Method getParent

fluss-common/src/main/java/org/apache/fluss/fs/FsPath.java:294–311

Returns the parent of a path, i.e., everything that precedes the last separator or null if at root. @return the parent of a path or null if at root.

()

     * @return the parent of a path or <code>null</code> if at root.
     */
    public FsPath getParent() {
        final String path = uri.getPath();
        final int lastSlash = path.lastIndexOf('/');
        final int start = hasWindowsDrive(path, true) ? 3 : 0;
        if ((path.length() == start)
                || // empty path
                (lastSlash == start && path.length() == start + 1)) { // at root
            return null;
        }
        String parent;
        if (lastSlash == -1) {
            parent = CUR_DIR;
        } else {
            final int end = hasWindowsDrive(path, true) ? 3 : 0;
            parent = path.substring(0, lastSlash == end ? end + 1 : lastSlash);
        }
        return new FsPath(uri.getScheme(), uri.getAuthority(), parent);
    }

    @Override
    public String toString() {