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