mirror of https://tt-rss.org/git/tt-rss.git
741 lines
18 KiB
PHP
Executable File
741 lines
18 KiB
PHP
Executable File
<?php
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/**
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* Class QRMatrix
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*
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* @filesource QRMatrix.php
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* @created 15.11.2017
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* @package chillerlan\QRCode\Data
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* @author Smiley <smiley@chillerlan.net>
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* @copyright 2017 Smiley
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* @license MIT
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*/
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namespace chillerlan\QRCode\Data;
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use chillerlan\QRCode\QRCode;
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use Closure;
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use function array_fill, array_key_exists, array_push, array_unshift, count, floor, in_array, max, min, range;
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/**
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* Holds a numerical representation of the final QR Code;
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* maps the ECC coded binary data and applies the mask pattern
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*
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* @see http://www.thonky.com/qr-code-tutorial/format-version-information
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*/
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final class QRMatrix{
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/** @var int */
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public const M_NULL = 0x00;
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/** @var int */
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public const M_DARKMODULE = 0x02;
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/** @var int */
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public const M_DATA = 0x04;
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/** @var int */
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public const M_FINDER = 0x06;
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/** @var int */
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public const M_SEPARATOR = 0x08;
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/** @var int */
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public const M_ALIGNMENT = 0x0a;
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/** @var int */
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public const M_TIMING = 0x0c;
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/** @var int */
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public const M_FORMAT = 0x0e;
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/** @var int */
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public const M_VERSION = 0x10;
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/** @var int */
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public const M_QUIETZONE = 0x12;
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/** @var int */
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public const M_LOGO = 0x14;
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/** @var int */
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public const M_FINDER_DOT = 0x16;
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/** @var int */
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public const M_TEST = 0xff;
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/**
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* ISO/IEC 18004:2000 Annex E, Table E.1 - Row/column coordinates of center module of Alignment Patterns
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*
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* version -> pattern
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*
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* @var int[][]
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*/
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protected const alignmentPattern = [
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1 => [],
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2 => [6, 18],
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3 => [6, 22],
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4 => [6, 26],
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5 => [6, 30],
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6 => [6, 34],
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7 => [6, 22, 38],
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8 => [6, 24, 42],
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9 => [6, 26, 46],
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10 => [6, 28, 50],
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11 => [6, 30, 54],
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12 => [6, 32, 58],
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13 => [6, 34, 62],
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14 => [6, 26, 46, 66],
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15 => [6, 26, 48, 70],
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16 => [6, 26, 50, 74],
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17 => [6, 30, 54, 78],
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18 => [6, 30, 56, 82],
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19 => [6, 30, 58, 86],
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20 => [6, 34, 62, 90],
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21 => [6, 28, 50, 72, 94],
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22 => [6, 26, 50, 74, 98],
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23 => [6, 30, 54, 78, 102],
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24 => [6, 28, 54, 80, 106],
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25 => [6, 32, 58, 84, 110],
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26 => [6, 30, 58, 86, 114],
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27 => [6, 34, 62, 90, 118],
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28 => [6, 26, 50, 74, 98, 122],
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29 => [6, 30, 54, 78, 102, 126],
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30 => [6, 26, 52, 78, 104, 130],
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31 => [6, 30, 56, 82, 108, 134],
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32 => [6, 34, 60, 86, 112, 138],
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33 => [6, 30, 58, 86, 114, 142],
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34 => [6, 34, 62, 90, 118, 146],
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35 => [6, 30, 54, 78, 102, 126, 150],
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36 => [6, 24, 50, 76, 102, 128, 154],
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37 => [6, 28, 54, 80, 106, 132, 158],
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38 => [6, 32, 58, 84, 110, 136, 162],
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39 => [6, 26, 54, 82, 110, 138, 166],
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40 => [6, 30, 58, 86, 114, 142, 170],
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];
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/**
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* ISO/IEC 18004:2000 Annex D, Table D.1 - Version information bit stream for each version
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*
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* no version pattern for QR Codes < 7
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*
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* @var int[]
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*/
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protected const versionPattern = [
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7 => 0b000111110010010100,
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8 => 0b001000010110111100,
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9 => 0b001001101010011001,
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10 => 0b001010010011010011,
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11 => 0b001011101111110110,
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12 => 0b001100011101100010,
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13 => 0b001101100001000111,
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14 => 0b001110011000001101,
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15 => 0b001111100100101000,
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16 => 0b010000101101111000,
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17 => 0b010001010001011101,
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18 => 0b010010101000010111,
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19 => 0b010011010100110010,
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20 => 0b010100100110100110,
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21 => 0b010101011010000011,
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22 => 0b010110100011001001,
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23 => 0b010111011111101100,
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24 => 0b011000111011000100,
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25 => 0b011001000111100001,
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26 => 0b011010111110101011,
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27 => 0b011011000010001110,
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28 => 0b011100110000011010,
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29 => 0b011101001100111111,
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30 => 0b011110110101110101,
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31 => 0b011111001001010000,
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32 => 0b100000100111010101,
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33 => 0b100001011011110000,
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34 => 0b100010100010111010,
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35 => 0b100011011110011111,
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36 => 0b100100101100001011,
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37 => 0b100101010000101110,
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38 => 0b100110101001100100,
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39 => 0b100111010101000001,
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40 => 0b101000110001101001,
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];
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/**
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* ISO/IEC 18004:2000 Section 8.9 - Format Information
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*
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* ECC level -> mask pattern
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*
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* @var int[][]
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*/
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protected const formatPattern = [
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[ // L
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0b111011111000100,
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0b111001011110011,
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0b111110110101010,
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0b111100010011101,
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0b110011000101111,
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0b110001100011000,
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0b110110001000001,
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0b110100101110110,
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],
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[ // M
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0b101010000010010,
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0b101000100100101,
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0b101111001111100,
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0b101101101001011,
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0b100010111111001,
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0b100000011001110,
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0b100111110010111,
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0b100101010100000,
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],
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[ // Q
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0b011010101011111,
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0b011000001101000,
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0b011111100110001,
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0b011101000000110,
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0b010010010110100,
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0b010000110000011,
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0b010111011011010,
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0b010101111101101,
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],
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[ // H
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0b001011010001001,
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0b001001110111110,
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0b001110011100111,
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0b001100111010000,
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0b000011101100010,
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0b000001001010101,
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0b000110100001100,
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0b000100000111011,
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],
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];
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/**
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* the current QR Code version number
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*/
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protected int $version;
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/**
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* the current ECC level
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*/
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protected int $eclevel;
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/**
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* the used mask pattern, set via QRMatrix::mapData()
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*/
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protected int $maskPattern = QRCode::MASK_PATTERN_AUTO;
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/**
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* the size (side length) of the matrix
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*/
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protected int $moduleCount;
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/**
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* the actual matrix data array
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*
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* @var int[][]
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*/
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protected array $matrix;
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/**
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* QRMatrix constructor.
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*
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
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public function __construct(int $version, int $eclevel){
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if(!in_array($version, range(1, 40), true)){
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throw new QRCodeDataException('invalid QR Code version');
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}
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if(!array_key_exists($eclevel, QRCode::ECC_MODES)){
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throw new QRCodeDataException('invalid ecc level');
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}
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$this->version = $version;
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$this->eclevel = $eclevel;
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$this->moduleCount = $this->version * 4 + 17;
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$this->matrix = array_fill(0, $this->moduleCount, array_fill(0, $this->moduleCount, $this::M_NULL));
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}
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/**
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* shortcut to initialize the matrix
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*/
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public function init(int $maskPattern, bool $test = null):QRMatrix{
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return $this
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->setFinderPattern()
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->setSeparators()
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->setAlignmentPattern()
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->setTimingPattern()
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->setVersionNumber($test)
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->setFormatInfo($maskPattern, $test)
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->setDarkModule()
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;
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}
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/**
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* Returns the data matrix, returns a pure boolean representation if $boolean is set to true
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*
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* @return int[][]|bool[][]
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*/
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public function matrix(bool $boolean = false):array{
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if(!$boolean){
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return $this->matrix;
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}
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$matrix = [];
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foreach($this->matrix as $y => $row){
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$matrix[$y] = [];
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foreach($row as $x => $val){
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$matrix[$y][$x] = ($val >> 8) > 0;
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}
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}
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return $matrix;
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}
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/**
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* Returns the current version number
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*/
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public function version():int{
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return $this->version;
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}
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/**
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* Returns the current ECC level
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*/
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public function eccLevel():int{
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return $this->eclevel;
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}
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/**
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* Returns the current mask pattern
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*/
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public function maskPattern():int{
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return $this->maskPattern;
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}
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/**
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* Returns the absoulute size of the matrix, including quiet zone (after setting it).
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*
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* size = version * 4 + 17 [ + 2 * quietzone size]
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*/
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public function size():int{
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return $this->moduleCount;
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}
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/**
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* Returns the value of the module at position [$x, $y]
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*/
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public function get(int $x, int $y):int{
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return $this->matrix[$y][$x];
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}
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/**
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* Sets the $M_TYPE value for the module at position [$x, $y]
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*
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* true => $M_TYPE << 8
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* false => $M_TYPE
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*/
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public function set(int $x, int $y, bool $value, int $M_TYPE):QRMatrix{
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$this->matrix[$y][$x] = $M_TYPE << ($value ? 8 : 0);
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return $this;
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}
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/**
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* Checks whether a module is true (dark) or false (light)
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*
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* true => $value >> 8 === $M_TYPE
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* $value >> 8 > 0
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*
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* false => $value === $M_TYPE
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* $value >> 8 === 0
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*/
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public function check(int $x, int $y):bool{
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return ($this->matrix[$y][$x] >> 8) > 0;
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}
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/**
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* Sets the "dark module", that is always on the same position 1x1px away from the bottom left finder
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*/
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public function setDarkModule():QRMatrix{
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$this->set(8, 4 * $this->version + 9, true, $this::M_DARKMODULE);
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return $this;
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}
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/**
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* Draws the 7x7 finder patterns in the corners top left/right and bottom left
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*
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* ISO/IEC 18004:2000 Section 7.3.2
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*/
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public function setFinderPattern():QRMatrix{
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$pos = [
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[0, 0], // top left
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[$this->moduleCount - 7, 0], // bottom left
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[0, $this->moduleCount - 7], // top right
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];
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foreach($pos as $c){
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for($y = 0; $y < 7; $y++){
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for($x = 0; $x < 7; $x++){
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// outer (dark) 7*7 square
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if($x === 0 || $x === 6 || $y === 0 || $y === 6){
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$this->set($c[0] + $y, $c[1] + $x, true, $this::M_FINDER);
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}
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// inner (light) 5*5 square
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elseif($x === 1 || $x === 5 || $y === 1 || $y === 5){
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$this->set($c[0] + $y, $c[1] + $x, false, $this::M_FINDER);
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}
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// 3*3 dot
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else{
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$this->set($c[0] + $y, $c[1] + $x, true, $this::M_FINDER_DOT);
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}
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}
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}
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}
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return $this;
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}
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/**
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* Draws the separator lines around the finder patterns
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*
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* ISO/IEC 18004:2000 Section 7.3.3
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*/
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public function setSeparators():QRMatrix{
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$h = [
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[7, 0],
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[$this->moduleCount - 8, 0],
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[7, $this->moduleCount - 8],
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];
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$v = [
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[7, 7],
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[$this->moduleCount - 1, 7],
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[7, $this->moduleCount - 8],
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];
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for($c = 0; $c < 3; $c++){
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for($i = 0; $i < 8; $i++){
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$this->set($h[$c][0] , $h[$c][1] + $i, false, $this::M_SEPARATOR);
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$this->set($v[$c][0] - $i, $v[$c][1] , false, $this::M_SEPARATOR);
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}
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}
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return $this;
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}
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/**
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* Draws the 5x5 alignment patterns
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*
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* ISO/IEC 18004:2000 Section 7.3.5
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*/
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public function setAlignmentPattern():QRMatrix{
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foreach($this::alignmentPattern[$this->version] as $y){
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foreach($this::alignmentPattern[$this->version] as $x){
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// skip existing patterns
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if($this->matrix[$y][$x] !== $this::M_NULL){
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continue;
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}
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for($ry = -2; $ry <= 2; $ry++){
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for($rx = -2; $rx <= 2; $rx++){
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$v = ($ry === 0 && $rx === 0) || $ry === 2 || $ry === -2 || $rx === 2 || $rx === -2;
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$this->set($x + $rx, $y + $ry, $v, $this::M_ALIGNMENT);
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}
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}
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}
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}
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return $this;
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}
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/**
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* Draws the timing pattern (h/v checkered line between the finder patterns)
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*
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* ISO/IEC 18004:2000 Section 7.3.4
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*/
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public function setTimingPattern():QRMatrix{
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foreach(range(8, $this->moduleCount - 8 - 1) as $i){
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if($this->matrix[6][$i] !== $this::M_NULL || $this->matrix[$i][6] !== $this::M_NULL){
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continue;
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}
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$v = $i % 2 === 0;
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$this->set($i, 6, $v, $this::M_TIMING); // h
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$this->set(6, $i, $v, $this::M_TIMING); // v
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}
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return $this;
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}
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/**
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* Draws the version information, 2x 3x6 pixel
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*
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* ISO/IEC 18004:2000 Section 8.10
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*/
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public function setVersionNumber(bool $test = null):QRMatrix{
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$bits = $this::versionPattern[$this->version] ?? false;
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if($bits !== false){
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for($i = 0; $i < 18; $i++){
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$a = (int)floor($i / 3);
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$b = $i % 3 + $this->moduleCount - 8 - 3;
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$v = !$test && (($bits >> $i) & 1) === 1;
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$this->set($b, $a, $v, $this::M_VERSION); // ne
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$this->set($a, $b, $v, $this::M_VERSION); // sw
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}
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}
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return $this;
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}
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/**
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* Draws the format info along the finder patterns
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*
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* ISO/IEC 18004:2000 Section 8.9
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*/
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public function setFormatInfo(int $maskPattern, bool $test = null):QRMatrix{
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$bits = $this::formatPattern[QRCode::ECC_MODES[$this->eclevel]][$maskPattern] ?? 0;
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for($i = 0; $i < 15; $i++){
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$v = !$test && (($bits >> $i) & 1) === 1;
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if($i < 6){
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$this->set(8, $i, $v, $this::M_FORMAT);
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}
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elseif($i < 8){
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$this->set(8, $i + 1, $v, $this::M_FORMAT);
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}
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else{
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$this->set(8, $this->moduleCount - 15 + $i, $v, $this::M_FORMAT);
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}
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if($i < 8){
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$this->set($this->moduleCount - $i - 1, 8, $v, $this::M_FORMAT);
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}
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elseif($i < 9){
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$this->set(15 - $i, 8, $v, $this::M_FORMAT);
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}
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else{
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$this->set(15 - $i - 1, 8, $v, $this::M_FORMAT);
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}
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}
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$this->set(8, $this->moduleCount - 8, !$test, $this::M_FORMAT);
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return $this;
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}
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/**
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* Draws the "quiet zone" of $size around the matrix
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*
|
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* ISO/IEC 18004:2000 Section 7.3.7
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*
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
|
|
public function setQuietZone(int $size = null):QRMatrix{
|
|
|
|
if($this->matrix[$this->moduleCount - 1][$this->moduleCount - 1] === $this::M_NULL){
|
|
throw new QRCodeDataException('use only after writing data');
|
|
}
|
|
|
|
$size = $size !== null
|
|
? max(0, min($size, floor($this->moduleCount / 2)))
|
|
: 4;
|
|
|
|
for($y = 0; $y < $this->moduleCount; $y++){
|
|
for($i = 0; $i < $size; $i++){
|
|
array_unshift($this->matrix[$y], $this::M_QUIETZONE);
|
|
array_push($this->matrix[$y], $this::M_QUIETZONE);
|
|
}
|
|
}
|
|
|
|
$this->moduleCount += ($size * 2);
|
|
|
|
$r = array_fill(0, $this->moduleCount, $this::M_QUIETZONE);
|
|
|
|
for($i = 0; $i < $size; $i++){
|
|
array_unshift($this->matrix, $r);
|
|
array_push($this->matrix, $r);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Clears a space of $width * $height in order to add a logo or text.
|
|
*
|
|
* Additionally, the logo space can be positioned within the QR Code - respecting the main functional patterns -
|
|
* using $startX and $startY. If either of these are null, the logo space will be centered in that direction.
|
|
* ECC level "H" (30%) is required.
|
|
*
|
|
* Please note that adding a logo space minimizes the error correction capacity of the QR Code and
|
|
* created images may become unreadable, especially when printed with a chance to receive damage.
|
|
* Please test thoroughly before using this feature in production.
|
|
*
|
|
* This method should be called from within an output module (after the matrix has been filled with data).
|
|
* Note that there is no restiction on how many times this method could be called on the same matrix instance.
|
|
*
|
|
* @link https://github.com/chillerlan/php-qrcode/issues/52
|
|
*
|
|
* @throws \chillerlan\QRCode\Data\QRCodeDataException
|
|
*/
|
|
public function setLogoSpace(int $width, int $height, int $startX = null, int $startY = null):QRMatrix{
|
|
|
|
// for logos we operate in ECC H (30%) only
|
|
if($this->eclevel !== QRCode::ECC_H){
|
|
throw new QRCodeDataException('ECC level "H" required to add logo space');
|
|
}
|
|
|
|
// we need uneven sizes to center the logo space, adjust if needed
|
|
if($startX === null && ($width % 2) === 0){
|
|
$width++;
|
|
}
|
|
|
|
if($startY === null && ($height % 2) === 0){
|
|
$height++;
|
|
}
|
|
|
|
// $this->moduleCount includes the quiet zone (if created), we need the QR size here
|
|
$length = $this->version * 4 + 17;
|
|
|
|
// throw if the logo space exceeds the maximum error correction capacity
|
|
if($width * $height > floor($length * $length * 0.2)){
|
|
throw new QRCodeDataException('logo space exceeds the maximum error correction capacity');
|
|
}
|
|
|
|
// quiet zone size
|
|
$qz = ($this->moduleCount - $length) / 2;
|
|
// skip quiet zone and the first 9 rows/columns (finder-, mode-, version- and timing patterns)
|
|
$start = $qz + 9;
|
|
// skip quiet zone
|
|
$end = $this->moduleCount - $qz;
|
|
|
|
// determine start coordinates
|
|
$startX = ($startX !== null ? $startX : ($length - $width) / 2) + $qz;
|
|
$startY = ($startY !== null ? $startY : ($length - $height) / 2) + $qz;
|
|
|
|
// clear the space
|
|
foreach($this->matrix as $y => $row){
|
|
foreach($row as $x => $val){
|
|
// out of bounds, skip
|
|
if($x < $start || $y < $start ||$x >= $end || $y >= $end){
|
|
continue;
|
|
}
|
|
// a match
|
|
if($x >= $startX && $x < ($startX + $width) && $y >= $startY && $y < ($startY + $height)){
|
|
$this->set($x, $y, false, $this::M_LOGO);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Maps the binary $data array from QRDataInterface::maskECC() on the matrix,
|
|
* masking the data using $maskPattern (ISO/IEC 18004:2000 Section 8.8)
|
|
*
|
|
* @see \chillerlan\QRCode\Data\QRDataAbstract::maskECC()
|
|
*
|
|
* @param int[] $data
|
|
* @param int $maskPattern
|
|
*
|
|
* @return \chillerlan\QRCode\Data\QRMatrix
|
|
*/
|
|
public function mapData(array $data, int $maskPattern):QRMatrix{
|
|
$this->maskPattern = $maskPattern;
|
|
$byteCount = count($data);
|
|
$y = $this->moduleCount - 1;
|
|
$inc = -1;
|
|
$byteIndex = 0;
|
|
$bitIndex = 7;
|
|
$mask = $this->getMask($this->maskPattern);
|
|
|
|
for($i = $y; $i > 0; $i -= 2){
|
|
|
|
if($i === 6){
|
|
$i--;
|
|
}
|
|
|
|
while(true){
|
|
for($c = 0; $c < 2; $c++){
|
|
$x = $i - $c;
|
|
|
|
if($this->matrix[$y][$x] === $this::M_NULL){
|
|
$v = false;
|
|
|
|
if($byteIndex < $byteCount){
|
|
$v = (($data[$byteIndex] >> $bitIndex) & 1) === 1;
|
|
}
|
|
|
|
if($mask($x, $y) === 0){
|
|
$v = !$v;
|
|
}
|
|
|
|
$this->matrix[$y][$x] = $this::M_DATA << ($v ? 8 : 0);
|
|
$bitIndex--;
|
|
|
|
if($bitIndex === -1){
|
|
$byteIndex++;
|
|
$bitIndex = 7;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
$y += $inc;
|
|
|
|
if($y < 0 || $this->moduleCount <= $y){
|
|
$y -= $inc;
|
|
$inc = -$inc;
|
|
|
|
break;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* ISO/IEC 18004:2000 Section 8.8.1
|
|
*
|
|
* Note that some versions of the QR code standard have had errors in the section about mask patterns.
|
|
* The information below has been corrected. (https://www.thonky.com/qr-code-tutorial/mask-patterns)
|
|
*
|
|
* @see \chillerlan\QRCode\QRMatrix::mapData()
|
|
*
|
|
* @internal
|
|
*
|
|
* @throws \chillerlan\QRCode\Data\QRCodeDataException
|
|
*/
|
|
protected function getMask(int $maskPattern):Closure{
|
|
|
|
if((0b111 & $maskPattern) !== $maskPattern){
|
|
throw new QRCodeDataException('invalid mask pattern'); // @codeCoverageIgnore
|
|
}
|
|
|
|
return [
|
|
0b000 => fn($x, $y):int => ($x + $y) % 2,
|
|
0b001 => fn($x, $y):int => $y % 2,
|
|
0b010 => fn($x, $y):int => $x % 3,
|
|
0b011 => fn($x, $y):int => ($x + $y) % 3,
|
|
0b100 => fn($x, $y):int => ((int)($y / 2) + (int)($x / 3)) % 2,
|
|
0b101 => fn($x, $y):int => (($x * $y) % 2) + (($x * $y) % 3),
|
|
0b110 => fn($x, $y):int => ((($x * $y) % 2) + (($x * $y) % 3)) % 2,
|
|
0b111 => fn($x, $y):int => ((($x * $y) % 3) + (($x + $y) % 2)) % 2,
|
|
][$maskPattern];
|
|
}
|
|
|
|
}
|