detectDriver method

String? detectDriver(String connectionString)

Detects the database driver from a connection string.

Returns the driver name (e.g. "sqlserver", "oracle", "postgres", "mysql", "mongodb", "sqlite", "sybase") if detected, or null if unknown.

Implementation

String? detectDriver(String connectionString) {
  final connStrPtr = connectionString.toNativeUtf8();
  const bufferLen = 64;
  final outBuf = malloc<ffi.Int8>(bufferLen);
  try {
    final result = _bindings.odbc_detect_driver(
      connStrPtr.cast<bindings.Utf8>(),
      outBuf,
      bufferLen,
    );
    if (result != 1) {
      return null;
    }
    final end = outBuf.asTypedList(bufferLen).indexOf(0);
    final len = end < 0 ? bufferLen : end;
    if (len == 0) {
      return null;
    }
    final bytes =
        outBuf.asTypedList(len).map((e) => e.toUnsigned(8)).toList();
    return utf8.decode(bytes);
  } finally {
    malloc
      ..free(connStrPtr)
      ..free(outBuf);
  }
}