CnC_Remastered_Collection

Command and Conquer: Red Alert
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BFIOFILE.H (3972B)

      1 //
      2 // Copyright 2020 Electronic Arts Inc.
      3 //
      4 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is free 
      5 // software: you can redistribute it and/or modify it under the terms of 
      6 // the GNU General Public License as published by the Free Software Foundation, 
      7 // either version 3 of the License, or (at your option) any later version.
      8 
      9 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 
     10 // in the hope that it will be useful, but with permitted additional restrictions 
     11 // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
     12 // distributed with this program. You should have received a copy of the 
     13 // GNU General Public License along with permitted additional restrictions 
     14 // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
     15 
     16 /* $Header: /CounterStrike/BFIOFILE.H 1     3/03/97 10:24a Joe_bostic $ */
     17 /***********************************************************************************************
     18  ***              C O N F I D E N T I A L  ---  W E S T W O O D  S T U D I O S               ***
     19  ***********************************************************************************************
     20  *                                                                                             *
     21  *                 Project Name : Westwood Library                                             *
     22  *                                                                                             *
     23  *                    File Name : BFIOFILE.H                                                   *
     24  *                                                                                             *
     25  *                   Programmer : David R. Dettmer                                             *
     26  *                                                                                             *
     27  *                   Start Date : November 10, 1995                                            *
     28  *                                                                                             *
     29  *                  Last Update : November 10, 1995  [DRD]                                     *
     30  *                                                                                             *
     31  *---------------------------------------------------------------------------------------------*
     32  * Functions:                                                                                  *
     33  * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
     34 
     35 #ifndef BFIOFILE_H
     36 #define BFIOFILE_H
     37 
     38 #include	"rawfile.h"
     39 
     40 /*
     41 **	This derivation of the raw file class handles buffering the input/output in order to
     42 **	achieve greater speed. The buffering is not active by default. It must be activated
     43 **	by setting the appropriate buffer through the Cache() function.
     44 */
     45 class BufferIOFileClass : public RawFileClass
     46 {
     47 	public:
     48 
     49 		BufferIOFileClass(char const *filename);
     50 		BufferIOFileClass(void);
     51 		virtual ~BufferIOFileClass(void);
     52 
     53 		bool Cache( long size=0, void *ptr=NULL );
     54 		void Free( void );
     55 		bool Commit( void );
     56 		virtual char const * Set_Name(char const *filename);
     57 		virtual int Is_Available(int forced=false);
     58 		virtual int Is_Open(void) const;
     59 		virtual int Open(char const *filename, int rights=READ);
     60 		virtual int Open(int rights=READ);
     61 		virtual long Read(void *buffer, long size);
     62 		virtual long Seek(long pos, int dir=SEEK_CUR);
     63 		virtual long Size(void);
     64 		virtual long Write(void const *buffer, long size);
     65 		virtual void Close(void);
     66 
     67 		enum {MINIMUM_BUFFER_SIZE=1024};
     68 
     69 	private:
     70 
     71 		unsigned IsAllocated:1;
     72 		unsigned IsOpen:1;
     73 		unsigned IsDiskOpen:1;
     74 		unsigned IsCached:1;
     75 		unsigned IsChanged:1;
     76 		unsigned UseBuffer:1;
     77 
     78 		int BufferRights;
     79 
     80 		void *Buffer;
     81 
     82 		long BufferSize;
     83 		long BufferPos;
     84 		long BufferFilePos;
     85 		long BufferChangeBeg;
     86 		long BufferChangeEnd;
     87 		long FileSize;
     88 		long FilePos;
     89 		long TrueFileStart;
     90 };
     91 
     92 #endif