more flexible csv engine

Seems csv get engine is almost generic enough to be a "delimited" engine and allow me to use importexportapi_get_data(). In the function below, all I need is a way to override "," with "\t" and the enclosure with "" (ie. nothing).

function importexportapi_csv_get_parsed($csv_doc, $field_delimiter = ',', $record_delimiter = "\n", $enclosure = "\"", $optional = 1)