glviewvol
annotate src/opt.cc @ 8:fb6d93471352
main thing done
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 30 Dec 2014 20:03:32 +0200 |
| parents | 32c4a7160350 |
| children | 773f89037a35 |
| rev | line source |
|---|---|
| nuclear@3 | 1 #include <stdio.h> |
| nuclear@3 | 2 #include <string.h> |
| nuclear@3 | 3 #include "opt.h" |
| nuclear@3 | 4 |
| nuclear@3 | 5 static struct { |
| nuclear@3 | 6 const char *name; |
| nuclear@3 | 7 RendererType rtype; |
| nuclear@3 | 8 } rend[] = { |
| nuclear@3 | 9 { "fast", REND_FAST }, |
| nuclear@3 | 10 { 0, REND_NONE } |
| nuclear@3 | 11 }; |
| nuclear@3 | 12 |
| nuclear@3 | 13 Options opt; |
| nuclear@3 | 14 |
| nuclear@3 | 15 static void init_opt() |
| nuclear@3 | 16 { |
| nuclear@3 | 17 opt.fname = 0; |
| nuclear@3 | 18 opt.rend_type = REND_FAST; |
| nuclear@6 | 19 opt.xsz = 800; |
| nuclear@6 | 20 opt.ysz = 800; |
| nuclear@3 | 21 } |
| nuclear@3 | 22 |
| nuclear@3 | 23 static RendererType renderer_type(const char *name) |
| nuclear@3 | 24 { |
| nuclear@3 | 25 for(int i=0; rend[i].name; i++) { |
| nuclear@3 | 26 if(strcmp(rend[i].name, name) == 0) { |
| nuclear@3 | 27 return rend[i].rtype; |
| nuclear@3 | 28 } |
| nuclear@3 | 29 } |
| nuclear@3 | 30 return REND_NONE; |
| nuclear@3 | 31 } |
| nuclear@3 | 32 |
| nuclear@3 | 33 int parse_args(int argc, char **argv) |
| nuclear@3 | 34 { |
| nuclear@3 | 35 init_opt(); |
| nuclear@3 | 36 |
| nuclear@3 | 37 for(int i=1; i<argc; i++) { |
| nuclear@3 | 38 if(argv[i][0] == '-') { |
| nuclear@3 | 39 if(argv[i][2] == 0) { |
| nuclear@3 | 40 switch(argv[i][1]) { |
| nuclear@6 | 41 case 's': |
| nuclear@6 | 42 if(sscanf(argv[++i], "%dx%d", &opt.xsz, &opt.ysz) != 2) { |
| nuclear@6 | 43 fprintf(stderr, "-s must be followed by the window size (WxH)\n"); |
| nuclear@6 | 44 return -1; |
| nuclear@6 | 45 } |
| nuclear@6 | 46 break; |
| nuclear@6 | 47 |
| nuclear@3 | 48 case 'r': |
| nuclear@3 | 49 if((opt.rend_type = renderer_type(argv[++i])) == REND_NONE) { |
| nuclear@3 | 50 if(strcmp(argv[i], "help") == 0) { |
| nuclear@3 | 51 printf("available renderers: "); |
| nuclear@3 | 52 for(int j=0; rend[j].name; j++) { |
| nuclear@3 | 53 printf("%s ", rend[j].name); |
| nuclear@3 | 54 } |
| nuclear@3 | 55 putchar('\n'); |
| nuclear@3 | 56 return -1; |
| nuclear@3 | 57 } |
| nuclear@3 | 58 fprintf(stderr, "unknown renderer type: %s (use -r help to show list of renderers)\n", argv[i]); |
| nuclear@3 | 59 return -1; |
| nuclear@3 | 60 } |
| nuclear@3 | 61 break; |
| nuclear@3 | 62 |
| nuclear@3 | 63 default: |
| nuclear@3 | 64 fprintf(stderr, "invalid option: %s\n", argv[i]); |
| nuclear@3 | 65 return -1; |
| nuclear@3 | 66 } |
| nuclear@3 | 67 } else { |
| nuclear@3 | 68 fprintf(stderr, "invalid option: %s\n", argv[i]); |
| nuclear@3 | 69 return -1; |
| nuclear@3 | 70 } |
| nuclear@3 | 71 } else { |
| nuclear@3 | 72 if(opt.fname) { |
| nuclear@3 | 73 fprintf(stderr, "unexpected argument: %s\n", argv[i]); |
| nuclear@3 | 74 return -1; |
| nuclear@3 | 75 } |
| nuclear@3 | 76 opt.fname = argv[i]; |
| nuclear@3 | 77 } |
| nuclear@3 | 78 } |
| nuclear@3 | 79 |
| nuclear@3 | 80 return 0; |
| nuclear@3 | 81 } |