Reorganized types registration code

2025-11-23 22:37:55 +02:00 · 2023-11-11 00:39:08 +02:00
parent 4a7fa9bf8c
commit 5c810df36f
32 changed files with 681 additions and 881 deletions
--- a/lib/serializer/CLoadFile.cpp
+++ b/lib/serializer/CLoadFile.cpp
@@ -0,0 +1,100 @@
+/*
+ * CLoadFile.cpp, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#include "StdInc.h"
+#include "CLoadFile.h"
+
+VCMI_LIB_NAMESPACE_BEGIN
+
+CLoadFile::CLoadFile(const boost::filesystem::path & fname, int minimalVersion)
+	: serializer(this)
+{
+	openNextFile(fname, minimalVersion);
+}
+
+//must be instantiated in .cpp file for access to complete types of all member fields
+CLoadFile::~CLoadFile() = default;
+
+int CLoadFile::read(void * data, unsigned size)
+{
+	sfile->read(reinterpret_cast<char *>(data), size);
+	return size;
+}
+
+void CLoadFile::openNextFile(const boost::filesystem::path & fname, int minimalVersion)
+{
+	assert(!serializer.reverseEndianess);
+	assert(minimalVersion <= SERIALIZATION_VERSION);
+
+	try
+	{
+		fName = fname.string();
+		sfile = std::make_unique<std::fstream>(fname.c_str(), std::ios::in | std::ios::binary);
+		sfile->exceptions(std::ifstream::failbit | std::ifstream::badbit); //we throw a lot anyway
+
+		if(!(*sfile))
+			THROW_FORMAT("Error: cannot open to read %s!", fName);
+
+		//we can read
+		char buffer[4];
+		sfile->read(buffer, 4);
+		if(std::memcmp(buffer, "VCMI", 4) != 0)
+			THROW_FORMAT("Error: not a VCMI file(%s)!", fName);
+
+		serializer & serializer.fileVersion;
+		if(serializer.fileVersion < minimalVersion)
+			THROW_FORMAT("Error: too old file format (%s)!", fName);
+
+		if(serializer.fileVersion > SERIALIZATION_VERSION)
+		{
+			logGlobal->warn("Warning format version mismatch: found %d when current is %d! (file %s)\n", serializer.fileVersion, SERIALIZATION_VERSION , fName);
+
+			auto * versionptr = reinterpret_cast<char *>(&serializer.fileVersion);
+			std::reverse(versionptr, versionptr + 4);
+			logGlobal->warn("Version number reversed is %x, checking...", serializer.fileVersion);
+
+			if(serializer.fileVersion == SERIALIZATION_VERSION)
+			{
+				logGlobal->warn("%s seems to have different endianness! Entering reversing mode.", fname.string());
+				serializer.reverseEndianess = true;
+			}
+			else
+				THROW_FORMAT("Error: too new file format (%s)!", fName);
+		}
+	}
+	catch(...)
+	{
+		clear(); //if anything went wrong, we delete file and rethrow
+		throw;
+	}
+}
+
+void CLoadFile::reportState(vstd::CLoggerBase * out)
+{
+	out->debug("CLoadFile");
+	if(!!sfile && *sfile)
+		out->debug("\tOpened %s Position: %d", fName, sfile->tellg());
+}
+
+void CLoadFile::clear()
+{
+	sfile = nullptr;
+	fName.clear();
+	serializer.fileVersion = 0;
+}
+
+void CLoadFile::checkMagicBytes(const std::string &text)
+{
+	std::string loaded = text;
+	read((void *)loaded.data(), static_cast<unsigned int>(text.length()));
+	if(loaded != text)
+		throw std::runtime_error("Magic bytes doesn't match!");
+}
+
+VCMI_LIB_NAMESPACE_END