refs: wrap top-level ref_dirs in ref_entries

Make it turtles all the way down. This affects the loose and packed fields of ref_cache instances. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed Apr 27, 2012 at 00:27 UTC d12229f532dc88024c249fb3e2ca0ac921cc14a9
1 file changed +19 -18
refs.c
+19 -18
@@ -607,26 +607,26 @@ static int is_refname_available(const char *refname, const char *oldrefname,
607 */
608 static struct ref_cache {
609 struct ref_cache *next;
610 - char did_loose;
611 - char did_packed;
612 - struct ref_dir loose;
613 - struct ref_dir packed;
610 + struct ref_entry *loose;
611 + struct ref_entry *packed;
612 /* The submodule name, or "" for the main repo. */
613 char name[FLEX_ARRAY];
614 } *ref_cache;
615
616 static void clear_packed_ref_cache(struct ref_cache *refs)
617 {
620 - if (refs->did_packed)
621 - clear_ref_dir(&refs->packed);
622 - refs->did_packed = 0;
618 + if (refs->packed) {
619 + free_ref_entry(refs->packed);
620 + refs->packed = NULL;
621 + }
622 }
623
624 static void clear_loose_ref_cache(struct ref_cache *refs)
625 {
627 - if (refs->did_loose)
628 - clear_ref_dir(&refs->loose);
629 - refs->did_loose = 0;
626 + if (refs->loose) {
627 + free_ref_entry(refs->loose);
628 + refs->loose = NULL;
629 + }
630 }
631
632 static struct ref_cache *create_ref_cache(const char *submodule)
@@ -740,22 +740,22 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir)
740
741 static struct ref_dir *get_packed_refs(struct ref_cache *refs)
742 {
743 - if (!refs->did_packed) {
743 + if (!refs->packed) {
744 const char *packed_refs_file;
745 FILE *f;
746
747 + refs->packed = create_dir_entry("");
748 if (*refs->name)
749 packed_refs_file = git_path_submodule(refs->name, "packed-refs");
750 else
751 packed_refs_file = git_path("packed-refs");
752 f = fopen(packed_refs_file, "r");
753 if (f) {
753 - read_packed_refs(f, &refs->packed);
754 + read_packed_refs(f, &refs->packed->u.subdir);
755 fclose(f);
756 }
756 - refs->did_packed = 1;
757 }
758 - return &refs->packed;
758 + return &refs->packed->u.subdir;
759 }
760
761 void add_packed_ref(const char *refname, const unsigned char *sha1)
@@ -833,12 +833,13 @@ static void get_ref_dir(struct ref_cache *refs, const char *dirname,
833
834 static struct ref_dir *get_loose_refs(struct ref_cache *refs)
835 {
836 - if (!refs->did_loose) {
836 + if (!refs->loose) {
837 + refs->loose = create_dir_entry("");
838 get_ref_dir(refs, "refs/",
838 - &search_for_subdir(&refs->loose, "refs/", 1)->u.subdir);
839 - refs->did_loose = 1;
839 + &search_for_subdir(&refs->loose->u.subdir,
840 + "refs/", 1)->u.subdir);
841 }
841 - return &refs->loose;
842 + return &refs->loose->u.subdir;
843 }
844
845 /* We allow "recursive" symbolic refs. Only within reason, though */