packfile: introduce macro to iterate through packs

We have a bunch of different sites that want to iterate through all
packs of a given `struct packfile_store`. This pattern is somewhat
verbose and repetitive, which makes it somewhat cumbersome.

Introduce a new macro `repo_for_each_pack()` that removes some of the
boilerplate.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 7 insertions, 15 deletions

diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index fe987fbb8b..50618e1073 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -3831,12 +3831,10 @@ static int pack_mtime_cmp(const void *_a, const void *_b)
 
 static void read_packs_list_from_stdin(struct rev_info *revs)
 {
-	struct packfile_store *packs = the_repository->objects->packfiles;
 	struct strbuf buf = STRBUF_INIT;
 	struct string_list include_packs = STRING_LIST_INIT_DUP;
 	struct string_list exclude_packs = STRING_LIST_INIT_DUP;
 	struct string_list_item *item = NULL;
-
 	struct packed_git *p;
 
 	while (strbuf_getline(&buf, stdin) != EOF) {
@@ -3856,7 +3854,7 @@ static void read_packs_list_from_stdin(struct rev_info *revs)
 	string_list_sort(&exclude_packs);
 	string_list_remove_duplicates(&exclude_packs, 0);
 
-	for (p = packfile_store_get_all_packs(packs); p; p = p->next) {
+	repo_for_each_pack(the_repository, p) {
 		const char *pack_name = pack_basename(p);
 
 		if ((item = string_list_lookup(&include_packs, pack_name)))
@@ -4077,7 +4075,6 @@ static void enumerate_cruft_objects(void)
 
 static void enumerate_and_traverse_cruft_objects(struct string_list *fresh_packs)
 {
-	struct packfile_store *packs = the_repository->objects->packfiles;
 	struct packed_git *p;
 	struct rev_info revs;
 	int ret;
@@ -4107,7 +4104,7 @@ static void enumerate_and_traverse_cruft_objects(struct string_list *fresh_packs
 	 * Re-mark only the fresh packs as kept so that objects in
 	 * unknown packs do not halt the reachability traversal early.
 	 */
-	for (p = packfile_store_get_all_packs(packs); p; p = p->next)
+	repo_for_each_pack(the_repository, p)
 		p->pack_keep_in_core = 0;
 	mark_pack_kept_in_core(fresh_packs, 1);
 
@@ -4124,7 +4121,6 @@ static void enumerate_and_traverse_cruft_objects(struct string_list *fresh_packs
 
 static void read_cruft_objects(void)
 {
-	struct packfile_store *packs = the_repository->objects->packfiles;
 	struct strbuf buf = STRBUF_INIT;
 	struct string_list discard_packs = STRING_LIST_INIT_DUP;
 	struct string_list fresh_packs = STRING_LIST_INIT_DUP;
@@ -4145,7 +4141,7 @@ static void read_cruft_objects(void)
 	string_list_sort(&discard_packs);
 	string_list_sort(&fresh_packs);
 
-	for (p = packfile_store_get_all_packs(packs); p; p = p->next) {
+	repo_for_each_pack(the_repository, p) {
 		const char *pack_name = pack_basename(p);
 		struct string_list_item *item;
 
@@ -4440,13 +4436,12 @@ static int loosened_object_can_be_discarded(const struct object_id *oid,
 
 static void loosen_unused_packed_objects(void)
 {
-	struct packfile_store *packs = the_repository->objects->packfiles;
 	struct packed_git *p;
 	uint32_t i;
 	uint32_t loosened_objects_nr = 0;
 	struct object_id oid;
 
-	for (p = packfile_store_get_all_packs(packs); p; p = p->next) {
+	repo_for_each_pack(the_repository, p) {
 		if (!p->pack_local || p->pack_keep || p->pack_keep_in_core)
 			continue;
 
@@ -4747,13 +4742,12 @@ static void get_object_list(struct rev_info *revs, struct strvec *argv)
 
 static void add_extra_kept_packs(const struct string_list *names)
 {
-	struct packfile_store *packs = the_repository->objects->packfiles;
 	struct packed_git *p;
 
 	if (!names->nr)
 		return;
 
-	for (p = packfile_store_get_all_packs(packs); p; p = p->next) {
+	repo_for_each_pack(the_repository, p) {
 		const char *name = basename(p->pack_name);
 		int i;
 
@@ -5191,10 +5185,9 @@ int cmd_pack_objects(int argc,
 
 	add_extra_kept_packs(&keep_pack_list);
 	if (ignore_packed_keep_on_disk) {
-		struct packfile_store *packs = the_repository->objects->packfiles;
 		struct packed_git *p;
 
-		for (p = packfile_store_get_all_packs(packs); p; p = p->next)
+		repo_for_each_pack(the_repository, p)
 			if (p->pack_local && p->pack_keep)
 				break;
 		if (!p) /* no keep-able packs found */
@@ -5206,10 +5199,9 @@ int cmd_pack_objects(int argc,
 		 * want to unset "local" based on looking at packs, as
 		 * it also covers non-local objects
 		 */
-		struct packfile_store *packs = the_repository->objects->packfiles;
 		struct packed_git *p;
 
-		for (p = packfile_store_get_all_packs(packs); p; p = p->next) {
+		repo_for_each_pack(the_repository, p) {
 			if (!p->pack_local) {
 				have_non_local_packs = 1;
 				break;