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<?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) 2012-2023 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\Exception\RuntimeException;
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use Psy\Output\ShellOutput;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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/**
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* Interact with the current code buffer.
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*
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* Shows and clears the buffer for the current multi-line expression.
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*/
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class BufferCommand extends Command
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{
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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('buffer')
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->setAliases(['buf'])
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->setDefinition([
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new InputOption('clear', '', InputOption::VALUE_NONE, 'Clear the current buffer.'),
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])
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->setDescription('Show (or clear) the contents of the code input buffer.')
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->setHelp(
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<<<'HELP'
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Show the contents of the code buffer for the current multi-line expression.
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Optionally, clear the buffer by passing the <info>--clear</info> option.
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HELP
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);
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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 $output)
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{
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$app = $this->getApplication();
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if (!$app instanceof \Psy\Shell) {
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throw new RuntimeException('Buffer command requires a \Psy\Shell application');
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}
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$buf = $app->getCodeBuffer();
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if ($input->getOption('clear')) {
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$app->resetCodeBuffer();
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$output->writeln($this->formatLines($buf, 'urgent'), ShellOutput::NUMBER_LINES);
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} else {
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$output->writeln($this->formatLines($buf), ShellOutput::NUMBER_LINES);
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}
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return 0;
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}
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/**
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* A helper method for wrapping buffer lines in `<urgent>` and `<return>` formatter strings.
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*
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* @param array $lines
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* @param string $type (default: 'return')
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*
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* @return array Formatted strings
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*/
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protected function formatLines(array $lines, string $type = 'return'): array
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{
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$template = \sprintf('<%s>%%s</%s>', $type, $type);
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return \array_map(function ($line) use ($template) {
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return \sprintf($template, $line);
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}, $lines);
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}
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}
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