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QRCodeGenerator.cs
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QRCodeGenerator.cs
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/*
This file was taken from https://github.com/codebude/QRCoder and is licensed under the MIT license.
---------------------
The MIT License (MIT)
Copyright (c) 2013-2015 Raffael Herrmann
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
namespace QRCoder
{
public sealed class QRCodeGenerator : IDisposable
{
private static readonly char[] numTable = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
private static readonly char[] alphanumEncTable = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', ' ', '$', '%', '*', '+', '-', '.', '/', ':' };
private int[] capacityBaseValues = { 41, 25, 17, 10, 34, 20, 14, 8, 27, 16, 11, 7, 17, 10, 7, 4, 77, 47, 32, 20, 63, 38, 26, 16, 48, 29, 20, 12, 34, 20, 14, 8, 127, 77, 53, 32, 101, 61, 42, 26, 77, 47, 32, 20, 58, 35, 24, 15, 187, 114, 78, 48, 149, 90, 62, 38, 111, 67, 46, 28, 82, 50, 34, 21, 255, 154, 106, 65, 202, 122, 84, 52, 144, 87, 60, 37, 106, 64, 44, 27, 322, 195, 134, 82, 255, 154, 106, 65, 178, 108, 74, 45, 139, 84, 58, 36, 370, 224, 154, 95, 293, 178, 122, 75, 207, 125, 86, 53, 154, 93, 64, 39, 461, 279, 192, 118, 365, 221, 152, 93, 259, 157, 108, 66, 202, 122, 84, 52, 552, 335, 230, 141, 432, 262, 180, 111, 312, 189, 130, 80, 235, 143, 98, 60, 652, 395, 271, 167, 513, 311, 213, 131, 364, 221, 151, 93, 288, 174, 119, 74, 772, 468, 321, 198, 604, 366, 251, 155, 427, 259, 177, 109, 331, 200, 137, 85, 883, 535, 367, 226, 691, 419, 287, 177, 489, 296, 203, 125, 374, 227, 155, 96, 1022, 619, 425, 262, 796, 483, 331, 204, 580, 352, 241, 149, 427, 259, 177, 109, 1101, 667, 458, 282, 871, 528, 362, 223, 621, 376, 258, 159, 468, 283, 194, 120, 1250, 758, 520, 320, 991, 600, 412, 254, 703, 426, 292, 180, 530, 321, 220, 136, 1408, 854, 586, 361, 1082, 656, 450, 277, 775, 470, 322, 198, 602, 365, 250, 154, 1548, 938, 644, 397, 1212, 734, 504, 310, 876, 531, 364, 224, 674, 408, 280, 173, 1725, 1046, 718, 442, 1346, 816, 560, 345, 948, 574, 394, 243, 746, 452, 310, 191, 1903, 1153, 792, 488, 1500, 909, 624, 384, 1063, 644, 442, 272, 813, 493, 338, 208, 2061, 1249, 858, 528, 1600, 970, 666, 410, 1159, 702, 482, 297, 919, 557, 382, 235, 2232, 1352, 929, 572, 1708, 1035, 711, 438, 1224, 742, 509, 314, 969, 587, 403, 248, 2409, 1460, 1003, 618, 1872, 1134, 779, 480, 1358, 823, 565, 348, 1056, 640, 439, 270, 2620, 1588, 1091, 672, 2059, 1248, 857, 528, 1468, 890, 611, 376, 1108, 672, 461, 284, 2812, 1704, 1171, 721, 2188, 1326, 911, 561, 1588, 963, 661, 407, 1228, 744, 511, 315, 3057, 1853, 1273, 784, 2395, 1451, 997, 614, 1718, 1041, 715, 440, 1286, 779, 535, 330, 3283, 1990, 1367, 842, 2544, 1542, 1059, 652, 1804, 1094, 751, 462, 1425, 864, 593, 365, 3517, 2132, 1465, 902, 2701, 1637, 1125, 692, 1933, 1172, 805, 496, 1501, 910, 625, 385, 3669, 2223, 1528, 940, 2857, 1732, 1190, 732, 2085, 1263, 868, 534, 1581, 958, 658, 405, 3909, 2369, 1628, 1002, 3035, 1839, 1264, 778, 2181, 1322, 908, 559, 1677, 1016, 698, 430, 4158, 2520, 1732, 1066, 3289, 1994, 1370, 843, 2358, 1429, 982, 604, 1782, 1080, 742, 457, 4417, 2677, 1840, 1132, 3486, 2113, 1452, 894, 2473, 1499, 1030, 634, 1897, 1150, 790, 486, 4686, 2840, 1952, 1201, 3693, 2238, 1538, 947, 2670, 1618, 1112, 684, 2022, 1226, 842, 518, 4965, 3009, 2068, 1273, 3909, 2369, 1628, 1002, 2805, 1700, 1168, 719, 2157, 1307, 898, 553, 5253, 3183, 2188, 1347, 4134, 2506, 1722, 1060, 2949, 1787, 1228, 756, 2301, 1394, 958, 590, 5529, 3351, 2303, 1417, 4343, 2632, 1809, 1113, 3081, 1867, 1283, 790, 2361, 1431, 983, 605, 5836, 3537, 2431, 1496, 4588, 2780, 1911, 1176, 3244, 1966, 1351, 832, 2524, 1530, 1051, 647, 6153, 3729, 2563, 1577, 4775, 2894, 1989, 1224, 3417, 2071, 1423, 876, 2625, 1591, 1093, 673, 6479, 3927, 2699, 1661, 5039, 3054, 2099, 1292, 3599, 2181, 1499, 923, 2735, 1658, 1139, 701, 6743, 4087, 2809, 1729, 5313, 3220, 2213, 1362, 3791, 2298, 1579, 972, 2927, 1774, 1219, 750, 7089, 4296, 2953, 1817, 5596, 3391, 2331, 1435, 3993, 2420, 1663, 1024, 3057, 1852, 1273, 784 };
private int[] capacityECCBaseValues = { 19, 7, 1, 19, 0, 0, 16, 10, 1, 16, 0, 0, 13, 13, 1, 13, 0, 0, 9, 17, 1, 9, 0, 0, 34, 10, 1, 34, 0, 0, 28, 16, 1, 28, 0, 0, 22, 22, 1, 22, 0, 0, 16, 28, 1, 16, 0, 0, 55, 15, 1, 55, 0, 0, 44, 26, 1, 44, 0, 0, 34, 18, 2, 17, 0, 0, 26, 22, 2, 13, 0, 0, 80, 20, 1, 80, 0, 0, 64, 18, 2, 32, 0, 0, 48, 26, 2, 24, 0, 0, 36, 16, 4, 9, 0, 0, 108, 26, 1, 108, 0, 0, 86, 24, 2, 43, 0, 0, 62, 18, 2, 15, 2, 16, 46, 22, 2, 11, 2, 12, 136, 18, 2, 68, 0, 0, 108, 16, 4, 27, 0, 0, 76, 24, 4, 19, 0, 0, 60, 28, 4, 15, 0, 0, 156, 20, 2, 78, 0, 0, 124, 18, 4, 31, 0, 0, 88, 18, 2, 14, 4, 15, 66, 26, 4, 13, 1, 14, 194, 24, 2, 97, 0, 0, 154, 22, 2, 38, 2, 39, 110, 22, 4, 18, 2, 19, 86, 26, 4, 14, 2, 15, 232, 30, 2, 116, 0, 0, 182, 22, 3, 36, 2, 37, 132, 20, 4, 16, 4, 17, 100, 24, 4, 12, 4, 13, 274, 18, 2, 68, 2, 69, 216, 26, 4, 43, 1, 44, 154, 24, 6, 19, 2, 20, 122, 28, 6, 15, 2, 16, 324, 20, 4, 81, 0, 0, 254, 30, 1, 50, 4, 51, 180, 28, 4, 22, 4, 23, 140, 24, 3, 12, 8, 13, 370, 24, 2, 92, 2, 93, 290, 22, 6, 36, 2, 37, 206, 26, 4, 20, 6, 21, 158, 28, 7, 14, 4, 15, 428, 26, 4, 107, 0, 0, 334, 22, 8, 37, 1, 38, 244, 24, 8, 20, 4, 21, 180, 22, 12, 11, 4, 12, 461, 30, 3, 115, 1, 116, 365, 24, 4, 40, 5, 41, 261, 20, 11, 16, 5, 17, 197, 24, 11, 12, 5, 13, 523, 22, 5, 87, 1, 88, 415, 24, 5, 41, 5, 42, 295, 30, 5, 24, 7, 25, 223, 24, 11, 12, 7, 13, 589, 24, 5, 98, 1, 99, 453, 28, 7, 45, 3, 46, 325, 24, 15, 19, 2, 20, 253, 30, 3, 15, 13, 16, 647, 28, 1, 107, 5, 108, 507, 28, 10, 46, 1, 47, 367, 28, 1, 22, 15, 23, 283, 28, 2, 14, 17, 15, 721, 30, 5, 120, 1, 121, 563, 26, 9, 43, 4, 44, 397, 28, 17, 22, 1, 23, 313, 28, 2, 14, 19, 15, 795, 28, 3, 113, 4, 114, 627, 26, 3, 44, 11, 45, 445, 26, 17, 21, 4, 22, 341, 26, 9, 13, 16, 14, 861, 28, 3, 107, 5, 108, 669, 26, 3, 41, 13, 42, 485, 30, 15, 24, 5, 25, 385, 28, 15, 15, 10, 16, 932, 28, 4, 116, 4, 117, 714, 26, 17, 42, 0, 0, 512, 28, 17, 22, 6, 23, 406, 30, 19, 16, 6, 17, 1006, 28, 2, 111, 7, 112, 782, 28, 17, 46, 0, 0, 568, 30, 7, 24, 16, 25, 442, 24, 34, 13, 0, 0, 1094, 30, 4, 121, 5, 122, 860, 28, 4, 47, 14, 48, 614, 30, 11, 24, 14, 25, 464, 30, 16, 15, 14, 16, 1174, 30, 6, 117, 4, 118, 914, 28, 6, 45, 14, 46, 664, 30, 11, 24, 16, 25, 514, 30, 30, 16, 2, 17, 1276, 26, 8, 106, 4, 107, 1000, 28, 8, 47, 13, 48, 718, 30, 7, 24, 22, 25, 538, 30, 22, 15, 13, 16, 1370, 28, 10, 114, 2, 115, 1062, 28, 19, 46, 4, 47, 754, 28, 28, 22, 6, 23, 596, 30, 33, 16, 4, 17, 1468, 30, 8, 122, 4, 123, 1128, 28, 22, 45, 3, 46, 808, 30, 8, 23, 26, 24, 628, 30, 12, 15, 28, 16, 1531, 30, 3, 117, 10, 118, 1193, 28, 3, 45, 23, 46, 871, 30, 4, 24, 31, 25, 661, 30, 11, 15, 31, 16, 1631, 30, 7, 116, 7, 117, 1267, 28, 21, 45, 7, 46, 911, 30, 1, 23, 37, 24, 701, 30, 19, 15, 26, 16, 1735, 30, 5, 115, 10, 116, 1373, 28, 19, 47, 10, 48, 985, 30, 15, 24, 25, 25, 745, 30, 23, 15, 25, 16, 1843, 30, 13, 115, 3, 116, 1455, 28, 2, 46, 29, 47, 1033, 30, 42, 24, 1, 25, 793, 30, 23, 15, 28, 16, 1955, 30, 17, 115, 0, 0, 1541, 28, 10, 46, 23, 47, 1115, 30, 10, 24, 35, 25, 845, 30, 19, 15, 35, 16, 2071, 30, 17, 115, 1, 116, 1631, 28, 14, 46, 21, 47, 1171, 30, 29, 24, 19, 25, 901, 30, 11, 15, 46, 16, 2191, 30, 13, 115, 6, 116, 1725, 28, 14, 46, 23, 47, 1231, 30, 44, 24, 7, 25, 961, 30, 59, 16, 1, 17, 2306, 30, 12, 121, 7, 122, 1812, 28, 12, 47, 26, 48, 1286, 30, 39, 24, 14, 25, 986, 30, 22, 15, 41, 16, 2434, 30, 6, 121, 14, 122, 1914, 28, 6, 47, 34, 48, 1354, 30, 46, 24, 10, 25, 1054, 30, 2, 15, 64, 16, 2566, 30, 17, 122, 4, 123, 1992, 28, 29, 46, 14, 47, 1426, 30, 49, 24, 10, 25, 1096, 30, 24, 15, 46, 16, 2702, 30, 4, 122, 18, 123, 2102, 28, 13, 46, 32, 47, 1502, 30, 48, 24, 14, 25, 1142, 30, 42, 15, 32, 16, 2812, 30, 20, 117, 4, 118, 2216, 28, 40, 47, 7, 48, 1582, 30, 43, 24, 22, 25, 1222, 30, 10, 15, 67, 16, 2956, 30, 19, 118, 6, 119, 2334, 28, 18, 47, 31, 48, 1666, 30, 34, 24, 34, 25, 1276, 30, 20, 15, 61, 16 };
private int[] alignmentPatternBaseValues = { 0, 0, 0, 0, 0, 0, 0, 6, 18, 0, 0, 0, 0, 0, 6, 22, 0, 0, 0, 0, 0, 6, 26, 0, 0, 0, 0, 0, 6, 30, 0, 0, 0, 0, 0, 6, 34, 0, 0, 0, 0, 0, 6, 22, 38, 0, 0, 0, 0, 6, 24, 42, 0, 0, 0, 0, 6, 26, 46, 0, 0, 0, 0, 6, 28, 50, 0, 0, 0, 0, 6, 30, 54, 0, 0, 0, 0, 6, 32, 58, 0, 0, 0, 0, 6, 34, 62, 0, 0, 0, 0, 6, 26, 46, 66, 0, 0, 0, 6, 26, 48, 70, 0, 0, 0, 6, 26, 50, 74, 0, 0, 0, 6, 30, 54, 78, 0, 0, 0, 6, 30, 56, 82, 0, 0, 0, 6, 30, 58, 86, 0, 0, 0, 6, 34, 62, 90, 0, 0, 0, 6, 28, 50, 72, 94, 0, 0, 6, 26, 50, 74, 98, 0, 0, 6, 30, 54, 78, 102, 0, 0, 6, 28, 54, 80, 106, 0, 0, 6, 32, 58, 84, 110, 0, 0, 6, 30, 58, 86, 114, 0, 0, 6, 34, 62, 90, 118, 0, 0, 6, 26, 50, 74, 98, 122, 0, 6, 30, 54, 78, 102, 126, 0, 6, 26, 52, 78, 104, 130, 0, 6, 30, 56, 82, 108, 134, 0, 6, 34, 60, 86, 112, 138, 0, 6, 30, 58, 86, 114, 142, 0, 6, 34, 62, 90, 118, 146, 0, 6, 30, 54, 78, 102, 126, 150, 6, 24, 50, 76, 102, 128, 154, 6, 28, 54, 80, 106, 132, 158, 6, 32, 58, 84, 110, 136, 162, 6, 26, 54, 82, 110, 138, 166, 6, 30, 58, 86, 114, 142, 170 };
private int[] remainderBits = { 0, 7, 7, 7, 7, 7, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0 };
private List<AlignmentPattern> alignmentPatternTable;
private List<ErrorCorrectionCodeInfo> capacityECCTable;
private List<VersionInfo> capacityTable;
private List<Antilog> galoisField;
private Dictionary<char, int> alphanumEncDict;
public enum EciMode
{
Default = 0,
Iso8859_1 = 3,
Iso8859_2 = 4,
Utf8 = 26
}
public QRCodeGenerator()
{
this.CreateAntilogTable();
this.CreateAlphanumEncDict();
this.CreateCapacityTable();
this.CreateCapacityECCTable();
this.CreateAlignmentPatternTable();
}
public QRCodeData CreateQrCode(string plainText, ErrorCorrectionLevel eccLevel = ErrorCorrectionLevel.Q, bool forceUtf8 = false, bool utf8BOM = false, EciMode eciMode = EciMode.Default, int requestedVersion = -1)
{
EncodingMode encoding = GetEncodingFromPlaintext(plainText, forceUtf8);
var codedText = this.PlainTextToBinary(plainText, encoding, eciMode, utf8BOM, forceUtf8);
var dataInputLength = this.GetDataLength(encoding, plainText, codedText, forceUtf8);
int version = requestedVersion;
if (version == -1)
{
version = this.GetVersion(dataInputLength, encoding, eccLevel);
}
string modeIndicator = string.Empty;
if (eciMode != EciMode.Default)
{
modeIndicator = DecToBin((int)EncodingMode.ECI, 4);
modeIndicator += DecToBin((int)eciMode, 8);
}
modeIndicator += DecToBin((int)encoding, 4);
var countIndicator = DecToBin(dataInputLength, this.GetCountIndicatorLength(version, encoding));
var bitString = modeIndicator + countIndicator;
bitString += codedText;
//Fill up data code word
var eccInfo = this.capacityECCTable.Single(x => x.Version == version && x.ErrorCorrectionLevel.Equals(eccLevel));
var dataLength = eccInfo.TotalDataCodewords * 8;
var lengthDiff = dataLength - bitString.Length;
if (lengthDiff > 0)
{
bitString += new string('0', Math.Min(lengthDiff, 4));
}
if ((bitString.Length % 8) != 0)
{
bitString += new string('0', 8 - (bitString.Length % 8));
}
while (bitString.Length < dataLength)
{
bitString += "1110110000010001";
}
if (bitString.Length > dataLength)
{
bitString = bitString.Substring(0, dataLength);
}
// Calculate error correction words
var codeWordWithECC = new List<CodewordBlock>();
for (var i = 0; i < eccInfo.BlocksInGroup1; i++)
{
var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup1 * 8, eccInfo.CodewordsInGroup1 * 8);
var bitBlockList = this.BinaryStringToBitBlockList(bitStr);
var bitBlockListDec = this.BinaryStringListToDecList(bitBlockList);
var eccWordList = this.CalculateECCWords(bitStr, eccInfo);
var eccWordListDec = this.BinaryStringListToDecList(eccWordList);
codeWordWithECC.Add(
new CodewordBlock(1,
i + 1,
bitStr,
bitBlockList,
eccWordList,
bitBlockListDec,
eccWordListDec)
);
}
bitString = bitString.Substring(eccInfo.BlocksInGroup1 * eccInfo.CodewordsInGroup1 * 8);
for (var i = 0; i < eccInfo.BlocksInGroup2; i++)
{
var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup2 * 8, eccInfo.CodewordsInGroup2 * 8);
var bitBlockList = this.BinaryStringToBitBlockList(bitStr);
var bitBlockListDec = this.BinaryStringListToDecList(bitBlockList);
var eccWordList = this.CalculateECCWords(bitStr, eccInfo);
var eccWordListDec = this.BinaryStringListToDecList(eccWordList);
codeWordWithECC.Add(new CodewordBlock(2,
i + 1,
bitStr,
bitBlockList,
eccWordList,
bitBlockListDec,
eccWordListDec)
);
}
//Interleave code words
var interleavedWordsSb = new StringBuilder();
for (var i = 0; i < Math.Max(eccInfo.CodewordsInGroup1, eccInfo.CodewordsInGroup2); i++)
{
foreach (var codeBlock in codeWordWithECC)
{
if (codeBlock.CodeWords.Count > i)
{
interleavedWordsSb.Append(codeBlock.CodeWords[i]);
}
}
}
for (var i = 0; i < eccInfo.ECCPerBlock; i++)
{
foreach (var codeBlock in codeWordWithECC)
{
if (codeBlock.ECCWords.Count > i)
{
interleavedWordsSb.Append(codeBlock.ECCWords[i]);
}
}
}
interleavedWordsSb.Append(new string('0', this.remainderBits[version - 1]));
var interleavedData = interleavedWordsSb.ToString();
//Place interleaved data on module matrix
var qr = new QRCodeData(version);
var blockedModules = new List<Rectangle>();
ModulePlacer.PlaceFinderPatterns(ref qr, ref blockedModules);
ModulePlacer.ReserveSeperatorAreas(qr.ModuleMatrix.Count, ref blockedModules);
ModulePlacer.PlaceAlignmentPatterns(ref qr, this.alignmentPatternTable.Where(x => x.Version == version).Select(x => x.PatternPositions).First(), ref blockedModules);
ModulePlacer.PlaceTimingPatterns(ref qr, ref blockedModules);
ModulePlacer.PlaceDarkModule(ref qr, version, ref blockedModules);
ModulePlacer.ReserveVersionAreas(qr.ModuleMatrix.Count, version, ref blockedModules);
ModulePlacer.PlaceDataWords(ref qr, interleavedData, ref blockedModules);
var maskVersion = ModulePlacer.MaskCode(ref qr, version, ref blockedModules, eccLevel);
var formatStr = GetFormatString(eccLevel, maskVersion);
ModulePlacer.PlaceFormat(ref qr, formatStr);
if (version >= 7)
{
var versionString = GetVersionString(version);
ModulePlacer.PlaceVersion(ref qr, versionString);
}
ModulePlacer.AddQuietZone(ref qr);
return qr;
}
private static string GetFormatString(ErrorCorrectionLevel level, int maskVersion)
{
var generator = "10100110111";
var fStrMask = "101010000010010";
var fStr = (level == ErrorCorrectionLevel.L) ? "01" : (level == ErrorCorrectionLevel.M) ? "00" : (level == ErrorCorrectionLevel.Q) ? "11" : "10";
fStr += DecToBin(maskVersion, 3);
var fStrEcc = fStr.PadRight(15, '0').TrimStart('0');
while (fStrEcc.Length > 10)
{
var sb = new StringBuilder();
generator = generator.PadRight(fStrEcc.Length, '0');
for (var i = 0; i < fStrEcc.Length; i++)
{
sb.Append((Convert.ToInt32(fStrEcc[i]) ^ Convert.ToInt32(generator[i])).ToString());
}
fStrEcc = sb.ToString().TrimStart('0');
}
fStrEcc = fStrEcc.PadLeft(10, '0');
fStr += fStrEcc;
var sbMask = new StringBuilder();
for (var i = 0; i < fStr.Length; i++)
{
sbMask.Append((Convert.ToInt32(fStr[i]) ^ Convert.ToInt32(fStrMask[i])).ToString());
}
return sbMask.ToString();
}
private static string GetVersionString(int version)
{
var generator = "1111100100101";
var vStr = DecToBin(version, 6);
var vStrEcc = vStr.PadRight(18, '0').TrimStart('0');
while (vStrEcc.Length > 12)
{
var sb = new StringBuilder();
generator = generator.PadRight(vStrEcc.Length, '0');
for (var i = 0; i < vStrEcc.Length; i++)
{
sb.Append((Convert.ToInt32(vStrEcc[i]) ^ Convert.ToInt32(generator[i])).ToString());
}
vStrEcc = sb.ToString().TrimStart('0');
}
vStrEcc = vStrEcc.PadLeft(12, '0');
vStr += vStrEcc;
return vStr;
}
private static class ModulePlacer
{
public static void AddQuietZone(ref QRCodeData qrCode)
{
var quietLine = new bool[qrCode.ModuleMatrix.Count + 8];
for (var i = 0; i < quietLine.Length; i++)
{
quietLine[i] = false;
}
for (var i = 0; i < 4; i++)
{
qrCode.ModuleMatrix.Insert(0, new BitArray(quietLine));
}
for (var i = 0; i < 4; i++)
{
qrCode.ModuleMatrix.Add(new BitArray(quietLine));
}
for (var i = 4; i < qrCode.ModuleMatrix.Count - 4; i++)
{
bool[] quietPart = { false, false, false, false };
var tmpLine = new List<bool>(quietPart);
tmpLine.AddRange(qrCode.ModuleMatrix[i].Cast<bool>());
tmpLine.AddRange(quietPart);
qrCode.ModuleMatrix[i] = new BitArray(tmpLine.ToArray());
}
}
private static string ReverseString(string inp)
{
string newStr = string.Empty;
if (inp.Length > 0)
{
for (int i = inp.Length - 1; i >= 0; i--)
{
newStr += inp[i];
}
}
return newStr;
}
public static void PlaceVersion(ref QRCodeData qrCode, string versionStr)
{
var size = qrCode.ModuleMatrix.Count;
var vStr = ReverseString(versionStr);
for (var x = 0; x < 6; x++)
{
for (var y = 0; y < 3; y++)
{
qrCode.ModuleMatrix[y + size - 11][x] = vStr[x * 3 + y] == '1';
qrCode.ModuleMatrix[x][y + size - 11] = vStr[x * 3 + y] == '1';
}
}
}
public static void PlaceFormat(ref QRCodeData qrCode, string formatStr)
{
var size = qrCode.ModuleMatrix.Count;
var fStr = ReverseString(formatStr);
var modules = new[,] { { 8, 0, size - 1, 8 }, { 8, 1, size - 2, 8 }, { 8, 2, size - 3, 8 }, { 8, 3, size - 4, 8 }, { 8, 4, size - 5, 8 }, { 8, 5, size - 6, 8 }, { 8, 7, size - 7, 8 }, { 8, 8, size - 8, 8 }, { 7, 8, 8, size - 7 }, { 5, 8, 8, size - 6 }, { 4, 8, 8, size - 5 }, { 3, 8, 8, size - 4 }, { 2, 8, 8, size - 3 }, { 1, 8, 8, size - 2 }, { 0, 8, 8, size - 1 } };
for (var i = 0; i < 15; i++)
{
var p1 = new Point(modules[i, 0], modules[i, 1]);
var p2 = new Point(modules[i, 2], modules[i, 3]);
qrCode.ModuleMatrix[p1.Y][p1.X] = fStr[i] == '1';
qrCode.ModuleMatrix[p2.Y][p2.X] = fStr[i] == '1';
}
}
public static int MaskCode(ref QRCodeData qrCode, int version, ref List<Rectangle> blockedModules, ErrorCorrectionLevel eccLevel)
{
var patternName = string.Empty;
var patternScore = 0;
var size = qrCode.ModuleMatrix.Count;
foreach (var pattern in typeof(MaskPattern).GetMethods())
{
if (pattern.Name.Length != 8 || pattern.Name.Substring(0, 7) != "Pattern")
{
continue;
}
var qrTemp = new QRCodeData(version);
for (var y = 0; y < size; y++)
{
for (var x = 0; x < size; x++)
{
qrTemp.ModuleMatrix[y][x] = qrCode.ModuleMatrix[y][x];
}
}
var patternNameFragment = pattern.Name.Substring(7, 1);
var formatStr = GetFormatString(eccLevel, int.Parse(patternNameFragment) - 1);
ModulePlacer.PlaceFormat(ref qrTemp, formatStr);
if (version >= 7)
{
var versionString = GetVersionString(version);
ModulePlacer.PlaceVersion(ref qrTemp, versionString);
}
for (var x = 0; x < size; x++)
{
for (var y = 0; y < size; y++)
{
if (!IsBlocked(new Rectangle(x, y, 1, 1), blockedModules))
{
qrTemp.ModuleMatrix[y][x] ^= (bool)pattern.Invoke(null, new object[] { x, y });
}
}
}
var score = MaskPattern.Score(ref qrTemp);
if (string.IsNullOrEmpty(patternName) || patternScore > score)
{
patternName = pattern.Name;
patternScore = score;
}
}
var patternMethod = typeof(MaskPattern).GetMethod(patternName);
for (var x = 0; x < size; x++)
{
for (var y = 0; y < size; y++)
{
if (!IsBlocked(new Rectangle(x, y, 1, 1), blockedModules))
{
qrCode.ModuleMatrix[y][x] ^= (bool)patternMethod.Invoke(null, new object[] { x, y });
}
}
}
return Convert.ToInt32(patternMethod.Name.Substring(patternMethod.Name.Length - 1, 1)) - 1;
}
public static void PlaceDataWords(ref QRCodeData qrCode, string data, ref List<Rectangle> blockedModules)
{
var size = qrCode.ModuleMatrix.Count;
var up = true;
var datawords = new Queue<bool>();
for (int i = 0; i < data.Length; i++)
{
datawords.Enqueue(data[i] != '0');
}
for (var x = size - 1; x >= 0; x = x - 2)
{
if (x == 6)
{
x = 5;
}
for (var yMod = 1; yMod <= size; yMod++)
{
int y;
if (up)
{
y = size - yMod;
if (datawords.Count > 0 && !IsBlocked(new Rectangle(x, y, 1, 1), blockedModules))
{
qrCode.ModuleMatrix[y][x] = datawords.Dequeue();
}
if (datawords.Count > 0 && x > 0 && !IsBlocked(new Rectangle(x - 1, y, 1, 1), blockedModules))
{
qrCode.ModuleMatrix[y][x - 1] = datawords.Dequeue();
}
}
else
{
y = yMod - 1;
if (datawords.Count > 0 && !IsBlocked(new Rectangle(x, y, 1, 1), blockedModules))
{
qrCode.ModuleMatrix[y][x] = datawords.Dequeue();
}
if (datawords.Count > 0 && x > 0 && !IsBlocked(new Rectangle(x - 1, y, 1, 1), blockedModules))
{
qrCode.ModuleMatrix[y][x - 1] = datawords.Dequeue();
}
}
}
up = !up;
}
}
public static void ReserveSeperatorAreas(int size, ref List<Rectangle> blockedModules)
{
blockedModules.AddRange(new[]{
new Rectangle(7, 0, 1, 8),
new Rectangle(0, 7, 7, 1),
new Rectangle(0, size-8, 8, 1),
new Rectangle(7, size-7, 1, 7),
new Rectangle(size-8, 0, 1, 8),
new Rectangle(size-7, 7, 7, 1)
});
}
public static void ReserveVersionAreas(int size, int version, ref List<Rectangle> blockedModules)
{
blockedModules.AddRange(new[]{
new Rectangle(8, 0, 1, 6),
new Rectangle(8, 7, 1, 1),
new Rectangle(0, 8, 6, 1),
new Rectangle(7, 8, 2, 1),
new Rectangle(size-8, 8, 8, 1),
new Rectangle(8, size-7, 1, 7)
});
if (version >= 7)
{
blockedModules.AddRange(new[]{
new Rectangle(size-11, 0, 3, 6),
new Rectangle(0, size-11, 6, 3)
});
}
}
public static void PlaceDarkModule(ref QRCodeData qrCode, int version, ref List<Rectangle> blockedModules)
{
qrCode.ModuleMatrix[4 * version + 9][8] = true;
blockedModules.Add(new Rectangle(8, 4 * version + 9, 1, 1));
}
public static void PlaceFinderPatterns(ref QRCodeData qrCode, ref List<Rectangle> blockedModules)
{
var size = qrCode.ModuleMatrix.Count;
int[] locations = { 0, 0, size - 7, 0, 0, size - 7 };
for (var i = 0; i < 6; i = i + 2)
{
for (var x = 0; x < 7; x++)
{
for (var y = 0; y < 7; y++)
{
if (!(((x == 1 || x == 5) && y > 0 && y < 6) || (x > 0 && x < 6 && (y == 1 || y == 5))))
{
qrCode.ModuleMatrix[y + locations[i + 1]][x + locations[i]] = true;
}
}
}
blockedModules.Add(new Rectangle(locations[i], locations[i + 1], 7, 7));
}
}
public static void PlaceAlignmentPatterns(ref QRCodeData qrCode, List<Point> alignmentPatternLocations, ref List<Rectangle> blockedModules)
{
foreach (var loc in alignmentPatternLocations)
{
var alignmentPatternRect = new Rectangle(loc.X, loc.Y, 5, 5);
var blocked = false;
foreach (var blockedRect in blockedModules)
{
if (Intersects(alignmentPatternRect, blockedRect))
{
blocked = true;
break;
}
}
if (blocked)
{
continue;
}
for (var x = 0; x < 5; x++)
{
for (var y = 0; y < 5; y++)
{
if (y == 0 || y == 4 || x == 0 || x == 4 || (x == 2 && y == 2))
{
qrCode.ModuleMatrix[loc.Y + y][loc.X + x] = true;
}
}
}
blockedModules.Add(new Rectangle(loc.X, loc.Y, 5, 5));
}
}
public static void PlaceTimingPatterns(ref QRCodeData qrCode, ref List<Rectangle> blockedModules)
{
var size = qrCode.ModuleMatrix.Count;
for (var i = 8; i < size - 8; i++)
{
if (i % 2 == 0)
{
qrCode.ModuleMatrix[6][i] = true;
qrCode.ModuleMatrix[i][6] = true;
}
}
blockedModules.AddRange(new[]{
new Rectangle(6, 8, 1, size-16),
new Rectangle(8, 6, size-16, 1)
});
}
private static bool Intersects(Rectangle r1, Rectangle r2)
{
return r2.X < r1.X + r1.Width && r1.X < r2.X + r2.Width && r2.Y < r1.Y + r1.Height && r1.Y < r2.Y + r2.Height;
}
private static bool IsBlocked(Rectangle r1, List<Rectangle> blockedModules)
{
var isBlocked = false;
foreach (var blockedMod in blockedModules)
{
if (Intersects(blockedMod, r1))
{
isBlocked = true;
}
}
return isBlocked;
}
private static class MaskPattern
{
// NOTE: Methods are invoked via reflection (typeof(MaskPattern).GetMethods()))
public static bool Pattern1(int x, int y)
{
return (x + y) % 2 == 0;
}
public static bool Pattern2(int x, int y)
{
return y % 2 == 0;
}
public static bool Pattern3(int x, int y)
{
return x % 3 == 0;
}
public static bool Pattern4(int x, int y)
{
return (x + y) % 3 == 0;
}
public static bool Pattern5(int x, int y)
{
return ((int)(Math.Floor(y / 2d) + Math.Floor(x / 3d)) % 2) == 0;
}
public static bool Pattern6(int x, int y)
{
return ((x * y) % 2) + ((x * y) % 3) == 0;
}
public static bool Pattern7(int x, int y)
{
return (((x * y) % 2) + ((x * y) % 3)) % 2 == 0;
}
public static bool Pattern8(int x, int y)
{
return (((x + y) % 2) + ((x * y) % 3)) % 2 == 0;
}
public static int Score(ref QRCodeData qrCode)
{
int score1 = 0,
score2 = 0,
score3 = 0;
var size = qrCode.ModuleMatrix.Count;
//Penalty 1
for (var y = 0; y < size; y++)
{
var modInRow = 0;
var modInColumn = 0;
var lastValRow = qrCode.ModuleMatrix[y][0];
var lastValColumn = qrCode.ModuleMatrix[0][y];
for (var x = 0; x < size; x++)
{
if (qrCode.ModuleMatrix[y][x] == lastValRow)
{
modInRow++;
}
else
{
modInRow = 1;
}
if (modInRow == 5)
{
score1 += 3;
}
else if (modInRow > 5)
{
score1++;
}
lastValRow = qrCode.ModuleMatrix[y][x];
if (qrCode.ModuleMatrix[x][y] == lastValColumn)
{
modInColumn++;
}
else
{
modInColumn = 1;
}
if (modInColumn == 5)
{
score1 += 3;
}
else if (modInColumn > 5)
{
score1++;
}
lastValColumn = qrCode.ModuleMatrix[x][y];
}
}
//Penalty 2
for (var y = 0; y < size - 1; y++)
{
for (var x = 0; x < size - 1; x++)
{
if (qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y][x + 1] &&
qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y + 1][x] &&
qrCode.ModuleMatrix[y][x] == qrCode.ModuleMatrix[y + 1][x + 1])
{
score2 += 3;
}
}
}
//Penalty 3
for (var y = 0; y < size; y++)
{
for (var x = 0; x < size - 10; x++)
{
if ((qrCode.ModuleMatrix[y][x] &&
!qrCode.ModuleMatrix[y][x + 1] &&
qrCode.ModuleMatrix[y][x + 2] &&
qrCode.ModuleMatrix[y][x + 3] &&
qrCode.ModuleMatrix[y][x + 4] &&
!qrCode.ModuleMatrix[y][x + 5] &&
qrCode.ModuleMatrix[y][x + 6] &&
!qrCode.ModuleMatrix[y][x + 7] &&
!qrCode.ModuleMatrix[y][x + 8] &&
!qrCode.ModuleMatrix[y][x + 9] &&
!qrCode.ModuleMatrix[y][x + 10]) ||
(!qrCode.ModuleMatrix[y][x] &&
!qrCode.ModuleMatrix[y][x + 1] &&
!qrCode.ModuleMatrix[y][x + 2] &&
!qrCode.ModuleMatrix[y][x + 3] &&
qrCode.ModuleMatrix[y][x + 4] &&
!qrCode.ModuleMatrix[y][x + 5] &&
qrCode.ModuleMatrix[y][x + 6] &&
qrCode.ModuleMatrix[y][x + 7] &&
qrCode.ModuleMatrix[y][x + 8] &&
!qrCode.ModuleMatrix[y][x + 9] &&
qrCode.ModuleMatrix[y][x + 10]))
{
score3 += 40;
}
if ((qrCode.ModuleMatrix[x][y] &&
!qrCode.ModuleMatrix[x + 1][y] &&
qrCode.ModuleMatrix[x + 2][y] &&
qrCode.ModuleMatrix[x + 3][y] &&
qrCode.ModuleMatrix[x + 4][y] &&
!qrCode.ModuleMatrix[x + 5][y] &&
qrCode.ModuleMatrix[x + 6][y] &&
!qrCode.ModuleMatrix[x + 7][y] &&
!qrCode.ModuleMatrix[x + 8][y] &&
!qrCode.ModuleMatrix[x + 9][y] &&
!qrCode.ModuleMatrix[x + 10][y]) ||
(!qrCode.ModuleMatrix[x][y] &&
!qrCode.ModuleMatrix[x + 1][y] &&
!qrCode.ModuleMatrix[x + 2][y] &&
!qrCode.ModuleMatrix[x + 3][y] &&
qrCode.ModuleMatrix[x + 4][y] &&
!qrCode.ModuleMatrix[x + 5][y] &&
qrCode.ModuleMatrix[x + 6][y] &&
qrCode.ModuleMatrix[x + 7][y] &&
qrCode.ModuleMatrix[x + 8][y] &&
!qrCode.ModuleMatrix[x + 9][y] &&
qrCode.ModuleMatrix[x + 10][y]))
{
score3 += 40;
}
}
}
//Penalty 4
double blackModules = 0;
foreach (var row in qrCode.ModuleMatrix)
{
foreach (bool bit in row)
{
if (bit)
{
blackModules++;
}
}
}
var percent = blackModules / (qrCode.ModuleMatrix.Count * qrCode.ModuleMatrix.Count) * 100;
var prevMultipleOf5 = Math.Abs((int)Math.Floor(percent / 5) * 5 - 50) / 5;
var nextMultipleOf5 = Math.Abs((int)Math.Floor(percent / 5) * 5 - 45) / 5;
var score4 = Math.Min(prevMultipleOf5, nextMultipleOf5) * 10;
return score1 + score2 + score3 + score4;
}
}
}
private List<string> CalculateECCWords(string bitString, ErrorCorrectionCodeInfo eccInfo)
{
var eccWords = eccInfo.ECCPerBlock;
var messagePolynom = this.CalculateMessagePolynom(bitString);
var generatorPolynom = this.CalculateGeneratorPolynom(eccWords);
for (var i = 0; i < messagePolynom.PolyItems.Count; i++)
{
messagePolynom.PolyItems[i] = new PolynomItem(messagePolynom.PolyItems[i].Coefficient,
messagePolynom.PolyItems[i].Exponent + eccWords);
}
for (var i = 0; i < generatorPolynom.PolyItems.Count; i++)
{
generatorPolynom.PolyItems[i] = new PolynomItem(generatorPolynom.PolyItems[i].Coefficient,
generatorPolynom.PolyItems[i].Exponent + (messagePolynom.PolyItems.Count - 1));
}
var leadTermSource = messagePolynom;
for (var i = 0; leadTermSource.PolyItems.Count > 0 && leadTermSource.PolyItems[leadTermSource.PolyItems.Count - 1].Exponent > 0; i++)
{
if (leadTermSource.PolyItems[0].Coefficient == 0)
{
leadTermSource.PolyItems.RemoveAt(0);
leadTermSource.PolyItems.Add(new PolynomItem(0, leadTermSource.PolyItems[leadTermSource.PolyItems.Count - 1].Exponent - 1));
}
else
{
var resPoly = this.MultiplyGeneratorPolynomByLeadterm(generatorPolynom, this.ConvertToAlphaNotation(leadTermSource).PolyItems[0], i);
resPoly = this.ConvertToDecNotation(resPoly);
resPoly = this.XORPolynoms(leadTermSource, resPoly);
leadTermSource = resPoly;
}
}
return leadTermSource.PolyItems.Select(x => DecToBin(x.Coefficient, 8)).ToList();
}
private Polynom ConvertToAlphaNotation(Polynom poly)
{
var newPoly = new Polynom();
for (var i = 0; i < poly.PolyItems.Count; i++)
{
newPoly.PolyItems.Add(
new PolynomItem(
poly.PolyItems[i].Coefficient != 0
? this.GetAlphaExpFromIntVal(poly.PolyItems[i].Coefficient)
: 0, poly.PolyItems[i].Exponent));
}
return newPoly;
}
private Polynom ConvertToDecNotation(Polynom poly)
{
var newPoly = new Polynom();
for (var i = 0; i < poly.PolyItems.Count; i++)
{
newPoly.PolyItems.Add(new PolynomItem(this.GetIntValFromAlphaExp(poly.PolyItems[i].Coefficient), poly.PolyItems[i].Exponent));
}
return newPoly;
}
private int GetVersion(int length, EncodingMode encMode, ErrorCorrectionLevel errorCorrectionLevel)
{
return this.capacityTable
.Where(x => x.Details.Any(y => y.ErrorCorrectionLevel == errorCorrectionLevel && y.CapacityDict[encMode] >= Convert.ToInt32(length)))
.Select(x => new
{
version = x.Version,
capacity = x.Details.Single(y => y.ErrorCorrectionLevel == errorCorrectionLevel).CapacityDict[encMode]
}).Min(x => x.version);
}
private EncodingMode GetEncodingFromPlaintext(string plainText, bool forceUtf8)
{
EncodingMode result = EncodingMode.Numeric;
if (forceUtf8)
{
return EncodingMode.Byte;
}
foreach (char c in plainText)
{
if (numTable.Contains(c))
{
continue;
}
result = EncodingMode.Alphanumeric;
if (!alphanumEncTable.Contains(c))
{
return EncodingMode.Byte;
}
}
return result;
}
private Polynom CalculateMessagePolynom(string bitString)
{
var messagePol = new Polynom();
for (var i = bitString.Length / 8 - 1; i >= 0; i--)
{
messagePol.PolyItems.Add(new PolynomItem(this.BinToDec(bitString.Substring(0, 8)), i));
bitString = bitString.Remove(0, 8);
}
return messagePol;
}
private Polynom CalculateGeneratorPolynom(int numEccWords)
{
var generatorPolynom = new Polynom();
generatorPolynom.PolyItems.AddRange(new[]{
new PolynomItem(0,1),
new PolynomItem(0,0)
});
for (var i = 1; i <= numEccWords - 1; i++)
{
var multiplierPolynom = new Polynom();
multiplierPolynom.PolyItems.AddRange(new[]{
new PolynomItem(0,1),
new PolynomItem(i,0)
});
generatorPolynom = this.MultiplyAlphaPolynoms(generatorPolynom, multiplierPolynom);
}
return generatorPolynom;
}
private List<string> BinaryStringToBitBlockList(string bitString)
{
return new List<char>(bitString.ToCharArray()).Select((x, i) => new { Index = i, Value = x })
.GroupBy(x => x.Index / 8)
.Select(x => string.Join("", x.Select(v => v.Value.ToString()).ToArray()))
.ToList();
}
private List<int> BinaryStringListToDecList(List<string> binaryStringList)
{
return binaryStringList.Select(binaryString => this.BinToDec(binaryString)).ToList();
}
private int BinToDec(string binStr)
{
return Convert.ToInt32(binStr, 2);
}
private static string DecToBin(int decNum)
{
return Convert.ToString(decNum, 2);
}
private static string DecToBin(int decNum, int padLeftUpTo)
{
var binStr = DecToBin(decNum);
return binStr.PadLeft(padLeftUpTo, '0');
}
private int GetCountIndicatorLength(int version, EncodingMode encMode)
{
if (version < 10)
{
switch (encMode)
{
case EncodingMode.Numeric:
return 10;
case EncodingMode.Alphanumeric:
return 9;
default:
return 8;
}
}
else if (version < 27)
{
switch (encMode)
{
case EncodingMode.Numeric:
return 12;
case EncodingMode.Alphanumeric:
return 11;
case EncodingMode.Byte:
return 16;
default:
return 10;
}
}
else
{
switch (encMode)
{
case EncodingMode.Numeric:
return 14;
case EncodingMode.Alphanumeric:
return 13;
case EncodingMode.Byte:
return 16;
default:
return 12;
}
}
}
private int GetDataLength(EncodingMode encoding, string plainText, string codedText, bool forceUtf8)
{
return forceUtf8 || this.IsUtf8(encoding, plainText) ? (codedText.Length / 8) : plainText.Length;
}
private bool IsUtf8(EncodingMode encoding, string plainText)
{
return encoding == EncodingMode.Byte && !this.IsValidISO(plainText);
}
private bool IsValidISO(string input)
{
var bytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(input);
var result = Encoding.GetEncoding("ISO-8859-1").GetString(bytes, 0, bytes.Length);
return string.Equals(input, result);
}
private string PlainTextToBinary(string plainText, EncodingMode encMode, EciMode eciMode, bool utf8BOM, bool forceUtf8)
{
switch (encMode)
{
case EncodingMode.Alphanumeric:
return PlainTextToBinaryAlphanumeric(plainText);
case EncodingMode.Numeric:
return PlainTextToBinaryNumeric(plainText);
case EncodingMode.Byte:
return PlainTextToBinaryByte(plainText, eciMode, utf8BOM, forceUtf8);
default: