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   1  <?php
   2  
   3  /**
   4   * Implementation of hook_install().
   5   */
   6  function update_install() {
   7    // Create cache table.
   8    drupal_install_schema('update');
   9    // Remove stale variables from update_status 5.x contrib, if any.
  10    _update_remove_update_status_variables();
  11  }
  12  
  13  /**
  14   * Implementation of hook_uninstall().
  15   */
  16  function update_uninstall() {
  17    // Remove cache table.
  18    drupal_uninstall_schema('update');
  19    // Clear any variables that might be in use
  20    $variables = array(
  21      'update_check_frequency',
  22      'update_fetch_url',
  23      'update_last_check',
  24      'update_notification_threshold',
  25      'update_notify_emails',
  26    );
  27    foreach ($variables as $variable) {
  28      variable_del($variable);
  29    }
  30  }
  31  
  32  /**
  33   * Implementation of hook_schema().
  34   */
  35  function update_schema() {
  36    $schema['cache_update'] = drupal_get_schema_unprocessed('system', 'cache');
  37    $schema['cache_update']['description'] = 'Cache table for the Update module to store information about available releases, fetched from central server.';
  38    return $schema;
  39  }
  40  
  41  /**
  42   * Private helper to clear out stale variables from update_status 5.x contrib.
  43   *
  44   * @see update_install()
  45   * @see update_update_6000()
  46   */
  47  function _update_remove_update_status_variables() {
  48    variable_del('update_status_settings');
  49    variable_del('update_status_notify_emails');
  50    variable_del('update_status_check_frequency');
  51    variable_del('update_status_notification_threshold');
  52    variable_del('update_status_last');
  53    variable_del('update_status_fetch_url');
  54  }
  55  
  56  /**
  57   * Clear out stale variables from update_status.
  58   */
  59  function update_update_6000() {
  60    _update_remove_update_status_variables();
  61    return array();
  62  }