Checks for files with names longer than we can store in the database.
$file: A Drupal file object.
An array. If the file name is too long, it will contain an error message.
function file_validate_name_length(stdClass $file) {
$errors = array();
if (empty($file->filename)) {
$errors[] = t("The file's name is empty. Please give a name to the file.");
}
if (strlen($file->filename) > 240) {
$errors[] = t("The file's name exceeds the 240 characters limit. Please rename the file and try again.");
}
return $errors;
}