#pragma once #include "stdtypes.h" class CFileBase { public: enum OpenFlags { modeRead = 0x0000, modeWrite = 0x0001, modeReadWrite = 0x0002, shareCompat = 0x0000, shareExclusive = 0x0010, shareDenyWrite = 0x0020, shareDenyRead = 0x0030, shareDenyNone = 0x0040, modeNoInherit = 0x0080, modeCreate = 0x1000, modeNoTruncate = 0x2000, }; enum Attribute { normal = 0x00, readOnly = 0x01, hidden = 0x02, system = 0x04, volume = 0x08, directory = 0x10, archive = 0x20 }; enum SeekPosition { begin = 0x0, current = 0x1, end = 0x2 }; virtual bool Open(const char * lpszFileName, uint32_t nOpenFlags ) = 0; virtual uint32_t GetPosition() const = 0; virtual long Seek(long lOff, SeekPosition nFrom) = 0; virtual bool SetLength(uint32_t dwNewLen) = 0; virtual uint32_t GetLength() const = 0; virtual uint32_t Read(void* lpBuf, uint32_t nCount) = 0; virtual bool Write(const void* lpBuf, uint32_t nCount) = 0; virtual bool Flush() = 0; virtual bool Close() = 0; virtual bool IsOpen() const = 0; virtual bool SetEndOfFile() = 0; }; class CFile : public CFileBase { // Attributes void * m_hFile; bool m_bCloseOnDelete; public: // Flag values // Constructors CFile(); CFile(void * hFile); CFile(const char * lpszFileName, uint32_t nOpenFlags); // Deconstructors virtual ~CFile(); // Operations virtual bool Open(const char * lpszFileName, uint32_t nOpenFlags ); uint32_t SeekToEnd ( void ); void SeekToBegin ( void ); // Overridables virtual uint32_t GetPosition() const; virtual long Seek(long lOff, SeekPosition nFrom); virtual bool SetLength(uint32_t dwNewLen); virtual uint32_t GetLength() const; virtual uint32_t Read(void* lpBuf, uint32_t nCount); virtual bool Write(const void* lpBuf, uint32_t nCount); virtual bool Flush(); virtual bool Close(); virtual bool IsOpen() const; virtual bool SetEndOfFile(); };