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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.gzip;
18  
19  import org.apache.commons.vfs.Capability;
20  import org.apache.commons.vfs.FileName;
21  import org.apache.commons.vfs.FileObject;
22  import org.apache.commons.vfs.FileSystem;
23  import org.apache.commons.vfs.FileSystemException;
24  import org.apache.commons.vfs.FileSystemOptions;
25  import org.apache.commons.vfs.provider.compressed.CompressedFileFileProvider;
26  
27  import java.util.Arrays;
28  import java.util.Collection;
29  import java.util.Collections;
30  
31  /***
32   * Provides access to the content of gzip compressed files
33   *
34   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
35   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
36   */
37  public class GzipFileProvider extends CompressedFileFileProvider
38  {
39      protected final static Collection capabilities = Collections.unmodifiableCollection(Arrays.asList(new Capability[]
40      {
41          Capability.GET_LAST_MODIFIED,
42          Capability.GET_TYPE,
43          Capability.LIST_CHILDREN,
44          Capability.WRITE_CONTENT,
45          Capability.READ_CONTENT,
46          Capability.URI,
47          Capability.COMPRESS
48      }));
49  
50      public GzipFileProvider()
51      {
52          super();
53      }
54  
55      protected FileSystem createFileSystem(FileName name, FileObject file, FileSystemOptions fileSystemOptions) throws FileSystemException
56      {
57          return new GzipFileSystem(name, file, fileSystemOptions);
58      }
59  
60      public Collection getCapabilities()
61      {
62          return capabilities;
63      }
64  }