Function parse_options

cmdutils.c:117–186

}

void parse_options(int argc, char **argv, const OptionDef *options,
                   void (* parse_arg_function)(const char*))
{
    const char *opt, *arg;
    int optindex, handleoptions=1;
    const OptionDef *po;

    /* parse options */
    optindex = 1;
    while (optindex < argc) {
        opt = argv[optindex++];

        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
            int bool_val = 1;
            if (opt[1] == '-' && opt[2] == '\0') {
                handleoptions = 0;
                continue;
            }
            opt++;
            po= find_option(options, opt);
            if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
                /* handle 'no' bool option */
                po = find_option(options, opt + 2);
                if (!(po->name && (po->flags & OPT_BOOL)))
                    goto unknown_opt;
                bool_val = 0;
            }
            if (!po->name)
                po= find_option(options, "default");
            if (!po->name) {
unknown_opt:
                fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
                exit(1);
            }
            arg = NULL;
            if (po->flags & HAS_ARG) {
                arg = argv[optindex++];
                if (!arg) {
                    fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
                    exit(1);
                }
            }
            if (po->flags & OPT_STRING) {
                char *str;
                str = av_strdup(arg);
                *po->u.str_arg = str;
            } else if (po->flags & OPT_BOOL) {
                *po->u.int_arg = bool_val;
            } else if (po->flags & OPT_INT) {
                *po->u.int_arg = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
            } else if (po->flags & OPT_INT64) {
                *po->u.int64_arg = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
            } else if (po->flags & OPT_FLOAT) {
                *po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -1.0/0.0, 1.0/0.0);
            } else if (po->flags & OPT_FUNC2) {
                if (po->u.func2_arg(opt, arg) < 0) {
                    fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt);
                    exit(1);