advagg_critical_css.module in Advanced CSS/JS Aggregation 7.2

Advanced aggregation critical css module.

File

advagg_critical_css/advagg_critical_css.module

<?php

/**
 * @file
 * Advanced aggregation critical css module.
 */

/**
 * @addtogroup hooks
 * @{
 */

/**
 * Implements hook_menu().
 */
function advagg_critical_css_menu() {
  $file_path = drupal_get_path('module', 'advagg_critical_css');
  $config_path = advagg_admin_config_root_path();
  $items[$config_path . '/advagg/critical-css'] = array(
    'title' => 'Critical CSS',
    'description' => 'Control critical css.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'advagg_critical_css_admin_settings_form',
    ),
    'type' => MENU_LOCAL_TASK,
    'access arguments' => array(
      'administer site configuration',
    ),
    'file path' => $file_path,
    'file' => 'advagg_critical_css.admin.inc',
    'weight' => 10,
  );
  return $items;
}

/**
 * Implements hook_module_implements_alter().
 */
function advagg_critical_css_module_implements_alter(&$implementations, $hook) {

  // Move critical_css_advagg_mod_critical_css_file_pre_alter to the bottom.
  if ($hook === 'critical_css_advagg_mod_critical_css_file_pre_alter' && array_key_exists('advagg_critical_css', $implementations)) {
    $item = $implementations['advagg_critical_css'];
    unset($implementations['advagg_critical_css']);
    $implementations['advagg_critical_css'] = $item;
  }
}

/**
 * @} End of "addtogroup hooks".
 */

/**
 * @addtogroup advagg_hooks
 * @{
 */

/**
 * Implements hook_advagg_mod_critical_css_file_pre_alter().
 */
function advagg_critical_css_advagg_mod_critical_css_file_pre_alter(&$filename, &$params, &$inline_strings) {
  list($dirs, $front_page, $object) = $params;

  // Build query parameters.
  $lookup = array(
    $dirs[6],
  );
  if ($front_page) {
    $lookup = array(
      '<front>',
    );
  }
  $lookup[] = $dirs[9];
  $lookup[] = $dirs[10];
  if (!empty($object->type)) {
    $lookup[] = $object->type;
  }
  $type = array(
    2,
    8,
  );
  $users = array(
    rtrim($dirs[2], '/\\'),
    rtrim($dirs[3], '/\\'),
  );

  // Get Results.
  $result = advagg_critical_css_table_get($GLOBALS['theme'], $type, $lookup, $users);

  // Put into the inline strings array.
  if (!empty($result)) {

    // Set string values.
    $inline_strings[0] = $result['css'];
    $inline_strings[1] = $result['dns'];
    $inline_strings[2] = $result['pre'];

    // Disable file lookup.
    $dirs[0] = '';
    $dirs[1] = '';
  }

  // Repack the $params array.
  $params = array(
    $dirs,
    $front_page,
    $object,
  );
}

/**
 * Implements hook_advagg_mod_critical_css_file_post_alter().
 */
function advagg_critical_css_advagg_mod_critical_css_file_post_alter(&$filename, &$params, &$inline_strings) {
  if (!empty($inline_strings[0])) {

    // Remove given css selectors.
    $selectors = variable_get('advagg_critical_css_selector_blacklist', '');
    $selectors_array = array_filter(array_map('trim', explode("\n", $selectors)));
    foreach ($selectors_array as $pattern) {
      $pattern = preg_quote($pattern, '/');
      $pattern = "/([^}]*{$pattern}[^{]*[^}]*\\})/s";
      $inline_strings[0] = preg_replace($pattern, '', $inline_strings[0]);
    }
  }
}

/**
 * @} End of "addtogroup advagg_hooks".
 */

/**
 * Get the db select return object.
 *
 * @param string $theme
 *   Name of the current theme.
 * @param array $type
 *   Array of int types to lookup.
 * @param array $lookup
 *   The lookup value.
 * @param array $user
 *   Array of user string values.
 *
 * @return SelectQuery
 *   Return the SelectQuery object after it has been executed.
 */
function advagg_critical_css_table_get($theme, array $type, array $lookup, array $user) {
  $output = array();
  try {
    $results = db_select('advagg_critical_css', 'acc')
      ->fields('acc')
      ->condition('theme', $theme)
      ->condition('type', $type, 'IN')
      ->condition('user', $user, 'IN')
      ->condition('lookup', $lookup, 'IN')
      ->orderBy('type', 'DESC')
      ->execute();

    // Get first result.
    $output = $results
      ->fetchAssoc();

    // Check for a better match in other results if they exist.
    foreach ($results as $values) {
      $values = (array) $values;
      if ($values['type'] < $output['type']) {
        $output = $values;
        break;
      }
      if ($values['type'] = $output['type']) {
        if (($values['user'] === 'anonymous' || $values['user'] === 'authenticated') && $output['user'] === 'all') {
          $output = $values;
          break;
        }
        if (is_int($values['user'])) {
          $output = $values;
          break;
        }
      }
    }
  } catch (PDOException $e) {

    // Log the error if in development mode.
    if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
      watchdog('advagg_critical_css', 'Development Mode - Caught PDO Exception: <code>@info</code>', array(
        '@info' => $e,
      ));
    }
  }
  return $output;
}

/**
 * Insert/Update data in the advagg_critical_css table.
 *
 * @param array $records
 *   List of rows needed that need to be changed in the db.
 *
 * @return array
 *   Return array of booleans if anything was written to the database.
 */
function advagg_critical_css_table_insert_update(array $records) {
  $return = array();
  foreach ($records as $values) {
    list($keys, $record) = $values;
    if (!isset($record['settings'])) {
      $record['settings'] = '';
    }
    try {
      $return[] = db_merge('advagg_critical_css')
        ->key(array(
        'theme' => $keys['theme'],
        'user' => $keys['user'],
        'type' => $keys['type'],
        'lookup' => $keys['lookup'],
      ))
        ->fields($record)
        ->execute();
    } catch (PDOException $e) {

      // Log the error if in development mode.
      if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
        watchdog('advagg_critical_css', 'Development Mode - Caught PDO Exception: <code>@info</code>', array(
          '@info' => $e,
        ));
      }
    }
  }
  return $return;
}

/**
 * Delete data in the advagg_critical_css table.
 *
 * @param array $records
 *   List of rows needed that need to be removed from the db.
 *
 * @return array
 *   Return array of booleans if anything was removed from the database.
 */
function advagg_critical_css_table_delete(array $records) {
  $return = array();
  foreach ($records as $record) {
    try {
      $return[] = db_delete('advagg_critical_css')
        ->condition('theme', $record['theme'])
        ->condition('user', $record['user'])
        ->condition('type', $record['type'])
        ->condition('lookup', $record['lookup'])
        ->execute();
    } catch (PDOException $e) {

      // Log the error if in development mode.
      if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
        watchdog('advagg_critical_css', 'Development Mode - Caught PDO Exception: <code>@info</code>', array(
          '@info' => $e,
        ));
      }
    }
  }
  return $return;
}

Functions

Name	Description
advagg_critical_css_advagg_mod_critical_css_file_post_alter	Implements hook_advagg_mod_critical_css_file_post_alter().
advagg_critical_css_advagg_mod_critical_css_file_pre_alter	Implements hook_advagg_mod_critical_css_file_pre_alter().
advagg_critical_css_menu	Implements hook_menu().
advagg_critical_css_module_implements_alter	Implements hook_module_implements_alter().
advagg_critical_css_table_delete	Delete data in the advagg_critical_css table.
advagg_critical_css_table_get	Get the db select return object.
advagg_critical_css_table_insert_update	Insert/Update data in the advagg_critical_css table.