/**
* Hilfsfunktion zum Auslesen aller noch "unerledigten" Updates
* @param string $update_dir absoluter Pfad zum Updates-Verzeichnis
* @param DbPdo $db eine offene Datenbankverbindung
* @return array list of filenames
*/
function get_updates_to_do($update_dir, $db)
{
$filenames = array();
// get all available updates from updates directory
$update_dir_handle = opendir($update_dir);
if ($update_dir_handle) {
$filenames['update_files'] = array();
while ($update_file = readdir($update_dir_handle)) {
if ($update_file != "update.css" && !is_dir($update_file) && $update_file[0] != ".") {
$filenames['update_files'][] = $update_file;
}
}
}
unset($update_file);
closedir($update_dir_handle);
// set defaults for backwards compatibility
$filenames['migrations_done'] = array();
$filenames['updates_to_do'] = $filenames['update_files'];
if ($db->table_exists("migrations")) {
$sql = "SELECT * FROM " . PREFIX . "migrations";
$result = $db->prepare_and_execute($sql);
$filenames['migrations_done'] = array();
foreach ($result as $migration_done) {
$filenames['migrations_done'][] = $migration_done['filename'];
}
$filenames['updates_to_do'] = array_diff($filenames['update_files'], $filenames['migrations_done']);
}
sort($filenames['updates_to_do']);
sort($filenames['update_files']);
sort($filenames['migrations_done']);
return $filenames;
}
