114 lines
4.7 KiB
C++
114 lines
4.7 KiB
C++
/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* $Header: /CounterStrike/CDFILE.H 1 3/03/97 10:24a Joe_bostic $ */
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/***********************************************************************************************
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*** 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 ***
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***********************************************************************************************
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* *
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* Project Name : Westwood LIbrary *
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* *
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* File Name : CDFILE.H *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : October 18, 1994 *
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* *
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* Last Update : October 18, 1994 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef CDFILE_H
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#define CDFILE_H
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#include <dos.h>
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#include "bfiofile.h"
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/*
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** This class is derived from the BufferIOFileClass. This class adds the functionality of searching
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** across multiple directories or drives. It is designed for the typical case of a CD-ROM game
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** were some data exists in the current directory (hard drive) and the rest exists on the CD-ROM.
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** Searching for the file occurs by first examining the current directory. If the file does not
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** exist there, then all the paths available are examined in turn until the file can be found.
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** For opening files to write, only the current directory is examined. The directory search order
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** is controlled by the path list as submitted to Set_Search_Drives(). The format of the path
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** string is the same as the DOS path string.
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*/
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class CDFileClass : public BufferIOFileClass
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{
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public:
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CDFileClass(char const *filename);
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CDFileClass(void);
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virtual ~CDFileClass(void) {};
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virtual char const * Set_Name(char const *filename);
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virtual int Open(char const *filename, int rights=READ);
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virtual int Open(int rights=READ);
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void Searching(int on) {IsDisabled = !on;};
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static bool Is_There_Search_Drives(void) {return(First != NULL);};
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static int Set_Search_Drives(char * pathlist);
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static void Add_Search_Drive(char *path);
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static void Clear_Search_Drives(void);
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static void Refresh_Search_Drives(void);
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static void Set_CD_Drive(int drive);
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static int Get_CD_Drive(void) {return(CurrentCDDrive);};
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static int Get_Last_CD_Drive(void) {return(LastCDDrive);};
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private:
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/*
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** Is multi-drive searching disabled for this file object?
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*/
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unsigned IsDisabled:1;
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/*
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** This is the control record for each of the drives specified in the search
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** path. There can be many such search paths available.
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*/
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typedef struct {
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void * Next; // Pointer to next search record.
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char const * Path; // Pointer to path string.
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} SearchDriveType;
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/*
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** This points to the first path record.
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*/
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static SearchDriveType * First;
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/*
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** This is a copy of the unparsed search path list
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*/
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static char RawPath[512];
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/*
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** The drive letter of the current cd drive
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*/
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static int CurrentCDDrive;
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/*
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** The drive letter of the last used CD drive
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*/
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static int LastCDDrive;
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};
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#endif
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