worktree: extract basename computation to new function

A subsequent patch will also need to compute the basename of the new
worktree, so factor out this logic into a new function.

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 04e6d0f92798f32dd10c1e677f3d85760f7dcdc6..25fe25b45f7771bb3b000ae92aa5f24875adc51e 100644 (file)
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -152,6 +152,25 @@ static void remove_junk_on_signal(int signo)
        raise(signo);
 }
 
+static const char *worktree_basename(const char *path, int *olen)
+{
+       const char *name;
+       int len;
+
+       len = strlen(path);
+       while (len && is_dir_sep(path[len - 1]))
+               len--;
+
+       for (name = path + len - 1; name > path; name--)
+               if (is_dir_sep(*name)) {
+                       name++;
+                       break;
+               }
+
+       *olen = len;
+       return name;
+}
+
 static int add_worktree(const char *path, const char **child_argv)
 {
        struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
@@ -165,15 +184,7 @@ static int add_worktree(const char *path, const char **child_argv)
        if (file_exists(path) && !is_empty_dir(path))
                die(_("'%s' already exists"), path);
 
-       len = strlen(path);
-       while (len && is_dir_sep(path[len - 1]))
-               len--;
-
-       for (name = path + len - 1; name > path; name--)
-               if (is_dir_sep(*name)) {
-                       name++;
-                       break;
-               }
+       name = worktree_basename(path, &len);
        strbuf_addstr(&sb_repo,
                      git_path("worktrees/%.*s", (int)(path + len - name), name));
        len = sb_repo.len;