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   1  <?php declare(strict_types=1);
   2  
   3  /**
   4  * @package   s9e\TextFormatter
   5  * @copyright Copyright (c) 2010-2022 The s9e authors
   6  * @license   http://www.opensource.org/licenses/mit-license.php The MIT License
   7  */
   8  namespace s9e\TextFormatter\Plugins\Litedown\Parser;
   9  
  10  use s9e\TextFormatter\Parser\Tag;
  11  
  12  class Slugger
  13  {
  14  	public static function getJS(): string
  15      {
  16          return file_get_contents(__DIR__ . '/Slugger.js');
  17      }
  18  
  19  	public static function setTagSlug(Tag $tag, string $innerText): void
  20      {
  21          $slug = strtolower($innerText);
  22          $slug = preg_replace('/[^a-z0-9]+/', '-', $slug);
  23          $slug = trim($slug, '-');
  24          if ($slug !== '')
  25          {
  26              $tag->setAttribute('slug', $slug);
  27          }
  28      }
  29  }