private function ExifContent::getDataFromFileUri in Exif 8

Same name and namespace in other branches

1. 8.2 src/ExifContent.php \Drupal\exif\ExifContent::getDataFromFileUri()

Retrieve all metadata values from an image.

Parameters

\Drupal\Core\Field\Plugin\Field\FieldType\UriItem $file_uri: The File URI to look at.

Return value

array A map of metadata values by key.

1 call to ExifContent::getDataFromFileUri()

ExifContent::getImageFieldsMetadata in src/ExifContent.php

List fields that contains exif metadata.

File

src/ExifContent.php, line 372

Class

ExifContent

Class ExifContent make link between drupal content and file content.

Namespace

Drupal\exif

Code

private function getDataFromFileUri(UriItem $file_uri) {
  $uri = $file_uri
    ->getValue()['value'];

  /** @var \Drupal\Core\File\FileSystem $file_system */
  $file_system = \Drupal::service('file_system');
  $scheme = $file_system
    ->uriScheme($uri);

  // If the file isn't stored locally make a temporary copy to read the
  // metadata from. We just assume that the temporary files are always local,
  // hard to figure out how to handle this otherwise.
  if (!isset(\Drupal::service('stream_wrapper_manager')
    ->getWrappers(StreamWrapperInterface::LOCAL)[$scheme])) {

    // Local stream.
    $cache_key = md5($uri);
    if (empty($this->localCopiesOfRemoteFiles[$cache_key])) {

      // Create unique local file.
      if (!($this->localCopiesOfRemoteFiles[$cache_key] = file_unmanaged_copy($uri, 'temporary://exif_' . $cache_key . '_' . basename($uri), FILE_EXISTS_REPLACE))) {

        // Log error if creating a copy fails - but return an empty array to
        // avoid type collision.
        \Drupal::logger('exif')
          ->notice('Unable to create local temporary copy of remote file for exif extraction! File %file.', [
          '%file' => $uri,
        ]);
        return [];
      }
    }
    $uri = $this->localCopiesOfRemoteFiles[$cache_key];
  }

  // Read the metadata.
  $exif = ExifFactory::getExifInterface();
  $fullmetadata = $exif
    ->readMetadataTags($file_system
    ->realpath($uri));
  return $fullmetadata;
}