git.mutantstargoat.com Git - vrfileman/blob - src/opt.cc

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <optcfg.h>
   5 #include "opt.h"
   6
   7 Options opt;
   8
   9 enum {
  10         OPT_SIZE,
  11         OPT_VR,
  12         OPT_SRGB,
  13         OPT_FULLSCREEN,
  14         OPT_WINDOWED,
  15         OPT_HELP
  16 };
  17
  18 static optcfg_option options[] = {
  19         // short, long, id, desc
  20         {'s', "size", OPT_SIZE, "window size (WxH)"},
  21         {0, "vr", OPT_VR, "enable VR mode"},
  22         {0, "srgb", OPT_SRGB, "use linear color space"},
  23         {'f', "fullscreen", OPT_FULLSCREEN, "run in fullscreen mode"},
  24         {'w', "windowed", OPT_WINDOWED, "run in windowed mode"},
  25         {'h', "help", OPT_HELP, "print usage and exit"},
  26         OPTCFG_OPTIONS_END
  27 };
  28
  29 static int opt_handler(optcfg *oc, int opt, void *cls);
  30
  31 bool init_options(int argc, char **argv, const char *cfgfile)
  32 {
  33         // default options
  34         memset(&opt, 0, sizeof opt);
  35         opt.width = 1280;
  36         opt.height = 800;
  37         opt.srgb = true;
  38
  39         optcfg *oc = optcfg_init(options);
  40         optcfg_set_opt_callback(oc, opt_handler, 0);
  41
  42         if(cfgfile && optcfg_parse_config_file(oc, cfgfile) == -1) {
  43                 optcfg_destroy(oc);
  44                 return false;
  45         }
  46
  47         if(argv && optcfg_parse_args(oc, argc, argv) == -1) {
  48                 fprintf(stderr, "invalid option\n");
  49                 optcfg_destroy(oc);
  50                 return false;
  51         }
  52
  53         optcfg_destroy(oc);
  54         return true;
  55 }
  56
  57 static bool is_enabled(optcfg *oc)
  58 {
  59         int res;
  60         optcfg_enabled_value(oc, &res);
  61         return res != 0;
  62 }
  63
  64 static int opt_handler(optcfg *oc, int optid, void *cls)
  65 {
  66         switch(optid) {
  67         case OPT_SIZE:
  68                 {
  69                         char *valstr = optcfg_next_value(oc);
  70                         if(!valstr || sscanf(valstr, "%dx%d", &opt.width, &opt.height) != 2) {
  71                                 fprintf(stderr, "size must be in the form: WIDTHxHEIGHT\n");
  72                                 return -1;
  73                         }
  74                 }
  75                 break;
  76
  77         case OPT_VR:
  78                 opt.vr = is_enabled(oc);
  79                 break;
  80
  81         case OPT_SRGB:
  82                 opt.srgb = is_enabled(oc);
  83                 break;
  84
  85         case OPT_FULLSCREEN:
  86                 opt.fullscreen = is_enabled(oc);
  87                 break;
  88
  89         case OPT_WINDOWED:
  90                 opt.fullscreen = !is_enabled(oc);
  91                 break;
  92
  93         case OPT_HELP:
  94                 printf("Usage: vrfileman [options]\nOptions:\n");
  95                 optcfg_print_options(oc);
  96                 exit(0);
  97         }
  98         return true;
  99 }