<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Normalizer;
/**
* Creates URL-friendly strings based on the given string input
*/
final class SlugNormalizer implements TextNormalizerInterface
{
/**
* {@inheritdoc}
*/
public function normalize(string $text, $context = null): string
{
// Trim whitespace
$slug = \trim($text);
// Convert to lowercase
$slug = \mb_strtolower($slug);
// Try replacing whitespace with a dash
$slug = \preg_replace('/\s+/u', '-', $slug) ?? $slug;
// Try removing characters other than letters, numbers, and marks.
$slug = \preg_replace('/[^\p{L}\p{Nd}\p{Nl}\p{M}-]+/u', '', $slug) ?? $slug;
return $slug;
}
}