X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/agedu/blobdiff_plain/352f37e2de014cc666d8323167aa887ddf529cdc..256c29a27ba79677a78bc676a3cc73ee1aad2d68:/trie.h

diff --git a/trie.h b/trie.h
index 40f6f75..ef52a08 100644
--- a/trie.h
+++ b/trie.h
@@ -107,3 +107,19 @@ void triewalk_free(triewalk *tw);
  */
 void trie_set_index_offset(void *t, off_t ptr);
 off_t trie_get_index_offset(const void *t);
+
+/* ----------------------------------------------------------------------
+ * Utility functions not directly involved with the trie.
+ */
+
+/*
+ * Given a pathname in a buffer, adjust the pathname in place so
+ * that it points at a string which, when passed to trie_before,
+ * will reliably return the index of the thing that comes after
+ * that pathname and all its descendants. Usually this is done by
+ * suffixing ^A (since foo^A is guaranteeably the first thing that
+ * sorts after foo and foo/stuff); however, if the pathname
+ * actually ends in a path separator (e.g. if it's just "/"), that
+ * must be stripped off first.
+ */
+void make_successor(char *pathbuf);