typedef struct indexbuild indexbuild;
indexbuild *indexbuild_new(void *t, off_t startoff, int nodecount);
void indexbuild_add(indexbuild *ib, const struct trie_file *tf);
+void indexbuild_tag(indexbuild *ib);
off_t indexbuild_realsize(indexbuild *ib);
void indexbuild_free(indexbuild *ib);