protected function FileUrlGenerator::getCdnDomain in CDN 8.3

Gets the CDN domain to use for the given file URI.

Parameters

string $uri: The URI to a file for which we need a CDN URL, or the path to a shipped file.

Return value

bool|string Returns FALSE if the URI has an extension is not configured to be served from a CDN. Otherwise, returns a CDN domain.

1 call to FileUrlGenerator::getCdnDomain()

FileUrlGenerator::generate in src/File/FileUrlGenerator.php

Generates a CDN file URL for local files that are mapped to a CDN.

File

src/File/FileUrlGenerator.php, line 157

Class

FileUrlGenerator

Generates CDN file URLs.

Namespace

Drupal\cdn\File

Code

protected function getCdnDomain(string $uri) {

  // Extension-specific mapping.
  $file_extension = mb_strtolower(pathinfo($uri, PATHINFO_EXTENSION));
  $lookup_table = $this->settings
    ->getLookupTable();
  if (isset($lookup_table[$file_extension])) {
    $key = $file_extension;
  }
  elseif (isset($lookup_table['*'])) {
    $key = '*';
  }
  else {
    return FALSE;
  }
  $result = $lookup_table[$key];
  if ($result === FALSE) {
    return FALSE;
  }
  elseif (is_array($result)) {
    $filename = basename($uri);
    $hash = hexdec(substr(md5($filename), 0, 5));
    return $result[$hash % count($result)];
  }
  else {
    return $result;
  }
}