src: provide suggestion for misspelled object name

Use this from the lookup path, to check for misspellings:

 # nft add table filter
 # nft add chain filtre test
 Error: No such file or directory; did you mean table ‘filter’ in family ip?
 add chain filtre test
           ^^^^^^

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/misspell.h b/include/misspell.h
new file mode 100644
index 00000000..ba01e741
--- /dev/null
+++ b/include/misspell.h
@@ -0,0 +1,13 @@
+#ifndef _MISSPELL_H_
+#define _MISSPELL_H_
+
+struct string_misspell_state {
+	unsigned int	min_distance;
+	void		*obj;
+};
+
+void string_misspell_init(struct string_misspell_state *st);
+int string_misspell_update(const char *a, const char *b,
+			   void *obj, struct string_misspell_state *st);
+
+#endif