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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Site
   5   * @subpackage  mod_syndicate
   6   *
   7   * @copyright   (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  namespace Joomla\Module\Syndicate\Site\Helper;
  12  
  13  use Joomla\CMS\Document\HtmlDocument;
  14  use Joomla\Registry\Registry;
  15  use Joomla\Utilities\ArrayHelper;
  16  
  17  // phpcs:disable PSR1.Files.SideEffects
  18  \defined('_JEXEC') or die;
  19  // phpcs:enable PSR1.Files.SideEffects
  20  
  21  /**
  22   * Helper for mod_syndicate
  23   *
  24   * @since  1.5
  25   */
  26  class SyndicateHelper
  27  {
  28      /**
  29       * Gets the link
  30       *
  31       * @param   Registry      $params    The module parameters
  32       * @param   HtmlDocument  $document  The document
  33       *
  34       * @return  string|null  The link as a string, if found
  35       *
  36       * @since   1.5
  37       */
  38      public static function getLink(Registry $params, HtmlDocument $document)
  39      {
  40          foreach ($document->_links as $link => $value) {
  41              $value = ArrayHelper::toString($value);
  42  
  43              if (strpos($value, 'application/' . $params->get('format') . '+xml')) {
  44                  return $link;
  45              }
  46          }
  47  
  48          return null;
  49      }
  50  }