From dd6edb96f334041460e4f052959501167ccbaa3b Mon Sep 17 00:00:00 2001
From: Epicalert <epicalert@protonmail.com>
Date: Sun, 7 Feb 2021 22:01:31 +0800
Subject: [PATCH] Check model format version

---
 src/model.cpp | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/model.cpp b/src/model.cpp
index 962ff17..0075c60 100644
--- a/src/model.cpp
+++ b/src/model.cpp
@@ -3,10 +3,14 @@
 #include <zip.h>
 #include <tomlcpp.hpp> //dynamically link tomlcpp if it becomes common in repositories
 #include <model.hpp>
+#include <config.hpp>
 
 #define BUFFER_SIZE_MODEL_DESC	8192		// 8 KiB
 #define BUFFER_SIZE_TEXTURE	16777220	// 16 MiB
 
+#define SUPPORTED_MODEL_MAJOR 0
+#define SUPPORTED_MODEL_MINOR 1
+
 void textureFromArchive(zip_t* archive, const char* path, ModelPart* part, size_t slot, std::string triggerName) {
 	zip_file_t* textureFile = zip_fopen(archive, path, 0);
 	if (textureFile != NULL) {
@@ -42,11 +46,40 @@ Model::Model(const char* path) {
 		std::cerr << "cannot parse model.toml! " << std::endl << modelDesc.errmsg << std::endl;
 	}
 
-	// get name
+	// get format table
+	auto format = modelDesc.table->getTable("format");
+	if (!format) {
+		std::cerr << "Model does not have a format table!" << std::endl;
+	} else {
+		// get format version
+		auto formatMajResult = format->getInt("version_major");
+		auto formatMinResult = format->getInt("version_minor");
+
+		if (formatMajResult.first && formatMinResult.first) {
+			// check format version
+			if (formatMajResult.second != SUPPORTED_MODEL_MAJOR ||
+				formatMinResult.second > SUPPORTED_MODEL_MINOR ) {
+
+				std::cerr << "Model format version " <<
+					formatMajResult.second << "." << formatMinResult.second <<
+					" is unsupported! This version of " << PROJECT_NAME << " supports model file version " <<
+					SUPPORTED_MODEL_MAJOR << ".0 to version " <<
+					SUPPORTED_MODEL_MAJOR << "." << SUPPORTED_MODEL_MINOR << std::endl;
+			}
+		} else {
+			std::cerr << "Model does not define a format version!" << std::endl;
+		}
+	}
+
+
+	// get model info table
 	auto modelInfo = modelDesc.table->getTable("model_info");
+
 	if (!modelInfo) {
 		std::cerr << "Model does not have a model_info table!" << std::endl;
 	} else {
+
+		// get name
 		auto nameResult = modelInfo->getString("name");
 
 		if (!nameResult.first) {
@@ -56,7 +89,7 @@ Model::Model(const char* path) {
 		}
 	}
 
-
+	// parse parts
 	auto partsDescArray = modelDesc.table->getArray("part");
 
 	auto partsVec = *partsDescArray->getTableVector();