function Finder::__construct

File

core/lib/Drupal/Core/DefaultContent/Finder.php, line 28

Class

Finder

Finds all default content in a directory, in dependency order.

Namespace

Code

public function __construct(string $path) {
  try {
    // Scan for all YAML files in the content directory.
    $finder = SymfonyFinder::create()->in($path)
      ->files()
      ->name('*.yml');
  } catch (DirectoryNotFoundException) {
    $this->data = [];
    return;
  }
  $graph = $files = [];
  /** @var \Symfony\Component\Finder\SplFileInfo $file */
  foreach ($finder as $file) {
    /** @var array{_meta: array{uuid: string|null, depends: array<string, string>|null}} $decoded */
    $decoded = Yaml::decode($file->getContents());
    $decoded['_meta']['path'] = $file->getPathname();
    $uuid = $decoded['_meta']['uuid'] ?? throw new ImportException($decoded['_meta']['path'] . ' does not have a UUID.');
    $files[$uuid] = $decoded;
    // For the graph to work correctly, every entity must be mentioned in it.
    // This is inspired by
    // \Drupal\Core\Config\Entity\ConfigDependencyManager::getGraph().
    $graph += [
      $uuid => [
        'edges' => [],
        'uuid' => $uuid,
      ],
    ];
    foreach ($decoded['_meta']['depends'] ?? [] as $dependency_uuid => $entity_type) {
      $graph[$dependency_uuid]['edges'][$uuid] = TRUE;
      $graph[$dependency_uuid]['uuid'] = $dependency_uuid;
    }
  }
  ksort($graph);
  // Sort the dependency graph. The entities that are dependencies of other
  // entities should come first.
  $graph_object = new Graph($graph);
  $sorted = $graph_object->searchAndSort();
  uasort($sorted, SortArray::sortByWeightElement(...));
  $entities = [];
  foreach ($sorted as [
    'uuid' => $uuid,
  ]) {
    if (array_key_exists($uuid, $files)) {
      $entities[$uuid] = $files[$uuid];
    }
  }
  $this->data = $entities;
}