function nodewords_preprocess_page in Nodewords: D6 Meta Tags 6.3

Same name and namespace in other branches

1. 6 nodewords.module \nodewords_preprocess_page()
2. 6.2 nodewords.module \nodewords_preprocess_page()

Implements hook_preprocess_page().

File

./nodewords.module, line 94

Implement an version that other modules can use to add meta tags.

Code

function nodewords_preprocess_page(&$variables) {
  $output_tags = array();
  $head_tags = variable_get('nodewords_head', array());
  $options = nodewords_detect_type_id();
  $bool = $options['type'] != NODEWORDS_TYPE_NONE && $options['type'] != NODEWORDS_TYPE_OFFLINE;
  if ($bool) {
    $options['output'] = 'head';
    if ($options['type'] == NODEWORDS_TYPE_PAGER) {
      nodewords_load_all_includes('nodewords.tags.inc');
      foreach (nodewords_get_possible_tags() as $name => $info) {
        if (empty($head_tags[$name])) {
          continue;
        }
        $bool = !empty($info['context']['allowed']) && in_array(NODEWORDS_TYPE_PAGER, $info['context']['allowed']) && function_exists($function = $info['callback'] . '_prepare');
        if ($bool) {
          $options['parameters'] = !empty($info['callback arguments']) ? $info['callback arguments'] : array();
          $function($output_tags, array(), $options);
        }
      }
    }
    elseif ($options['type'] == NODEWORDS_TYPE_NODE) {
      $node = node_load(array(
        'nid' => $options['id'],
        'vid' => $options['sid'],
      ));
      if ($node && node_access('view', $node)) {
        $tags = nodewords_load_tags($options + array(
          'language' => $node->language,
        ));
      }
      else {
        $tags = array();
      }
    }
    else {
      $tags = nodewords_load_tags($options);
      nodewords_load_all_includes('nodewords.tags.inc');

      // Prepare the tags.
      foreach (nodewords_get_possible_tags() as $name => $info) {
        if (empty($head_tags[$name])) {
          continue;
        }
        if (function_exists($function = $info['callback'] . '_prepare')) {
          $options['parameters'] = !empty($info['callback arguments']) ? $info['callback arguments'] : array();
          $function($output_tags, _nodewords_tag_value($name, isset($tags[$name]) ? $tags[$name] : array(), $options + array(
            'admin' => FALSE,
          )), $options);
        }
      }
    }
    nodewords_load_all_includes('nodewords.hooks.inc');
    drupal_alter('metatags', $output_tags, $options);
    $output = _nodewords_output_tags($output_tags);
    drupal_alter('metatags_output', $output, $options);
    $variables['head'] = $output . "\n" . $variables['head'];
  }
}