diff options
| -rw-r--r-- | worktree.c | 50 | ||||
| -rw-r--r-- | worktree.h | 5 |
2 files changed, 55 insertions, 0 deletions
diff --git a/worktree.c b/worktree.c index eb6121263b..d4606aa8cd 100644 --- a/worktree.c +++ b/worktree.c @@ -380,3 +380,53 @@ const struct worktree *find_shared_symref(const char *symref, return existing; } + +int submodule_uses_worktrees(const char *path) +{ + char *submodule_gitdir; + struct strbuf sb = STRBUF_INIT; + DIR *dir; + struct dirent *d; + int ret; + struct repository_format format; + + submodule_gitdir = git_pathdup_submodule(path, "%s", ""); + if (!submodule_gitdir) + return 0; + + /* The env would be set for the superproject. */ + get_common_dir_noenv(&sb, submodule_gitdir); + + /* + * The check below is only known to be good for repository format + * version 0 at the time of writing this code. + */ + strbuf_addstr(&sb, "/config"); + read_repository_format(&format, sb.buf); + if (format.version != 0) { + strbuf_release(&sb); + return 1; + } + + /* Replace config by worktrees. */ + strbuf_setlen(&sb, sb.len - strlen("config")); + strbuf_addstr(&sb, "worktrees"); + + /* See if there is any file inside the worktrees directory. */ + dir = opendir(sb.buf); + strbuf_release(&sb); + free(submodule_gitdir); + + if (!dir) + return 0; + + while ((d = readdir(dir)) != NULL) { + if (is_dot_or_dotdot(d->d_name)) + continue; + + ret = 1; + break; + } + closedir(dir); + return ret; +} diff --git a/worktree.h b/worktree.h index d59ce1fee8..6bfb985203 100644 --- a/worktree.h +++ b/worktree.h @@ -28,6 +28,11 @@ struct worktree { extern struct worktree **get_worktrees(unsigned flags); /* + * Returns 1 if linked worktrees exist, 0 otherwise. + */ +extern int submodule_uses_worktrees(const char *path); + +/* * Return git dir of the worktree. Note that the path may be relative. * If wt is NULL, git dir of current worktree is returned. */ |