worktree.c: add find_worktree()

diff --git a/worktree.h b/worktree.h
index 3198c8da2a614ed705a0ee25a7c5a9a7c217eaff..7ad15da0dcbab77d3baa110cd95a6d23c2ee334a 100644 (file)
--- a/worktree.h
+++ b/worktree.h
@@ -8,6 +8,7 @@ struct worktree {
        unsigned char head_sha1[20];
        int is_detached;
        int is_bare;
+       int is_current;
 };
 
 /* Functions for acting on the information about worktrees. */
@@ -28,6 +29,14 @@ extern struct worktree **get_worktrees(void);
  */
 extern const char *get_worktree_git_dir(const struct worktree *wt);
 
+/*
+ * Search a worktree that can be unambiguously identified by
+ * "arg". "prefix" must not be NULL.
+ */
+extern struct worktree *find_worktree(struct worktree **list,
+                                     const char *prefix,
+                                     const char *arg);
+
 /*
  * Free up the memory for worktree(s)
  */
@@ -35,10 +44,21 @@ extern void free_worktrees(struct worktree **);
 
 /*
  * Check if a per-worktree symref points to a ref in the main worktree
- * or any linked worktree, and return the path to the exising worktree
- * if it is.  Returns NULL if there is no existing ref.  The caller is
- * responsible for freeing the returned path.
+ * or any linked worktree, and return the worktree that holds the ref,
+ * or NULL otherwise. The result may be destroyed by the next call.
+ */
+extern const struct worktree *find_shared_symref(const char *symref,
+                                                const char *target);
+
+int is_worktree_being_rebased(const struct worktree *wt, const char *target);
+int is_worktree_being_bisected(const struct worktree *wt, const char *target);
+
+/*
+ * Similar to git_path() but can produce paths for a specified
+ * worktree instead of current one
  */
-extern char *find_shared_symref(const char *symref, const char *target);
+extern const char *worktree_git_path(const struct worktree *wt,
+                                    const char *fmt, ...)
+       __attribute__((format (printf, 2, 3)));
 
 #endif