public function ObfuscateEmail::process in Obfuscate Email 8

Performs the filter processing.

Parameters

string $text: The text string to be filtered.

string $langcode: The language code of the text to be filtered.

Return value

\Drupal\filter\FilterProcessResult The filtered text, wrapped in a FilterProcessResult object, and possibly with associated assets, cacheability metadata and placeholders.

Overrides FilterInterface::process

See also

\Drupal\filter\FilterProcessResult

File

src/Plugin/Filter/ObfuscateEmail.php, line 54

Class

ObfuscateEmail

Provide a filter to obfuscate mailto anchor tags and optionally replace inner text.

Namespace

Drupal\obfuscate_email\Plugin\Filter

Code

public function process($text, $langcode) {
  $result = new FilterProcessResult($text);
  if (stristr($text, 'mailto') === FALSE) {
    return $result;
  }
  $dom = Html::load($text);
  $xpath = new \DOMXPath($dom);

  /** @var \DOMElement $domElement */
  foreach ($xpath
    ->query('//a[starts-with(@href, "mailto:")]') as $domElement) {

    // Read the href attribute value and delete it.
    $href = str_replace('mailto:', '', $domElement
      ->getAttribute('href'));
    $domElement
      ->setAttribute('href', '#');

    // Convert to rot13
    $mail_string = str_rot13(str_replace([
      '.',
      '@',
    ], [
      '/dot/',
      '/at/',
    ], $href));
    $domElement
      ->setAttribute('data-mail-to', $mail_string);

    // Replace occurrence of the address in the anchor text.
    if (strpos($domElement->nodeValue, $href) !== FALSE) {
      $domElement->nodeValue = str_replace($href, '@email', $domElement->nodeValue);
      $domElement
        ->setAttribute('data-replace-inner', '@email');
      if ($this->settings['click']) {
        $domElement
          ->setAttribute('data-mail-click-link', true);
        $domElement->nodeValue = $this
          ->t($this->settings['click_label']);
        $domElement
          ->setAttribute('data-replace-inner', $domElement->nodeValue);
      }
    }
  }
  $result
    ->setProcessedText(Html::serialize($dom));
  return $result;
}