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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  
18  package org.apache.commons.configuration;
19  
20  import java.io.File;
21  import java.io.FileInputStream;
22  import java.io.FileOutputStream;
23  import java.io.IOException;
24  import java.io.InputStream;
25  import java.io.OutputStream;
26  import java.net.URL;
27  import java.net.URLConnection;
28  import java.net.URLStreamHandler;
29  
30  /**
31   * A custom URLStreamHandler to test loading and saving configurations to non
32   * standard URLs. This handler acts like a file handler with write support.
33   *
34   * @author Emmanuel Bourg
35   * @version $Id: FileURLStreamHandler.java 1222450 2011-12-22 21:01:33Z oheger $
36   */
37  public class FileURLStreamHandler extends URLStreamHandler
38  {
39      @Override
40      protected URLConnection openConnection(URL u) throws IOException
41      {
42          final File file = new File(u.getFile());
43  
44          return new URLConnection(u) {
45  
46              @Override
47              public void connect() throws IOException
48              {
49              }
50  
51              @Override
52              public InputStream getInputStream() throws IOException
53              {
54                  return new FileInputStream(file);
55              }
56  
57              @Override
58              public OutputStream getOutputStream() throws IOException
59              {
60                  return new FileOutputStream(file);
61              }
62          };
63      }
64  }