[PATCH 2/7] worktree.c: add update_worktree_location()

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 worktree.c | 18 ++++++++++++++++++
 worktree.h |  6 ++++++
 2 files changed, 24 insertions(+)

diff --git a/worktree.c b/worktree.c
index b238d87bf1..98e9f32c7f 100644
--- a/worktree.c
+++ b/worktree.c
@@ -326,6 +326,24 @@ int validate_worktree(const struct worktree *wt, struct strbuf *errmsg)
 	return ret;
 }
 
+void update_worktree_location(struct worktree *wt, const char *path_)
+{
+	struct strbuf path = STRBUF_INIT;
+
+	if (is_main_worktree(wt))
+		die("BUG: can't relocate main worktree");
+
+	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);
+	}
+	strbuf_release(&path);
+}
+
 int is_worktree_being_rebased(const struct worktree *wt,
 			      const char *target)
 {
diff --git a/worktree.h b/worktree.h
index cb577de8cd..a913428c3d 100644
--- a/worktree.h
+++ b/worktree.h
@@ -68,6 +68,12 @@ extern const char *is_worktree_locked(struct worktree *wt);
 extern int validate_worktree(const struct worktree *wt,
 			     struct strbuf *errmsg);
 
+/*
+ * Update worktrees/xxx/gitdir with the new path.
+ */
+extern void update_worktree_location(struct worktree *wt,
+				     const char *path_);
+
 /*
  * Free up the memory for worktree(s)
  */
-- 
2.16.0.47.g3d9b0fac3a




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