protected function FileMetadataManager::calculateHash in File metadata manager 8

Same name and namespace in other branches

1. 8.2 src/FileMetadataManager.php \Drupal\file_mdm\FileMetadataManager::calculateHash()

Returns an hash for the URI, used internally by the manager.

Parameters

string $uri: The URI to a file.

Return value

string An hash string.

4 calls to FileMetadataManager::calculateHash()

FileMetadataManager::deleteCachedMetadata in src/FileMetadataManager.php

Deletes the all the cached metadata for the URI.

FileMetadataManager::has in src/FileMetadataManager.php

Determines if the URI is currently in use by the manager.

FileMetadataManager::release in src/FileMetadataManager.php

Releases the FileMetadata object for the URI.

FileMetadataManager::uri in src/FileMetadataManager.php

Returns a FileMetadata object for the URI, creating it if necessary.

File

src/FileMetadataManager.php, line 92

Class

FileMetadataManager

A service class to provide file metadata.

Namespace

Drupal\file_mdm

Code

protected function calculateHash($uri) {

  // Sanitize URI removing duplicate slashes, if any.
  // @see http://stackoverflow.com/questions/12494515/remove-unnecessary-slashes-from-path
  $uri = preg_replace('/([^:])(\\/{2,})/', '$1/', $uri);

  // If URI is invalid and no local file path exists, return NULL.
  if (!file_valid_uri($uri) && !$this->fileSystem
    ->realpath($uri)) {
    return NULL;
  }

  // Return a hash of the URI.
  return hash('sha256', $uri);
}