Method Write

lib/mdflib/mdflib/src/cg3block.cpp:105–177

}

uint64_t Cg3Block::Write(std::streambuf& buffer) {
  const bool update =
      FilePosition() > 0;  // Write or update the values inside the block
  nof_channels_ = static_cast<uint16_t>(cn_list_.size());

  if (!update) {
    block_type_ = "CG";
    block_size_ = (2 + 2) + (3 * 4) + 2 + 2 + 2 + 4 + 4;
    link_list_.resize(
        3, 0);  // Note that an extra link is added at the end of the block.
  }

  int64_t sr_link =
      0;  // This link is added at the end of the block not at the beginning
  for (size_t sr_index = 0; sr_index < sr_list_.size(); ++sr_index) {
    auto &sr3 = sr_list_[sr_index];
    if (!sr3 || sr3->FilePosition() > 0) {
      continue;
    }
    sr3->Write(buffer);
    if (sr_index == 0) {
      sr_link = sr3->FilePosition();
    } else {
      if (auto &prev = sr_list_[sr_index - 1]; prev) {
        prev->UpdateLink(buffer, kIndexNext, sr3->FilePosition());
      }
    }
  }

  uint64_t bytes = update ? MdfBlock::Update(buffer) : MdfBlock::Write(buffer);
  if (!update) {
    bytes += WriteNumber(buffer, record_id_);
    bytes += WriteNumber(buffer, nof_channels_);
    bytes += WriteNumber(buffer, size_of_data_record_);
    bytes += WriteNumber(buffer, nof_records_);
    bytes += WriteNumber(buffer, static_cast<uint32_t>(sr_link));
  } else {
    // Only nof_records and SR blocks may be added
    bytes += StepFilePosition(buffer, sizeof(record_id_) + sizeof(nof_channels_) +
                                        sizeof(size_of_data_record_));
    bytes += WriteNumber(buffer, nof_records_);
    // Check if any SR blocks been added. This typical happens after a
    // measurement.
    if (sr_link > 0) {
      bytes += WriteNumber(buffer, static_cast<uint32_t>(sr_link));
    } else {
      bytes += StepFilePosition(buffer, sizeof(uint32_t));
    }
  }

  for (size_t cn_index = 0; cn_index < cn_list_.size(); ++cn_index) {
    auto &cn3 = cn_list_[cn_index];
    if (!cn3 || cn3->FilePosition() > 0) {
      continue;
    }
    cn3->Write(buffer);
    if (cn_index == 0) {
      UpdateLink(buffer, kIndexCn, cn3->FilePosition());