function block_module($op, $module) {
  if ($op == 'uninstall' && module_hook($module, 'block') {
    db_delete('blocks')->condition('module', $module)->execute();
    db_delete('blocks_roles')->condition('module', $module)->execute();
  }
}

function actions_module($op, $module) {
  if ($op == 'uninstall') {
    $module_actions = module_invoke($module, 'action_info');
    foreach(array_keys($module_actions) as $aid) {
      actions_delete($aid);
    }
  }
}

function filter_module($op, $module) {
  if ($op == 'uninstall' && module_hook($module, 'filter')) {
    db_delete('filters')->condition('module', $module)->execute();
  }
}

function node_module($op, $module) {
  // TODO Suppress messages and watchdog?
  if ($op == 'uninstall') {
    $node_types = module_invoke($module, 'node_info');
    foreach(array_keys($node_types) as $type) {
      $nodes = db_query("SELECT nid FROM {node} WHERE type = :type", $type);
      foreach(db_result($nodes) as $nid) {
        node_delete($nid);
      }
      node_delete_type($type);
    }
  }
}

function user_module($op, $module) {
  if ($op == 'uninstall') {
    $perms = module_invoke($module, 'perm');
    if (!empty($perms)) {
      db_delete('role_permission')->condition('permission', array_keys($perms), 'IN')->execute();
    }
  }
}

function menu_module($op, $module) {
  if ($op == 'uninstall') {
    $module_paths = module_invoke($module, 'menu');

    // Now remove the menu links for all paths declared by this module.
    if (!empty($module_paths)) {
      $module_paths = array_keys($module_paths);
      // Clean out the names of load functions.
      foreach ($module_paths as $index => $path) {
        $parts = explode('/', $path, MENU_MAX_PARTS);
        foreach ($parts as $k => $part) {
          if (preg_match('/^%[a-z_]*$/', $part)) {
            $parts[$k] = '%';
          }
        }
        $module_paths[$index] = implode('/', $parts);
      }
      $placeholders = implode(', ', array_fill(0, count($module_paths), "'%s'"));

      $result = db_query('SELECT * FROM {menu_links} WHERE router_path IN (' . $placeholders . ') AND external = 0 ORDER BY depth DESC', $module_paths);
      // Remove all such items. Starting from those with the greatest depth will
      // minimize the amount of re-parenting done by menu_link_delete().
      while ($item = db_fetch_array($result)) {
        _menu_delete_item($item, TRUE);
      }
    }
  }
}

function drupal_uninstall_module($module) {
  // Allow other modules to act on uninstalling the module(s)
  drupal_load('module', $module);
  module_invoke_all('module', 'uninstall', $module);

  // Uninstall the module(s).
  module_load_install($module);
  module_invoke($module, 'uninstall');

  cache_clear_all();
  drupal_set_installed_schema_version($module, SCHEMA_UNINSTALLED);
}