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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.FileName;
20  import org.apache.commons.vfs.FileObject;
21  import org.apache.commons.vfs.provider.compressed.CompressedFileFileObject;
22  import org.apache.commons.vfs.provider.compressed.CompressedFileFileSystem;
23  
24  import java.io.InputStream;
25  import java.io.OutputStream;
26  import java.util.zip.GZIPInputStream;
27  import java.util.zip.GZIPOutputStream;
28  
29  /***
30   * the gzip file
31   *
32   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
33   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
34   */
35  public class GzipFileObject extends CompressedFileFileObject
36  {
37      protected GzipFileObject(FileName name, FileObject container, CompressedFileFileSystem fs)
38      {
39          super(name, container, fs);
40      }
41  
42      protected InputStream doGetInputStream() throws Exception
43      {
44          InputStream is = getContainer().getContent().getInputStream();
45          return new GZIPInputStream(is);
46      }
47  
48      protected OutputStream doGetOutputStream(boolean bAppend) throws Exception
49      {
50          OutputStream os = getContainer().getContent().getOutputStream(false);
51          return new GZIPOutputStream(os);
52      }
53  }