file.c

   1 /*
   2   Pacman Arena
   3   Copyright (C) 2003 Nuno Subtil
   4
   5   This program is free software; you can redistribute it and/or
   6   modify it under the terms of the GNU General Public License
   7   as published by the Free Software Foundation; either version 2
   8   of the License, or (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; if not, write to the Free Software
  17   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 static const char cvsid[] =
  21   "$Id: file.c,v 1.5 2003/11/23 00:06:39 nsubtil Exp $";
  22
  23 #include <SDL.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27
  28 #include "include/file.h"
  29
  30 FILE *file_open(char *file)
  31 {
  32         char fname[FILE_NAME_LEN];
  33
  34         if(strlen(file) + strlen(FILE_BASE_PATH) + 2 > FILE_NAME_LEN)
  35         {
  36                 printf("file_open: %s: that's too much for me\n", file);
  37                 exit(1);
  38         }
  39
  40         sprintf(fname, "%s/%s", FILE_BASE_PATH, file);
  41         return fopen(fname, "rb");
  42 }
  43
  44 /*
  45   all data on files is in little-endian format
  46 */
  47 void file_read_values32(void *ret, int n, FILE *fp)
  48 {
  49 #ifdef SDL_LIL_ENDIAN
  50         fread(ret, 4, n, fp);
  51 #else
  52         int c, *i;
  53
  54         fread(ret, 4, n, fp);
  55         i = (int *)ret;
  56
  57         for(c = 0; c < n; c++)
  58                 i[c] = SDL_Swap32(i[c]);
  59 #endif /* SDL_LIL_ENDIAN */
  60 }
  61
  62 void file_write_values32(void *src, int n, FILE *fp)
  63 {
  64 #ifdef SDL_LIL_ENDIAN
  65         fwrite(src, 4, n, fp);
  66 #else
  67         int c, tmp, *i;
  68
  69         i = (int *)src;
  70         for(c = 0; c < n; c++)
  71         {
  72                 tmp = SDL_Swap32(i[c]);
  73                 fwrite(&tmp, 4, 1, fp);
  74         }
  75 #endif /* SDL_LIL_ENDIAN */
  76 }
  77
  78 char *file_make_fname(char *file)
  79 {
  80         static char fname[FILE_NAME_LEN];
  81
  82         if(strlen(FILE_BASE_PATH) + strlen(file) + 2 > FILE_NAME_LEN)
  83         {
  84                 printf("file_make_fname: too much!\n");
  85                 exit(1);
  86         }
  87
  88         sprintf(fname, "%s/%s", FILE_BASE_PATH, file);
  89         return fname;
  90 }