1 files changed, 19 insertions, 0 deletions
diff --git a/table.c b/table.c
index c69bc9c..76c31b5 100644
--- a/table.c
+++ b/table.c
@@ -179,3 +179,22 @@ void clear_table(struct table *tbl) {
 size_t get_table_offset(struct table tbl, struct string name, char *exists) {
 	return search(tbl, name, exists);
 }
+
+void * get_table_prefix(struct table tbl, struct string name) {
+	char exists;
+	size_t index = search(tbl, name, &exists);
+	if (exists)
+		return tbl.array[index].ptr;
+
+	if (index == 0)
+		return 0;
+
+	size_t len = tbl.array[index - 1].name.len;
+	if (len > name.len)
+		return 0;
+
+	if (memcmp(tbl.array[index - 1].name.data, name.data, len) != 0)
+		return 0;
+
+	return tbl.array[index - 1].ptr;
+}