0
|
1 /* -*-mode:java; c-basic-offset:2; -*- */
|
|
2 /*
|
357
|
3 Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
|
0
|
4
|
|
5 Redistribution and use in source and binary forms, with or without
|
|
6 modification, are permitted provided that the following conditions are met:
|
|
7
|
|
8 1. Redistributions of source code must retain the above copyright notice,
|
|
9 this list of conditions and the following disclaimer.
|
|
10
|
357
|
11 2. Redistributions in binary form must reproduce the above copyright
|
|
12 notice, this list of conditions and the following disclaimer in
|
0
|
13 the documentation and/or other materials provided with the distribution.
|
|
14
|
|
15 3. The names of the authors may not be used to endorse or promote products
|
|
16 derived from this software without specific prior written permission.
|
|
17
|
|
18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
|
|
19 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
20 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
|
|
21 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
22 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
|
24 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
25 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
26 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
27 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
28 */
|
|
29 /*
|
|
30 * This program is based on zlib-1.1.3, so all credit should go authors
|
|
31 * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
|
|
32 * and contributors of zlib.
|
|
33 */
|
|
34
|
|
35 package com.jcraft.jzlib;
|
|
36
|
357
|
37 final public class JZlib{
|
|
38 private static final String version="1.1.0";
|
|
39 public static String version(){return version;}
|
|
40
|
|
41 static final public int MAX_WBITS=15; // 32K LZ77 window
|
|
42 static final public int DEF_WBITS=MAX_WBITS;
|
|
43
|
|
44 public enum WrapperType {
|
|
45 NONE, ZLIB, GZIP, ANY
|
|
46 }
|
0
|
47
|
357
|
48 public static final WrapperType W_NONE = WrapperType.NONE;
|
|
49 public static final WrapperType W_ZLIB = WrapperType.ZLIB;
|
|
50 public static final WrapperType W_GZIP = WrapperType.GZIP;
|
|
51 public static final WrapperType W_ANY = WrapperType.ANY;
|
0
|
52
|
357
|
53 // compression levels
|
|
54 static final public int Z_NO_COMPRESSION=0;
|
|
55 static final public int Z_BEST_SPEED=1;
|
|
56 static final public int Z_BEST_COMPRESSION=9;
|
|
57 static final public int Z_DEFAULT_COMPRESSION=(-1);
|
|
58
|
|
59 // compression strategy
|
|
60 static final public int Z_FILTERED=1;
|
|
61 static final public int Z_HUFFMAN_ONLY=2;
|
|
62 static final public int Z_DEFAULT_STRATEGY=0;
|
0
|
63
|
357
|
64 static final public int Z_NO_FLUSH=0;
|
|
65 static final public int Z_PARTIAL_FLUSH=1;
|
|
66 static final public int Z_SYNC_FLUSH=2;
|
|
67 static final public int Z_FULL_FLUSH=3;
|
|
68 static final public int Z_FINISH=4;
|
0
|
69
|
357
|
70 static final public int Z_OK=0;
|
|
71 static final public int Z_STREAM_END=1;
|
|
72 static final public int Z_NEED_DICT=2;
|
|
73 static final public int Z_ERRNO=-1;
|
|
74 static final public int Z_STREAM_ERROR=-2;
|
|
75 static final public int Z_DATA_ERROR=-3;
|
|
76 static final public int Z_MEM_ERROR=-4;
|
|
77 static final public int Z_BUF_ERROR=-5;
|
|
78 static final public int Z_VERSION_ERROR=-6;
|
|
79
|
|
80 // The three kinds of block type
|
|
81 static final public byte Z_BINARY = 0;
|
|
82 static final public byte Z_ASCII = 1;
|
|
83 static final public byte Z_UNKNOWN = 2;
|
|
84
|
|
85 public static long adler32_combine(long adler1, long adler2, long len2){
|
|
86 return Adler32.combine(adler1, adler2, len2);
|
|
87 }
|
|
88
|
|
89 public static long crc32_combine(long crc1, long crc2, long len2){
|
|
90 return CRC32.combine(crc1, crc2, len2);
|
|
91 }
|
0
|
92 }
|