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odb: get rid of the_repository when handling submodule sources

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The "--recursive" flag for git-grep(1) allows users to grep for a string
across submodule boundaries. To make this work we add each submodule's
object sources to our own object database so that the objects can be
accessed directly.

The infrastructure for this depends on a global string list of submodule
paths. The caller is expected to call `add_submodule_odb_by_path()` for
each source and the object database will then eventually register all
submodule sources via `do_oid_object_info_extended()` in case it isn't
able to look up a specific object.

This reliance on global state is of course suboptimal with regards to
our libification efforts.

Refactor the logic so that the list of submodule sources is instead
tracked in the object database itself. This allows us to lose the
condition of `r == the_repository` before registering submodule sources
as we only ever add submodule sources to `the_repository` anyway. As
such, behaviour before and after this refactoring should always be the
same.

Rename the functions accordingly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2025-07-01 14:22:23 +02:00
committed by Junio C Hamano
parent 7eafd4472d
commit fc28a8a856
6 changed files with 50 additions and 43 deletions
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3
submodule-config.c
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@@ -810,7 +810,8 @@ static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void
repo_get_oid(repo, GITMODULES_HEAD, &oid) >= 0) {
config_source.blob = oidstr = xstrdup(oid_to_hex(&oid));
if (repo != the_repository)
add_submodule_odb_by_path(repo->objects->sources->path);
odb_add_submodule_source_by_path(the_repository->objects,
repo->objects->sources->path);
} else {
goto out;
}