function advagg_mod_remove_js_if_not_used in Advanced CSS/JS Aggregation 7.2

Remove JS if not in use on current page.

Parameters

array $js: JS array.

1 call to advagg_mod_remove_js_if_not_used()

advagg_mod_js_post_alter in advagg_mod/advagg_mod.module

Alter the js array.

File

advagg_mod/advagg_mod.module, line 3570

Advanced aggregation modifier module.

Code

function advagg_mod_remove_js_if_not_used(array &$js) {
  $files_skiplist = array(
    'drupal.js',
    'jquery.js',
    'jquery.min.js',
    'jquery.once.js',
  );
  $inline_skiplist = array();
  if (module_exists('jquery_update')) {
    $inline_skiplist[] = 'document.write("<script src=\'' . $GLOBALS['base_path'] . drupal_get_path('module', 'jquery_update') . '/replace/jquery/' . variable_get('jquery_update_jquery_version', '1.10') . '/jquery' . (variable_get('jquery_update_compression_type', 'min') === 'none' ? '' : '.min') . ".js'>";
  }
  if (module_exists('labjs')) {
    $inline_skiplist[] = 'var $L = $LAB.setGlobalDefaults';
  }
  $include_jquery = FALSE;
  $include_drupal = FALSE;
  module_load_include('inc', 'advagg', 'advagg');

  // Look at each JavaScript entry and get the info on it.
  $files_info_filenames = array();
  foreach ($js as &$values) {
    if ($values['type'] !== 'file' || !is_string($values['data'])) {
      continue;
    }
    foreach ($files_skiplist as $skip_name) {
      if (strlen($skip_name) < strlen($values['data']) && substr_compare($values['data'], $skip_name, -strlen($skip_name), strlen($skip_name)) === 0) {
        continue 2;
      }
    }
    $files_info_filenames[] = $values['data'];
  }
  unset($values);
  $files_info = advagg_get_info_on_files($files_info_filenames);

  // Look at each JavaScript entry and see if it uses jquery or drupal.
  foreach ($js as $name => &$values) {
    if ($values['type'] === 'file' || $values['type'] === 'external') {
      foreach ($files_skiplist as $skip_name) {
        if (substr_compare($values['data'], $skip_name, -strlen($skip_name), strlen($skip_name)) === 0) {
          continue 2;
        }
      }
    }
    if ($values['type'] === 'inline' && !empty($inline_skiplist)) {
      foreach ($inline_skiplist as $skip_string) {
        if (stripos($values['data'], $skip_string) !== FALSE) {
          continue 2;
        }
      }
    }

    // Get advagg_mod info if not set; skip external files.
    if (!isset($files_info[$name]['advagg_mod']) && $values['type'] !== 'external') {
      $files_info[$name]['advagg_mod'] = advagg_mod_js_contains_jquery_drupal($values['data'], $values['type']);
    }

    // See what needs to be included.
    if (!empty($files_info[$name]['advagg_mod']['contents']['drupal'])) {
      $include_jquery = TRUE;
      $include_drupal = TRUE;
      break;
    }
    elseif (!empty($files_info[$name]['advagg_mod']['contents']['jquery'])) {
      $include_jquery = TRUE;
    }
    elseif (isset($values['requires_jquery']) && !empty($values['requires_jquery'])) {
      $include_jquery = TRUE;
    }
  }
  unset($values);

  // Kill only drupal JavaScript.
  if (!$include_drupal) {
    unset($js['settings']);
    foreach ($js as $name => &$values) {
      $drupal = 'drupal.js';
      if (substr_compare($name, $drupal, -strlen($drupal), strlen($drupal)) === 0) {
        unset($js[$name]);
      }
    }
    unset($values);

    // Kill all default JavaScript.
    if (!$include_jquery) {
      foreach ($js as $name => &$values) {
        if ($values['type'] === 'file' || $values['type'] === 'external') {
          foreach ($files_skiplist as $skip_name) {
            if (substr_compare($name, $skip_name, -strlen($skip_name), strlen($skip_name)) === 0) {
              unset($js[$name]);
            }
          }
        }
        elseif ($values['type'] === 'inline') {
          foreach ($inline_skiplist as $skip_string) {
            if (stripos($values['data'], $skip_string) !== FALSE) {
              unset($js[$name]);
            }
          }
        }
      }
      unset($values);
    }
  }
}