parse: make suggestions for unknown options
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/init.c b/init.c
index 4f66759..9fbc477 100644
--- a/init.c
+++ b/init.c
@@ -1875,6 +1875,30 @@
fio_client_add_cmd_option(client, opt);
}
+static void show_closest_option(const char *name)
+{
+ int best_option, best_distance;
+ int i, distance;
+
+ while (*name == '-')
+ name++;
+
+ best_option = -1;
+ best_distance = INT_MAX;
+ i = 0;
+ while (l_opts[i].name) {
+ distance = string_distance(name, l_opts[i].name);
+ if (distance < best_distance) {
+ best_distance = distance;
+ best_option = i;
+ }
+ i++;
+ }
+
+ if (best_option != -1)
+ log_err("Did you mean %s?\n", l_opts[best_option].name);
+}
+
int parse_cmd_line(int argc, char *argv[], int client_type)
{
struct thread_data *td = NULL;
@@ -2237,6 +2261,7 @@
case '?':
log_err("%s: unrecognized option '%s'\n", argv[0],
argv[optind - 1]);
+ show_closest_option(argv[optind - 1]);
default:
do_exit++;
exit_val = 1;