CnC_Red_Alert/WWFLAT32/FILE/FILEIO.CPP

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/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/***************************************************************************
** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
***************************************************************************
* *
* Project Name : Westwood Library *
* *
* File Name : FILEIO.C *
* *
* Programmer : Joe L. Bostic *
* *
* Start Date : August 21, 1991 *
* *
* Last Update : September 13, 1993 [SKB] *
* *
*-------------------------------------------------------------------------*
* Functions: *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#ifndef WWSTD_H
#include "wwstd.h"
#endif
#ifndef _FILE_H
#include "_file.h"
#endif
#include <dos.h>
#include <direct.h>
#include <io.h>
/*=========================================================================*/
/* The following PRIVATE functions are in this file: */
/*=========================================================================*/
/*= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =*/
WORD ibm_getdisk(VOID)
{
unsigned disk;
CallingDOSInt++;
// disk = getdisk();
_dos_getdrive ( & disk ) ;
CallingDOSInt--;
return(disk-1);
}
WORD ibm_setdisk(WORD drive)
{
// WORD disk;
unsigned disk ;
CallingDOSInt++;
// disk = setdisk(drive);
_dos_setdrive ( drive+1 , & disk ) ;
CallingDOSInt--;
return(disk);
}
WORD ibm_close(WORD handle)
{
WORD success;
CallingDOSInt++;
success = close(handle);
CallingDOSInt--;
return(success);
}
WORD ibm_unlink(BYTE const *name)
{
WORD success;
CallingDOSInt++;
success = unlink(name);
CallingDOSInt--;
return(success);
}
LONG ibm_lseek(WORD handle, LONG offset, WORD where)
{
LONG new_offset;
CallingDOSInt++;
new_offset = lseek(handle, offset, where);
CallingDOSInt--;
return(new_offset);
}
UWORD ibm_read(WORD handle, VOID *ptr, UWORD bytes)
{
UWORD bytes_read;
CallingDOSInt++;
bytes_read = read(handle, ptr, bytes);
CallingDOSInt--;
return(bytes_read);
}
UWORD ibm_write(WORD handle, VOID *ptr, UWORD bytes)
{
UWORD bytes_written;
CallingDOSInt++;
bytes_written = write(handle, ptr, bytes);
CallingDOSInt--;
return(bytes_written);
}
WORD ibm_open(BYTE const *name, UWORD mode, WORD attrib)
{
WORD handle;
CallingDOSInt++;
handle = open(name, mode, attrib);
CallingDOSInt--;
return(handle);
}
WORD ibm_chdir(BYTE const *path)
{
WORD retval;
CallingDOSInt++;
retval = chdir(path);
CallingDOSInt--;
return(retval);
}