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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.vfs.impl;
18  
19  import java.io.IOException;
20  import java.net.MalformedURLException;
21  import java.net.URL;
22  import java.net.URLConnection;
23  import java.net.URLStreamHandler;
24  
25  /***
26   * A proxy for URLs that are supported by the standard stream handler factory.
27   *
28   * @author <a href="mailto:brian@mmmanager.org">Brian Olsen</a>
29   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
30   */
31  class URLStreamHandlerProxy
32      extends URLStreamHandler
33  {
34      protected URLConnection openConnection(final URL url)
35          throws IOException
36      {
37          final URL proxyURL = new URL(url.toExternalForm());
38          return proxyURL.openConnection();
39      }
40  
41      protected void parseURL(final URL u,
42                              final String spec,
43                              final int start,
44                              final int limit)
45      {
46          try
47          {
48              final URL url = new URL(u, spec);
49              setURL(u, url.getProtocol(), url.getHost(),
50                  url.getPort(), url.getAuthority(), url.getUserInfo(),
51                  url.getFile(), url.getQuery(), url.getRef());
52          }
53          catch (MalformedURLException mue)
54          {
55              //We retrow this as a simple runtime exception.
56              //It is retrown in URL as a MalformedURLException anyway.
57              throw new RuntimeException(mue.getMessage());
58          }
59      }
60  }