[PATCH 1/2] dir.c: split up connect_work_tree_and_git_dir

[Stefan Beller <sbeller@google.com>]

In a later patch we want to treat the failures of each of the two steps
differently, so split them up first.

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 dir.c | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/dir.c b/dir.c
index d872cc1570..b2cb23fe88 100644
--- a/dir.c
+++ b/dir.c
@@ -2749,27 +2749,41 @@ void untracked_cache_add_to_index(struct index_state *istate,
 	untracked_cache_invalidate_path(istate, path);
 }
 
-/* Update gitfile and core.worktree setting to connect work tree and git dir */
-void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
+static void point_gitlink_file_to(const char *work_tree, const char *git_dir)
 {
 	struct strbuf file_name = STRBUF_INIT;
 	struct strbuf rel_path = STRBUF_INIT;
-	char *git_dir = xstrdup(real_path(git_dir_));
-	char *work_tree = xstrdup(real_path(work_tree_));
 
-	/* Update gitfile */
 	strbuf_addf(&file_name, "%s/.git", work_tree);
 	write_file(file_name.buf, "gitdir: %s",
 		   relative_path(git_dir, work_tree, &rel_path));
 
-	/* Update core.worktree setting */
-	strbuf_reset(&file_name);
+	strbuf_release(&file_name);
+	strbuf_release(&rel_path);
+}
+
+static void set_core_work_tree_to_connect(const char *work_tree, const char *git_dir)
+{
+	struct strbuf file_name = STRBUF_INIT;
+	struct strbuf rel_path = STRBUF_INIT;
+
 	strbuf_addf(&file_name, "%s/config", git_dir);
 	git_config_set_in_file(file_name.buf, "core.worktree",
 			       relative_path(work_tree, git_dir, &rel_path));
 
 	strbuf_release(&file_name);
 	strbuf_release(&rel_path);
+}
+
+/* Update gitfile and core.worktree setting to connect work tree and git dir */
+void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
+{
+	char *git_dir = xstrdup(real_path(git_dir_));
+	char *work_tree = xstrdup(real_path(work_tree_));
+
+	point_gitlink_file_to(work_tree, git_dir);
+	set_core_work_tree_to_connect(work_tree, git_dir);
+
 	free(work_tree);
 	free(git_dir);
 }
-- 
2.11.0.rc2.53.gb7b3fba.dirty