[PATCH 05/21] environment: make `get_graft_file()` accept a repository

[Patrick Steinhardt <ps@xxxxxx>]

The `get_graft_file()` function retrieves the path to the graft 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@xxxxxx>
---
 builtin/replace.c | 2 +-
 commit.c          | 4 ++--
 environment.c     | 7 -------
 environment.h     | 2 --
 repository.c      | 7 +++++++
 repository.h      | 1 +
 6 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/builtin/replace.c b/builtin/replace.c
index 34cc4672bc1..04fbe580895 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -514,7 +514,7 @@ static int create_graft(int argc, const char **argv, int force, int gentle)
 
 static int convert_graft_file(int force)
 {
-	const char *graft_file = get_graft_file(the_repository);
+	const char *graft_file = repo_get_graft_file(the_repository);
 	FILE *fp = fopen_or_warn(graft_file, "r");
 	struct strbuf buf = STRBUF_INIT, err = STRBUF_INIT;
 	struct strvec args = STRVEC_INIT;
diff --git a/commit.c b/commit.c
index 3238772f521..1f710a92a17 100644
--- a/commit.c
+++ b/commit.c
@@ -292,14 +292,14 @@ static int read_graft_file(struct repository *r, const char *graft_file)
 
 void prepare_commit_graft(struct repository *r)
 {
-	char *graft_file;
+	const char *graft_file;
 
 	if (r->parsed_objects->commit_graft_prepared)
 		return;
 	if (!startup_info->have_repository)
 		return;
 
-	graft_file = get_graft_file(r);
+	graft_file = repo_get_graft_file(r);
 	read_graft_file(r, graft_file);
 	/* make sure shallows are read */
 	is_repository_shallow(r);
diff --git a/environment.c b/environment.c
index 10ef77576c3..371f01a705d 100644
--- a/environment.c
+++ b/environment.c
@@ -306,13 +306,6 @@ int odb_pack_keep(const char *name)
 	return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 }
 
-char *get_graft_file(struct repository *r)
-{
-	if (!r->graft_file)
-		BUG("git environment hasn't been setup");
-	return r->graft_file;
-}
-
 static void set_git_dir_1(const char *path)
 {
 	xsetenv(GIT_DIR_ENVIRONMENT, path, 1);
diff --git a/environment.h b/environment.h
index ff590cfff73..d12c48481b6 100644
--- a/environment.h
+++ b/environment.h
@@ -1,7 +1,6 @@
 #ifndef ENVIRONMENT_H
 #define ENVIRONMENT_H
 
-struct repository;
 struct strvec;
 
 /*
@@ -106,7 +105,6 @@ int have_git_dir(void);
 extern int is_bare_repository_cfg;
 int is_bare_repository(void);
 extern char *git_work_tree_cfg;
-char *get_graft_file(struct repository *r);
 void set_git_dir(const char *path, int make_realpath);
 const char *get_git_namespace(void);
 const char *strip_namespace(const char *namespaced_ref);
diff --git a/repository.c b/repository.c
index a9bbde80b5d..cdefcb4002d 100644
--- a/repository.c
+++ b/repository.c
@@ -119,6 +119,13 @@ const char *repo_get_index_file(struct repository *repo)
 	return repo->index_file;
 }
 
+const char *repo_get_graft_file(struct repository *repo)
+{
+	if (!repo->graft_file)
+		BUG("git environment hasn't been setup");
+	return repo->graft_file;
+}
+
 static void repo_set_commondir(struct repository *repo,
 			       const char *commondir)
 {
diff --git a/repository.h b/repository.h
index 15660ac2f19..ad0f984b444 100644
--- a/repository.h
+++ b/repository.h
@@ -210,6 +210,7 @@ const char *repo_get_git_dir(struct repository *repo);
 const char *repo_get_common_dir(struct repository *repo);
 const char *repo_get_object_directory(struct repository *repo);
 const char *repo_get_index_file(struct repository *repo);
+const char *repo_get_graft_file(struct repository *repo);
 
 /*
  * Define a custom repository layout. Any field can be NULL, which
-- 
2.46.0.421.g159f2d50e7.dirty