Function find_containing_dir

refs/ref-cache.c:179–195

* If refname is a reference name, find the ref_dir within the dir * tree that should hold refname. If refname is a directory name * (i.e., it ends in '/'), then return that ref_dir itself. dir must * represent the top-level directory and must already be complete. * Sort ref_dirs and recurse into subdirectories as necessary. Will * return NULL if the desired directory cannot be found. */

 * return NULL if the desired directory cannot be found.
 */
static struct ref_dir *find_containing_dir(struct ref_dir *dir,
					   const char *refname)
{
	const char *slash;
	for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
		size_t dirnamelen = slash - refname + 1;
		struct ref_dir *subdir;
		subdir = search_for_subdir(dir, refname, dirnamelen);
		if (!subdir) {
			dir = NULL;
			break;
		}
		dir = subdir;
	}

	return dir;
}

/*
 * Emit a warning and return true iff ref1 and ref2 have the same name