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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  package org.apache.http.client.entity;
28  
29  import java.io.IOException;
30  import java.io.InputStream;
31  
32  import org.apache.http.HttpEntity;
33  
34  /**
35   * {@link org.apache.http.entity.HttpEntityWrapper} responsible for handling
36   * deflate Content Coded responses. In RFC2616 terms, <code>deflate</code>
37   * means a <code>zlib</code> stream as defined in RFC1950. Some server
38   * implementations have misinterpreted RFC2616 to mean that a
39   * <code>deflate</code> stream as defined in RFC1951 should be used
40   * (or maybe they did that since that's how IE behaves?). It's confusing
41   * that <code>deflate</code> in HTTP 1.1 means <code>zlib</code> streams
42   * rather than <code>deflate</code> streams. We handle both types in here,
43   * since that's what is seen on the internet. Moral - prefer
44   * <code>gzip</code>!
45   *
46   * @see GzipDecompressingEntity
47   *
48   * @since 4.1
49   */
50  public class DeflateDecompressingEntity extends DecompressingEntity {
51  
52      /**
53       * Creates a new {@link DeflateDecompressingEntity} which will wrap the specified
54       * {@link HttpEntity}.
55       *
56       * @param entity
57       *            a non-null {@link HttpEntity} to be wrapped
58       */
59      public DeflateDecompressingEntity(final HttpEntity entity) {
60          super(entity, new InputStreamFactory() {
61  
62              @Override
63              public InputStream create(final InputStream instream) throws IOException {
64                  return new DeflateInputStream(instream);
65              }
66  
67          });
68      }
69  
70  }