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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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/*
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 * This file is part of Psy Shell.
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 *
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 * (c) 2012-2022 Justin Hileman
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Psy\Command;
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use Psy\Output\ShellOutput;
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use Symfony\Component\Console\Helper\TableHelper;
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use Symfony\Component\Console\Input\InputArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Output\OutputInterface;
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/**
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 * Help command.
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 *
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 * Lists available commands, and gives command-specific help when asked nicely.
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 */
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class HelpCommand extends Command
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{
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    private $command;
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    /**
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     * {@inheritdoc}
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     */
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    protected function configure()
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    {
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        $this
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            ->setName('help')
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            ->setAliases(['?'])
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            ->setDefinition([
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                new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name.', null),
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            ])
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            ->setDescription('Show a list of commands. Type `help [foo]` for information about [foo].')
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            ->setHelp('My. How meta.');
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    }
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    /**
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     * Helper for setting a subcommand to retrieve help for.
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     *
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     * @param Command $command
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     */
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    public function setCommand(Command $command)
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    {
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        $this->command = $command;
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    }
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    /**
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     * {@inheritdoc}
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     *
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     * @return int 0 if everything went fine, or an exit code
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     */
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    protected function execute(InputInterface $input, OutputInterface $output)
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    {
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        if ($this->command !== null) {
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            // help for an individual command
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            $output->page($this->command->asText());
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            $this->command = null;
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        } elseif ($name = $input->getArgument('command_name')) {
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            // help for an individual command
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            $output->page($this->getApplication()->get($name)->asText());
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        } else {
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            // list available commands
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            $commands = $this->getApplication()->all();
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            $table = $this->getTable($output);
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            foreach ($commands as $name => $command) {
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                if ($name !== $command->getName()) {
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                    continue;
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                }
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                if ($command->getAliases()) {
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                    $aliases = \sprintf('<comment>Aliases:</comment> %s', \implode(', ', $command->getAliases()));
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                } else {
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                    $aliases = '';
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                }
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                $table->addRow([
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                    \sprintf('<info>%s</info>', $name),
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                    $command->getDescription(),
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                    $aliases,
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                ]);
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            }
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            if ($output instanceof ShellOutput) {
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                $output->startPaging();
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            }
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            if ($table instanceof TableHelper) {
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                $table->render($output);
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            } else {
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                $table->render();
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            }
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            if ($output instanceof ShellOutput) {
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                $output->stopPaging();
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            }
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        }
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        return 0;
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    }
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}