function _autoload_registry_update in Autoload 6.2

Does the work for autoload_registry_update().

Related topics

1 call to _autoload_registry_update()

autoload_registry_update in ./autoload.module

Update the registry based on the latest files listed in the database.

File

./autoload.registry.inc, line 22

This file contains the code registry parser engine. This file is backported from Drupal 7 core's registry.inc file.

Code

function _autoload_registry_update() {

  // Get current list of modules and their files.
  $modules = array();
  $query = db_query("SELECT * FROM {system} WHERE type = 'module'");

  // Get the list of files we are going to parse.
  $files = array();
  while ($module = db_fetch_object($query)) {
    $module->info = unserialize($module->info);
    $dir = dirname($module->filename);

    // Store the module directory for use in hook_registry_files_alter().
    $module->dir = $dir;
    if ($module->status && !empty($module->info['files'])) {

      // Add files for enabled modules to the registry.
      foreach ($module->info['files'] as $file) {
        $files["{$dir}/{$file}"] = array(
          'module' => $module->name,
          'weight' => $module->weight,
        );
      }
    }
    $modules[$module->name] = $module;
  }
  foreach (file_scan_directory('includes', '/\\.inc$/') as $filename => $file) {
    $files["{$filename}"] = array(
      'module' => '',
      'weight' => 0,
    );
  }

  // Add support for the old-style hook_autoload_info() data.
  $classes = array();
  foreach (module_implements('autoload_info') as $module) {
    $module_classes = module_invoke($module, 'autoload_info');
    if (isset($module_classes) && is_array($module_classes)) {
      foreach (array_keys($module_classes) as $item) {
        $module_classes[$item] += array(
          'module' => $module,
          'file path' => drupal_get_path('module', $module),
          'weight' => isset($modules[$module]) ? $modules[$module]->weight : 0,
        );
      }
      $classes = array_merge($classes, $module_classes);
    }
  }

  // Alter the lookup table as defined by modules. The keys are class and interface names.
  drupal_alter('autoload_info', $classes);
  foreach ($classes as $item) {
    $filename = $item['file path'] . '/' . $item['file'];
    if (!isset($files[$filename])) {
      $files["{$filename}"] = array(
        'module' => $item['module'],
        'weight' => $item['weight'],
      );
    }
  }
  try {

    // Allow modules to manually modify the list of files before the registry
    // parses them. The $modules array provides the .info file information, which
    // includes the list of files registered to each module. Any files in the
    // list can then be added to the list of files that the registry will parse,
    // or modify attributes of a file.
    drupal_alter('autoload_registry_files', $files, $modules);
    foreach (autoload_registry_get_parsed_files() as $filename => $file) {

      // Add the hash for those files we have already parsed.
      if (isset($files[$filename])) {
        $files[$filename]['hash'] = $file['hash'];
      }
      else {

        // Flush the registry of resources in files that are no longer on disc
        // or are in files that no installed modules require to be parsed.
        db_query("DELETE FROM {autoload_registry} WHERE filename = '%s'", $filename);
        db_query("DELETE FROM {autoload_registry_file} WHERE filename = '%s'", $filename);
      }
    }
    $parsed_files = _autoload_registry_parse_files($files);
    $unchanged_resources = array();
    $lookup_cache = array();
    if ($cache = cache_get('autoload')) {
      $lookup_cache = $cache->data;
    }
    foreach ($lookup_cache as $key => $file) {

      // If the file for this cached resource is carried over unchanged from
      // the last registry build, then we can safely re-cache it.
      if ($file && in_array($file, array_keys($files)) && !in_array($file, $parsed_files)) {
        $unchanged_resources[$key] = $file;
      }
    }
    module_implements('', '', TRUE);
    _autoload_registry_check_code(AUTOLOAD_REGISTRY_RESET_LOOKUP_CACHE);
  } catch (Exception $e) {
    throw $e;
  }

  // We have some unchanged resources, warm up the cache - no need to pay
  // for looking them up again.
  if (count($unchanged_resources) > 0) {
    cache_set('autoload', $unchanged_resources);
  }
}