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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.renderkit.html.util;
20  
21  import javax.servlet.ServletContext;
22  import java.io.InputStream;
23  import java.io.IOException;
24  import java.net.URL;
25  
26  /**
27   * A class which provide the resource using the standard <code>class.getResource</code> lookup
28   * stuff.
29   *
30   * @author imario (latest modification by $Author: skitching $)
31   * @version $Revision: 673833 $ $Date: 2008-07-03 16:58:05 -0500 (Thu, 03 Jul 2008) $
32   */
33  public class DefaultResourceProvider implements ResourceProvider
34  {
35      private final Class clazz;
36  
37      public DefaultResourceProvider(Class clazz)
38      {
39          this.clazz = clazz;
40      }
41  
42      protected URL getResource(String resource)
43      {
44          resource = "resource/" + resource;
45          return clazz.getResource(resource);
46      }
47  
48      public boolean exists(ServletContext context, String resource)
49      {
50          return getResource(resource) != null;
51      }
52  
53      public long getLastModified(ServletContext context, String resource) throws IOException
54      {
55          return getResource(resource).openConnection().getLastModified();
56      }
57  
58      public int getContentLength(ServletContext context, String resource) throws IOException
59      {
60          return getResource(resource).openConnection().getContentLength();
61      }
62  
63      public InputStream getInputStream(ServletContext context, String resource) throws IOException
64      {
65          return getResource(resource).openConnection().getInputStream();
66      }
67  
68      public String getEncoding(ServletContext context, String resource) throws IOException
69      {
70          return null; //Tomahawk-877, this has to be null for now to avoid encoding issues
71      }
72  }