Method GetUniqueName

Modules/Core/src/DataManagement/mitkDataStorage.cpp:132–188

}

std::string mitk::DataStorage::GetUniqueName(const std::string& baseName, const DataNode* sourceNode, bool onlyDirectDerivations) const
{
  if (sourceNode == nullptr)
  {
    if (this->GetNamedNode(baseName) == nullptr)
      return baseName;
  }
  else
  {
    if (this->GetNamedDerivedNode(baseName.c_str(), sourceNode, onlyDirectDerivations))
      return baseName;
  }

  const std::regex numberPattern("\\s(\\d+)$");
  std::set<int> takenNumbers;

  auto condition = mitk::NodePredicateFunction::New([&](const mitk::DataNode *node) {
    const auto name = node->GetName();

    if (name.rfind(baseName, 0) == 0)
    {
      std::string remainingName = name.substr(baseName.length());
      std::smatch match;

      if (std::regex_match(remainingName, match, numberPattern))
      {
        takenNumbers.insert(std::stoi(match[1].str()));
        return true;
      }
    }

    return false;
  });

  auto nodes = sourceNode != nullptr
    ? this->GetDerivations(sourceNode, condition, onlyDirectDerivations)
    : this->GetSubset(condition);

  if (nodes->empty())
    return baseName + " 2";

  int nextNumber = 2;

  for (int takenNumber : takenNumbers)
  {
    if (takenNumber == nextNumber)
    {
      ++nextNumber;
    }
    else if (takenNumber > nextNumber)
    {
      break;
    }
  }

  return baseName + ' ' + std::to_string(nextNumber);
}