submodule-config.c: use repo_get_oid for reading .gitmodules

Since 76e9bdc437 (submodule: support reading .gitmodules when it's not in the working tree - 2018-10-25), every time you do git grep --recurse-submodules you are likely to see one warning line per submodule (unless all those submodules also have submodules). On a superproject with plenty of submodules (I've seen one with 67) this is really annoying. The warning was there because we could not resolve extended SHA-1 syntax on a submodule. We can now. Make use of the new API and get rid of the warning. It would be even better if config_with_options() supports multiple repositories too. But one step at a time. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Nguyễn Thái Ngọc Duy committed Apr 16, 2019 at 16:33 UTC d9b8b8f896f92639f06708dcd641c0706fcfd6a4
2 files changed +8 -18
submodule-config.c
+7 -13
@@ -625,23 +625,16 @@ static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void
625 const struct config_options opts = { 0 };
626 struct object_id oid;
627 char *file;
628 + char *oidstr = NULL;
629
630 file = repo_worktree_path(repo, GITMODULES_FILE);
631 if (file_exists(file)) {
632 config_source.file = file;
632 - } else if (repo->submodule_prefix) {
633 - /*
634 - * When get_oid and config_with_options, used below,
635 - * become able to work on a specific repository, this
636 - * warning branch can be removed.
637 - */
638 - warning("nested submodules without %s in the working tree are not supported yet",
639 - GITMODULES_FILE);
640 - goto out;
641 - } else if (get_oid(GITMODULES_INDEX, &oid) >= 0) {
642 - config_source.blob = GITMODULES_INDEX;
643 - } else if (get_oid(GITMODULES_HEAD, &oid) >= 0) {
644 - config_source.blob = GITMODULES_HEAD;
633 + } else if (repo_get_oid(repo, GITMODULES_INDEX, &oid) >= 0 ||
634 + repo_get_oid(repo, GITMODULES_HEAD, &oid) >= 0) {
635 + config_source.blob = oidstr = xstrdup(oid_to_hex(&oid));
636 + if (repo != the_repository)
637 + add_to_alternates_memory(repo->objects->odb->path);
638 } else {
639 goto out;
640 }
@@ -649,6 +642,7 @@ static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void
642 config_with_options(fn, data, &config_source, &opts);
643
644 out:
645 + free(oidstr);
646 free(file);
647 }
648 }
t/t7814-grep-recurse-submodules.sh
+1 -5
@@ -380,11 +380,7 @@ test_expect_success 'grep --recurse-submodules should pass the pattern type alon
380 fi
381 '
382
383 -# Recursing down into nested submodules which do not have .gitmodules in their
384 -# working tree does not work yet. This is because config_from_gitmodules()
385 -# uses get_oid() and the latter is still not able to get objects from an
386 -# arbitrary repository (the nested submodule, in this case).
387 -test_expect_failure 'grep --recurse-submodules with submodules without .gitmodules in the working tree' '
383 +test_expect_success 'grep --recurse-submodules with submodules without .gitmodules in the working tree' '
384 test_when_finished "git -C submodule checkout .gitmodules" &&
385 rm submodule/.gitmodules &&
386 git grep --recurse-submodules -e "(.|.)[\d]" >actual &&