<?php

/**
 * @file
 * Add colorbox-load class to links with images.
 */

chdir(dirname ( __FILE__ ));
chdir('../');
define('DRUPAL_ROOT', getcwd());
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);

  $batch = colorbox_to_article_images_batch();
  batch_set($batch);
  batch_process('');

function colorbox_to_article_images_batch() {
   $operati

  $nids = db_select('node', 'n')
    ->fields('n', array('nid'))
    ->condition('n.type', 'article')
    ->execute()->fetchCol();

  $nids_chunks = array_chunk($nids, COLORBOX_ARTICLE_IMAGES_BATCH_SIZE);

  foreach ($nids_chunks as $nids_chunk) {
    $operations[] = array(
      'colorbox_to_article_images_process',
      array($nids_chunk),
    );
  }

  $batch = array(
    'operations' => $operations,
    'finished' => 'colorbox_to_article_images_batch_finished',

    // We can define custom messages instead of the default ones.
    'title' => t('Обработка статей'),
    'init_message' => t('Инициализация обработки статей.'),
    'progress_message' => t('Обработано @current из @total статей.'),
    'error_message' => t('Возникла ошибка.'),
  );

  return $batch;
}

function colorbox_to_article_images_process($nids, &$context) {
  $a = 'http://4tololo.loc/admin/config/development/colorbox-to-articles-images';
  // Use the $context['sandbox'] at your convenience to store the
  // information needed to track progression between successive calls.
  if (!isset($context['sandbox']['progress'])) {
     $c
    $context['sandbox']['progress'] = 0;
    $context['sandbox']['current_node'] = 0;
    $context['sandbox']['max'] = count($nids);
  }

  $updated = 0;

  foreach ($nids as $nid) {
    $node = node_load($nid);
    try {
      $node_wrapper = entity_metadata_wrapper('node', $node);
      $body = $node_wrapper->body->value();
      $html = new simple_html_dom();
      $html->load($body['value']);

      foreach ($html->find('a img') as $image_with_link ) {
        $link = $image_with_link->parent();
        $classes = $link->getAttribute('class');
        if (!preg_match('/(^| )colorbox-load($| )/', $classes)) {
          $updated++;
          $new_classes = $classes ? $classes . ' colorbox-load' : 'colorbox-load';
          $link->setAttribute('class', $new_classes);
        }
      }

      $body['value'] = $html->save();
      $node_wrapper->body->set($body);
      node_save($node);
    }
    catch(Exception $e) {
      // Do nothing.
    }
  }

  $updated = variable_get('colorbox_to_article_images_updated', 0) + $updated;
  $context['message'] = $updated . ' изображений исправленно.';
  $context['finished'] = 1;
}

function colorbox_to_article_images_batch_finished() {
  drupal_set_message(variable_get('colorbox_to_article_images_updated', 0) . ' изображений успешно исправленно.');
}