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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 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  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/rfc1950">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  }