phpDocumentor\Reflection\Utils

Complexity

Total Complexity

2

Size/Duplication

Total Lines	35
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	pregSplit()	0	9	2

<?php

declare(strict_types=1);

/**
 * This file is part of phpDocumentor.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @link      http://phpdoc.org
 */

namespace phpDocumentor\Reflection;

use phpDocumentor\Reflection\Exception\PcreException;
use function preg_split as php_preg_split;
use function preg_last_error;

abstract class Utils
{

    /**
     * Wrapper function for phps preg_split
     *
     * This function is inspired by {@link https://github.com/thecodingmachine/safe/blob/master/generated/pcre.php}. But
     * since this library is all about performance we decided to strip everything we don't need. Reducing the amount
     * of files that have to be loaded, ect.
     *
     * @param string $pattern The pattern to search for, as a string.
     * @param string $subject The input string.
     * @param int|null $limit If specified, then only substrings up to limit are returned with the rest of the string being placed in the last substring. A limit of -1 or 0 means "no limit".
     * @param int $flags flags can be any combination of the following flags (combined with the | bitwise operator):
     * *PREG_SPLIT_NO_EMPTY*
     *      If this flag is set, only non-empty pieces will be returned by preg_split().
     * *PREG_SPLIT_DELIM_CAPTURE*
     *      If this flag is set, parenthesized expression in the delimiter pattern will be captured and returned as well.
     * *PREG_SPLIT_OFFSET_CAPTURE*
     *      If this flag is set, for every occurring match the appendant string offset will also be returned. Note that this changes the return value in an array where every element is an array consisting of the matched string at offset 0 and its string offset into subject at offset 1.
     *
     * @return string[] Returns an array containing substrings of subject split along boundaries matched by pattern
     *
     * @throws PcreException
     */
    public static function pregSplit(string $pattern, string $subject, ?int $limit = -1, int $flags = 0) : array
    {
        $parts = php_preg_split($pattern, $subject, $limit, $flags);
        if ($parts === false) {
            throw PcreException::createFromPhpError(preg_last_error());
        }

        return $parts;
    }
}