function system_retrieve_file in Zircon Profile 8
Same name and namespace in other branches
- 8.0 core/modules/system/system.module \system_retrieve_file()
Attempts to get a file using Guzzle HTTP client and to store it locally.
Parameters
string $url: The URL of the file to grab.
string $destination: Stream wrapper URI specifying where the file should be placed. If a directory path is provided, the file is saved into that directory under its original name. If the path contains a filename as well, that one will be used instead. If this value is omitted, the site's default files scheme will be used, usually "public://".
bool $managed: If this is set to TRUE, the file API hooks will be invoked and the file is registered in the database.
int $replace: Replace behavior when the destination file already exists:
- FILE_EXISTS_REPLACE: Replace the existing file.
- FILE_EXISTS_RENAME: Append _{incrementing number} until the filename is unique.
- FILE_EXISTS_ERROR: Do nothing and return FALSE.
Return value
mixed One of these possibilities:
- If it succeeds and $managed is FALSE, the location where the file was saved.
- If it succeeds and $managed is TRUE, a \Drupal\file\FileInterface object which describes the file.
- If it fails, FALSE.
3 calls to system_retrieve_file()
- locale_translation_download_source in core/
modules/ locale/ locale.batch.inc - Downloads a translation file from a remote server.
- RetrieveFileTest::testFileRetrieving in core/
modules/ system/ src/ Tests/ System/ RetrieveFileTest.php - Invokes system_retrieve_file() in several scenarios.
- update_manager_file_get in core/
modules/ update/ update.manager.inc - Copies a file from the specified URL to the temporary directory for updates.
File
- core/
modules/ system/ system.module, line 1354 - Configuration system that lets administrators modify the workings of the site.
Code
function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME) {
$parsed_url = parse_url($url);
if (!isset($destination)) {
$path = file_build_uri(drupal_basename($parsed_url['path']));
}
else {
if (is_dir(drupal_realpath($destination))) {
// Prevent URIs with triple slashes when glueing parts together.
$path = str_replace('///', '//', "{$destination}/") . drupal_basename($parsed_url['path']);
}
else {
$path = $destination;
}
}
try {
$data = (string) \Drupal::httpClient()
->get($url)
->getBody();
$local = $managed ? file_save_data($data, $path, $replace) : file_unmanaged_save_data($data, $path, $replace);
} catch (RequestException $exception) {
drupal_set_message(t('Failed to fetch file due to error "%error"', array(
'%error' => $exception
->getMessage(),
)), 'error');
return FALSE;
}
if (!$local) {
drupal_set_message(t('@remote could not be saved to @path.', array(
'@remote' => $url,
'@path' => $path,
)), 'error');
}
return $local;
}