Initial checkin

BeefySysLib/DataStream.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include "Common.h"
+
+NS_BF_BEGIN;
+
+class DataStream
+{
+public:
+	bool mBigEndian;
+	int mBitPos;
+	uint32 mCurBitInt;
+	int mReadBitIntPos; // in bits
+
+protected:
+	uint32					GetBitInt(int bitPos);
+
+public:
+	DataStream();
+	virtual ~DataStream() {}
+
+	virtual bool			Eof() = 0;
+	virtual int				GetSize() = 0;
+	virtual void			Read(void* ptr, int size) = 0;
+	virtual void			Write(void* ptr, int size) = 0;
+	virtual void			WriteZeros(int size);
+	virtual void			Align(int size);
+
+	virtual int				GetPos() = 0;
+	virtual void			Seek(int size) = 0;
+	virtual void			SetPos(int pos) = 0;
+
+	virtual int8			ReadInt8();
+	virtual uint8			ReadUInt8();
+	virtual int16			ReadInt16();
+	virtual uint16			ReadUInt16();
+	virtual int32			ReadInt32();
+	virtual int64			ReadInt64();
+	virtual float			ReadFloat();
+	virtual double			ReadDouble();
+	virtual String			ReadAscii8SizedString();	
+	virtual String			ReadAscii32SizedString();	
+	virtual String			ReadUnicode32SizedString();
+	virtual String			ReadSZ();
+
+	template <typename T>
+	void ReadT(const T& val)
+	{
+		Read((void*) &val, sizeof(T));
+	}
+
+	virtual void			Write(float val);
+	virtual void			Write(uint8 val);
+	virtual void			Write(int8 val);
+	virtual void			Write(int16 val);
+	virtual void			Write(int32 val);
+	virtual void			Write(int64 val);
+	virtual void			Write(const StringImpl& val);
+	virtual void			Write(DataStream& refStream);
+	virtual void			WriteSNZ(const StringImpl& val);
+	virtual void			WriteSZ(const StringImpl& val);
+	
+	template <typename T>
+	void WriteT(const T& val)
+	{
+		Write((void*)&val, sizeof(T));
+	}
+	
+	virtual void			SyncBitPos();
+	virtual void			SyncBytePos();	
+	virtual int				ReadUBits(int bits);	
+	virtual void			SeekBits(int bits);	
+};
+
+NS_BF_END;