git.mutantstargoat.com Git - retrobench/blob - src/dos/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "rbench.h"
   4
   5 static int parse_args(int argc, char **argv);
   6
   7 int main(int argc, char **argv)
   8 {
   9         read_config("rbench.cfg");
  10
  11         if(parse_args(argc, argv) == -1) {
  12                 return 1;
  13         }
  14
  15         printf("foo %dx%d %dbpp\n", opt.width, opt.height, opt.bpp);
  16
  17         return 0;
  18 }
  19
  20
  21 static const char *usage_str =
  22         "Usage: %s [options]\n"
  23         "Options:\n"
  24         "  -s <WxH>: resolution\n"
  25         "  -b <bpp>: color depth\n"
  26         "  -h: print usage and exit\n";
  27
  28 static int parse_args(int argc, char **argv)
  29 {
  30         int i;
  31
  32         for(i=1; i<argc; i++) {
  33                 if(argv[i][0] == '-') {
  34                         if(argv[i][2]) {
  35                                 goto inval_arg;
  36                         }
  37                         switch(argv[i][1]) {
  38                         case 's':
  39                                 if(!argv[++i] || sscanf(argv[i], "%dx%d", &opt.width, &opt.height) != 2) {
  40                                         fprintf(stderr, "-s must be followed by WxH\n");
  41                                         return -1;
  42                                 }
  43                                 break;
  44
  45                         case 'b':
  46                                 if(!argv[++i] || !(opt.bpp = atoi(argv[i]))) {
  47                                         fprintf(stderr, "-b must be followed by the color depth\n");
  48                                         return -1;
  49                                 }
  50                                 break;
  51
  52                         case 'h':
  53                                 printf(usage_str, argv[0]);
  54                                 exit(0);
  55
  56                         default:
  57                                 goto inval_arg;
  58                         }
  59                 } else {
  60 inval_arg:      fprintf(stderr, "invalid argument: %s\n", argv[i]);
  61                         return -1;
  62                 }
  63         }
  64         return 0;
  65 }
  66