/* GoodPath.java: a name path without bugs in it
 *
 * Copyright (c) 1998 The Regents of the University of California.
 *       All Rights Reserved.  See the COPYRIGHT filtcltk98.InvalidPathExceptione for details.
 */

package tutorial.tcltk98;

public class GoodPath {
    StringBuffer path;

    public void append (String element) throws PathException {
        if (element.indexOf('/') >= 0 ) {
            throw new PathException("Malformed path");
        }
        if (!element.equals("")) {
            if (path == null) {
                path = new StringBuffer();
            } else {
                path.append("/");
            }
            path.append(element);
        }
    }
    public String getPath () {
        if (path == null) {
            return "./";
        } else {
            return path.toString();
        }
    }
}