198 lines
7.7 KiB
C#
198 lines
7.7 KiB
C#
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// BZip2Constants.cs
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// Copyright (C) 2001 Mike Krueger
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// Linking this library statically or dynamically with other modules is
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// making a combined work based on this library. Thus, the terms and
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// conditions of the GNU General Public License cover the whole
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// combination.
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//
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// As a special exception, the copyright holders of this library give you
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// permission to link this library with independent modules to produce an
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// executable, regardless of the license terms of these independent
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// modules, and to copy and distribute the resulting executable under
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// terms of your choice, provided that you also meet, for each linked
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// independent module, the terms and conditions of the license of that
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// module. An independent module is a module which is not derived from
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// or based on this library. If you modify this library, you may extend
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// this exception to your version of the library, but you are not
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// obligated to do so. If you do not wish to do so, delete this
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// exception statement from your version.
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namespace ICSharpCode.SharpZipLib.BZip2
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{
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/// <summary>
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/// Defines internal values for both compression and decompression
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/// </summary>
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internal sealed class BZip2Constants
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{
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/// <summary>
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/// Random numbers used to randomise repetitive blocks
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/// </summary>
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public readonly static int[] RandomNumbers = {
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619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
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985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
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733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
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419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
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878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
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862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
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150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
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170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
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73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
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909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
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641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
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161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
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382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
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98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
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227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
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469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
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184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
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715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
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951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
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652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
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645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
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609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
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653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
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411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
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170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
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857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
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669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
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944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
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344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
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897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
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433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
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686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
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946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
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978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
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680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
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707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
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297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
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134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
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343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
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140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
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170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
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369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
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804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
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896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
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661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
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768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
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61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
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372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
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780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
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920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
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645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
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936, 638
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};
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/// <summary>
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/// When multiplied by compression parameter (1-9) gives the block size for compression
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/// 9 gives the best compression but uses the most memory.
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/// </summary>
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public const int BaseBlockSize = 100000;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int MaximumAlphaSize = 258;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int MaximumCodeLength = 23;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int RunA = 0;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int RunB = 1;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int GroupCount = 6;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int GroupSize = 50;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int NumberOfIterations = 4;
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int MaximumSelectors = (2 + (900000 / GroupSize));
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/// <summary>
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/// Backend constant
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/// </summary>
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public const int OvershootBytes = 20;
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private BZip2Constants()
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{
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}
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}
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}
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/* This file was derived from a file containing this license:
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*
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* This file is a part of bzip2 and/or libbzip2, a program and
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* library for lossless, block-sorting data compression.
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*
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* Copyright (C) 1996-1998 Julian R Seward. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. The origin of this software must not be misrepresented; you must
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* not claim that you wrote the original software. If you use this
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* software in a product, an acknowledgment in the product
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* documentation would be appreciated but is not required.
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*
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* 3. Altered source versions must be plainly marked as such, and must
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* not be misrepresented as being the original software.
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*
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Java version ported by Keiron Liddle, Aftex Software <keiron@aftexsw.com> 1999-2001
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*/
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