int cmd_opt(char **arg)
{
const char *opt_text = get_arg(arg);
struct opdb_key key;
union opdb_value value;
if (opt_text) {
if (opdb_get(opt_text, &key, &value) < 0) {
printc_err("opt: no such option: %s\n",
opt_text);
return -1;
}
}
if (**arg) {
if (parse_option(key.type, &value, *arg) < 0) {
printc_err("opt: can't parse option: %s\n",
*arg);
return -1;
}
opdb_set(key.name, &value);
} else if (opt_text) {
display_option(NULL, &key, &value);
} else {
opdb_enum(display_option, NULL);
}
return 0;
}
void menu_update(int action) {
switch (action) { // the action depends on the button that has changed
case 0: m++;
break;
case 1: m--;
break;
case 2: if (m == 1) {
submenu = 1;
m = 0;
}
break;
case 3: if (submenu == 1) {
submenu = 0;
m = 0;
}
break;
}//switch
if (m < 0) m = 0;
if (m > 4) m = 4;
display_option(m, submenu);
}//menu_update
