Core: Bring back MemoryStream class (It's not perfect but necessary until a better replacement comes out)

Former-commit-id: e3106b98c9825e313525298a8d46ff9c40bf5027

include/Nazara/Core/MemoryStream.hpp

@@ -0,0 +1,58 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_MEMORYSTREAM_HPP
+#define NAZARA_MEMORYSTREAM_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Core/ByteArray.hpp>
+#include <Nazara/Core/Stream.hpp>
+
+namespace Nz
+{
+	class NAZARA_CORE_API MemoryStream : public Stream
+	{
+		public:
+			MemoryStream();
+			MemoryStream(const void* ptr, unsigned int size);
+			MemoryStream(const MemoryStream&) = default;
+			MemoryStream(MemoryStream&&) = default;
+			~MemoryStream() = default;
+
+			void Clear();
+
+			bool EndOfStream() const override;
+
+
+			const ByteArray& GetBuffer() const;
+			const UInt8* GetData() const;
+			UInt64 GetCursorPos() const override;
+			UInt64 GetSize() const override;
+
+			bool SetCursorPos(UInt64 offset) override;
+
+			MemoryStream& operator=(const MemoryStream&) = default;
+			MemoryStream& operator=(MemoryStream&&) = default;
+
+		private:
+			void FlushStream() override;
+			std::size_t ReadBlock(void* buffer, std::size_t size) override;
+			std::size_t WriteBlock(const void* buffer, std::size_t size) override;
+
+			ByteArray m_buffer;
+			UInt64 m_pos;
+	};
+
+	class AbstractHash;
+
+	inline bool HashAppend(AbstractHash* hash, const String& string);
+	NAZARA_CORE_API bool Serialize(SerializationContext& context, const String& string);
+	NAZARA_CORE_API bool Unserialize(UnserializationContext& context, String* string);
+}
+
+#include <Nazara/Core/MemoryStream.inl>
+
+#endif // NAZARA_MEMORYSTREAM_HPP