t1gor/Robots.txt-Parser-Class

<?php declare(strict_types=1);

namespace t1gor\RobotsTxtParser\Stream\Filters;

use Psr\Log\LoggerInterface;
use t1gor\RobotsTxtParser\Stream\CustomFilterInterface;

class SkipEndOfCommentedLineFilter extends \php_user_filter implements CustomFilterInterface {

    public const NAME = 'RTP_skip_end_of_commented_line';

    public $filtername = self::NAME;

    public function filter($in, $out, &$consumed, $closing) {
        while ($bucket = stream_bucket_make_writeable($in)) {
            $replacedCount = 0;
            $bucket->data = preg_replace('/\s*#.*/mui', '', $bucket->data, -1, $replacedCount);
            $consumed += $bucket->datalen;
            stream_bucket_append($out, $bucket);

            if ($replacedCount > 0
                && isset($this->params['logger'])
                && $this->params['logger'] instanceof LoggerInterface
            ) {
                $this->params['logger']->debug($replacedCount . ' char(s) dropped as commented out');
            }
        }

        return PSFS_PASS_ON;
    }
}