155 lines
6.7 KiB
C++
155 lines
6.7 KiB
C++
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/*
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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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/***************************************************************************
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** 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 **
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***************************************************************************
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* *
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* Project Name : Library - File functions. *
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* *
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* File Name : FILECHNG.CPP *
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* *
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* Programmer : Scott K. Bowen *
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* *
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* Start Date : September 13, 1993 *
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* *
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* Last Update : September 13, 1993 [SKB] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* Delete_File -- Deletes the file from the disk. *
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* Create_File -- Creates an empty file on disk. *
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* Change_File_Size -- Change the size of a writting file. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef WWSTD_H
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#include "wwstd.h"
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#endif
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#ifndef _FILE_H
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#include "_file.h"
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#endif
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#ifndef WWMEM_H
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#include <wwmem.h>
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#endif
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#include <io.h>
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/*=========================================================================*/
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/* The following PRIVATE functions are in this file: */
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/*=========================================================================*/
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/*= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =*/
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/***************************************************************************
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* CREATE_FILE -- Creates an empty file on disk. *
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* *
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* *
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* *
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* INPUT: *
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* *
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* OUTPUT: *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 05/24/1992 JLB : Created. *
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*=========================================================================*/
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WORD cdecl Create_File(BYTE const *file_name)
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{
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WORD fd;
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if (!file_name) return(FALSE);
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fd = Open_File(file_name, WRITE);
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if (fd != ERROR) {
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Close_File(fd);
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return(TRUE);
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}
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return(FALSE);
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}
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/***************************************************************************
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* DELETE_FILE -- Deletes the file from the disk. *
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* *
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* *
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* *
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* INPUT: *
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* *
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* OUTPUT: *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 05/24/1992 JLB : Created. *
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*=========================================================================*/
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WORD cdecl Delete_File(BYTE const *file_name)
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{
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WORD index;
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FileDataType *filedata; // Pointer to the current FileData.
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FileDataType hold; // Hold buffer for record (DO NOT ACCESS DIRECTLY)
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if (!file_name) return(FALSE);
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CallingDOSInt++;
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ibm_setdisk(*StartPath - 'A');
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index = Find_File_Index(file_name);
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filedata = &FileDataPtr[index];
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if (index != ERROR && filedata->Ptr) {
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Mem_Free(FileCacheHeap, filedata->Ptr);
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filedata->Ptr = NULL;
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}
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index = !FILEDELETE(file_name);
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CallingDOSInt--;
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return(index);
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}
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/***************************************************************************
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* CHANGE_FILE_SIZE -- Change the size of a writting file. *
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* *
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* INPUT: WORD handle - handle of file. *
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* ULONG new_size - size of new handle. *
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* *
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* OUTPUT: *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 09/13/1993 SKB : Created. *
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*=========================================================================*/
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BOOL cdecl Change_File_Size(WORD handle, ULONG new_size)
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{
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WORD entry;
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if (Is_Handle_Valid(handle, WRITING_NON_HANDLE, NULL)) {
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entry = Get_DOS_Handle(handle);
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if (entry != ERROR) {
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return(chsize(entry, new_size) != ERROR);
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}
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}
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return(FALSE);
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}
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