Function MappingToCsv

tools/track_analyzing/track_analyzer/utils.cpp:158–200

}

void MappingToCsv(string const & keyName, Stats::NameToCountMapping const & mapping, bool printPercentage,
                  basic_ostream<char> & ss)
{
  struct KeyValue
  {
    string m_key;
    uint64_t m_value = 0;
  };

  if (mapping.empty())
    return;

  ss << keyName;
  if (printPercentage)
    ss << ",number,percent\n";
  else
    ss << ",number\n";

  // Sorting from bigger to smaller values.
  vector<KeyValue> keyValues;
  keyValues.reserve(mapping.size());
  for (auto const & kv : mapping)
    keyValues.push_back({kv.first, kv.second});

  sort(keyValues.begin(), keyValues.end(),
       [](KeyValue const & a, KeyValue const & b) { return a.m_value > b.m_value; });

  uint64_t allValues = 0;
  for (auto const & kv : keyValues)
    allValues += kv.m_value;

  for (auto const & kv : keyValues)
  {
    if (kv.m_value == 0)
      continue;

    ss << kv.m_key << "," << kv.m_value;
    if (printPercentage)
      ss << "," << 100.0 * static_cast<double>(kv.m_value) / allValues;
    ss << '\n';
  }
  ss.flush();
}

void MappingFromCsv(basic_istream<char> & ss, Stats::NameToCountMapping & mapping)
{