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+<?php
+//============================================================+
+// File name : qrcode.php
+// Begin : 2010-03-22
+// Last Update : 2010-03-29
+// Version : 1.0.002
+// License : GNU LGPL v.3 (http://www.gnu.org/copyleft/lesser.html)
+// ----------------------------------------------------------------------------
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+// or browse http://www.gnu.org/copyleft/lesser.html
+//
+// ----------------------------------------------------------------------------
+//
+// DESCRIPTION :
+//
+// Class to create QR-code arrays for TCPDF class.
+// QR Code symbol is a 2D barcode that can be scanned by
+// handy terminals such as a mobile phone with CCD.
+// The capacity of QR Code is up to 7000 digits or 4000
+// characters, and has high robustness.
+// This class supports QR Code model 2, described in
+// JIS (Japanese Industrial Standards) X0510:2004
+// or ISO/IEC 18004.
+// Currently the following features are not supported:
+// ECI and FNC1 mode, Micro QR Code, QR Code model 1,
+// Structured mode.
+//
+// This class is derived from the following projects:
+// ---------------------------------------------------------
+// "PHP QR Code encoder"
+// License: GNU-LGPLv3
+// Copyright (C) 2010 by Dominik Dzienia <deltalab at poczta dot fm>
+// http://phpqrcode.sourceforge.net/
+// https://sourceforge.net/projects/phpqrcode/
+//
+// The "PHP QR Code encoder" is based on
+// "C libqrencode library" (ver. 3.1.1)
+// License: GNU-LGPL 2.1
+// Copyright (C) 2006-2010 by Kentaro Fukuchi
+// http://megaui.net/fukuchi/works/qrencode/index.en.html
+//
+// Reed-Solomon code encoder is written by Phil Karn, KA9Q.
+// Copyright (C) 2002-2006 Phil Karn, KA9Q
+//
+// QR Code is registered trademark of DENSO WAVE INCORPORATED
+// http://www.denso-wave.com/qrcode/index-e.html
+// ---------------------------------------------------------
+//
+// Author: Nicola Asuni
+//
+// (c) Copyright 2010:
+// Nicola Asuni
+// Tecnick.com S.r.l.
+// Via della Pace, 11
+// 09044 Quartucciu (CA)
+// ITALY
+// www.tecnick.com
+// [email protected]
+//============================================================+
+
+/**
+ * Class to create QR-code arrays for TCPDF class.
+ * QR Code symbol is a 2D barcode that can be scanned by handy terminals such as a mobile phone with CCD.
+ * The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.
+ * This class supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004.
+ * Currently the following features are not supported: ECI and FNC1 mode, Micro QR Code, QR Code model 1, Structured mode.
+ *
+ * This class is derived from "PHP QR Code encoder" by Dominik Dzienia (http://phpqrcode.sourceforge.net/) based on "libqrencode C library 3.1.1." by Kentaro Fukuchi (http://megaui.net/fukuchi/works/qrencode/index.en.html), contains Reed-Solomon code written by Phil Karn, KA9Q. QR Code is registered trademark of DENSO WAVE INCORPORATED (http://www.denso-wave.com/qrcode/index-e.html).
+ * Please read comments on this class source file for full copyright and license information.
+ *
+ * @package com.tecnick.tcpdf
+ * @abstract Class for generating QR-code array for TCPDF.
+ * @author Nicola Asuni
+ * @copyright 2010 Nicola Asuni - Tecnick.com S.r.l (www.tecnick.com) Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - [email protected]
+ * @link http://www.tcpdf.org
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL
+ * @version 1.0.002
+ */
+
+// definitions
+if (!defined('QRCODEDEFS')) {
+
+ /**
+ * Indicate that definitions for this class are set
+ */
+ define('QRCODEDEFS', true);
+
+ // -----------------------------------------------------
+
+ // Encoding modes (characters which can be encoded in QRcode)
+
+ /**
+ * Encoding mode
+ */
+ define('QR_MODE_NL', -1);
+
+ /**
+ * Encoding mode numeric (0-9). 3 characters are encoded to 10bit length. In theory, 7089 characters or less can be stored in a QRcode.
+ */
+ define('QR_MODE_NM', 0);
+
+ /**
+ * Encoding mode alphanumeric (0-9A-Z $%*+-./:) 45characters. 2 characters are encoded to 11bit length. In theory, 4296 characters or less can be stored in a QRcode.
+ */
+ define('QR_MODE_AN', 1);
+
+ /**
+ * Encoding mode 8bit byte data. In theory, 2953 characters or less can be stored in a QRcode.
+ */
+ define('QR_MODE_8B', 2);
+
+ /**
+ * Encoding mode KANJI. A KANJI character (multibyte character) is encoded to 13bit length. In theory, 1817 characters or less can be stored in a QRcode.
+ */
+ define('QR_MODE_KJ', 3);
+
+ /**
+ * Encoding mode STRUCTURED (currently unsupported)
+ */
+ define('QR_MODE_ST', 4);
+
+ // -----------------------------------------------------
+
+ // Levels of error correction.
+ // QRcode has a function of an error correcting for miss reading that white is black.
+ // Error correcting is defined in 4 level as below.
+
+ /**
+ * Error correction level L : About 7% or less errors can be corrected.
+ */
+ define('QR_ECLEVEL_L', 0);
+
+ /**
+ * Error correction level M : About 15% or less errors can be corrected.
+ */
+ define('QR_ECLEVEL_M', 1);
+
+ /**
+ * Error correction level Q : About 25% or less errors can be corrected.
+ */
+ define('QR_ECLEVEL_Q', 2);
+
+ /**
+ * Error correction level H : About 30% or less errors can be corrected.
+ */
+ define('QR_ECLEVEL_H', 3);
+
+ // -----------------------------------------------------
+
+ // Version. Size of QRcode is defined as version.
+ // Version is from 1 to 40.
+ // Version 1 is 21*21 matrix. And 4 modules increases whenever 1 version increases.
+ // So version 40 is 177*177 matrix.
+
+ /**
+ * Maximum QR Code version.
+ */
+ define('QRSPEC_VERSION_MAX', 40);
+
+ /**
+ * Maximum matrix size for maximum version (version 40 is 177*177 matrix).
+ */
+ define('QRSPEC_WIDTH_MAX', 177);
+
+ // -----------------------------------------------------
+
+ /**
+ * Matrix index to get width from $capacity array.
+ */
+ define('QRCAP_WIDTH', 0);
+
+ /**
+ * Matrix index to get number of words from $capacity array.
+ */
+ define('QRCAP_WORDS', 1);
+
+ /**
+ * Matrix index to get remainder from $capacity array.
+ */
+ define('QRCAP_REMINDER', 2);
+
+ /**
+ * Matrix index to get error correction level from $capacity array.
+ */
+ define('QRCAP_EC', 3);
+
+ // -----------------------------------------------------
+
+ // Structure (currently usupported)
+
+ /**
+ * Number of header bits for structured mode
+ */
+ define('STRUCTURE_HEADER_BITS', 20);
+
+ /**
+ * Max number of symbols for structured mode
+ */
+ define('MAX_STRUCTURED_SYMBOLS', 16);
+
+ // -----------------------------------------------------
+
+ // Masks
+
+ /**
+ * Down point base value for case 1 mask pattern (concatenation of same color in a line or a column)
+ */
+ define('N1', 3);
+
+ /**
+ * Down point base value for case 2 mask pattern (module block of same color)
+ */
+ define('N2', 3);
+
+ /**
+ * Down point base value for case 3 mask pattern (1:1:3:1:1(dark:bright:dark:bright:dark)pattern in a line or a column)
+ */
+ define('N3', 40);
+
+ /**
+ * Down point base value for case 4 mask pattern (ration of dark modules in whole)
+ */
+ define('N4', 10);
+
+ // -----------------------------------------------------
+
+ // Optimization settings
+
+ /**
+ * if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
+ */
+ define('QR_FIND_BEST_MASK', true);
+
+ /**
+ * if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
+ */
+ define('QR_FIND_FROM_RANDOM', 2);
+
+ /**
+ * when QR_FIND_BEST_MASK === false
+ */
+ define('QR_DEFAULT_MASK', 2);
+
+ // -----------------------------------------------------
+
+} // end of definitions
+
+// #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
+
+if (!class_exists('QRcode', false)) {
+
+ // for compaibility with PHP4
+ if (!function_exists('str_split')) {
+ /**
+ * Convert a string to an array (needed for PHP4 compatibility)
+ * @param string $string The input string.
+ * @param int $split_length Maximum length of the chunk.
+ * @return If the optional split_length parameter is specified, the returned array will be broken down into chunks with each being split_length in length, otherwise each chunk will be one character in length. FALSE is returned if split_length is less than 1. If the split_length length exceeds the length of string , the entire string is returned as the first (and only) array element.
+ */
+ function str_split($string, $split_length=1) {
+ if ((strlen($string) > $split_length) OR (!$split_length)) {
+ do {
+ $c = strlen($string);
+ $parts[] = substr($string, 0, $split_length);
+ $string = substr($string, $split_length);
+ } while ($string !== false);
+ } else {
+ $parts = array($string);
+ }
+ return $parts;
+ }
+ }
+
+ // #####################################################
+
+ /**
+ * Class to create QR-code arrays for TCPDF class.
+ * QR Code symbol is a 2D barcode that can be scanned by handy terminals such as a mobile phone with CCD.
+ * The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.
+ * This class supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004.
+ * Currently the following features are not supported: ECI and FNC1 mode, Micro QR Code, QR Code model 1, Structured mode.
+ *
+ * This class is derived from "PHP QR Code encoder" by Dominik Dzienia (http://phpqrcode.sourceforge.net/) based on "libqrencode C library 3.1.1." by Kentaro Fukuchi (http://megaui.net/fukuchi/works/qrencode/index.en.html), contains Reed-Solomon code written by Phil Karn, KA9Q. QR Code is registered trademark of DENSO WAVE INCORPORATED (http://www.denso-wave.com/qrcode/index-e.html).
+ * Please read comments on this class source file for full copyright and license information.
+ *
+ * @name QRcode
+ * @package com.tecnick.tcpdf
+ * @abstract Class for generating QR-code array for TCPDF.
+ * @author Nicola Asuni
+ * @copyright 2010 Nicola Asuni - Tecnick.com S.r.l (www.tecnick.com) Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - [email protected]
+ * @link http://www.tcpdf.org
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL
+ * @version 1.0.002
+ */
+ class QRcode {
+
+ /**
+ * @var barcode array to be returned which is readable by TCPDF
+ * @access protected
+ */
+ protected $barcode_array = array();
+
+ /**
+ * @var QR code version. Size of QRcode is defined as version. Version is from 1 to 40. Version 1 is 21*21 matrix. And 4 modules increases whenever 1 version increases. So version 40 is 177*177 matrix.
+ * @access protected
+ */
+ protected $version = 0;
+
+ /**
+ * @var Levels of error correction. See definitions for possible values.
+ * @access protected
+ */
+ protected $level = QR_ECLEVEL_L;
+
+ /**
+ * @var Encoding mode
+ * @access protected
+ */
+ protected $hint = QR_MODE_8B;
+
+ /**
+ * @var if true the input string will be converted to uppercase
+ * @access protected
+ */
+ protected $casesensitive = true;
+
+ /**
+ * @var structured QR code (not supported yet)
+ * @access protected
+ */
+ protected $structured = 0;
+
+ /**
+ * @var mask data
+ * @access protected
+ */
+ protected $data;
+
+ // FrameFiller
+
+ /**
+ * @var width
+ * @access protected
+ */
+ protected $width;
+
+ /**
+ * @var frame
+ * @access protected
+ */
+ protected $frame;
+
+ /**
+ * @var X position of bit
+ * @access protected
+ */
+ protected $x;
+
+ /**
+ * @var Y position of bit
+ * @access protected
+ */
+ protected $y;
+
+ /**
+ * @var direction
+ * @access protected
+ */
+ protected $dir;
+
+ /**
+ * @var single bit
+ * @access protected
+ */
+ protected $bit;
+
+ // ---- QRrawcode ----
+
+ /**
+ * @var data code
+ * @access protected
+ */
+ protected $datacode = array();
+
+ /**
+ * @var error correction code
+ * @access protected
+ */
+ protected $ecccode = array();
+
+ /**
+ * @var blocks
+ * @access protected
+ */
+ protected $blocks;
+
+ /**
+ * @var Reed-Solomon blocks
+ * @access protected
+ */
+ protected $rsblocks = array(); //of RSblock
+
+ /**
+ * @var counter
+ * @access protected
+ */
+ protected $count;
+
+ /**
+ * @var data length
+ * @access protected
+ */
+ protected $dataLength;
+
+ /**
+ * @var error correction length
+ * @access protected
+ */
+ protected $eccLength;
+
+ /**
+ * @var b1
+ * @access protected
+ */
+ protected $b1;
+
+ // ---- QRmask ----
+
+ /**
+ * @var run length
+ * @access protected
+ */
+ protected $runLength = array();
+
+ // ---- QRsplit ----
+
+ /**
+ * @var input data string
+ * @access protected
+ */
+ protected $dataStr = '';
+
+ /**
+ * @var input items
+ * @access protected
+ */
+ protected $items;
+
+ // Reed-Solomon items
+
+ /**
+ * @var Reed-Solomon items
+ * @access protected
+ */
+ protected $rsitems = array();
+
+ /**
+ * @var array of frames
+ * @access protected
+ */
+ protected $frames = array();
+
+ /**
+ * @var alphabet-numeric convesion table
+ * @access protected
+ */
+ protected $anTable = array(
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
+ 36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43, //
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1, //
+ -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, //
+ 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, //
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 //
+ );
+
+ /**
+ * @var array Table of the capacity of symbols
+ * See Table 1 (pp.13) and Table 12-16 (pp.30-36), JIS X0510:2004.
+ * @access protected
+ */
+ protected $capacity = array(
+ array( 0, 0, 0, array( 0, 0, 0, 0)), //
+ array( 21, 26, 0, array( 7, 10, 13, 17)), // 1
+ array( 25, 44, 7, array( 10, 16, 22, 28)), //
+ array( 29, 70, 7, array( 15, 26, 36, 44)), //
+ array( 33, 100, 7, array( 20, 36, 52, 64)), //
+ array( 37, 134, 7, array( 26, 48, 72, 88)), // 5
+ array( 41, 172, 7, array( 36, 64, 96, 112)), //
+ array( 45, 196, 0, array( 40, 72, 108, 130)), //
+ array( 49, 242, 0, array( 48, 88, 132, 156)), //
+ array( 53, 292, 0, array( 60, 110, 160, 192)), //
+ array( 57, 346, 0, array( 72, 130, 192, 224)), // 10
+ array( 61, 404, 0, array( 80, 150, 224, 264)), //
+ array( 65, 466, 0, array( 96, 176, 260, 308)), //
+ array( 69, 532, 0, array( 104, 198, 288, 352)), //
+ array( 73, 581, 3, array( 120, 216, 320, 384)), //
+ array( 77, 655, 3, array( 132, 240, 360, 432)), // 15
+ array( 81, 733, 3, array( 144, 280, 408, 480)), //
+ array( 85, 815, 3, array( 168, 308, 448, 532)), //
+ array( 89, 901, 3, array( 180, 338, 504, 588)), //
+ array( 93, 991, 3, array( 196, 364, 546, 650)), //
+ array( 97, 1085, 3, array( 224, 416, 600, 700)), // 20
+ array(101, 1156, 4, array( 224, 442, 644, 750)), //
+ array(105, 1258, 4, array( 252, 476, 690, 816)), //
+ array(109, 1364, 4, array( 270, 504, 750, 900)), //
+ array(113, 1474, 4, array( 300, 560, 810, 960)), //
+ array(117, 1588, 4, array( 312, 588, 870, 1050)), // 25
+ array(121, 1706, 4, array( 336, 644, 952, 1110)), //
+ array(125, 1828, 4, array( 360, 700, 1020, 1200)), //
+ array(129, 1921, 3, array( 390, 728, 1050, 1260)), //
+ array(133, 2051, 3, array( 420, 784, 1140, 1350)), //
+ array(137, 2185, 3, array( 450, 812, 1200, 1440)), // 30
+ array(141, 2323, 3, array( 480, 868, 1290, 1530)), //
+ array(145, 2465, 3, array( 510, 924, 1350, 1620)), //
+ array(149, 2611, 3, array( 540, 980, 1440, 1710)), //
+ array(153, 2761, 3, array( 570, 1036, 1530, 1800)), //
+ array(157, 2876, 0, array( 570, 1064, 1590, 1890)), // 35
+ array(161, 3034, 0, array( 600, 1120, 1680, 1980)), //
+ array(165, 3196, 0, array( 630, 1204, 1770, 2100)), //
+ array(169, 3362, 0, array( 660, 1260, 1860, 2220)), //
+ array(173, 3532, 0, array( 720, 1316, 1950, 2310)), //
+ array(177, 3706, 0, array( 750, 1372, 2040, 2430)) // 40
+ );
+
+ /**
+ * @var array Length indicator
+ * @access protected
+ */
+ protected $lengthTableBits = array(
+ array(10, 12, 14),
+ array( 9, 11, 13),
+ array( 8, 16, 16),
+ array( 8, 10, 12)
+ );
+
+ /**
+ * @var array Table of the error correction code (Reed-Solomon block)
+ * See Table 12-16 (pp.30-36), JIS X0510:2004.
+ * @access protected
+ */
+ protected $eccTable = array(
+ array(array( 0, 0), array( 0, 0), array( 0, 0), array( 0, 0)), //
+ array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), // 1
+ array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), //
+ array(array( 1, 0), array( 1, 0), array( 2, 0), array( 2, 0)), //
+ array(array( 1, 0), array( 2, 0), array( 2, 0), array( 4, 0)), //
+ array(array( 1, 0), array( 2, 0), array( 2, 2), array( 2, 2)), // 5
+ array(array( 2, 0), array( 4, 0), array( 4, 0), array( 4, 0)), //
+ array(array( 2, 0), array( 4, 0), array( 2, 4), array( 4, 1)), //
+ array(array( 2, 0), array( 2, 2), array( 4, 2), array( 4, 2)), //
+ array(array( 2, 0), array( 3, 2), array( 4, 4), array( 4, 4)), //
+ array(array( 2, 2), array( 4, 1), array( 6, 2), array( 6, 2)), // 10
+ array(array( 4, 0), array( 1, 4), array( 4, 4), array( 3, 8)), //
+ array(array( 2, 2), array( 6, 2), array( 4, 6), array( 7, 4)), //
+ array(array( 4, 0), array( 8, 1), array( 8, 4), array(12, 4)), //
+ array(array( 3, 1), array( 4, 5), array(11, 5), array(11, 5)), //
+ array(array( 5, 1), array( 5, 5), array( 5, 7), array(11, 7)), // 15
+ array(array( 5, 1), array( 7, 3), array(15, 2), array( 3, 13)), //
+ array(array( 1, 5), array(10, 1), array( 1, 15), array( 2, 17)), //
+ array(array( 5, 1), array( 9, 4), array(17, 1), array( 2, 19)), //
+ array(array( 3, 4), array( 3, 11), array(17, 4), array( 9, 16)), //
+ array(array( 3, 5), array( 3, 13), array(15, 5), array(15, 10)), // 20
+ array(array( 4, 4), array(17, 0), array(17, 6), array(19, 6)), //
+ array(array( 2, 7), array(17, 0), array( 7, 16), array(34, 0)), //
+ array(array( 4, 5), array( 4, 14), array(11, 14), array(16, 14)), //
+ array(array( 6, 4), array( 6, 14), array(11, 16), array(30, 2)), //
+ array(array( 8, 4), array( 8, 13), array( 7, 22), array(22, 13)), // 25
+ array(array(10, 2), array(19, 4), array(28, 6), array(33, 4)), //
+ array(array( 8, 4), array(22, 3), array( 8, 26), array(12, 28)), //
+ array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)), //
+ array(array( 7, 7), array(21, 7), array( 1, 37), array(19, 26)), //
+ array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), // 30
+ array(array(13, 3), array( 2, 29), array(42, 1), array(23, 28)), //
+ array(array(17, 0), array(10, 23), array(10, 35), array(19, 35)), //
+ array(array(17, 1), array(14, 21), array(29, 19), array(11, 46)), //
+ array(array(13, 6), array(14, 23), array(44, 7), array(59, 1)), //
+ array(array(12, 7), array(12, 26), array(39, 14), array(22, 41)), // 35
+ array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)), //
+ array(array(17, 4), array(29, 14), array(49, 10), array(24, 46)), //
+ array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)), //
+ array(array(20, 4), array(40, 7), array(43, 22), array(10, 67)), //
+ array(array(19, 6), array(18, 31), array(34, 34), array(20, 61)) // 40
+ );
+
+ /**
+ * @var array Positions of alignment patterns.
+ * This array includes only the second and the third position of the alignment patterns. Rest of them can be calculated from the distance between them.
+ * See Table 1 in Appendix E (pp.71) of JIS X0510:2004.
+ * @access protected
+ */
+ protected $alignmentPattern = array(
+ array( 0, 0),
+ array( 0, 0), array(18, 0), array(22, 0), array(26, 0), array(30, 0), // 1- 5
+ array(34, 0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), // 6-10
+ array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), // 11-15
+ array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), // 16-20
+ array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), // 21-25
+ array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), // 26-30
+ array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), // 31-35
+ array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58) // 35-40
+ );
+
+ /**
+ * @var array Version information pattern (BCH coded).
+ * See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
+ * size: [QRSPEC_VERSION_MAX - 6]
+ * @access protected
+ */
+ protected $versionPattern = array(
+ 0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d, //
+ 0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9, //
+ 0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75, //
+ 0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64, //
+ 0x27541, 0x28c69
+ );
+
+ /**
+ * @var array Format information
+ * @access protected
+ */
+ protected $formatInfo = array(
+ array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976), //
+ array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0), //
+ array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed), //
+ array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b) //
+ );
+
+
+ // -------------------------------------------------
+ // -------------------------------------------------
+
+
+ /**
+ * This is the class constructor.
+ * Creates a QRcode object
+ * @param string $code code to represent using QRcode
+ * @param string $eclevel error level: <ul><li>L : About 7% or less errors can be corrected.</li><li>M : About 15% or less errors can be corrected.</li><li>Q : About 25% or less errors can be corrected.</li><li>H : About 30% or less errors can be corrected.</li></ul>
+ * @access public
+ * @since 1.0.000
+ */
+ public function __construct($code, $eclevel = 'L') {
+ $barcode_array = array();
+ if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {
+ return false;
+ }
+ // set error correction level
+ $this->level = array_search($eclevel, array('L', 'M', 'Q', 'H'));
+ if ($this->level === false) {
+ $this->level = QR_ECLEVEL_L;
+ }
+ if (($this->hint != QR_MODE_8B) AND ($this->hint != QR_MODE_KJ)) {
+ return false;
+ }
+ if (($this->version < 0) OR ($this->version > QRSPEC_VERSION_MAX)) {
+ return false;
+ }
+ $this->items = array();
+ $this->encodeString($code);
+ $qrTab = $this->binarize($this->data);
+ $size = count($qrTab);
+ $barcode_array['num_rows'] = $size;
+ $barcode_array['num_cols'] = $size;
+ $barcode_array['bcode'] = array();
+ foreach ($qrTab as $line) {
+ $arrAdd = array();
+ foreach (str_split($line) as $char) {
+ $arrAdd[] = ($char=='1')?1:0;
+ }
+ $barcode_array['bcode'][] = $arrAdd;
+ }
+ $this->barcode_array = $barcode_array;
+ }
+
+ /**
+ * Returns a barcode array which is readable by TCPDF
+ * @return array barcode array readable by TCPDF;
+ * @access public
+ */
+ public function getBarcodeArray() {
+ return $this->barcode_array;
+ }
+
+ /**
+ * Convert the frame in binary form
+ * @param array $frame array to binarize
+ * @return array frame in binary form
+ */
+ protected function binarize($frame) {
+ $len = count($frame);
+ // the frame is square (width = height)
+ foreach ($frame as &$frameLine) {
+ for ($i=0; $i<$len; $i++) {
+ $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
+ }
+ }
+ return $frame;
+ }
+
+ /**
+ * Encode the input string to QR code
+ * @param string $string input string to encode
+ */
+ protected function encodeString($string) {
+ $this->dataStr = $string;
+ if (!$this->casesensitive) {
+ $this->toUpper();
+ }
+ $ret = $this->splitString();
+ if ($ret < 0) {
+ return NULL;
+ }
+ $this->encodeMask(-1);
+ }
+
+ /**
+ * Encode mask
+ * @param int $mask masking mode
+ */
+ protected function encodeMask($mask) {
+ $spec = array(0, 0, 0, 0, 0);
+ $this->datacode = $this->getByteStream($this->items);
+ if (is_null($this->datacode)) {
+ return NULL;
+ }
+ $spec = $this->getEccSpec($this->version, $this->level, $spec);
+ $this->b1 = $this->rsBlockNum1($spec);
+ $this->dataLength = $this->rsDataLength($spec);
+ $this->eccLength = $this->rsEccLength($spec);
+ $this->ecccode = array_fill(0, $this->eccLength, 0);
+ $this->blocks = $this->rsBlockNum($spec);
+ $ret = $this->init($spec);
+ if ($ret < 0) {
+ return NULL;
+ }
+ $this->count = 0;
+ $this->width = $this->getWidth($this->version);
+ $this->frame = $this->newFrame($this->version);
+ $this->x = $this->width - 1;
+ $this->y = $this->width - 1;
+ $this->dir = -1;
+ $this->bit = -1;
+ // inteleaved data and ecc codes
+ for ($i=0; $i < ($this->dataLength + $this->eccLength); $i++) {
+ $code = $this->getCode();
+ $bit = 0x80;
+ for ($j=0; $j<8; $j++) {
+ $addr = $this->getNextPosition();
+ $this->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
+ $bit = $bit >> 1;
+ }
+ }
+ // remainder bits
+ $j = $this->getRemainder($this->version);
+ for ($i=0; $i<$j; $i++) {
+ $addr = $this->getNextPosition();
+ $this->setFrameAt($addr, 0x02);
+ }
+ // masking
+ $this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
+ if ($mask < 0) {
+ if (QR_FIND_BEST_MASK) {
+ $masked = $this->mask($this->width, $this->frame, $this->level);
+ } else {
+ $masked = $this->makeMask($this->width, $this->frame, (intval(QR_DEFAULT_MASK) % 8), $this->level);
+ }
+ } else {
+ $masked = $this->makeMask($this->width, $this->frame, $mask, $this->level);
+ }
+ if ($masked == NULL) {
+ return NULL;
+ }
+ $this->data = $masked;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // FrameFiller
+
+ /**
+ * Set frame value at specified position
+ * @param array $at x,y position
+ * @param int $val value of the character to set
+ */
+ protected function setFrameAt($at, $val) {
+ $this->frame[$at['y']][$at['x']] = chr($val);
+ }
+
+ /**
+ * Get frame value at specified position
+ * @param array $at x,y position
+ * @return value at specified position
+ */
+ protected function getFrameAt($at) {
+ return ord($this->frame[$at['y']][$at['x']]);
+ }
+
+ /**
+ * Return the next frame position
+ * @return array of x,y coordinates
+ */
+ protected function getNextPosition() {
+ do {
+ if ($this->bit == -1) {
+ $this->bit = 0;
+ return array('x'=>$this->x, 'y'=>$this->y);
+ }
+ $x = $this->x;
+ $y = $this->y;
+ $w = $this->width;
+ if ($this->bit == 0) {
+ $x--;
+ $this->bit++;
+ } else {
+ $x++;
+ $y += $this->dir;
+ $this->bit--;
+ }
+ if ($this->dir < 0) {
+ if ($y < 0) {
+ $y = 0;
+ $x -= 2;
+ $this->dir = 1;
+ if ($x == 6) {
+ $x--;
+ $y = 9;
+ }
+ }
+ } else {
+ if ($y == $w) {
+ $y = $w - 1;
+ $x -= 2;
+ $this->dir = -1;
+ if ($x == 6) {
+ $x--;
+ $y -= 8;
+ }
+ }
+ }
+ if (($x < 0) OR ($y < 0)) {
+ return NULL;
+ }
+ $this->x = $x;
+ $this->y = $y;
+ } while(ord($this->frame[$y][$x]) & 0x80);
+ return array('x'=>$x, 'y'=>$y);
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRrawcode
+
+ /**
+ * Initialize code.
+ * @param array $spec array of ECC specification
+ * @return 0 in case of success, -1 in case of error
+ */
+ protected function init($spec) {
+ $dl = $this->rsDataCodes1($spec);
+ $el = $this->rsEccCodes1($spec);
+ $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+ $blockNo = 0;
+ $dataPos = 0;
+ $eccPos = 0;
+ $endfor = $this->rsBlockNum1($spec);
+ for ($i=0; $i < $endfor; ++$i) {
+ $ecc = array_slice($this->ecccode, $eccPos);
+ $this->rsblocks[$blockNo] = array();
+ $this->rsblocks[$blockNo]['dataLength'] = $dl;
+ $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
+ $this->rsblocks[$blockNo]['eccLength'] = $el;
+ $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
+ $this->rsblocks[$blockNo]['ecc'] = $ecc;
+ $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
+ $dataPos += $dl;
+ $eccPos += $el;
+ $blockNo++;
+ }
+ if ($this->rsBlockNum2($spec) == 0) {
+ return 0;
+ }
+ $dl = $this->rsDataCodes2($spec);
+ $el = $this->rsEccCodes2($spec);
+ $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+ if ($rs == NULL) {
+ return -1;
+ }
+ $endfor = $this->rsBlockNum2($spec);
+ for ($i=0; $i < $endfor; ++$i) {
+ $ecc = array_slice($this->ecccode, $eccPos);
+ $this->rsblocks[$blockNo] = array();
+ $this->rsblocks[$blockNo]['dataLength'] = $dl;
+ $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
+ $this->rsblocks[$blockNo]['eccLength'] = $el;
+ $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
+ $this->rsblocks[$blockNo]['ecc'] = $ecc;
+ $this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);
+ $dataPos += $dl;
+ $eccPos += $el;
+ $blockNo++;
+ }
+ return 0;
+ }
+
+ /**
+ * Return Reed-Solomon block code.
+ * @return array rsblocks
+ */
+ protected function getCode() {
+ if ($this->count < $this->dataLength) {
+ $row = $this->count % $this->blocks;
+ $col = $this->count / $this->blocks;
+ if ($col >= $this->rsblocks[0]['dataLength']) {
+ $row += $this->b1;
+ }
+ $ret = $this->rsblocks[$row]['data'][$col];
+ } elseif ($this->count < $this->dataLength + $this->eccLength) {
+ $row = ($this->count - $this->dataLength) % $this->blocks;
+ $col = ($this->count - $this->dataLength) / $this->blocks;
+ $ret = $this->rsblocks[$row]['ecc'][$col];
+ } else {
+ return 0;
+ }
+ $this->count++;
+ return $ret;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRmask
+
+ /**
+ * Write Format Information on frame and returns the number of black bits
+ * @param int $width frame width
+ * @param array $frame frame
+ * @param array $mask masking mode
+ * @param int $level error correction level
+ * @return int blacks
+ */
+ protected function writeFormatInformation($width, &$frame, $mask, $level) {
+ $blacks = 0;
+ $format = $this->getFormatInfo($mask, $level);
+ for ($i=0; $i<8; ++$i) {
+ if ($format & 1) {
+ $blacks += 2;
+ $v = 0x85;
+ } else {
+ $v = 0x84;
+ }
+ $frame[8][$width - 1 - $i] = chr($v);
+ if ($i < 6) {
+ $frame[$i][8] = chr($v);
+ } else {
+ $frame[$i + 1][8] = chr($v);
+ }
+ $format = $format >> 1;
+ }
+ for ($i=0; $i<7; ++$i) {
+ if ($format & 1) {
+ $blacks += 2;
+ $v = 0x85;
+ } else {
+ $v = 0x84;
+ }
+ $frame[$width - 7 + $i][8] = chr($v);
+ if ($i == 0) {
+ $frame[8][7] = chr($v);
+ } else {
+ $frame[8][6 - $i] = chr($v);
+ }
+ $format = $format >> 1;
+ }
+ return $blacks;
+ }
+
+ /**
+ * mask0
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask0($x, $y) {
+ return ($x + $y) & 1;
+ }
+
+ /**
+ * mask1
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask1($x, $y) {
+ return ($y & 1);
+ }
+
+ /**
+ * mask2
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask2($x, $y) {
+ return ($x % 3);
+ }
+
+ /**
+ * mask3
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask3($x, $y) {
+ return ($x + $y) % 3;
+ }
+
+ /**
+ * mask4
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask4($x, $y) {
+ return (((int)($y / 2)) + ((int)($x / 3))) & 1;
+ }
+
+ /**
+ * mask5
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask5($x, $y) {
+ return (($x * $y) & 1) + ($x * $y) % 3;
+ }
+
+ /**
+ * mask6
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask6($x, $y) {
+ return ((($x * $y) & 1) + ($x * $y) % 3) & 1;
+ }
+
+ /**
+ * mask7
+ * @param int $x X position
+ * @param int $y Y position
+ * @return int mask
+ */
+ protected function mask7($x, $y) {
+ return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;
+ }
+
+ /**
+ * Return bitmask
+ * @param int $maskNo mask number
+ * @param int $width width
+ * @param array $frame frame
+ * @return array bitmask
+ */
+ protected function generateMaskNo($maskNo, $width, $frame) {
+ $bitMask = array_fill(0, $width, array_fill(0, $width, 0));
+ for ($y=0; $y<$width; ++$y) {
+ for ($x=0; $x<$width; ++$x) {
+ if (ord($frame[$y][$x]) & 0x80) {
+ $bitMask[$y][$x] = 0;
+ } else {
+ $maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);
+ $bitMask[$y][$x] = ($maskFunc == 0)?1:0;
+ }
+ }
+ }
+ return $bitMask;
+ }
+
+ /**
+ * makeMaskNo
+ * @param int $maskNo
+ * @param int $width
+ * @param int $s
+ * @param int $d
+ * @param boolean $maskGenOnly
+ * @return int b
+ */
+ protected function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly=false) {
+ $b = 0;
+ $bitMask = array();
+ $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
+ if ($maskGenOnly) {
+ return;
+ }
+ $d = $s;
+ for ($y=0; $y<$width; ++$y) {
+ for ($x=0; $x<$width; ++$x) {
+ if ($bitMask[$y][$x] == 1) {
+ $d[$y][$x] = chr(ord($s[$y][$x]) ^ (int)$bitMask[$y][$x]);
+ }
+ $b += (int)(ord($d[$y][$x]) & 1);
+ }
+ }
+ return $b;
+ }
+
+ /**
+ * makeMask
+ * @param int $width
+ * @param array $frame
+ * @param int $maskNo
+ * @param int $level
+ * @return array mask
+ */
+ protected function makeMask($width, $frame, $maskNo, $level) {
+ $masked = array_fill(0, $width, str_repeat("\0", $width));
+ $this->makeMaskNo($maskNo, $width, $frame, $masked);
+ $this->writeFormatInformation($width, $masked, $maskNo, $level);
+ return $masked;
+ }
+
+ /**
+ * calcN1N3
+ * @param int $length
+ * @return int demerit
+ */
+ protected function calcN1N3($length) {
+ $demerit = 0;
+ for ($i=0; $i<$length; ++$i) {
+ if ($this->runLength[$i] >= 5) {
+ $demerit += (N1 + ($this->runLength[$i] - 5));
+ }
+ if ($i & 1) {
+ if (($i >= 3) AND ($i < ($length-2)) AND ($this->runLength[$i] % 3 == 0)) {
+ $fact = (int)($this->runLength[$i] / 3);
+ if (($this->runLength[$i-2] == $fact)
+ AND ($this->runLength[$i-1] == $fact)
+ AND ($this->runLength[$i+1] == $fact)
+ AND ($this->runLength[$i+2] == $fact)) {
+ if (($this->runLength[$i-3] < 0) OR ($this->runLength[$i-3] >= (4 * $fact))) {
+ $demerit += N3;
+ } elseif ((($i+3) >= $length) OR ($this->runLength[$i+3] >= (4 * $fact))) {
+ $demerit += N3;
+ }
+ }
+ }
+ }
+ }
+ return $demerit;
+ }
+
+ /**
+ * evaluateSymbol
+ * @param int $width
+ * @param array $frame
+ * @return int demerit
+ */
+ protected function evaluateSymbol($width, $frame) {
+ $head = 0;
+ $demerit = 0;
+ for ($y=0; $y<$width; ++$y) {
+ $head = 0;
+ $this->runLength[0] = 1;
+ $frameY = $frame[$y];
+ if ($y > 0) {
+ $frameYM = $frame[$y-1];
+ }
+ for ($x=0; $x<$width; ++$x) {
+ if (($x > 0) AND ($y > 0)) {
+ $b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);
+ $w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);
+ if (($b22 | ($w22 ^ 1)) & 1) {
+ $demerit += N2;
+ }
+ }
+ if (($x == 0) AND (ord($frameY[$x]) & 1)) {
+ $this->runLength[0] = -1;
+ $head = 1;
+ $this->runLength[$head] = 1;
+ } elseif ($x > 0) {
+ if ((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {
+ $head++;
+ $this->runLength[$head] = 1;
+ } else {
+ $this->runLength[$head]++;
+ }
+ }
+ }
+ $demerit += $this->calcN1N3($head+1);
+ }
+ for ($x=0; $x<$width; ++$x) {
+ $head = 0;
+ $this->runLength[0] = 1;
+ for ($y=0; $y<$width; ++$y) {
+ if (($y == 0) AND (ord($frame[$y][$x]) & 1)) {
+ $this->runLength[0] = -1;
+ $head = 1;
+ $this->runLength[$head] = 1;
+ } elseif ($y > 0) {
+ if ((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {
+ $head++;
+ $this->runLength[$head] = 1;
+ } else {
+ $this->runLength[$head]++;
+ }
+ }
+ }
+ $demerit += $this->calcN1N3($head+1);
+ }
+ return $demerit;
+ }
+
+ /**
+ * mask
+ * @param int $width
+ * @param array $frame
+ * @param int $level
+ * @return array best mask
+ */
+ protected function mask($width, $frame, $level) {
+ $minDemerit = PHP_INT_MAX;
+ $bestMaskNum = 0;
+ $bestMask = array();
+ $checked_masks = array(0, 1, 2, 3, 4, 5, 6, 7);
+ if (QR_FIND_FROM_RANDOM !== false) {
+ $howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
+ for ($i = 0; $i < $howManuOut; ++$i) {
+ $remPos = rand (0, count($checked_masks)-1);
+ unset($checked_masks[$remPos]);
+ $checked_masks = array_values($checked_masks);
+ }
+ }
+ $bestMask = $frame;
+ foreach ($checked_masks as $i) {
+ $mask = array_fill(0, $width, str_repeat("\0", $width));
+ $demerit = 0;
+ $blacks = 0;
+ $blacks = $this->makeMaskNo($i, $width, $frame, $mask);
+ $blacks += $this->writeFormatInformation($width, $mask, $i, $level);
+ $blacks = (int)(100 * $blacks / ($width * $width));
+ $demerit = (int)((int)(abs($blacks - 50) / 5) * N4);
+ $demerit += $this->evaluateSymbol($width, $mask);
+ if ($demerit < $minDemerit) {
+ $minDemerit = $demerit;
+ $bestMask = $mask;
+ $bestMaskNum = $i;
+ }
+ }
+ return $bestMask;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRsplit
+
+ /**
+ * Return true if the character at specified position is a number
+ * @param string $str string
+ * @param int $pos characted position
+ * @return boolean true of false
+ */
+ protected function isdigitat($str, $pos) {
+ if ($pos >= strlen($str)) {
+ return false;
+ }
+ return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));
+ }
+
+ /**
+ * Return true if the character at specified position is an alphanumeric character
+ * @param string $str string
+ * @param int $pos characted position
+ * @return boolean true of false
+ */
+ protected function isalnumat($str, $pos) {
+ if ($pos >= strlen($str)) {
+ return false;
+ }
+ return ($this->lookAnTable(ord($str[$pos])) >= 0);
+ }
+
+ /**
+ * identifyMode
+ * @param int $pos
+ * @return int mode
+ */
+ protected function identifyMode($pos) {
+ if ($pos >= strlen($this->dataStr)) {
+ return QR_MODE_NL;
+ }
+ $c = $this->dataStr[$pos];
+ if ($this->isdigitat($this->dataStr, $pos)) {
+ return QR_MODE_NM;
+ } elseif ($this->isalnumat($this->dataStr, $pos)) {
+ return QR_MODE_AN;
+ } elseif ($this->hint == QR_MODE_KJ) {
+ if ($pos+1 < strlen($this->dataStr)) {
+ $d = $this->dataStr[$pos+1];
+ $word = (ord($c) << 8) | ord($d);
+ if (($word >= 0x8140 && $word <= 0x9ffc) OR ($word >= 0xe040 && $word <= 0xebbf)) {
+ return QR_MODE_KJ;
+ }
+ }
+ }
+ return QR_MODE_8B;
+ }
+
+ /**
+ * eatNum
+ * @return int run
+ */
+ protected function eatNum() {
+ $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
+ $p = 0;
+ while($this->isdigitat($this->dataStr, $p)) {
+ $p++;
+ }
+ $run = $p;
+ $mode = $this->identifyMode($p);
+ if ($mode == QR_MODE_8B) {
+ $dif = $this->estimateBitsModeNum($run) + 4 + $ln
+ + $this->estimateBitsMode8(1) // + 4 + l8
+ - $this->estimateBitsMode8($run + 1); // - 4 - l8
+ if ($dif > 0) {
+ return $this->eat8();
+ }
+ }
+ if ($mode == QR_MODE_AN) {
+ $dif = $this->estimateBitsModeNum($run) + 4 + $ln
+ + $this->estimateBitsModeAn(1) // + 4 + la
+ - $this->estimateBitsModeAn($run + 1);// - 4 - la
+ if ($dif > 0) {
+ return $this->eatAn();
+ }
+ }
+ $this->items = $this->appendNewInputItem($this->items, QR_MODE_NM, $run, str_split($this->dataStr));
+ return $run;
+ }
+
+ /**
+ * eatAn
+ * @return int run
+ */
+ protected function eatAn() {
+ $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
+ $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
+ $p = 0;
+ while($this->isalnumat($this->dataStr, $p)) {
+ if ($this->isdigitat($this->dataStr, $p)) {
+ $q = $p;
+ while($this->isdigitat($this->dataStr, $q)) {
+ $q++;
+ }
+ $dif = $this->estimateBitsModeAn($p) // + 4 + la
+ + $this->estimateBitsModeNum($q - $p) + 4 + $ln
+ - $this->estimateBitsModeAn($q); // - 4 - la
+ if ($dif < 0) {
+ break;
+ } else {
+ $p = $q;
+ }
+ } else {
+ $p++;
+ }
+ }
+ $run = $p;
+ if (!$this->isalnumat($this->dataStr, $p)) {
+ $dif = $this->estimateBitsModeAn($run) + 4 + $la
+ + $this->estimateBitsMode8(1) // + 4 + l8
+ - $this->estimateBitsMode8($run + 1); // - 4 - l8
+ if ($dif > 0) {
+ return $this->eat8();
+ }
+ }
+ $this->items = $this->appendNewInputItem($this->items, QR_MODE_AN, $run, str_split($this->dataStr));
+ return $run;
+ }
+
+ /**
+ * eatKanji
+ * @return int run
+ */
+ protected function eatKanji() {
+ $p = 0;
+ while($this->identifyMode($p) == QR_MODE_KJ) {
+ $p += 2;
+ }
+ $this->items = $this->appendNewInputItem($this->items, QR_MODE_KJ, $p, str_split($this->dataStr));
+ return $run;
+ }
+
+ /**
+ * eat8
+ * @return int run
+ */
+ protected function eat8() {
+ $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
+ $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
+ $p = 1;
+ $dataStrLen = strlen($this->dataStr);
+ while($p < $dataStrLen) {
+ $mode = $this->identifyMode($p);
+ if ($mode == QR_MODE_KJ) {
+ break;
+ }
+ if ($mode == QR_MODE_NM) {
+ $q = $p;
+ while($this->isdigitat($this->dataStr, $q)) {
+ $q++;
+ }
+ $dif = $this->estimateBitsMode8($p) // + 4 + l8
+ + $this->estimateBitsModeNum($q - $p) + 4 + $ln
+ - $this->estimateBitsMode8($q); // - 4 - l8
+ if ($dif < 0) {
+ break;
+ } else {
+ $p = $q;
+ }
+ } elseif ($mode == QR_MODE_AN) {
+ $q = $p;
+ while($this->isalnumat($this->dataStr, $q)) {
+ $q++;
+ }
+ $dif = $this->estimateBitsMode8($p) // + 4 + l8
+ + $this->estimateBitsModeAn($q - $p) + 4 + $la
+ - $this->estimateBitsMode8($q); // - 4 - l8
+ if ($dif < 0) {
+ break;
+ } else {
+ $p = $q;
+ }
+ } else {
+ $p++;
+ }
+ }
+ $run = $p;
+ $this->items = $this->appendNewInputItem($this->items, QR_MODE_8B, $run, str_split($this->dataStr));
+ return $run;
+ }
+
+ /**
+ * splitString
+ */
+ protected function splitString() {
+ while (strlen($this->dataStr) > 0) {
+ if ($this->dataStr == '') {
+ return 0;
+ }
+ $mode = $this->identifyMode(0);
+ switch ($mode) {
+ case QR_MODE_NM: {
+ $length = $this->eatNum();
+ break;
+ }
+ case QR_MODE_AN: {
+ $length = $this->eatAn();
+ break;
+ }
+ case QR_MODE_KJ: {
+ if ($hint == QR_MODE_KJ) {
+ $length = $this->eatKanji();
+ } else {
+ $length = $this->eat8();
+ }
+ break;
+ }
+ default: {
+ $length = $this->eat8();
+ break;
+ }
+ }
+ if ($length == 0) {
+ return 0;
+ }
+ if ($length < 0) {
+ return -1;
+ }
+ $this->dataStr = substr($this->dataStr, $length);
+ }
+ }
+
+ /**
+ * toUpper
+ */
+ protected function toUpper() {
+ $stringLen = strlen($this->dataStr);
+ $p = 0;
+ while ($p < $stringLen) {
+ $mode = $this->identifyMode(substr($this->dataStr, $p), $this->hint);
+ if ($mode == QR_MODE_KJ) {
+ $p += 2;
+ } else {
+ if ((ord($this->dataStr[$p]) >= ord('a')) AND (ord($this->dataStr[$p]) <= ord('z'))) {
+ $this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);
+ }
+ $p++;
+ }
+ }
+ return $this->dataStr;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRinputItem
+
+ /**
+ * newInputItem
+ * @param int $mode
+ * @param int $size
+ * @param array $data
+ * @param array $bstream
+ * @return array input item
+ */
+ protected function newInputItem($mode, $size, $data, $bstream=null) {
+ $setData = array_slice($data, 0, $size);
+ if (count($setData) < $size) {
+ $setData = array_merge($setData, array_fill(0, ($size - count($setData)), 0));
+ }
+ if (!$this->check($mode, $size, $setData)) {
+ return NULL;
+ }
+ $inputitem = array();
+ $inputitem['mode'] = $mode;
+ $inputitem['size'] = $size;
+ $inputitem['data'] = $setData;
+ $inputitem['bstream'] = $bstream;
+ return $inputitem;
+ }
+
+ /**
+ * encodeModeNum
+ * @param array $inputitem
+ * @param int $version
+ * @return array input item
+ */
+ protected function encodeModeNum($inputitem, $version) {
+ $words = (int)($inputitem['size'] / 3);
+ $inputitem['bstream'] = array();
+ $val = 0x1;
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_NM, $version), $inputitem['size']);
+ for ($i=0; $i < $words; ++$i) {
+ $val = (ord($inputitem['data'][$i*3 ]) - ord('0')) * 100;
+ $val += (ord($inputitem['data'][$i*3+1]) - ord('0')) * 10;
+ $val += (ord($inputitem['data'][$i*3+2]) - ord('0'));
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 10, $val);
+ }
+ if ($inputitem['size'] - $words * 3 == 1) {
+ $val = ord($inputitem['data'][$words*3]) - ord('0');
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
+ } elseif (($inputitem['size'] - ($words * 3)) == 2) {
+ $val = (ord($inputitem['data'][$words*3 ]) - ord('0')) * 10;
+ $val += (ord($inputitem['data'][$words*3+1]) - ord('0'));
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 7, $val);
+ }
+ return $inputitem;
+ }
+
+ /**
+ * encodeModeAn
+ * @param array $inputitem
+ * @param int $version
+ * @return array input item
+ */
+ protected function encodeModeAn($inputitem, $version) {
+ $words = (int)($inputitem['size'] / 2);
+ $inputitem['bstream'] = array();
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x02);
+ $inputitem['bstream'] = $this->appendNum(v, $this->lengthIndicator(QR_MODE_AN, $version), $inputitem['size']);
+ for ($i=0; $i < $words; ++$i) {
+ $val = (int)$this->lookAnTable(ord($inputitem['data'][$i*2 ])) * 45;
+ $val += (int)$this->lookAnTable(ord($inputitem['data'][$i*2+1]));
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 11, $val);
+ }
+ if ($inputitem['size'] & 1) {
+ $val = $this->lookAnTable(ord($inputitem['data'][($words * 2)]));
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 6, $val);
+ }
+ return $inputitem;
+ }
+
+ /**
+ * encodeMode8
+ * @param array $inputitem
+ * @param int $version
+ * @return array input item
+ */
+ protected function encodeMode8($inputitem, $version) {
+ $inputitem['bstream'] = array();
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x4);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_8B, $version), $inputitem['size']);
+ for ($i=0; $i < $inputitem['size']; ++$i) {
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][$i]));
+ }
+ return $inputitem;
+ }
+
+ /**
+ * encodeModeKanji
+ * @param array $inputitem
+ * @param int $version
+ * @return array input item
+ */
+ protected function encodeModeKanji($inputitem, $version) {
+ $inputitem['bstream'] = array();
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x8);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_KJ, $version), (int)($inputitem['size'] / 2));
+ for ($i=0; $i<$inputitem['size']; $i+=2) {
+ $val = (ord($inputitem['data'][$i]) << 8) | ord($inputitem['data'][$i+1]);
+ if ($val <= 0x9ffc) {
+ $val -= 0x8140;
+ } else {
+ $val -= 0xc140;
+ }
+ $h = ($val >> 8) * 0xc0;
+ $val = ($val & 0xff) + $h;
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 13, $val);
+ }
+ return $inputitem;
+ }
+
+ /**
+ * encodeModeStructure
+ * @param array $inputitem
+ * @return array input item
+ */
+ protected function encodeModeStructure($inputitem) {
+ $inputitem['bstream'] = array();
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x03);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][1]) - 1);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][0]) - 1);
+ $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][2]));
+ return $inputitem;
+ }
+
+ /**
+ * encodeBitStream
+ * @param array $inputitem
+ * @param int $version
+ * @return array input item
+ */
+ protected function encodeBitStream($inputitem, $version) {
+ $inputitem['bstream'] = array();
+ $words = $this->maximumWords($inputitem['mode'], $version);
+ if ($inputitem['size'] > $words) {
+ $st1 = $this->newInputItem($inputitem['mode'], $words, $inputitem['data']);
+ $st2 = $this->newInputItem($inputitem['mode'], $inputitem['size'] - $words, array_slice($inputitem['data'], $words));
+ $st1 = $this->encodeBitStream($st1, $version);
+ $st2 = $this->encodeBitStream($st2, $version);
+ $inputitem['bstream'] = array();
+ $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st1['bstream']);
+ $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st2['bstream']);
+ } else {
+ switch($inputitem['mode']) {
+ case QR_MODE_NM: {
+ $inputitem = $this->encodeModeNum($inputitem, $version);
+ break;
+ }
+ case QR_MODE_AN: {
+ $inputitem = $this->encodeModeAn($inputitem, $version);
+ break;
+ }
+ case QR_MODE_8B: {
+ $inputitem = $this->encodeMode8($inputitem, $version);
+ break;
+ }
+ case QR_MODE_KJ: {
+ $inputitem = $this->encodeModeKanji($inputitem, $version);
+ break;
+ }
+ case QR_MODE_ST: {
+ $inputitem = $this->encodeModeStructure($inputitem);
+ break;
+ }
+ default: {
+ break;
+ }
+ }
+ }
+ return $inputitem;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRinput
+
+ /**
+ * Append data to an input object.
+ * The data is copied and appended to the input object.
+ * @param array items input items
+ * @param int $mode encoding mode.
+ * @param int $size size of data (byte).
+ * @param array $data array of input data.
+ * @return items
+ *
+ */
+ protected function appendNewInputItem($items, $mode, $size, $data) {
+ $items[] = $this->newInputItem($mode, $size, $data);
+ return $items;
+ }
+
+ /**
+ * insertStructuredAppendHeader
+ * @param array $items
+ * @param int $size
+ * @param int $index
+ * @param int $parity
+ * @return array items
+ */
+ protected function insertStructuredAppendHeader($items, $size, $index, $parity) {
+ if ($size > MAX_STRUCTURED_SYMBOLS) {
+ return -1;
+ }
+ if (($index <= 0) OR ($index > MAX_STRUCTURED_SYMBOLS)) {
+ return -1;
+ }
+ $buf = array($size, $index, $parity);
+ $entry = $this->newInputItem(QR_MODE_ST, 3, buf);
+ array_unshift($items, $entry);
+ return $items;
+ }
+
+ /**
+ * calcParity
+ * @param array $items
+ * @return int parity
+ */
+ protected function calcParity($items) {
+ $parity = 0;
+ foreach ($items as $item) {
+ if ($item['mode'] != QR_MODE_ST) {
+ for ($i=$item['size']-1; $i>=0; --$i) {
+ $parity ^= $item['data'][$i];
+ }
+ }
+ }
+ return $parity;
+ }
+
+ /**
+ * checkModeNum
+ * @param int $size
+ * @param array $data
+ * @return boolean true or false
+ */
+ protected function checkModeNum($size, $data) {
+ for ($i=0; $i<$size; ++$i) {
+ if ((ord($data[$i]) < ord('0')) OR (ord($data[$i]) > ord('9'))){
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * estimateBitsModeNum
+ * @param int $size
+ * @return int number of bits
+ */
+ protected function estimateBitsModeNum($size) {
+ $w = (int)$size / 3;
+ $bits = $w * 10;
+ switch($size - $w * 3) {
+ case 1: {
+ $bits += 4;
+ break;
+ }
+ case 2: {
+ $bits += 7;
+ break;
+ }
+ default: {
+ break;
+ }
+ }
+ return $bits;
+ }
+
+ /**
+ * Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19).
+ * @param int $c character value
+ * @return value
+ */
+ protected function lookAnTable($c) {
+ return (($c > 127)?-1:$this->anTable[$c]);
+ }
+
+ /**
+ * checkModeAn
+ * @param int $size
+ * @param array $data
+ * @return boolean true or false
+ */
+ protected function checkModeAn($size, $data) {
+ for ($i=0; $i<$size; ++$i) {
+ if ($this->lookAnTable(ord($data[$i])) == -1) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * estimateBitsModeAn
+ * @param int $size
+ * @return int number of bits
+ */
+ protected function estimateBitsModeAn($size) {
+ $w = (int)($size / 2);
+ $bits = $w * 11;
+ if ($size & 1) {
+ $bits += 6;
+ }
+ return $bits;
+ }
+
+ /**
+ * estimateBitsMode8
+ * @param int $size
+ * @return int number of bits
+ */
+ protected function estimateBitsMode8($size) {
+ return $size * 8;
+ }
+
+ /**
+ * estimateBitsModeKanji
+ * @param int $size
+ * @return int number of bits
+ */
+ protected function estimateBitsModeKanji($size) {
+ return (int)(($size / 2) * 13);
+ }
+
+ /**
+ * checkModeKanji
+ * @param int $size
+ * @param array $data
+ * @return boolean true or false
+ */
+ protected function checkModeKanji($size, $data) {
+ if ($size & 1) {
+ return false;
+ }
+ for ($i=0; $i<$size; $i+=2) {
+ $val = (ord($data[$i]) << 8) | ord($data[$i+1]);
+ if (($val < 0x8140) OR (($val > 0x9ffc) AND ($val < 0xe040)) OR ($val > 0xebbf)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Validate the input data.
+ * @param int $mode encoding mode.
+ * @param int $size size of data (byte).
+ * @param array data data to validate
+ * @return boolean true in case of valid data, false otherwise
+ */
+ protected function check($mode, $size, $data) {
+ if ($size <= 0) {
+ return false;
+ }
+ switch($mode) {
+ case QR_MODE_NM: {
+ return $this->checkModeNum($size, $data);
+ }
+ case QR_MODE_AN: {
+ return $this->checkModeAn($size, $data);
+ }
+ case QR_MODE_KJ: {
+ return $this->checkModeKanji($size, $data);
+ }
+ case QR_MODE_8B: {
+ return true;
+ }
+ case QR_MODE_ST: {
+ return true;
+ }
+ default: {
+ break;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * estimateBitStreamSize
+ * @param array $items
+ * @param int $version
+ * @return int bits
+ */
+ protected function estimateBitStreamSize($items, $version) {
+ $bits = 0;
+ if ($version == 0) {
+ $version = 1;
+ }
+ foreach ($items as $item) {
+ switch($item['mode']) {
+ case QR_MODE_NM: {
+ $bits = $this->estimateBitsModeNum($item['size']);
+ break;
+ }
+ case QR_MODE_AN: {
+ $bits = $this->estimateBitsModeAn($item['size']);
+ break;
+ }
+ case QR_MODE_8B: {
+ $bits = $this->estimateBitsMode8($item['size']);
+ break;
+ }
+ case QR_MODE_KJ: {
+ $bits = $this->estimateBitsModeKanji($item['size']);
+ break;
+ }
+ case QR_MODE_ST: {
+ return STRUCTURE_HEADER_BITS;
+ }
+ default: {
+ return 0;
+ }
+ }
+ $l = $this->lengthIndicator($item['mode'], $version);
+ $m = 1 << $l;
+ $num = (int)(($item['size'] + $m - 1) / $m);
+ $bits += $num * (4 + $l);
+ }
+ return $bits;
+ }
+
+ /**
+ * estimateVersion
+ * @param array $items
+ * @return int version
+ */
+ protected function estimateVersion($items) {
+ $version = 0;
+ $prev = 0;
+ do {
+ $prev = $version;
+ $bits = $this->estimateBitStreamSize($items, $prev);
+ $version = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
+ if ($version < 0) {
+ return -1;
+ }
+ } while ($version > $prev);
+ return $version;
+ }
+
+ /**
+ * lengthOfCode
+ * @param int $mode
+ * @param int $version
+ * @param int $bits
+ * @return int size
+ */
+ protected function lengthOfCode($mode, $version, $bits) {
+ $payload = $bits - 4 - $this->lengthIndicator($mode, $version);
+ switch($mode) {
+ case QR_MODE_NM: {
+ $chunks = (int)($payload / 10);
+ $remain = $payload - $chunks * 10;
+ $size = $chunks * 3;
+ if ($remain >= 7) {
+ $size += 2;
+ } elseif ($remain >= 4) {
+ $size += 1;
+ }
+ break;
+ }
+ case QR_MODE_AN: {
+ $chunks = (int)($payload / 11);
+ $remain = $payload - $chunks * 11;
+ $size = $chunks * 2;
+ if ($remain >= 6) {
+ ++$size;
+ }
+ break;
+ }
+ case QR_MODE_8B: {
+ $size = (int)($payload / 8);
+ break;
+ }
+ case QR_MODE_KJ: {
+ $size = (int)(($payload / 13) * 2);
+ break;
+ }
+ case QR_MODE_ST: {
+ $size = (int)($payload / 8);
+ break;
+ }
+ default: {
+ $size = 0;
+ break;
+ }
+ }
+ $maxsize = $this->maximumWords($mode, $version);
+ if ($size < 0) {
+ $size = 0;
+ }
+ if ($size > $maxsize) {
+ $size = $maxsize;
+ }
+ return $size;
+ }
+
+ /**
+ * createBitStream
+ * @param array $items
+ * @return array of items and total bits
+ */
+ protected function createBitStream($items) {
+ $total = 0;
+ foreach ($items as $key => $item) {
+ $items[$key] = $this->encodeBitStream($item, $this->version);
+ $bits = count($items[$key]['bstream']);
+ $total += $bits;
+ }
+ return array($items, $total);
+ }
+
+ /**
+ * convertData
+ * @param array $items
+ * @return array items
+ */
+ protected function convertData($items) {
+ $ver = $this->estimateVersion($items);
+ if ($ver > $this->version) {
+ $this->version = $ver;
+ }
+ for (;;) {
+ $cbs = $this->createBitStream($items);
+ $items = $cbs[0];
+ $bits = $cbs[1];
+ if ($bits < 0) {
+ return -1;
+ }
+ $ver = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
+ if ($ver < 0) {
+ return -1;
+ } elseif ($ver > $this->version) {
+ $this->version = $ver;
+ } else {
+ break;
+ }
+ }
+ return $items;
+ }
+
+ /**
+ * Append Padding Bit to bitstream
+ * @param array $bstream
+ * @return array bitstream
+ */
+ protected function appendPaddingBit($bstream) {
+ $bits = count($bstream);
+ $maxwords = $this->getDataLength($this->version, $this->level);
+ $maxbits = $maxwords * 8;
+ if ($maxbits == $bits) {
+ return 0;
+ }
+ if ($maxbits - $bits < 5) {
+ return $this->appendNum($bstream, $maxbits - $bits, 0);
+ }
+ $bits += 4;
+ $words = (int)(($bits + 7) / 8);
+ $padding = array();
+ $padding = $this->appendNum($padding, $words * 8 - $bits + 4, 0);
+ $padlen = $maxwords - $words;
+ if ($padlen > 0) {
+ $padbuf = array();
+ for ($i=0; $i<$padlen; ++$i) {
+ $padbuf[$i] = ($i&1)?0x11:0xec;
+ }
+ $padding = $this->appendBytes($padding, $padlen, $padbuf);
+ }
+ return $this->appendBitstream($bstream, $padding);
+ }
+
+ /**
+ * mergeBitStream
+ * @param array $bstream
+ * @return array bitstream
+ */
+ protected function mergeBitStream($items) {
+ $items = $this->convertData($items);
+ $bstream = array();
+ foreach ($items as $item) {
+ $bstream = $this->appendBitstream($bstream, $item['bstream']);
+ }
+ return $bstream;
+ }
+
+ /**
+ * Returns a stream of bits.
+ * @param int $items
+ * @return array padded merged byte stream
+ */
+ protected function getBitStream($items) {
+ $bstream = $this->mergeBitStream($items);
+ return $this->appendPaddingBit($bstream);
+ }
+
+ /**
+ * Pack all bit streams padding bits into a byte array.
+ * @param int $items
+ * @return array padded merged byte stream
+ */
+ protected function getByteStream($items) {
+ $bstream = $this->getBitStream($items);
+ return $this->bitstreamToByte($bstream);
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRbitstream
+
+ /**
+ * Return an array with zeros
+ * @param int $setLength array size
+ * @return array
+ */
+ protected function allocate($setLength) {
+ return array_fill(0, $setLength, 0);
+ }
+
+ /**
+ * Return new bitstream from number
+ * @param int $bits number of bits
+ * @param int $num number
+ * @return array bitstream
+ */
+ protected function newFromNum($bits, $num) {
+ $bstream = $this->allocate($bits);
+ $mask = 1 << ($bits - 1);
+ for ($i=0; $i<$bits; ++$i) {
+ if ($num & $mask) {
+ $bstream[$i] = 1;
+ } else {
+ $bstream[$i] = 0;
+ }
+ $mask = $mask >> 1;
+ }
+ return $bstream;
+ }
+
+ /**
+ * Return new bitstream from bytes
+ * @param int $size size
+ * @param array $data bytes
+ * @return array bitstream
+ */
+ protected function newFromBytes($size, $data) {
+ $bstream = $this->allocate($size * 8);
+ $p=0;
+ for ($i=0; $i<$size; ++$i) {
+ $mask = 0x80;
+ for ($j=0; $j<8; ++$j) {
+ if ($data[$i] & $mask) {
+ $bstream[$p] = 1;
+ } else {
+ $bstream[$p] = 0;
+ }
+ $p++;
+ $mask = $mask >> 1;
+ }
+ }
+ return $bstream;
+ }
+
+ /**
+ * Append one bitstream to another
+ * @param array $bitstream original bitstream
+ * @param array $append bitstream to append
+ * @return array bitstream
+ */
+ protected function appendBitstream($bitstream, $append) {
+ if ((!is_array($append)) OR (count($append) == 0)) {
+ return $bitstream;
+ }
+ if (count($bitstream) == 0) {
+ return $append;
+ }
+ return array_values(array_merge($bitstream, $append));
+ }
+
+ /**
+ * Append one bitstream created from number to another
+ * @param array $bitstream original bitstream
+ * @param int $bits number of bits
+ * @param int $num number
+ * @return array bitstream
+ */
+ protected function appendNum($bitstream, $bits, $num) {
+ if ($bits == 0) {
+ return 0;
+ }
+ $b = $this->newFromNum($bits, $num);
+ return $this->appendBitstream($bitstream, $b);
+ }
+
+ /**
+ * Append one bitstream created from bytes to another
+ * @param array $bitstream original bitstream
+ * @param int $size size
+ * @param array $data bytes
+ * @return array bitstream
+ */
+ protected function appendBytes($bitstream, $size, $data) {
+ if ($size == 0) {
+ return 0;
+ }
+ $b = $this->newFromBytes($size, $data);
+ return $this->appendBitstream($bitstream, $b);
+ }
+
+ /**
+ * Convert bitstream to bytes
+ * @param array $bitstream original bitstream
+ * @return array of bytes
+ */
+ protected function bitstreamToByte($bstream) {
+ $size = count($bstream);
+ if ($size == 0) {
+ return array();
+ }
+ $data = array_fill(0, (int)(($size + 7) / 8), 0);
+ $bytes = (int)($size / 8);
+ $p = 0;
+ for ($i=0; $i<$bytes; $i++) {
+ $v = 0;
+ for ($j=0; $j<8; $j++) {
+ $v = $v << 1;
+ $v |= $bstream[$p];
+ $p++;
+ }
+ $data[$i] = $v;
+ }
+ if ($size & 7) {
+ $v = 0;
+ for ($j=0; $j<($size & 7); $j++) {
+ $v = $v << 1;
+ $v |= $bstream[$p];
+ $p++;
+ }
+ $data[$bytes] = $v;
+ }
+ return $data;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRspec
+
+ /**
+ * Replace a value on the array at the specified position
+ * @param array $srctab
+ * @param int $x X position
+ * @param int $y Y position
+ * @param string $repl value to replace
+ * @param int $replLen length of the repl string
+ * @return array srctab
+ */
+ protected function qrstrset($srctab, $x, $y, $repl, $replLen=false) {
+ $srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
+ return $srctab;
+ }
+
+ /**
+ * Return maximum data code length (bytes) for the version.
+ * @param int $version version
+ * @param int $level error correction level
+ * @return int maximum size (bytes)
+ */
+ protected function getDataLength($version, $level) {
+ return $this->capacity[$version][QRCAP_WORDS] - $this->capacity[$version][QRCAP_EC][$level];
+ }
+
+ /**
+ * Return maximum error correction code length (bytes) for the version.
+ * @param int $version version
+ * @param int $level error correction level
+ * @return int ECC size (bytes)
+ */
+ protected function getECCLength($version, $level){
+ return $this->capacity[$version][QRCAP_EC][$level];
+ }
+
+ /**
+ * Return the width of the symbol for the version.
+ * @param int $version version
+ * @return int width
+ */
+ protected function getWidth($version) {
+ return $this->capacity[$version][QRCAP_WIDTH];
+ }
+
+ /**
+ * Return the numer of remainder bits.
+ * @param int $version version
+ * @return int number of remainder bits
+ */
+ protected function getRemainder($version) {
+ return $this->capacity[$version][QRCAP_REMINDER];
+ }
+
+ /**
+ * Return a version number that satisfies the input code length.
+ * @param int $size input code length (byte)
+ * @param int $level error correction level
+ * @return int version number
+ */
+ protected function getMinimumVersion($size, $level) {
+ for ($i=1; $i <= QRSPEC_VERSION_MAX; ++$i) {
+ $words = $this->capacity[$i][QRCAP_WORDS] - $this->capacity[$i][QRCAP_EC][$level];
+ if ($words >= $size) {
+ return $i;
+ }
+ }
+ return -1;
+ }
+
+ /**
+ * Return the size of length indicator for the mode and version.
+ * @param int $mode encoding mode
+ * @param int $version version
+ * @return int the size of the appropriate length indicator (bits).
+ */
+ protected function lengthIndicator($mode, $version) {
+ if ($mode == QR_MODE_ST) {
+ return 0;
+ }
+ if ($version <= 9) {
+ $l = 0;
+ } elseif ($version <= 26) {
+ $l = 1;
+ } else {
+ $l = 2;
+ }
+ return $this->lengthTableBits[$mode][$l];
+ }
+
+ /**
+ * Return the maximum length for the mode and version.
+ * @param int $mode encoding mode
+ * @param int $version version
+ * @return int the maximum length (bytes)
+ */
+ protected function maximumWords($mode, $version) {
+ if ($mode == QR_MODE_ST) {
+ return 3;
+ }
+ if ($version <= 9) {
+ $l = 0;
+ } else if ($version <= 26) {
+ $l = 1;
+ } else {
+ $l = 2;
+ }
+ $bits = $this->lengthTableBits[$mode][$l];
+ $words = (1 << $bits) - 1;
+ if ($mode == QR_MODE_KJ) {
+ $words *= 2; // the number of bytes is required
+ }
+ return $words;
+ }
+
+ /**
+ * Return an array of ECC specification.
+ * @param int $version version
+ * @param int $level error correction level
+ * @param array $spec an array of ECC specification contains as following: {# of type1 blocks, # of data code, # of ecc code, # of type2 blocks, # of data code}
+ * @return array spec
+ */
+ protected function getEccSpec($version, $level, $spec) {
+ if (count($spec) < 5) {
+ $spec = array(0, 0, 0, 0, 0);
+ }
+ $b1 = $this->eccTable[$version][$level][0];
+ $b2 = $this->eccTable[$version][$level][1];
+ $data = $this->getDataLength($version, $level);
+ $ecc = $this->getECCLength($version, $level);
+ if ($b2 == 0) {
+ $spec[0] = $b1;
+ $spec[1] = (int)($data / $b1);
+ $spec[2] = (int)($ecc / $b1);
+ $spec[3] = 0;
+ $spec[4] = 0;
+ } else {
+ $spec[0] = $b1;
+ $spec[1] = (int)($data / ($b1 + $b2));
+ $spec[2] = (int)($ecc / ($b1 + $b2));
+ $spec[3] = $b2;
+ $spec[4] = $spec[1] + 1;
+ }
+ return $spec;
+ }
+
+ /**
+ * Put an alignment marker.
+ * @param array $frame frame
+ * @param int $width width
+ * @param int $ox X center coordinate of the pattern
+ * @param int $oy Y center coordinate of the pattern
+ * @return array frame
+ */
+ protected function putAlignmentMarker($frame, $ox, $oy) {
+ $finder = array(
+ "\xa1\xa1\xa1\xa1\xa1",
+ "\xa1\xa0\xa0\xa0\xa1",
+ "\xa1\xa0\xa1\xa0\xa1",
+ "\xa1\xa0\xa0\xa0\xa1",
+ "\xa1\xa1\xa1\xa1\xa1"
+ );
+ $yStart = $oy - 2;
+ $xStart = $ox - 2;
+ for ($y=0; $y < 5; $y++) {
+ $frame = $this->qrstrset($frame, $xStart, $yStart+$y, $finder[$y]);
+ }
+ return $frame;
+ }
+
+ /**
+ * Put an alignment pattern.
+ * @param int $version version
+ * @param array $fram frame
+ * @param int $width width
+ * @return array frame
+ */
+ protected function putAlignmentPattern($version, $frame, $width) {
+ if ($version < 2) {
+ return $frame;
+ }
+ $d = $this->alignmentPattern[$version][1] - $this->alignmentPattern[$version][0];
+ if ($d < 0) {
+ $w = 2;
+ } else {
+ $w = (int)(($width - $this->alignmentPattern[$version][0]) / $d + 2);
+ }
+ if ($w * $w - 3 == 1) {
+ $x = $this->alignmentPattern[$version][0];
+ $y = $this->alignmentPattern[$version][0];
+ $frame = $this->putAlignmentMarker($frame, $x, $y);
+ return $frame;
+ }
+ $cx = $this->alignmentPattern[$version][0];
+ $wo = $w - 1;
+ for ($x=1; $x < $wo; ++$x) {
+ $frame = $this->putAlignmentMarker($frame, 6, $cx);
+ $frame = $this->putAlignmentMarker($frame, $cx, 6);
+ $cx += $d;
+ }
+ $cy = $this->alignmentPattern[$version][0];
+ for ($y=0; $y < $wo; ++$y) {
+ $cx = $this->alignmentPattern[$version][0];
+ for ($x=0; $x < $wo; ++$x) {
+ $frame = $this->putAlignmentMarker($frame, $cx, $cy);
+ $cx += $d;
+ }
+ $cy += $d;
+ }
+ return $frame;
+ }
+
+ /**
+ * Return BCH encoded version information pattern that is used for the symbol of version 7 or greater. Use lower 18 bits.
+ * @param int $version version
+ * @return BCH encoded version information pattern
+ */
+ protected function getVersionPattern($version) {
+ if (($version < 7) OR ($version > QRSPEC_VERSION_MAX)) {
+ return 0;
+ }
+ return $this->versionPattern[($version - 7)];
+ }
+
+ /**
+ * Return BCH encoded format information pattern.
+ * @param array $mask
+ * @param int $level error correction level
+ * @return BCH encoded format information pattern
+ */
+ protected function getFormatInfo($mask, $level) {
+ if (($mask < 0) OR ($mask > 7)) {
+ return 0;
+ }
+ if (($level < 0) OR ($level > 3)) {
+ return 0;
+ }
+ return $this->formatInfo[$level][$mask];
+ }
+
+ /**
+ * Put a finder pattern.
+ * @param array $frame frame
+ * @param int $width width
+ * @param int $ox X center coordinate of the pattern
+ * @param int $oy Y center coordinate of the pattern
+ * @return array frame
+ */
+ protected function putFinderPattern($frame, $ox, $oy) {
+ $finder = array(
+ "\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
+ "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
+ "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
+ "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
+ "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
+ "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
+ "\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
+ );
+ for ($y=0; $y < 7; $y++) {
+ $frame = $this->qrstrset($frame, $ox, ($oy + $y), $finder[$y]);
+ }
+ return $frame;
+ }
+
+ /**
+ * Return a copy of initialized frame.
+ * @param int $version version
+ * @return Array of unsigned char.
+ */
+ protected function createFrame($version) {
+ $width = $this->capacity[$version][QRCAP_WIDTH];
+ $frameLine = str_repeat ("\0", $width);
+ $frame = array_fill(0, $width, $frameLine);
+ // Finder pattern
+ $frame = $this->putFinderPattern($frame, 0, 0);
+ $frame = $this->putFinderPattern($frame, $width - 7, 0);
+ $frame = $this->putFinderPattern($frame, 0, $width - 7);
+ // Separator
+ $yOffset = $width - 7;
+ for ($y=0; $y < 7; ++$y) {
+ $frame[$y][7] = "\xc0";
+ $frame[$y][$width - 8] = "\xc0";
+ $frame[$yOffset][7] = "\xc0";
+ ++$yOffset;
+ }
+ $setPattern = str_repeat("\xc0", 8);
+ $frame = $this->qrstrset($frame, 0, 7, $setPattern);
+ $frame = $this->qrstrset($frame, $width-8, 7, $setPattern);
+ $frame = $this->qrstrset($frame, 0, $width - 8, $setPattern);
+ // Format info
+ $setPattern = str_repeat("\x84", 9);
+ $frame = $this->qrstrset($frame, 0, 8, $setPattern);
+ $frame = $this->qrstrset($frame, $width - 8, 8, $setPattern, 8);
+ $yOffset = $width - 8;
+ for ($y=0; $y < 8; ++$y,++$yOffset) {
+ $frame[$y][8] = "\x84";
+ $frame[$yOffset][8] = "\x84";
+ }
+ // Timing pattern
+ $wo = $width - 15;
+ for ($i=1; $i < $wo; ++$i) {
+ $frame[6][7+$i] = chr(0x90 | ($i & 1));
+ $frame[7+$i][6] = chr(0x90 | ($i & 1));
+ }
+ // Alignment pattern
+ $frame = $this->putAlignmentPattern($version, $frame, $width);
+ // Version information
+ if ($version >= 7) {
+ $vinf = $this->getVersionPattern($version);
+ $v = $vinf;
+ for ($x=0; $x<6; ++$x) {
+ for ($y=0; $y<3; ++$y) {
+ $frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));
+ $v = $v >> 1;
+ }
+ }
+ $v = $vinf;
+ for ($y=0; $y<6; ++$y) {
+ for ($x=0; $x<3; ++$x) {
+ $frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));
+ $v = $v >> 1;
+ }
+ }
+ }
+ // and a little bit...
+ $frame[$width - 8][8] = "\x81";
+ return $frame;
+ }
+
+ /**
+ * Set new frame for the specified version.
+ * @param int $version version
+ * @return Array of unsigned char.
+ */
+ protected function newFrame($version) {
+ if (($version < 1) OR ($version > QRSPEC_VERSION_MAX)) {
+ return NULL;
+ }
+ if (!isset($this->frames[$version])) {
+ $this->frames[$version] = $this->createFrame($version);
+ }
+ if (is_null($this->frames[$version])) {
+ return NULL;
+ }
+ return $this->frames[$version];
+ }
+
+ /**
+ * Return block number 0
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsBlockNum($spec) {
+ return ($spec[0] + $spec[3]);
+ }
+
+ /**
+ * Return block number 1
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsBlockNum1($spec) {
+ return $spec[0];
+ }
+
+ /**
+ * Return data codes 1
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsDataCodes1($spec) {
+ return $spec[1];
+ }
+
+ /**
+ * Return ecc codes 1
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsEccCodes1($spec) {
+ return $spec[2];
+ }
+
+ /**
+ * Return block number 2
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsBlockNum2($spec) {
+ return $spec[3];
+ }
+
+ /**
+ * Return data codes 2
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsDataCodes2($spec) {
+ return $spec[4];
+ }
+
+ /**
+ * Return ecc codes 2
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsEccCodes2($spec) {
+ return $spec[2];
+ }
+
+ /**
+ * Return data length
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsDataLength($spec) {
+ return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);
+ }
+
+ /**
+ * Return ecc length
+ * @param array $spec
+ * @return int value
+ */
+ protected function rsEccLength($spec) {
+ return ($spec[0] + $spec[3]) * $spec[2];
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRrs
+
+ /**
+ * Initialize a Reed-Solomon codec and add it to existing rsitems
+ * @param int $symsize symbol size, bits
+ * @param int $gfpoly Field generator polynomial coefficients
+ * @param int $fcr first root of RS code generator polynomial, index form
+ * @param int $prim primitive element to generate polynomial roots
+ * @param int $nroots RS code generator polynomial degree (number of roots)
+ * @param int $pad padding bytes at front of shortened block
+ * @return array Array of RS values:<ul><li>mm = Bits per symbol;</li><li>nn = Symbols per block;</li><li>alpha_to = log lookup table array;</li><li>index_of = Antilog lookup table array;</li><li>genpoly = Generator polynomial array;</li><li>nroots = Number of generator;</li><li>roots = number of parity symbols;</li><li>fcr = First consecutive root, index form;</li><li>prim = Primitive element, index form;</li><li>iprim = prim-th root of 1, index form;</li><li>pad = Padding bytes in shortened block;</li><li>gfpoly</ul>.
+ */
+ protected function init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {
+ foreach ($this->rsitems as $rs) {
+ if (($rs['pad'] != $pad) OR ($rs['nroots'] != $nroots) OR ($rs['mm'] != $symsize)
+ OR ($rs['gfpoly'] != $gfpoly) OR ($rs['fcr'] != $fcr) OR ($rs['prim'] != $prim)) {
+ continue;
+ }
+ return $rs;
+ }
+ $rs = $this->init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);
+ array_unshift($this->rsitems, $rs);
+ return $rs;
+ }
+
+ // - - - - - - - - - - - - - - - - - - - - - - - - -
+
+ // QRrsItem
+
+ /**
+ * modnn
+ * @param array RS values
+ * @param int $x X position
+ * @return int X osition
+ */
+ protected function modnn($rs, $x) {
+ while ($x >= $rs['nn']) {
+ $x -= $rs['nn'];
+ $x = ($x >> $rs['mm']) + ($x & $rs['nn']);
+ }
+ return $x;
+ }
+
+ /**
+ * Initialize a Reed-Solomon codec and returns an array of values.
+ * @param int $symsize symbol size, bits
+ * @param int $gfpoly Field generator polynomial coefficients
+ * @param int $fcr first root of RS code generator polynomial, index form
+ * @param int $prim primitive element to generate polynomial roots
+ * @param int $nroots RS code generator polynomial degree (number of roots)
+ * @param int $pad padding bytes at front of shortened block
+ * @return array Array of RS values:<ul><li>mm = Bits per symbol;</li><li>nn = Symbols per block;</li><li>alpha_to = log lookup table array;</li><li>index_of = Antilog lookup table array;</li><li>genpoly = Generator polynomial array;</li><li>nroots = Number of generator;</li><li>roots = number of parity symbols;</li><li>fcr = First consecutive root, index form;</li><li>prim = Primitive element, index form;</li><li>iprim = prim-th root of 1, index form;</li><li>pad = Padding bytes in shortened block;</li><li>gfpoly</ul>.
+ */
+ protected function init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {
+ // Based on Reed solomon encoder by Phil Karn, KA9Q (GNU-LGPLv2)
+ $rs = null;
+ // Check parameter ranges
+ if (($symsize < 0) OR ($symsize > 8)) {
+ return $rs;
+ }
+ if (($fcr < 0) OR ($fcr >= (1<<$symsize))) {
+ return $rs;
+ }
+ if (($prim <= 0) OR ($prim >= (1<<$symsize))) {
+ return $rs;
+ }
+ if (($nroots < 0) OR ($nroots >= (1<<$symsize))) {
+ return $rs;
+ }
+ if (($pad < 0) OR ($pad >= ((1<<$symsize) -1 - $nroots))) {
+ return $rs;
+ }
+ $rs = array();
+ $rs['mm'] = $symsize;
+ $rs['nn'] = (1 << $symsize) - 1;
+ $rs['pad'] = $pad;
+ $rs['alpha_to'] = array_fill(0, ($rs['nn'] + 1), 0);
+ $rs['index_of'] = array_fill(0, ($rs['nn'] + 1), 0);
+ // PHP style macro replacement ;)
+ $NN =& $rs['nn'];
+ $A0 =& $NN;
+ // Generate Galois field lookup tables
+ $rs['index_of'][0] = $A0; // log(zero) = -inf
+ $rs['alpha_to'][$A0] = 0; // alpha**-inf = 0
+ $sr = 1;
+ for ($i=0; $i<$rs['nn']; ++$i) {
+ $rs['index_of'][$sr] = $i;
+ $rs['alpha_to'][$i] = $sr;
+ $sr <<= 1;
+ if ($sr & (1 << $symsize)) {
+ $sr ^= $gfpoly;
+ }
+ $sr &= $rs['nn'];
+ }
+ if ($sr != 1) {
+ // field generator polynomial is not primitive!
+ return NULL;
+ }
+ // Form RS code generator polynomial from its roots
+ $rs['genpoly'] = array_fill(0, ($nroots + 1), 0);
+ $rs['fcr'] = $fcr;
+ $rs['prim'] = $prim;
+ $rs['nroots'] = $nroots;
+ $rs['gfpoly'] = $gfpoly;
+ // Find prim-th root of 1, used in decoding
+ for ($iprim=1; ($iprim % $prim) != 0; $iprim += $rs['nn']) {
+ ; // intentional empty-body loop!
+ }
+ $rs['iprim'] = (int)($iprim / $prim);
+ $rs['genpoly'][0] = 1;
+
+
+ for ($i = 0,$root=$fcr*$prim; $i < $nroots; $i++, $root += $prim) {
+ $rs['genpoly'][$i+1] = 1;
+ // Multiply rs->genpoly[] by @**(root + x)
+ for ($j = $i; $j > 0; --$j) {
+ if ($rs['genpoly'][$j] != 0) {
+ $rs['genpoly'][$j] = $rs['genpoly'][$j-1] ^ $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][$j]] + $root)];
+ } else {
+ $rs['genpoly'][$j] = $rs['genpoly'][$j-1];
+ }
+ }
+ // rs->genpoly[0] can never be zero
+ $rs['genpoly'][0] = $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][0]] + $root)];
+ }
+ // convert rs->genpoly[] to index form for quicker encoding
+ for ($i = 0; $i <= $nroots; ++$i) {
+ $rs['genpoly'][$i] = $rs['index_of'][$rs['genpoly'][$i]];
+ }
+ return $rs;
+ }
+
+ /**
+ * Encode a Reed-Solomon codec and returns the parity array
+ * @param array $rs RS values
+ * @param array $data data
+ * @param array $parity parity
+ * @return parity array
+ */
+ protected function encode_rs_char($rs, $data, $parity) {
+ $MM =& $rs['mm']; // bits per symbol
+ $NN =& $rs['nn']; // the total number of symbols in a RS block
+ $ALPHA_TO =& $rs['alpha_to']; // the address of an array of NN elements to convert Galois field elements in index (log) form to polynomial form
+ $INDEX_OF =& $rs['index_of']; // the address of an array of NN elements to convert Galois field elements in polynomial form to index (log) form
+ $GENPOLY =& $rs['genpoly']; // an array of NROOTS+1 elements containing the generator polynomial in index form
+ $NROOTS =& $rs['nroots']; // the number of roots in the RS code generator polynomial, which is the same as the number of parity symbols in a block
+ $FCR =& $rs['fcr']; // first consecutive root, index form
+ $PRIM =& $rs['prim']; // primitive element, index form
+ $IPRIM =& $rs['iprim']; // prim-th root of 1, index form
+ $PAD =& $rs['pad']; // the number of pad symbols in a block
+ $A0 =& $NN;
+ $parity = array_fill(0, $NROOTS, 0);
+ for ($i=0; $i < ($NN - $NROOTS - $PAD); $i++) {
+ $feedback = $INDEX_OF[$data[$i] ^ $parity[0]];
+ if ($feedback != $A0) {
+ // feedback term is non-zero
+ // This line is unnecessary when GENPOLY[NROOTS] is unity, as it must
+ // always be for the polynomials constructed by init_rs()
+ $feedback = $this->modnn($rs, $NN - $GENPOLY[$NROOTS] + $feedback);
+ for ($j=1; $j < $NROOTS; ++$j) {
+ $parity[$j] ^= $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[($NROOTS - $j)])];
+ }
+ }
+ // Shift
+ array_shift($parity);
+ if ($feedback != $A0) {
+ array_push($parity, $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[0])]);
+ } else {
+ array_push($parity, 0);
+ }
+ }
+ return $parity;
+ }
+
+ } // end QRcode class
+
+} // END OF "class_exists QRcode"
+?>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 07:49:36 +0000