environment: make `get_index_file()` accept a repository

The `get_index_file()` function retrieves the path to the index file
of `the_repository`. Make it accept a `struct repository` such that it
can work on arbitrary repositories and make it part of the repository
subsystem. This reduces our reliance on `the_repository` and clarifies
scope.

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

1 files changed, 8 insertions, 6 deletions

diff --git a/builtin/merge.c b/builtin/merge.c
index a2bae0700b..7f5475f738 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -696,7 +696,9 @@ static int read_tree_trivial(struct object_id *common, struct object_id *head,
 
 static void write_tree_trivial(struct object_id *oid)
 {
-	if (write_index_as_tree(oid, the_repository->index, get_index_file(), 0, NULL))
+	if (write_index_as_tree(oid, the_repository->index,
+				repo_get_index_file(the_repository),
+				0, NULL))
 		die(_("git write-tree failed to write a tree"));
 }
 
@@ -758,7 +760,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
 		}
 		if (write_locked_index(the_repository->index, &lock,
 				       COMMIT_LOCK | SKIP_IF_UNCHANGED))
-			die(_("unable to write %s"), get_index_file());
+			die(_("unable to write %s"), repo_get_index_file(the_repository));
 		return clean ? 0 : 1;
 	} else {
 		return try_merge_command(the_repository,
@@ -840,7 +842,7 @@ static void write_merge_heads(struct commit_list *);
 static void prepare_to_commit(struct commit_list *remoteheads)
 {
 	struct strbuf msg = STRBUF_INIT;
-	const char *index_file = get_index_file();
+	const char *index_file = repo_get_index_file(the_repository);
 
 	if (!no_verify) {
 		int invoked_hook;
@@ -880,8 +882,8 @@ static void prepare_to_commit(struct commit_list *remoteheads)
 		append_signoff(&msg, ignored_log_message_bytes(msg.buf, msg.len), 0);
 	write_merge_heads(remoteheads);
 	write_file_buf(git_path_merge_msg(the_repository), msg.buf, msg.len);
-	if (run_commit_hook(0 < option_edit, get_index_file(), NULL,
-			    "prepare-commit-msg",
+	if (run_commit_hook(0 < option_edit, repo_get_index_file(the_repository),
+			    NULL, "prepare-commit-msg",
 			    git_path_merge_msg(the_repository), "merge", NULL))
 		abort_commit(remoteheads, NULL);
 	if (0 < option_edit) {
@@ -889,7 +891,7 @@ static void prepare_to_commit(struct commit_list *remoteheads)
 			abort_commit(remoteheads, NULL);
 	}
 
-	if (!no_verify && run_commit_hook(0 < option_edit, get_index_file(),
+	if (!no_verify && run_commit_hook(0 < option_edit, repo_get_index_file(the_repository),
 					  NULL, "commit-msg",
 					  git_path_merge_msg(the_repository), NULL))
 		abort_commit(remoteheads, NULL);