mirror of
https://github.com/ZDoom/Raze.git
synced 2024-11-16 09:21:36 +00:00
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
/*
|
|
* file_lib.c
|
|
* File functions to emulate MACT
|
|
*
|
|
* by Jonathon Fowler
|
|
*
|
|
* Since we weren't given the source for MACT386.LIB so I've had to do some
|
|
* creative interpolation here.
|
|
*
|
|
*/
|
|
//-------------------------------------------------------------------------
|
|
/*
|
|
Duke Nukem Copyright (C) 1996, 2003 3D Realms Entertainment
|
|
|
|
This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
|
|
|
|
Duke Nukem 3D 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 2
|
|
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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
//-------------------------------------------------------------------------
|
|
|
|
#include <stdlib.h>
|
|
#ifndef _MSC_VER
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include "types.h"
|
|
#include "file_lib.h"
|
|
#include "util_lib.h"
|
|
#include "compat.h"
|
|
#include "cache1d.h"
|
|
|
|
#ifndef O_BINARY
|
|
#define O_BINARY 0
|
|
#endif
|
|
#ifndef O_TEXT
|
|
#define O_TEXT 0
|
|
#endif
|
|
#ifndef F_OK
|
|
#define F_OK 0
|
|
#endif
|
|
|
|
#define MaxFiles 20
|
|
static char *FileNames[MaxFiles];
|
|
|
|
int32 SafeOpen(const char *filename, int32 mode, int32 sharemode)
|
|
{
|
|
int32 h;
|
|
|
|
h = openfrompath(filename, mode, sharemode);
|
|
if (h < 0) Error("Error opening %s: %s", filename, strerror(errno));
|
|
|
|
if (h < MaxFiles) {
|
|
if (FileNames[h]) SafeFree(FileNames[h]);
|
|
FileNames[h] = (char*)SafeMalloc(strlen(filename)+1);
|
|
if (FileNames[h]) strcpy(FileNames[h], filename);
|
|
}
|
|
|
|
return h;
|
|
}
|
|
|
|
int32 SafeOpenRead(const char *filename, int32 filetype)
|
|
{
|
|
int32 h;
|
|
|
|
switch (filetype) {
|
|
case filetype_binary:
|
|
return SafeOpen(filename, O_RDONLY|O_BINARY, S_IREAD);
|
|
case filetype_text:
|
|
return SafeOpen(filename, O_RDONLY|O_TEXT, S_IREAD);
|
|
default:
|
|
Error("SafeOpenRead: Illegal filetype specified");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
void SafeClose ( int32 handle )
|
|
{
|
|
int r;
|
|
|
|
if (handle < 0) return;
|
|
if (close(handle) < 0) {
|
|
if (handle < MaxFiles)
|
|
Error("Unable to close file %s", FileNames[handle]);
|
|
else
|
|
Error("Unable to close file");
|
|
}
|
|
|
|
if (handle < MaxFiles && FileNames[handle]) {
|
|
SafeFree(FileNames[handle]);
|
|
FileNames[handle] = NULL;
|
|
}
|
|
}
|
|
|
|
boolean SafeFileExists(const char *filename)
|
|
{
|
|
if (!access(filename, F_OK)) return true;
|
|
return false;
|
|
}
|
|
|
|
int32 SafeFileLength ( int32 handle )
|
|
{
|
|
if (handle < 0) return -1;
|
|
return Bfilelength(handle);
|
|
}
|
|
|
|
void SafeRead(int32 handle, void *buffer, int32 count)
|
|
{
|
|
int32 b;
|
|
|
|
b = read(handle, buffer, count);
|
|
if (b != count) {
|
|
close(handle);
|
|
if (handle < MaxFiles)
|
|
Error("File read failure %s reading %d bytes from file %s.",
|
|
strerror(errno), count, FileNames[handle]);
|
|
else
|
|
Error("File read failure %s reading %d bytes.",
|
|
strerror(errno), count);
|
|
}
|
|
}
|
|
|
|
|