192   int argn;  in parse_switches()  local
205   for (argn = 1; argn < argc; argn++) {  in parse_switches()
206     arg = argv[argn];  in parse_switches()
209       if (argn <= last_file_arg_seen) {  in parse_switches()
226       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
228       if (sscanf(argv[argn], "%d", &val) != 1)  in parse_switches()
235       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
237       if (keymatch(argv[argn], "int", 1)) {  in parse_switches()
239       } else if (keymatch(argv[argn], "fast", 2)) {  in parse_switches()
241       } else if (keymatch(argv[argn], "float", 2)) {  in parse_switches()
248       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
250       if (keymatch(argv[argn], "fs", 2)) {  in parse_switches()
252       } else if (keymatch(argv[argn], "none", 2)) {  in parse_switches()
254       } else if (keymatch(argv[argn], "ordered", 2)) {  in parse_switches()
306       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
312         if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {  in parse_switches()
313           fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);  in parse_switches()
329       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
331       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)  in parse_switches()
351       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
353       outfilename = argv[argn]; /* save it away for later use */  in parse_switches()
375       if (++argn >= argc)       /* advance to next argument */  in parse_switches()
377       if (sscanf(argv[argn], "%d/%d",  in parse_switches()
382       if (++argn >= argc)  in parse_switches()
384       if (sscanf(argv[argn], "%u,%u", &skip_start, &skip_end) != 2 ||  in parse_switches()
391       if (++argn >= argc)  in parse_switches()
393       if (sscanf(argv[argn], "%u%c%u+%u+%u", &crop_width, &c, &crop_height,  in parse_switches()
408   return argn;                  /* return index of next arg (file name) */  in parse_switches()