Club Drupal

<?php

/**

 * @file

 * File hooks implemented by the Media: YouTube module.

 */

/**

 * Implements hook_file_operations().

 */

function media_youtube_file_operations() {

  $operations = array(

    'media_youtube_refresh' => array(

      'label' => t('Refresh YouTube information from source'),

      'callback' => 'media_youtube_cache_clear',

    ),

  );

  return $operations;

}

/**

 * Clear the cached YouTube content for the selected files.

 */

function media_youtube_cache_clear($fids) {

  $fids = array_keys($fids);

  $folder = variable_get('youtube_thumb_dir');

  $query = new EntityFieldQuery();

  $results = $query

  ->entityCondition('entity_type', 'file')

  ->propertyCondition('uri', '%' . $folder . '%', 'LIKE')

  ->propertyCondition('fid', $fids)

  ->execute();

  if (!empty($results)) {

    $files = file_load_multiple(array_keys($results['file']));

    foreach ($files as $file) {

      foreach (image_styles() as $isid => $style) {

        $path = image_style_url($isid, $file->uri);

        if ($path) {

          image_path_flush($path);

        }

      }

      drupal_set_message(t('Refreshed thumbnail and derivatives for %filename', array('%filename' => $file->filename)));

    }

  }

}