worktree: generalize delete_git_dir() to reduce code duplication

prune_worktrees() and delete_git_dir() both remove worktree
administrative entries from .git/worktrees, and their implementations
are nearly identical. The only difference is that prune_worktrees() is
also capable of removing a bogus non-worktree-related file from
.git/worktrees.

Simplify by extending delete_git_dir() to handle the little bit of
extra functionality needed by prune_worktrees(), and drop the
effectively duplicate code from the latter.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/worktree.c b/builtin/worktree.c
index a8128289cce78a007ee8adf94b51e6989ce35191..0affcb476c15ff6baf2b4c2b4ca73d7a38fb5175 100644 (file)
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -47,16 +47,17 @@ static int git_worktree_config(const char *var, const char *value, void *cb)
        return git_default_config(var, value, cb);
 }
 
-static int delete_git_dir(struct worktree *wt)
+static int delete_git_dir(const char *id)
 {
        struct strbuf sb = STRBUF_INIT;
-       int ret = 0;
+       int ret;
 
-       strbuf_addstr(&sb, git_common_path("worktrees/%s", wt->id));
-       if (remove_dir_recursively(&sb, 0)) {
+       strbuf_addstr(&sb, git_common_path("worktrees/%s", id));
+       ret = remove_dir_recursively(&sb, 0);
+       if (ret < 0 && errno == ENOTDIR)
+               ret = unlink(sb.buf);
+       if (ret)
                error_errno(_("failed to delete '%s'"), sb.buf);
-               ret = -1;
-       }
        strbuf_release(&sb);
        return ret;
 }
@@ -130,10 +131,8 @@ static int prune_worktree(const char *id, struct strbuf *reason)
 static void prune_worktrees(void)
 {
        struct strbuf reason = STRBUF_INIT;
-       struct strbuf path = STRBUF_INIT;
        DIR *dir = opendir(git_path("worktrees"));
        struct dirent *d;
-       int ret;
        if (!dir)
                return;
        while ((d = readdir(dir)) != NULL) {
@@ -146,18 +145,12 @@ static void prune_worktrees(void)
                        printf("%s\n", reason.buf);
                if (show_only)
                        continue;
-               git_path_buf(&path, "worktrees/%s", d->d_name);
-               ret = remove_dir_recursively(&path, 0);
-               if (ret < 0 && errno == ENOTDIR)
-                       ret = unlink(path.buf);
-               if (ret)
-                       error_errno(_("failed to remove '%s'"), path.buf);
+               delete_git_dir(d->d_name);
        }
        closedir(dir);
        if (!show_only)
                rmdir(git_path("worktrees"));
        strbuf_release(&reason);
-       strbuf_release(&path);
 }
 
 static int prune(int ac, const char **av, const char *prefix)
@@ -882,7 +875,7 @@ static int remove_worktree(int ac, const char **av, const char *prefix)
         * continue on even if ret is non-zero, there's no going back
         * from here.
         */
-       ret |= delete_git_dir(wt);
+       ret |= delete_git_dir(wt->id);
 
        free_worktrees(worktrees);
        return ret;