Function parse_dict

include/libnpy/npy.hpp:221–271

Parses the string representation of a Python dict The keys need to be known and may not appear anywhere else in the data. */

   The keys need to be known and may not appear anywhere else in the data.
 */
inline std::unordered_map <std::string, std::string> parse_dict(std::string in, const std::vector <std::string> &keys) {
  std::unordered_map <std::string, std::string> map;

  if (keys.size() == 0)
    return map;

  in = trim(in);

  // unwrap dictionary
  if ((in.front() == '{') && (in.back() == '}'))
    in = in.substr(1, in.length() - 2);
  else
    throw std::runtime_error("Not a Python dictionary.");

  std::vector <std::pair<size_t, std::string>> positions;

  for (auto const &value : keys) {
    size_t pos = in.find("'" + value + "'");

    if (pos == std::string::npos)
      throw std::runtime_error("Missing '" + value + "' key.");

    std::pair <size_t, std::string> position_pair{pos, value};
    positions.push_back(position_pair);
  }

  // sort by position in dict
  std::sort(positions.begin(), positions.end());

  for (size_t i = 0; i < positions.size(); ++i) {
    std::string raw_value;
    size_t begin{positions[i].first};
    size_t end{std::string::npos};

    std::string key = positions[i].second;

    if (i + 1 < positions.size())
      end = positions[i + 1].first;

    raw_value = in.substr(begin, end - begin);

    raw_value = trim(raw_value);

    if (raw_value.back() == ',')
      raw_value.pop_back();

    map[key] = get_value_from_map(raw_value);
  }

  return map;
}

/**
  Parses the string representation of a Python boolean