/**
* Returns whether a database exists
*
* @param string $name name of the database to find
* @param string @driver driver to test for
* @return boolean true if the database exists
*/
function db_exists($name, $driver = 'file')
{
if (!function_exists('dba_open') || $driver == 'file') {
// the file driver stores data in two files
return file_exists($name . '.dat') && file_exists($name . '.idx');
} elseif (in_array($driver, array('db2', 'db3', 'db4', 'gdbm'))) {
// these drivers store data in one file
return file_exists($name);
} else {
// do not know how other drivers store data
return DBA::raiseError(DBA_ERROR_NO_DRIVER, NULL, NULL, 'driver: ' . $driver);
}
}
