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1   /*
2    * Copyright 2012 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the 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 io.netty.handler.codec.compression;
17  
18  /**
19   * The container file formats that wrap the stream compressed by the DEFLATE
20   * algorithm.
21   */
22  public enum ZlibWrapper {
23      /**
24       * The ZLIB wrapper as specified in <a href="http://tools.ietf.org/html/rfc1950">RFC 1950</a>.
25       */
26      ZLIB,
27      /**
28       * The GZIP wrapper as specified in <a href="http://tools.ietf.org/html/rfc1952">RFC 1952</a>.
29       */
30      GZIP,
31      /**
32       * Raw DEFLATE stream only (no header and no footer).
33       */
34      NONE,
35      /**
36       * Try {@link #ZLIB} first and then {@link #NONE} if the first attempt fails.
37       * Please note that you can specify this wrapper type only when decompressing.
38       */
39      ZLIB_OR_NONE
40  }