Function CheckVersion

pcsx2/SaveState.cpp:1084–1121

}

static bool CheckVersion(const std::string& filename, zip_t* zf, Error* error)
{
	u32 savever;

	auto zff = zip_fopen_managed(zf, EntryFilename_StateVersion, 0);
	if (!zff || zip_fread(zff.get(), &savever, sizeof(savever)) != sizeof(savever))
	{
		Error::SetString(error, "Savestate file does not contain version indicator.");
		return false;
	}

	char version_string[STATE_PCSX2_VERSION_SIZE];
	if (zip_fread(zff.get(), version_string, STATE_PCSX2_VERSION_SIZE) == STATE_PCSX2_VERSION_SIZE)
		version_string[STATE_PCSX2_VERSION_SIZE - 1] = 0;
	else
		StringUtil::Strlcpy(version_string, "Unknown", std::size(version_string));

	// Major version mismatch.  Means we can't load this savestate at all.  Support for it
	// was removed entirely.
	// check for a "minor" version incompatibility; which happens if the savestate being loaded is a newer version
	// than the emulator recognizes.  99% chance that trying to load it will just corrupt emulation or crash.
	if (savever > g_SaveVersion || (savever >> 16) != (g_SaveVersion >> 16))
	{
		std::string current_emulator_version = BuildVersion::GitTag;
		if (current_emulator_version.empty())
		{
			current_emulator_version = "Unknown";
		}
		Error::SetString(error, fmt::format(TRANSLATE_FS("SaveState","This save state was created with PCSX2 version {0}. It is no longer compatible "
											"with your current PCSX2 version {1}.\n\n"
											"If you have any unsaved progress on this save state, you can download the compatible PCSX2 version {0} "
											"from pcsx2.net, load the save state, and save your progress to the memory card."),
											version_string, current_emulator_version));
		return false;
	}

	return true;
}

static zip_int64_t CheckFileExistsInState(zip_t* zf, const char* name, bool required)
{