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<?php /* * This file is part of Psy Shell. * * (c) 2012-2026 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 Psy\Output\ShellOutputAdapter; use Psy\Readline\LegacyReadline; use Psy\Readline\Readline; use Psy\Readline\ReadlineAware; use Symfony\Component\Console\Input\InputInterface; use Symfony\Component\Console\Input\InputOption; use Symfony\Component\Console\Output\OutputInterface; /** * Interact with the current code buffer. * * Shows and clears the buffer for the current multi-line expression. */ class BufferCommand extends Command implements ReadlineAware { private ?Readline $readline = null; /** * {@inheritdoc} */ protected function configure(): void { $this ->setName('buffer') ->setAliases(['buf']) ->setDefinition([ new InputOption('clear', '', InputOption::VALUE_NONE, 'Clear the current buffer.'), ]) ->setDescription('Show (or clear) the contents of the code input buffer.') ->setHelp( <<<'HELP' Show the contents of the code buffer for the current multi-line expression. Optionally, clear the buffer by passing the <info>--clear</info> option. HELP ); } /** * {@inheritdoc} * * @return int 0 if everything went fine, or an exit code */ protected function execute(InputInterface $input, OutputInterface $output): int { $shell = $this->getShell(); $shellOutput = $this->shellOutput($output); $readline = $this->getLegacyReadline(); $legacyBuffer = $readline->getBuffer(); $shellBuffer = $shell->getPendingCodeBuffer(); $buf = $legacyBuffer !== [] ? $legacyBuffer : $shellBuffer; if ($input->getOption('clear')) { $readline->clearBuffer(); if ($shellBuffer !== []) { $shell->clearPendingCodeBuffer(); } $shellOutput->writeln($this->formatLines($buf, 'urgent'), ShellOutputAdapter::NUMBER_LINES); } else { $shellOutput->writeln($this->formatLines($buf), ShellOutputAdapter::NUMBER_LINES); } return 0; } /** * Set the shell's readline implementation. */ public function setReadline(Readline $readline) { $this->readline = $readline; } /** * A helper method for wrapping buffer lines in `<urgent>` and `<return>` formatter strings. * * @param array $lines * @param string $type (default: 'return') * * @return array Formatted strings */ protected function formatLines(array $lines, string $type = 'return'): array { $template = \sprintf('<%s>%%s</%s>', $type, $type); return \array_map(fn ($line) => \sprintf($template, $line), $lines); } /** * Get the active multiline buffer from the legacy shim. */ private function getLegacyReadline(): LegacyReadline { if ($this->readline instanceof LegacyReadline) { return $this->readline; } throw new \LogicException('BufferCommand requires LegacyReadline.'); } }
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