checkNotNull(pathname);
    if (pathname.length() == 0) {
      return ".";
    }

    // split the path apart
    Iterable<String> components = Splitter.on('/').omitEmptyStrings().split(pathname);
    List<String> path = new ArrayList<>();

    // resolve ., .., and //
    for (String component : components) {
      switch (component) {
        case ".":
          continue;

    checkNotNull(pathname);
    if (pathname.length() == 0) {
      return ".";
    }

    // split the path apart
    Iterable<String> components = Splitter.on('/').omitEmptyStrings().split(pathname);
    List<String> path = new ArrayList<>();

    // resolve ., .., and //
    for (String component : components) {
      switch (component) {
        case ".":
          continue;