- while((c = getopt(argc, argv, "F:v:f:W:")) != EOF) {
- switch (c) {
- case 'F':
- setvar_s(V[FS], optarg);
- break;
- case 'v':
- if (! is_assignment(optarg))
- show_usage();
- break;
- case 'f':
- from_file = TRUE;
- F = afopen(programname = optarg, "r");
- s = NULL;
- /* one byte is reserved for some trick in next_token */
- for (i=j=1; j>0; i+=j) {
- s = (char *)xrealloc(s, i+4096);
- j = fread(s+i, 1, 4094, F);
- }
- s[i] = '\0';
- fclose(F);
- parse_program(s+1);
- free(s);
- break;
- case 'W':
- error_msg("Warning: unrecognized option '-W %s' ignored\n", optarg);
- break;
-
- default:
- show_usage();
+ opt = getopt32(argc, argv, "F:v:f:W:", &opt_F, &opt_v, &programname, &opt_W);
+ if (opt & 0x1) setvar_s(V[FS], opt_F); // -F
+ if (opt & 0x2) if (!is_assignment(opt_v)) bb_show_usage(); // -v
+ if (opt & 0x4) { // -f
+ from_file = TRUE;
+ F = afopen(programname, "r");
+ s = NULL;
+ /* one byte is reserved for some trick in next_token */
+ if (fseek(F, 0, SEEK_END) == 0) {
+ flen = ftell(F);
+ s = (char *)xmalloc(flen+4);
+ fseek(F, 0, SEEK_SET);
+ i = 1 + fread(s+1, 1, flen, F);
+ } else {
+ for (i=j=1; j>0; i+=j) {
+ s = (char *)xrealloc(s, i+4096);
+ j = fread(s+i, 1, 4094, F);
+ }