opt: add opt_unregister.

[ccan] / ccan / opt / opt.c

diff --git a/ccan/opt/opt.c b/ccan/opt/opt.c
index 0514dc8702dfc8ef2327d892f7cbd7606dec2b06..d4601dfbb230a3076edfa64d8b5232996f4d59d2 100644 (file)
--- a/ccan/opt/opt.c
+++ b/ccan/opt/opt.c
@@ -176,6 +176,23 @@ void _opt_register(const char *names, enum opt_type type,
        add_opt(&opt);
 }
 
+bool opt_unregister(const char *names)
+{
+       int found = -1, i;
+
+       for (i = 0; i < opt_count; i++) {
+               if (opt_table[i].type == OPT_SUBTABLE)
+                       continue;
+               if (strcmp(opt_table[i].names, names) == 0)
+                       found = i;
+       }
+       if (found == -1)
+               return false;
+       opt_count--;
+       memmove(&opt_table[found], &opt_table[found+1], opt_count - found);
+       return true;
+}
+
 void opt_register_table(const struct opt_table entry[], const char *desc)
 {
        unsigned int i, start = opt_count;