tsx_v2.cpp

#include "tsx.h"
// truncated headers and namespaces

class TSXTilesetLoader : public pugi::xml_tree_walker {
  virtual bool for_each(pugi::xml_node& xmlNode) {
    // truncated code...
    AddResource(protoNode, resType, xmlNode);

    return true;
  }

  void AddResource(buffers::TreeNode *protoNode, std::string resType, pugi::xml_node &xmlNode) {
    // truncated code...
    if (createFunc != factoryMap.end()) {
        auto *res = createFunc->second(protoNode);
        PackRes(xmlNode, res, resType);
        return;
    }
    // truncated code...
  }

  void PackRes(pugi::xml_node &xmlNode, google::protobuf::Message *m, const std::string& resType, std::string fieldPrefix = "") {
    const google::protobuf::Reflection *refl = m->GetReflection();
    // truncated code...

    for (int i = 0; i < desc->field_count(); i++) {
      const google::protobuf::FieldDescriptor *field = m->GetDescriptor()->field(i);
      // truncated code...
      const google::protobuf::FieldOptions opts = field->options();

      // tmx_option_string is used to fetch correct attribute from current xml node
      std::string tsxPropertyName = fieldPrefix + opts.GetExtension(buffers::tmx);
      pugi::xml_attribute attr;

      // truncated code...
      attr = xmlNode.attribute(tsxPropertyName.c_str());
      
      switch (field->cpp_type()) {
        case CppType::CPPTYPE_INT32: {
          refl->SetInt32(m, field, attr.as_int());
          break;
        }
        // truncated cases
        case CppType::CPPTYPE_STRING: {
          const bool isFilePath = opts.GetExtension(buffers::file_path);
          std::string value;
          if(isFilePath) {
            std::string parentDirPath = tsxPath.parent_path().string()+"/";
            value = parentDirPath + attr.as_string();
          }
          else{
            value = attr.as_string();
          }

          refl->SetString(m, field, value);
          break;
        }
      }
    }
  }
};
// truncated code...