Function WritePaddedBlank

cpp/src/arrow/ipc/feather.cc:130–142

For compatibility, we need to write any data sometimes just to keep producing files that can be read with an older reader.

/// For compatibility, we need to write any data sometimes just to keep producing
/// files that can be read with an older reader.
Status WritePaddedBlank(io::OutputStream* stream, int64_t length,
                        int64_t* bytes_written) {
  const uint8_t null = 0;
  for (int64_t i = 0; i < length; i++) {
    RETURN_NOT_OK(stream->Write(&null, 1));
  }
  int64_t remainder = PaddedLength(length) - length;
  if (remainder != 0) {
    RETURN_NOT_OK(stream->Write(kPaddingBytes, remainder));
  }
  *bytes_written = length + remainder;
  return Status::OK();
}

// ----------------------------------------------------------------------
// ReaderV1