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C# / CSharp Open Source » PDF » iTextSharp 
iTextSharp » Org » BouncyCastle » Utilities » Zlib » StaticTree.cs
using System;
/*
 * $Id: StaticTree.cs,v 1.2 2008/05/12 15:24:47 psoares33 Exp $
 *
Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright 
     notice, this list of conditions and the following disclaimer in 
     the documentation and/or other materials provided with the distribution.

  3. The names of the authors may not be used to endorse or promote products
     derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * This program is based on zlib-1.1.3, so all credit should go authors
 * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
 * and contributors of zlib.
 */

namespace Org.BouncyCastle.Utilities.Zlib{

    internal sealed class StaticTree{
        private const int MAX_BITS=15;

        private const int BL_CODES=19;
        private const int D_CODES=30;
        private const int LITERALS=256;
        private const int LENGTH_CODES=29;
        private const int L_CODES=(LITERALS+1+LENGTH_CODES);

        // Bit length codes must not exceed MAX_BL_BITS bits
        internal const int MAX_BL_BITS=7; 

        internal static readonly short[] static_ltree = {
                                                   12,  8, 140,  8,  76,  8, 204,  8,  44,  8,
                                                   172,  8, 108,  8, 236,  8,  28,  8, 156,  8,
                                                   92,  8, 220,  8,  60,  8, 188,  8, 124,  8,
                                                   252,  8,   2,  8, 130,  8,  66,  8, 194,  8,
                                                   34,  8, 162,  8,  98,  8, 226,  8,  18,  8,
                                                   146,  8,  82,  8, 210,  8,  50,  8, 178,  8,
                                                   114,  8, 242,  8,  10,  8, 138,  8,  74,  8,
                                                   202,  8,  42,  8, 170,  8, 106,  8, 234,  8,
                                                   26,  8, 154,  8,  90,  8, 218,  8,  58,  8,
                                                   186,  8, 122,  8, 250,  8,   6,  8, 134,  8,
                                                   70,  8, 198,  8,  38,  8, 166,  8, 102,  8,
                                                   230,  8,  22,  8, 150,  8,  86,  8, 214,  8,
                                                   54,  8, 182,  8, 118,  8, 246,  8,  14,  8,
                                                   142,  8,  78,  8, 206,  8,  46,  8, 174,  8,
                                                   110,  8, 238,  8,  30,  8, 158,  8,  94,  8,
                                                   222,  8,  62,  8, 190,  8, 126,  8, 254,  8,
                                                   1,  8, 129,  8,  65,  8, 193,  8,  33,  8,
                                                   161,  8,  97,  8, 225,  8,  17,  8, 145,  8,
                                                   81,  8, 209,  8,  49,  8, 177,  8, 113,  8,
                                                   241,  8,   9,  8, 137,  8,  73,  8, 201,  8,
                                                   41,  8, 169,  8, 105,  8, 233,  8,  25,  8,
                                                   153,  8,  89,  8, 217,  8,  57,  8, 185,  8,
                                                   121,  8, 249,  8,   5,  8, 133,  8,  69,  8,
                                                   197,  8,  37,  8, 165,  8, 101,  8, 229,  8,
                                                   21,  8, 149,  8,  85,  8, 213,  8,  53,  8,
                                                   181,  8, 117,  8, 245,  8,  13,  8, 141,  8,
                                                   77,  8, 205,  8,  45,  8, 173,  8, 109,  8,
                                                   237,  8,  29,  8, 157,  8,  93,  8, 221,  8,
                                                   61,  8, 189,  8, 125,  8, 253,  8,  19,  9,
                                                   275,  9, 147,  9, 403,  9,  83,  9, 339,  9,
                                                   211,  9, 467,  9,  51,  9, 307,  9, 179,  9,
                                                   435,  9, 115,  9, 371,  9, 243,  9, 499,  9,
                                                   11,  9, 267,  9, 139,  9, 395,  9,  75,  9,
                                                   331,  9, 203,  9, 459,  9,  43,  9, 299,  9,
                                                   171,  9, 427,  9, 107,  9, 363,  9, 235,  9,
                                                   491,  9,  27,  9, 283,  9, 155,  9, 411,  9,
                                                   91,  9, 347,  9, 219,  9, 475,  9,  59,  9,
                                                   315,  9, 187,  9, 443,  9, 123,  9, 379,  9,
                                                   251,  9, 507,  9,   7,  9, 263,  9, 135,  9,
                                                   391,  9,  71,  9, 327,  9, 199,  9, 455,  9,
                                                   39,  9, 295,  9, 167,  9, 423,  9, 103,  9,
                                                   359,  9, 231,  9, 487,  9,  23,  9, 279,  9,
                                                   151,  9, 407,  9,  87,  9, 343,  9, 215,  9,
                                                   471,  9,  55,  9, 311,  9, 183,  9, 439,  9,
                                                   119,  9, 375,  9, 247,  9, 503,  9,  15,  9,
                                                   271,  9, 143,  9, 399,  9,  79,  9, 335,  9,
                                                   207,  9, 463,  9,  47,  9, 303,  9, 175,  9,
                                                   431,  9, 111,  9, 367,  9, 239,  9, 495,  9,
                                                   31,  9, 287,  9, 159,  9, 415,  9,  95,  9,
                                                   351,  9, 223,  9, 479,  9,  63,  9, 319,  9,
                                                   191,  9, 447,  9, 127,  9, 383,  9, 255,  9,
                                                   511,  9,   0,  7,  64,  7,  32,  7,  96,  7,
                                                   16,  7,  80,  7,  48,  7, 112,  7,   8,  7,
                                                   72,  7,  40,  7, 104,  7,  24,  7,  88,  7,
                                                   56,  7, 120,  7,   4,  7,  68,  7,  36,  7,
                                                   100,  7,  20,  7,  84,  7,  52,  7, 116,  7,
                                                   3,  8, 131,  8,  67,  8, 195,  8,  35,  8,
                                                   163,  8,  99,  8, 227,  8
                                               };

        internal static readonly short[] static_dtree = {
                                                   0, 5, 16, 5,  8, 5, 24, 5,  4, 5,
                                                   20, 5, 12, 5, 28, 5,  2, 5, 18, 5,
                                                   10, 5, 26, 5,  6, 5, 22, 5, 14, 5,
                                                   30, 5,  1, 5, 17, 5,  9, 5, 25, 5,
                                                   5, 5, 21, 5, 13, 5, 29, 5,  3, 5,
                                                   19, 5, 11, 5, 27, 5,  7, 5, 23, 5
                                               };

        internal static readonly StaticTree static_l_desc =
            new StaticTree(static_ltree, Tree.extra_lbits,
            LITERALS+1, L_CODES, MAX_BITS);

        internal static readonly StaticTree static_d_desc =
            new StaticTree(static_dtree, Tree.extra_dbits,
            0,  D_CODES, MAX_BITS);

        internal static readonly StaticTree static_bl_desc =
            new StaticTree(null, Tree.extra_blbits,
            0, BL_CODES, MAX_BL_BITS);

        internal short[] static_tree;     // static tree or null
        internal int[] extra_bits;        // extra bits for each code or null
        internal int extra_base;          // base index for extra_bits
        internal int elems;               // max number of elements in the tree
        internal int max_length;          // max bit length for the codes

        internal StaticTree(short[] static_tree,
            int[] extra_bits,
            int extra_base,
            int elems,
            int max_length
            ){
            this.static_tree=static_tree;
            this.extra_bits=extra_bits;
            this.extra_base=extra_base;
            this.elems=elems;
            this.max_length=max_length;
        }
    }
}
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