name = $input->getArgument('command_name')) {
Chris@0:             // help for an individual command
Chris@0:             $output->page($this->getApplication()->get($name)->asText());
Chris@0:         } else {
Chris@0:             // list available commands
Chris@0:             $commands = $this->getApplication()->all();
Chris@0: 
Chris@0:             $table = $this->getTable($output);
Chris@0: 
Chris@0:             foreach ($commands as $name => $command) {
Chris@0:                 if ($name !== $command->getName()) {
Chris@0:                     continue;
Chris@0:                 }
Chris@0: 
Chris@0:                 if ($command->getAliases()) {
Chris@0:                     $aliases = sprintf('<comment>Aliases:</comment> %s', implode(', ', $command->getAliases()));
Chris@0:                 } else {
Chris@0:                     $aliases = '';
Chris@0:                 }
Chris@0: 
Chris@0:                 $table->addRow(array(
Chris@0:                     sprintf('<info>%s</info>', $name),
Chris@0:                     $command->getDescription(),
Chris@0:                     $aliases,
Chris@0:                 ));
Chris@0:             }
Chris@0: 
Chris@0:             $output->startPaging();
Chris@0:             if ($table instanceof TableHelper) {
Chris@0:                 $table->render($output);
Chris@0:             } else {
Chris@0:                 $table->render();
Chris@0:             }
Chris@0:             $output->stopPaging();
Chris@0:         }
Chris@0:     }
Chris@0: }