Developer
<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2023 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\Exception\RuntimeException;
use Psy\Output\ShellOutput;
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
{
/**
* {@inheritdoc}
*/
protected function configure()
{
$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
{
$app = $this->getApplication();
if (!$app instanceof \Psy\Shell) {
throw new RuntimeException('Buffer command requires a \Psy\Shell application');
}
$buf = $app->getCodeBuffer();
if ($input->getOption('clear')) {
$app->resetCodeBuffer();
$output->writeln($this->formatLines($buf, 'urgent'), ShellOutput::NUMBER_LINES);
} else {
$output->writeln($this->formatLines($buf), ShellOutput::NUMBER_LINES);
}
return 0;
}
/**
* 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, $type);
return \array_map(function ($line) use ($template) {
return \sprintf($template, $line);
}, $lines);
}
}
Developer
To ensure a smooth integration process and optimal performance, follow these best practices: