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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  }