GzipFileObject


1   /*
2    * Copyright 2002-2005 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.vfs.provider.gzip;
17  
18  import org.apache.commons.vfs.FileName;
19  import org.apache.commons.vfs.FileObject;
20  import org.apache.commons.vfs.provider.compressed.CompressedFileFileObject;
21  import org.apache.commons.vfs.provider.compressed.CompressedFileFileSystem;
22  
23  import java.io.InputStream  ;
24  import java.io.OutputStream  ;
25  import java.util.zip.GZIPInputStream  ;
26  import java.util.zip.GZIPOutputStream  ;
27  
28  /**
29   * the gzip file
30   *
31   * @author <a HREF="mailto:imario@apache.org">Mario Ivankovits</a>
32   */
33  public class GzipFileObject extends CompressedFileFileObject
34  {
35      protected GzipFileObject(FileName name, FileObject container, CompressedFileFileSystem fs)
36      {
37          super(name, container, fs);
38      }
39  
40      protected InputStream   doGetInputStream() throws Exception  
41      {
42          InputStream   is = getContainer().getContent().getInputStream();
43          return new GZIPInputStream  (is);
44      }
45  
46      protected OutputStream   doGetOutputStream(boolean bAppend) throws Exception  
47      {
48          OutputStream   os = getContainer().getContent().getOutputStream(false);
49          return new GZIPOutputStream  (os);
50      }
51  }
52
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