Function readVectorInfo

IO/XML/vtkXMLReader.cxx:1235–1272

// make sure that keys with RequiredLength work properly.
template <class ValueType, class KeyType>
bool readVectorInfo(KeyType* key, vtkInformation* info, vtkXMLDataElement* element)
{
  const char* lengthData = element->GetAttribute("length");
  int length;
  if (!extractValue(lengthData, length))
  {
    return false;
  }

  if (length == 0)
  {
    info->Set(key, nullptr, 0);
  }

  std::vector<ValueType> values;
  for (int i = 0; i < length; ++i)
  {
    std::ostringstream indexStr;
    indexStr << i;
    vtkXMLDataElement* valueElement =
      element->FindNestedElementWithNameAndAttribute("Value", "index", indexStr.str().c_str());
    if (!valueElement)
    {
      return false;
    }

    const char* valueData = valueElement->GetCharacterData();
    ValueType value;
    if (!extractValue(valueData, value))
    {
      return false;
    }
    values.push_back(value);
  }
  info->Set(key, values.data(), length);

  return true;
}

// Overload for string vector keys. There is no API for 'set all at once',
// so we'll need to use Append (which can't work with RequiredLength vector