function _xmlsitemap_check_cache_files in XML sitemap 6

Check the cache files.

Return value

TRUE if the cache files must be updated / created, FALSE otherwise.

1 call to _xmlsitemap_check_cache_files()

xmlsitemap_output in ./xmlsitemap.pages.inc

Menu callback; display the sitemap.

File

./xmlsitemap.pages.inc, line 116

XML sitemap page callbacks.

Code

function _xmlsitemap_check_cache_files() {
  $chunk_size = variable_get('xmlsitemap_chunk_size', 1000);
  $link_count = xmlsitemap_link_count();
  $id = xmlsitemap_language_id();
  $parent_directory = variable_get('xmlsitemap_cache_directory', file_directory_path() . '/xmlsitemap');

  // If the directory that should contains the cache files doesn't exist, then
  // the cache files must be created.
  if (!file_check_directory($parent_directory, FILE_CREATE_DIRECTORY)) {
    return TRUE;
  }
  $update_timestamp = variable_get('xmlsitemap_update_timestamp', REQUEST_TIME);

  // If the cache files creation has failed last time, the cache files must be
  // created.
  if (variable_get("xmlsitemap_create_cache_result_{$id}", -1) !== TRUE) {
    return TRUE;
  }

  // If the main cache file doesn't exist, then the cache files must be
  // created.
  if (!file_exists($parent_directory . "/xsm-{$id}.xml")) {
    return TRUE;
  }

  // If the main cache file has been created before the sitemap content has
  // been updated, then the cache files must be updated.
  if (filemtime($parent_directory . "/xsm-{$id}.xml") < $update_timestamp) {
    return TRUE;
  }

  // Check also the other cache files.
  if ($link_count > $chunk_size) {
    for ($chunk = 0; $chunk < $link_count / $chunk_size; ++$chunk) {
      if (!file_exists($parent_directory . "/xsm-{$id}-{$chunk}.xml")) {
        return TRUE;
      }
      if (filemtime($parent_directory . "/xsm-{$id}-{$chunk}.xml") < $update_timestamp) {
        return TRUE;
      }
    }
  }
  return FALSE;
}