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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.provider.http;
18  
19  import org.apache.commons.httpclient.Header;
20  import org.apache.commons.httpclient.HeaderElement;
21  import org.apache.commons.httpclient.HttpException;
22  import org.apache.commons.vfs.FileContent;
23  import org.apache.commons.vfs.FileContentInfo;
24  import org.apache.commons.vfs.FileContentInfoFactory;
25  import org.apache.commons.vfs.FileSystemException;
26  import org.apache.commons.vfs.impl.DefaultFileContentInfo;
27  
28  /***
29   * Description
30   * 
31   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
32   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
33   */
34  public class HttpFileContentInfoFactory implements FileContentInfoFactory
35  {
36      public FileContentInfo create(FileContent fileContent) throws FileSystemException
37      {
38          HttpFileObject httpFile = (HttpFileObject) fileContent.getFile();
39  
40          String contentType = null;
41          String contentEncoding = null;
42  
43          Header header = httpFile.getHeadMethod().getResponseHeader("content-type");
44          if (header != null)
45          {
46              HeaderElement[] element;
47              try
48              {
49                  element = header.getValues();
50              }
51              catch (HttpException e)
52              {
53                  throw new FileSystemException(e);
54              }
55              if (element != null && element.length > 0)
56              {
57                  contentType = element[0].getName();
58              }
59          }
60  
61          contentEncoding = httpFile.getHeadMethod().getResponseCharSet();
62  
63          return new DefaultFileContentInfo(contentType, contentEncoding);
64      }
65  }