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      1 /*
      2  * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
      3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
      4  *
      5  * This code is free software; you can redistribute it and/or modify it
      6  * under the terms of the GNU General Public License version 2 only, as
      7  * published by the Free Software Foundation.  Oracle designates this
      8  * particular file as subject to the "Classpath" exception as provided
      9  * by Oracle in the LICENSE file that accompanied this code.
     10  *
     11  * This code is distributed in the hope that it will be useful, but WITHOUT
     12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  * version 2 for more details (a copy is included in the LICENSE file that
     15  * accompanied this code).
     16  *
     17  * You should have received a copy of the GNU General Public License version
     18  * 2 along with this work; if not, write to the Free Software Foundation,
     19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
     20  *
     21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
     22  * or visit www.oracle.com if you need additional information or have any
     23  * questions.
     24  */
     25 
     26 package sun.nio.fs;
     27 
     28 import java.nio.file.*;
     29 import java.io.File;
     30 import java.io.IOException;
     31 import java.util.Iterator;
     32 import java.util.NoSuchElementException;
     33 
     34 /**
     35  * Base implementation class of {@code Path}.
     36  */
     37 
     38 abstract class AbstractPath implements Path {
     39     protected AbstractPath() { }
     40 
     41     @Override
     42     public final boolean startsWith(String other) {
     43         return startsWith(getFileSystem().getPath(other));
     44     }
     45 
     46     @Override
     47     public final boolean endsWith(String other) {
     48         return endsWith(getFileSystem().getPath(other));
     49     }
     50 
     51     @Override
     52     public final Path resolve(String other) {
     53         return resolve(getFileSystem().getPath(other));
     54     }
     55 
     56     @Override
     57     public final Path resolveSibling(Path other) {
     58         if (other == null)
     59             throw new NullPointerException();
     60         Path parent = getParent();
     61         return (parent == null) ? other : parent.resolve(other);
     62     }
     63 
     64     @Override
     65     public final Path resolveSibling(String other) {
     66         return resolveSibling(getFileSystem().getPath(other));
     67     }
     68 
     69     @Override
     70     public final Iterator<Path> iterator() {
     71         return new Iterator<Path>() {
     72             private int i = 0;
     73             @Override
     74             public boolean hasNext() {
     75                 return (i < getNameCount());
     76             }
     77             @Override
     78             public Path next() {
     79                 if (i < getNameCount()) {
     80                     Path result = getName(i);
     81                     i++;
     82                     return result;
     83                 } else {
     84                     throw new NoSuchElementException();
     85                 }
     86             }
     87             @Override
     88             public void remove() {
     89                 throw new UnsupportedOperationException();
     90             }
     91         };
     92     }
     93 
     94     @Override
     95     public final File toFile() {
     96         return new File(toString());
     97     }
     98 
     99     @Override
    100     public final WatchKey register(WatchService watcher,
    101                                    WatchEvent.Kind<?>... events)
    102         throws IOException
    103     {
    104         return register(watcher, events, new WatchEvent.Modifier[0]);
    105     }
    106 }
    107