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1   /*
2    * Copyright 2009 Red Hat, Inc.
3    *
4    * Red Hat licenses this file to you under the Apache License, version 2.0
5    * (the "License"); you may not use this file except in compliance with the
6    * License.  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, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package org.jboss.netty.handler.codec.compression;
17  
18  /**
19   * The container file formats that wrap the stream compressed by the DEFLATE
20   * algorithm.
21   *
22   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
23   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
24   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
25   */
26  public enum ZlibWrapper {
27      /**
28       * The ZLIB wrapper as specified in <a href="http://tools.ietf.org/html/rfc1950">RFC 1950</a>.
29       */
30      ZLIB,
31      /**
32       * The GZIP wrapper as specified in <a href="http://tools.ietf.org/html/rfc1950">RFC 1952</a>.
33       */
34      GZIP,
35      /**
36       * Raw DEFLATE stream only (no header and no footer).
37       */
38      NONE,
39      /**
40       * Try {@link #ZLIB} first and then {@link #NONE} if the first attempt fails.
41       * Please note that you can specify this wrapper type only when decompressing.
42       */
43      ZLIB_OR_NONE;
44  }