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qrcode.php
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<?php
//============================================================+
// File name : qrcode.php
// Begin : 2010-03-22
// Last Update : 2010-03-30
// Version : 1.0.003
// 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
//============================================================+
/**
* 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 1.0.003
*/
// 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;
}
/**