git.mutantstargoat.com Git - demo_prior/blob - src/opt.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include "opt.h"
   5 #include "treestore.h"
   6
   7 static void print_usage(const char *argv0);
   8
   9 struct options opt = {
  10         1280, 800,
  11         1,                      /* fullscreen */
  12         1,                      /* music */
  13         1,                      /* sRGB */
  14         1,                      /* anti-aliasing */
  15         1                       /* vsync */
  16 };
  17
  18 int parse_args(int argc, char **argv)
  19 {
  20         int i;
  21
  22         for(i=1; i<argc; i++) {
  23                 if(strcmp(argv[i], "-s") == 0 || strcmp(argv[i], "-size") == 0) {
  24                         if(sscanf(argv[++i], "%dx%d", &opt.width, &opt.height) != 2) {
  25                                 fprintf(stderr, "%s must be followed by <width>x<height>\n", argv[-1]);
  26                                 return -1;
  27                         }
  28                 } else if(strcmp(argv[i], "-fs") == 0) {
  29                         opt.fullscr = 1;
  30                 } else if(strcmp(argv[i], "-win") == 0) {
  31                         opt.fullscr = 0;
  32                 } else if(strcmp(argv[i], "-srgb") == 0) {
  33                         opt.srgb = 1;
  34                 } else if(strcmp(argv[i], "-nosrgb") == 0) {
  35                         opt.srgb = 0;
  36                 } else if(strcmp(argv[i], "-aa") == 0) {
  37                         opt.msaa = 1;
  38                 } else if(strcmp(argv[i], "-noaa") == 0) {
  39                         opt.msaa = 0;
  40                 } else if(strcmp(argv[i], "-music") == 0) {
  41                         opt.music = 1;
  42                 } else if(strcmp(argv[i], "-nomusic") == 0) {
  43                         opt.music = 0;
  44                 } else if(strcmp(argv[i], "-vsync") == 0) {
  45                         opt.vsync = 1;
  46                 } else if(strcmp(argv[i], "-novsync") == 0) {
  47                         opt.vsync = 0;
  48                 } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-help") == 0) {
  49                         print_usage(argv[0]);
  50                         exit(0);
  51                 } else {
  52                         fprintf(stderr, "invalid argument: %s\n", argv[i]);
  53                         print_usage(argv[0]);
  54                         return -1;
  55                 }
  56         }
  57         return 0;
  58 }
  59
  60 static void print_usage(const char *argv0)
  61 {
  62         printf("Usage: %s [options]\n", argv0);
  63         printf("  -fs: fullscr\n");
  64         printf("  -win: windowed\n");
  65         printf("  -s,-size <WxH>: windowed resolution\n");
  66         printf("  -srgb/-nosrgb: enable/disable sRGB framebuffer\n");
  67         printf("  -aa/-noaa: enable/disable multisample anti-aliasing\n");
  68         printf("  -music/-nomusic: enable/disable music playback\n");
  69         printf("  -vsync/-novsync: enable/disable vertical sync\n");
  70         printf("  -h,-help: print usage and exit\n");
  71 }
  72
  73 int read_cfg(const char *fname)
  74 {
  75         struct ts_node *ts;
  76
  77         if(!(ts = ts_load(fname))) {
  78                 return -1;
  79         }
  80         opt.width = ts_lookup_int(ts, "demo.width", opt.width);
  81         opt.height = ts_lookup_int(ts, "demo.height", opt.height);
  82         opt.fullscr = ts_lookup_int(ts, "demo.fullscreen", opt.fullscr);
  83         opt.music = ts_lookup_int(ts, "demo.music", opt.music);
  84         opt.srgb = ts_lookup_int(ts, "demo.srgb", opt.srgb);
  85         opt.msaa = ts_lookup_int(ts, "demo.aa", opt.msaa);
  86         opt.vsync = ts_lookup_int(ts, "demo.vsync", opt.vsync);
  87
  88         ts_free_tree(ts);
  89         return 0;
  90 }