function word_link_convert_text_recursively in Word Link 7.2

Helper function for converting text.

Parameters

string $text: Input text.

string $pattern: Regular expression pattern.

array $words: Array of all words.

string $disallowed: Disallowed tags.

array $settings: Array of filter settings.

string $tag: Tag that will be used to replace word.

1 call to word_link_convert_text_recursively()

word_link_convert_text in ./word_link.module

Find and convert defined word to link.

File

./word_link.module, line 387

Code

function word_link_convert_text_recursively(&$text, $pattern, $words, $disallowed, $settings, $tag) {

  // Create DOM object.
  $dom = filter_dom_load($text);
  $xpath = new DOMXPath($dom);
  $text_nodes = $xpath
    ->query('//text()[not(ancestor::a) ' . $disallowed . ']');
  foreach ($text_nodes as $original_node) {
    $text = $original_node->nodeValue;
    $match_count = preg_match_all($pattern, $text, $matches, PREG_OFFSET_CAPTURE);
    if ($match_count > 0) {
      $offset = 0;
      $parent = $original_node->parentNode;
      $next = $original_node->nextSibling;
      $parent
        ->removeChild($original_node);
      foreach ($matches[0] as $delta => $match) {
        $match_text = $match[0];
        $match_pos = $match[1];
        $text_lower = drupal_strtolower($match_text);
        $word = $words[$text_lower];
        $word_cache_id = $word->id . '_' . md5($match_text);
        if ($word->case_sensitive && $word->text == $match_text || !$word->case_sensitive) {
          $prefix = substr($text, $offset, $match_pos - $offset);
          $parent
            ->insertBefore($dom
            ->createTextNode($prefix), $next);
          $link = $dom
            ->createDocumentFragment();
          $word_link_rendered =& drupal_static('word_link_rendered');
          if (!isset($word_link_rendered[$word_cache_id])) {
            if ($cache = cache_get('word_link_rendered_' . $word_cache_id)) {
              $word_link_rendered[$word_cache_id] = $cache->data;
            }
            else {
              $target = url_is_external($word->url) ? '_blank' : '';
              $url_external = url_is_external($word->url);
              $url_options = array();
              $url_path = NULL;
              if ($url_external) {
                $url_path = $word->url;
              }
              else {
                $url_parts = parse_url($word->url);
                $url_query = array();
                if (isset($url_parts['query'])) {
                  parse_str($url_parts['query'], $url_query);
                }
                $url_options = array(
                  'query' => $url_query,
                  'fragment' => isset($url_parts['fragment']) ? $url_parts['fragment'] : '',
                );
                if (empty($url_parts['path'])) {

                  // Assuming that URL starts with #.
                  $url_options['external'] = TRUE;
                  $url_path = NULL;
                }
                else {
                  $url_path = $url_parts['path'];
                }
              }
              $attributes = array(
                'href' => url($url_path, $url_options),
                'title' => $word->url_title,
                'class' => $word->class,
                'target' => $target,
                'rel' => $word->rel,
              );
              if ($settings['word_link_highlight']) {
                $tag = 'span';
                unset($attributes['href'], $attributes['target'], $attributes['rel']);
              }
              $word_link_rendered[$word_cache_id] = theme('word_link', array(
                'text' => $match_text,
                'tag' => $tag,
                'attributes' => array_filter($attributes),
              ));
              if (!empty($settings['word_link_wrap_tag'])) {
                $word_link_rendered[$word_cache_id] = theme('html_tag', array(
                  'element' => array(
                    '#tag' => $settings['word_link_wrap_tag'],
                    '#value' => $word_link_rendered[$word_cache_id],
                  ),
                ));
              }
              cache_set('word_link_rendered_' . $word_cache_id, $word_link_rendered[$word_cache_id], 'cache');
            }
          }
          $link
            ->appendXML($word_link_rendered[$word_cache_id]);
          $parent
            ->insertBefore($link, $next);
          $offset = $match_pos + strlen($match_text);
        }
        else {
          $prefix = substr($text, $offset, $match_pos - $offset);
          $parent
            ->insertBefore($dom
            ->createTextNode($prefix), $next);
          $parent
            ->insertBefore($dom
            ->createTextNode($match_text), $next);
          $offset = $match_pos + strlen($match_text);
        }
        if ($delta == $match_count - 1) {
          $suffix = substr($text, $offset);
          $parent
            ->insertBefore($dom
            ->createTextNode($suffix), $next);
        }
      }
    }
  }
  $text = filter_dom_serialize($dom);
}