move connect_work_tree_and_git_dir to dir.h

diff --git a/dir.c b/dir.c
index bfa8c8a9a51297c3a969c8706467504cb11ce51b..e0efd3c2c3de4eb3f8683564b626355af51a67fc 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -2748,3 +2748,28 @@ 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_)
+{
+       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_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);
+       free(work_tree);
+       free(git_dir);
+}