function advagg_get_preload_info_from_url in Advanced CSS/JS Aggregation 7.2

Given a link get the as, type, and crossorigin attributes.

Parameters

string $url: Link to the url that will be preloaded.

string $as: What type of content is this; font, image, video, etc.

string $type: The mime type of the file.

string $crossorigin: Preload cross-origin resources; fonts always need to be CORS.

Return value

array An array containing

2 calls to advagg_get_preload_info_from_url()

advagg_add_preload_header in ./advagg.module

Add in the preload header for CSS and JS external files.

advagg_add_preload_link in ./advagg.module

Add preload link to the top of the html head.

File

./advagg.module, line 6590

Advanced CSS/JS aggregation module.

Code

function advagg_get_preload_info_from_url($url, $as = '', $type = '', $crossorigin = NULL) {

  // Get extension.
  $parse = @parse_url($url);
  if (empty($parse['path'])) {
    return FALSE;
  }
  $file_ext = strtolower(pathinfo($parse['path'], PATHINFO_EXTENSION));
  if (empty($file_ext)) {
    $file_ext = basename($parse['path']);
  }

  // Detect missing parts.
  $list = advagg_preload_list();
  if (empty($as) && !empty($file_ext)) {
    foreach ($list as $as_key => $list_type) {
      $key = array_search($file_ext, $list_type);
      if ($key !== FALSE) {
        $as = $as_key;

        // Type of font, ext is svg but file doesn't contain string font.
        // This will be treated as an image.
        if ($as === 'font' && $file_ext === 'svg' && stripos($url, 'font') === FALSE) {
          $as = '';
        }
      }
      if (!empty($as)) {
        break;
      }
    }
  }
  if ($file_ext !== 'css' && empty($type) && !empty($as)) {
    $type = "{$as}/{$file_ext}";
    if ($file_ext === 'svg') {
      $type .= '+xml';
    }
    if ($file_ext === 'js') {
      $type = 'text/javascript';
    }
    if ($file_ext === 'css') {
      $type = 'text/css';
    }
  }
  if ($as === 'font' && is_null($crossorigin)) {
    $crossorigin = 'anonymous';
  }
  return array(
    $as,
    $type,
    $crossorigin,
    $parse,
  );
}