[PATCH 2/6] worktree.c: add update_worktree_location()

[Nguyễn Thái Ngọc Duy]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 worktree.c | 21 +++++++++++++++++++++
 worktree.h |  6 ++++++
 2 files changed, 27 insertions(+)

diff --git a/worktree.c b/worktree.c
index 929072a..7684951 100644
--- a/worktree.c
+++ b/worktree.c
@@ -354,6 +354,27 @@ int validate_worktree(const struct worktree *wt, int quiet)
        return 0;
 }
 
+int update_worktree_location(struct worktree *wt, const char *path_)
+{
+       struct strbuf path = STRBUF_INIT;
+       int ret = 0;
+
+       if (is_main_worktree(wt))
+               return 0;
+
+       strbuf_add_absolute_path(&path, path_);
+       if (fspathcmp(wt->path, path.buf)) {
+               write_file(git_common_path("worktrees/%s/gitdir",
+                                          wt->id),
+                          "%s/.git", real_path(path.buf));
+               free(wt->path);
+               wt->path = strbuf_detach(&path, NULL);
+               ret = 0;
+       }
+       strbuf_release(&path);
+       return ret;
+}
+
 int is_worktree_being_rebased(const struct worktree *wt,
                              const char *target)
 {
diff --git a/worktree.h b/worktree.h
index 4433db2..1ee03f4 100644
--- a/worktree.h
+++ b/worktree.h
@@ -57,6 +57,12 @@ extern const char *is_worktree_locked(struct worktree *wt);
  */
 extern int validate_worktree(const struct worktree *wt, int quiet);
 
+/*
+ * Update worktrees/xxx/gitdir with the new path.
+ */
+extern int update_worktree_location(struct worktree *wt,
+                                   const char *path_);
+
 /*
  * Free up the memory for worktree(s)
  */
-- 
2.8.2.524.g6ff3d78