Method ParseFeatureProperties

IO/GeoJSON/vtkGeoJSONReader.cxx:259–325

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//------------------------------------------------------------------------------
void vtkGeoJSONReader::GeoJSONReaderInternal::ParseFeatureProperties(
  const Json::Value& propertiesNode, std::vector<GeoJSONProperty>& featureProperties,
  const char* serializedPropertiesArrayName)
{
  featureProperties.clear();

  GeoJSONProperty spec;
  GeoJSONProperty property;
  std::vector<GeoJSONProperty>::iterator iter = this->PropertySpecs.begin();
  for (; iter != this->PropertySpecs.end(); ++iter)
  {
    spec = *iter;
    property.Name = spec.Name;

    Json::Value const& propertyNode = propertiesNode[spec.Name];
    if (propertyNode.isNull())
    {
      property.Value = spec.Value;
      featureProperties.push_back(property);
      continue;
    }

    // (else)
    switch (spec.Value.GetType())
    {
      case VTK_BIT:
        property.Value = vtkVariant(propertyNode.asBool());
        break;

      case VTK_DOUBLE:
        property.Value = vtkVariant(propertyNode.asDouble());
        break;

      case VTK_INT:
        property.Value = vtkVariant(propertyNode.asInt());
        break;

      case VTK_STRING:
        property.Value = vtkVariant(propertyNode.asString());
        break;
    }

    featureProperties.push_back(property);
  }

  // Add GeoJSON string if enabled
  if (serializedPropertiesArrayName)
  {
    property.Name = serializedPropertiesArrayName;

    Json::StreamWriterBuilder builder;
    builder["commentStyle"] = "None";
    builder["indentation"] = "";
    std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());

    std::stringstream stream;
    writer->write(propertiesNode, &stream);
    std::string propString = stream.str();