Remove unused object-ref code

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile

@@ -312,7 +312,7 @@ LIB_OBJS = \
 	patch-ids.o \
 	object.o pack-check.o pack-write.o patch-delta.o path.o pkt-line.o \
 	sideband.o reachable.o reflog-walk.o \
-	quote.o read-cache.o refs.o run-command.o dir.o object-refs.o \
+	quote.o read-cache.o refs.o run-command.o dir.o \
 	server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
 	tag.o tree.o usage.o config.o environment.o ctype.o copy.o \
 	revision.o pager.o tree-walk.o xdiff-interface.o \

builtin-fetch-pack.c

@@ -385,7 +385,6 @@ static int everything_local(struct ref **refs, int nr_match, char **match)
 	int retval;
 	unsigned long cutoff = 0;
 
-	track_object_refs = 0;
 	save_commit_buffer = 0;
 
 	for (ref = *refs; ref; ref = ref->next) {

builtin-pack-objects.c

@@ -2009,7 +2009,6 @@ static void get_object_list(int ac, const char **av)
 
 	init_revisions(&revs, NULL);
 	save_commit_buffer = 0;
-	track_object_refs = 0;
 	setup_revisions(ac, av, &revs, NULL);
 
 	while (fgets(line, sizeof(line), stdin) != NULL) {

builtin-rev-list.c

@@ -605,7 +605,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 		usage(rev_list_usage);
 
 	save_commit_buffer = revs.verbose_header || revs.grep_filter;
-	track_object_refs = 0;
 	if (bisect_list)
 		revs.limited = 1;
 

commit.c

@@ -290,17 +290,6 @@ int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
 	}
 	item->date = parse_commit_date(bufptr, tail);
 
-	if (track_object_refs) {
-		unsigned i = 0;
-		struct commit_list *p;
-		struct object_refs *refs = alloc_object_refs(n_refs);
-		if (item->tree)
-			refs->ref[i++] = &item->tree->object;
-		for (p = item->parents; p; p = p->next)
-			refs->ref[i++] = &p->item->object;
-		set_object_refs(&item->object, refs);
-	}
-
 	return 0;
 }
 

object.h

@@ -35,14 +35,11 @@ struct object {
 	unsigned char sha1[20];
 };
 
-extern int track_object_refs;
-
 extern const char *typename(unsigned int type);
 extern int type_from_string(const char *str);
 
 extern unsigned int get_max_object_index(void);
 extern struct object *get_indexed_object(unsigned int);
-extern struct object_refs *lookup_object_refs(struct object *);
 
 /** Internal only **/
 struct object *lookup_object(const unsigned char *sha1);
@@ -61,11 +58,6 @@ struct object *parse_object_buffer(const unsigned char *sha1, enum object_type t
 /** Returns the object, with potentially excess memory allocated. **/
 struct object *lookup_unknown_object(const unsigned  char *sha1);
 
-struct object_refs *alloc_object_refs(unsigned count);
-void set_object_refs(struct object *obj, struct object_refs *refs);
-
-void mark_reachable(struct object *obj, unsigned int mask);
-
 struct object_list *object_list_insert(struct object *item,
 				       struct object_list **list_p);
 

tag.c

@@ -84,12 +84,6 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
 		item->tagged = NULL;
 	}
 
-	if (item->tagged && track_object_refs) {
-		struct object_refs *refs = alloc_object_refs(1);
-		refs->ref[0] = item->tagged;
-		set_object_refs(&item->object, refs);
-	}
-
 	return 0;
 }
 

tree.c

@@ -202,52 +202,6 @@ struct tree *lookup_tree(const unsigned char *sha1)
 	return (struct tree *) obj;
 }
 
-/*
- * NOTE! Tree refs to external git repositories
- * (ie gitlinks) do not count as real references.
- *
- * You don't have to have those repositories
- * available at all, much less have the objects
- * accessible from the current repository.
- */
-static void track_tree_refs(struct tree *item)
-{
-	int n_refs = 0, i;
-	struct object_refs *refs;
-	struct tree_desc desc;
-	struct name_entry entry;
-
-	/* Count how many entries there are.. */
-	init_tree_desc(&desc, item->buffer, item->size);
-	while (tree_entry(&desc, &entry)) {
-		if (S_ISGITLINK(entry.mode))
-			continue;
-		n_refs++;
-	}
-
-	/* Allocate object refs and walk it again.. */
-	i = 0;
-	refs = alloc_object_refs(n_refs);
-	init_tree_desc(&desc, item->buffer, item->size);
-	while (tree_entry(&desc, &entry)) {
-		struct object *obj;
-
-		if (S_ISGITLINK(entry.mode))
-			continue;
-		if (S_ISDIR(entry.mode))
-			obj = &lookup_tree(entry.sha1)->object;
-		else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode))
-			obj = &lookup_blob(entry.sha1)->object;
-		else {
-			warning("in tree %s: entry %s has bad mode %.6o\n",
-			     sha1_to_hex(item->object.sha1), entry.path, entry.mode);
-			obj = lookup_unknown_object(entry.sha1);
-		}
-		refs->ref[i++] = obj;
-	}
-	set_object_refs(&item->object, refs);
-}
-
 int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
 {
 	if (item->object.parsed)
@@ -256,8 +210,6 @@ int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
 	item->buffer = buffer;
 	item->size = size;
 
-	if (track_object_refs)
-		track_tree_refs(item);
 	return 0;
 }
 

upload-pack.c

@@ -392,7 +392,6 @@ static int get_common_commits(void)
 	char hex[41], last_hex[41];
 	int len;
 
-	track_object_refs = 0;
 	save_commit_buffer = 0;
 
 	for(;;) {

walker.c

@@ -256,7 +256,6 @@ int walker_fetch(struct walker *walker, int targets, char **target,
 	int i;
 
 	save_commit_buffer = 0;
-	track_object_refs = 0;
 
 	for (i = 0; i < targets; i++) {
 		if (!write_ref || !write_ref[i])