MultiplePcreFilterIterator.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

use Symfony\Component\Finder\Expression\Expression;

abstract class MultiplePcreFilterIterator extends FilterIterator
{
    protected $matchRegexps = array();
    protected $noMatchRegexps = array();

    public function __construct(\Iterator $iterator, array $matchPatterns, array $noMatchPatterns)
    {
        foreach ($matchPatterns as $pattern) {
            $this->matchRegexps[] = $this->toRegex($pattern);
        }

        foreach ($noMatchPatterns as $pattern) {
            $this->noMatchRegexps[] = $this->toRegex($pattern);
        }

        parent::__construct($iterator);
    }

    protected function isRegex($str)
    {
        return Expression::create($str)->isRegex();
    }

    abstract protected function toRegex($str);
}