function node_diff in Diff 7.2

Same name and namespace in other branches

1. 5.2 node.inc \node_diff()
2. 5 node.inc \node_diff()
3. 6.2 includes/node.inc \node_diff()
4. 6 node.inc \node_diff()

Implements hook_diff() for node.module (body and title).

File

includes/node.inc, line 12

Implements hook_diff() for node.module (body and title).

Code

function node_diff($old_node, $new_node, $remove_markup) {
  $result = array();
  $type = node_type_get_type($new_node);
  $result['title'] = array(
    '#name' => $type->title_label,
    '#old' => array(
      $old_node->title,
    ),
    '#new' => array(
      $new_node->title,
    ),
    '#weight' => -5,
    '#format' => array(
      'show_header' => FALSE,
    ),
  );

  // @TODO: abstract this to work with all field types and/or split this
  // integration out to be more generic.
  $instances = field_info_instances('node', field_extract_bundle('node', $type));
  foreach ($instances as $instance) {
    $field_name = $instance['field_name'];
    $langcode = field_language('node', $new_node, $field_name);
    if (isset($new_node->{$field_name}[$langcode]) && !empty($new_node->{$field_name}[$langcode])) {
      foreach (array_keys($new_node->{$field_name}[$langcode]) as $delta) {
        if (isset($new_node->{$field_name}[$langcode][$delta]['value']) && isset($old_node->{$field_name}[$langcode][$delta]['value'])) {
          $view_old = $old_node->{$field_name}[$langcode][$delta]['value'];
          $view_new = $new_node->{$field_name}[$langcode][$delta]['value'];
          $result["{$field_name}_{$delta}"] = array(
            '#name' => $instance['label'],
            '#old' => explode("\n", $remove_markup ? drupal_html_to_text($view_old) : $view_old),
            '#new' => explode("\n", $remove_markup ? drupal_html_to_text($view_new) : $view_new),
          );
        }
        elseif (isset($new_node->{$field_name}[$langcode][$delta]['value'])) {

          // We have a newly input value where there was none in the previous
          // version of the node.
          $view_new = $new_node->{$field_name}[$langcode][$delta]['value'];
          $result["{$field_name}_{$delta}"] = array(
            '#name' => $instance['label'],
            '#old' => '',
            '#new' => explode("\n", $remove_markup ? drupal_html_to_text($view_new) : $view_new),
          );
        }
        elseif (isset($old_node->{$field_name}[$langcode][$delta]['value']) && !empty($old_node->{$field_name}[$langcode][$delta]['value'])) {

          // We have a value that has been removed from the field.
          $view_old = $old_node->{$field_name}[$langcode][$delta]['value'];
          $result["{$field_name}_{$delta}"] = array(
            '#name' => $instance['label'],
            '#old' => explode("\n", $remove_markup ? drupal_html_to_text($view_old) : $view_old),
            '#new' => '',
          );
        }
      }
    }
    elseif (isset($old_node->{$field_name}[$langcode])) {

      // We have a value that has been removed from the field.
      foreach (array_keys($old_node->{$field_name}[$langcode]) as $delta) {
        if (isset($old_node->{$field_name}[$langcode][$delta]['value'])) {
          $view_old = $old_node->{$field_name}[$langcode][$delta]['value'];
          $result["{$field_name}_{$delta}"] = array(
            '#name' => $instance['label'],
            '#old' => explode("\n", $remove_markup ? drupal_html_to_text($view_old) : $view_old),
            '#new' => '',
          );
        }
      }
    }
  }
  return $result;
}