This provides an API for checking if a worktree is locked. We need to
check this to avoid double locking a worktree, or try to unlock one when
it's not even locked.
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 6b3015b..cb30af3 100644
--- a/worktree.c
+++ b/worktree.c
@@ -231,6 +231,27 @@ int is_main_worktree(const struct worktree *wt)
return !wt->id;
}
+const char *is_worktree_locked(const struct worktree *wt)
+{
+ static struct strbuf sb = STRBUF_INIT;
+ struct strbuf path = STRBUF_INIT;
+
+ strbuf_git_common_path(&path, "worktrees/%s/locked", wt->id);
+
+ if (!file_exists(path.buf)) {
+ strbuf_release(&path);
+ return NULL;
+ }
+
+ strbuf_reset(&sb);
+ if (strbuf_read_file(&sb, path.buf, 0) < 0)
+ die_errno(_("failed to read '%s'"), path.buf);
+ strbuf_release(&path);
+
+ strbuf_trim(&sb);
+ return sb.buf;
+}
+
int is_worktree_being_rebased(const struct worktree *wt,
const char *target)
{
diff --git a/worktree.h b/worktree.h
index 39f1aa2..3a780c2 100644
--- a/worktree.h
+++ b/worktree.h
@@ -40,6 +40,12 @@ extern struct worktree *find_worktree_by_path(struct
worktree **list,
*/
extern int is_main_worktree(const struct worktree *wt);
+/*
+ * Return the reason string if the given worktree is locked. Return
+ * NULL otherwise. Return value is only valid until the next invocation.
+ */
+extern const char *is_worktree_locked(const struct worktree *wt);
+
/*
* Free up the memory for worktree(s)
*/
--
2.8.2.524.g6ff3d78
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