public function ClassFinder::findFile in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Component/ClassFinder/ClassFinder.php \Drupal\Component\ClassFinder\ClassFinder::findFile()

Finds a class.

Parameters

string $class: The name of the class.

Return value

string|null The name of the class or NULL if not found.

Overrides ClassFinderInterface::findFile

File

core/lib/Drupal/Component/ClassFinder/ClassFinder.php, line 13

Class

ClassFinder

A Utility class that uses active autoloaders to find a file for a class.

Namespace

Drupal\Component\ClassFinder

Code

public function findFile($class) {
  $loaders = spl_autoload_functions();
  foreach ($loaders as $loader) {
    if (is_array($loader) && isset($loader[0]) && is_object($loader[0]) && method_exists($loader[0], 'findFile')) {
      $file = call_user_func_array([
        $loader[0],
        'findFile',
      ], [
        $class,
      ]);

      // Different implementations return different empty values. For example,
      // \Composer\Autoload\ClassLoader::findFile() returns FALSE whilst
      // \Drupal\Component\ClassFinder\ClassFinderInterface::findFile()
      // documents that a NULL should be returned.
      if (!empty($file)) {
        return $file;
      }
    }
  }
  return NULL;
}