Core: Add Uuid class

src/Nazara/Core/Uuid.cpp

@@ -0,0 +1,65 @@
+// Copyright (C) 2022 Full Cycle Games
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Uuid.hpp>
+#include <ostream>
+
+#ifdef NAZARA_PLATFORM_WINDOWS
+#include <objbase.h>
+#elif defined(NAZARA_PLATFORM_LINUX) || defined(NAZARA_PLATFORM_MACOSX)
+#include <uuid/uuid.h>
+#endif
+
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	std::array<char, 37> Uuid::ToStringArray() const
+	{
+		std::array<char, 37> guidStr; //< Including \0
+		std::snprintf(guidStr.data(), guidStr.size(), "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+		              m_guid[0], m_guid[1], m_guid[2], m_guid[3], m_guid[4], m_guid[5], m_guid[6], m_guid[7],
+		              m_guid[8], m_guid[9], m_guid[10], m_guid[11], m_guid[12], m_guid[13], m_guid[14], m_guid[15]);
+
+		return guidStr;
+	}
+
+	Uuid Uuid::Generate()
+	{
+		std::array<UInt8, 16> guid;
+
+#ifdef NAZARA_PLATFORM_WINDOWS
+		GUID id;
+		CoCreateGuid(&id);
+
+		for (unsigned int i = 0; i < 4; ++i)
+			guid[i] = static_cast<UInt8>(id.Data1 >> ((3 - i) * 8 & 0xFF));
+
+		for (unsigned int i = 0; i < 2; ++i)
+			guid[4 + i] = static_cast<UInt8>(id.Data2 >> ((1 - i) * 8 & 0xFF));
+
+		for (unsigned int i = 0; i < 2; ++i)
+			guid[6 + i] = static_cast<UInt8>(id.Data3 >> ((1 - i) * 8 & 0xFF));
+
+		for (unsigned int i = 0; i < 8; ++i)
+			guid[8 + i] = static_cast<UInt8>(id.Data4[i]);
+#elif defined(NAZARA_PLATFORM_LINUX) || defined(NAZARA_PLATFORM_MACOSX)
+		uuid_t id;
+		uuid_generate(id);
+
+		std::copy(std::begin(id), std::end(id), guid.begin());
+#else
+#error Missing platform support
+#endif
+
+		return guid;
+	}
+
+	std::ostream& operator<<(std::ostream& out, const Uuid& guid)
+	{
+		std::array<char, 37> guidStr = guid.ToStringArray();
+
+		return out << guidStr.data();
+	}
+}