getFieldStringDateTime method

String? getFieldStringDateTime(DateTime? d)

Implementation

String? getFieldStringDateTime(DateTime? d) {
  // Sanity check
  if (d == null) return null;

  final int difference =
      d.millisecondsSinceEpoch - DbaseFileHeader.MILLIS_SINCE_4713;

  final int days = (difference ~/ MILLISECS_PER_DAY);
  final int time = (difference % MILLISECS_PER_DAY);

  List<int> outBytes = [
    ...ByteConversionUtilities.bytesFromInt32(days),
    ...ByteConversionUtilities.bytesFromInt32(time),
  ];
  return String.fromCharCodes(outBytes);
  // try (ByteArrayOutputStream o_bytes = new ByteArrayOutputStream();
  //         DataOutputStream o_stream =
  //                 new DataOutputStream(new BufferedOutputStream(o_bytes))) {
  //                   B

  //     o_stream.writeInt(days);
  //     o_stream.writeInt(time);
  //     o_stream.flush();
  //     byte[] bytes = o_bytes.toByteArray();
  //     // Cast the byte values to char as a workaround for erroneous byte
  //     // array retrieval in 64-bit machines
  //     char[] out = {
  //         // Days, after reverse.
  //         (char) bytes[3], (char) bytes[2], (char) bytes[1], (char) bytes[0],
  //         // Time in millis, after reverse.
  //         (char) bytes[7], (char) bytes[6], (char) bytes[5], (char) bytes[4],
  //     };

  //     return new String(out);
  // } catch ( e) {
  //     // This is always just a int serialization,
  //     // there is no way to recover from here.
  //     return null;
  // }
}