Rearrange php libs/includes and produce sitemap.xml
[busui.git] / lib / tcpdf / qrcode.php
blob:a/lib/tcpdf/qrcode.php -> blob:b/lib/tcpdf/qrcode.php
--- a/lib/tcpdf/qrcode.php
+++ b/lib/tcpdf/qrcode.php
@@ -1,1 +1,2867 @@
-
+<?php
+//============================================================+
+// File name   : qrcode.php
+// Version     : 1.0.009
+// Begin       : 2010-03-22
+// Last Update : 2010-12-16
+// Author      : Nicola Asuni - Tecnick.com S.r.l - Via Della Pace, 11 - 09044 - Quartucciu (CA) - ITALY - www.tecnick.com - info@tecnick.com
+// License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
+// -------------------------------------------------------------------
+// Copyright (C) 2010-2010  Nicola Asuni - Tecnick.com S.r.l.
+//
+// This file is part of TCPDF software library.
+//
+// TCPDF 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 (at your option) any later version.
+//
+// TCPDF 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 TCPDF.  If not, see <http://www.gnu.org/licenses/>.
+//
+// See LICENSE.TXT file for more information.
+// -------------------------------------------------------------------
+//
+// 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
+// ---------------------------------------------------------
+//============================================================+
+
+/**
+ * @file
+ * 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
+ * @author Nicola Asuni
+ * @version 1.0.009
+ */
+
+// 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
+
+// #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
+
+// for compatibility with PHP4
+if (!function_exists('str_split')) {
+	/**
+	 * Convert a string to an array (needed for PHP4 compatibility)
+	 * @param $string (string) The input string.
+	 * @param $split_length (int) Maximum length of the chunk.
+	 * @return  If the optional split_length  parameter is specified, the returned array will be broken down into chunks with each being split_length  in length, otherwise each chunk will be one character in length. FALSE is returned if split_length is less than 1. If the split_length length exceeds the length of string , the entire string is returned as the first (and only) array element.
+	 */
+	function str_split($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 QRcode
+ * 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
+ * @author Nicola Asuni
+ * @version 1.0.009
+ */
+class QRcode {
+
+	/**
+	 * Barcode array to be returned which is readable by TCPDF.
+	 * @protected
+	 */
+	protected $barcode_array = array();
+
+	/**
+	 * 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.
+	 * @protected
+	 */
+	protected $version = 0;
+
+	/**
+	 * Levels of error correction. See definitions for possible values.
+	 * @protected
+	 */
+	protected $level = QR_ECLEVEL_L;
+
+	/**
+	 * Encoding mode.
+	 * @protected
+	 */
+	protected $hint = QR_MODE_8B;
+
+	/**
+	 * Boolean flag, if true the input string will be converted to uppercase.
+	 * @protected
+	 */
+	protected $casesensitive = true;
+
+	/**
+	 * Structured QR code (not supported yet).
+	 * @protected
+	 */
+	protected $structured = 0;
+
+	/**
+	 * Mask data.
+	 * @protected
+	 */
+	protected $data;
+
+	// FrameFiller
+
+	/**
+	 * Width.
+	 * @protected
+	 */
+	protected $width;
+
+	/**
+	 * Frame.
+	 * @protected
+	 */
+	protected $frame;
+
+	/**
+	 * X position of bit.
+	 * @protected
+	 */
+	protected $x;
+
+	/**
+	 * Y position of bit.
+	 * @protected
+	 */
+	protected $y;
+
+	/**
+	 * Direction.
+	 * @protected
+	 */
+	protected $dir;
+
+	/**
+	 * Single bit value.
+	 * @protected
+	 */
+	protected $bit;
+
+	// ---- QRrawcode ----
+
+	/**
+	 * Data code.
+	 * @protected
+	 */
+	protected $datacode = array();
+
+	/**
+	 * Error correction code.
+	 * @protected
+	 */
+	protected $ecccode = array();
+
+	/**
+	 * Blocks.
+	 * @protected
+	 */
+	protected $blocks;
+
+	/**
+	 * Reed-Solomon blocks.
+	 * @protected
+	 */
+	protected $rsblocks = array(); //of RSblock
+
+	/**
+	 * Counter.
+	 * @protected
+	 */
+	protected $count;
+
+	/**
+	 * Data length.
+	 * @protected
+	 */
+	protected $dataLength;
+
+	/**
+	 * Error correction length.
+	 * @protected
+	 */
+	protected $eccLength;
+
+	/**
+	 * Value b1.
+	 * @protected
+	 */
+	protected $b1;
+
+	// ---- QRmask ----
+
+	/**
+	 * Run length.
+	 * @protected
+	 */
+	protected $runLength = array();
+
+	// ---- QRsplit ----
+
+	/**
+	 * Input data string.
+	 * @protected
+	 */
+	protected $dataStr = '';
+
+	/**
+	 * Input items.
+	 * @protected
+	 */
+	protected $items;
+
+	// Reed-Solomon items
+
+	/**
+	 * Reed-Solomon items.
+	 * @protected
+	 */
+	protected $rsitems = array();
+
+	/**
+	 * Array of frames.
+	 * @protected
+	 */
+	protected $frames = array();
+
+	/**
+	 * Alphabet-numeric convesion table.
+	 * @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  //
+		);
+
+	/**
+	 * Array Table of the capacity of symbols.
+	 * See Table 1 (pp.13) and Table 12-16 (pp.30-36), JIS X0510:2004.
+	 * @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
+	);
+
+	/**
+	 * Array Length indicator.
+	 * @protected
+	 */
+	protected $lengthTableBits = array(
+		array(10, 12, 14),
+		array( 9, 11, 13),
+		array( 8, 16, 16),
+		array( 8, 10, 12)
+	);
+
+	/**
+	 * Array Table of the error correction code (Reed-Solomon block).
+	 * See Table 12-16 (pp.30-36), JIS X0510:2004.
+	 * @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
+	);
+
+	/**
+	 * 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.
+	 * @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
+	);
+
+	/**
+	 * Array Version information pattern (BCH coded).
+	 * See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
+	 * size: [QRSPEC_VERSION_MAX - 6]
+	 * @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
+	);
+
+	/**
+	 * Array Format information
+	 * @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 $code (string) code to represent using QRcode
+	 * @param $eclevel (string) error level: <ul><li>L : About 7% or less errors can be corrected.</li><li>M : About 15% or less errors can be corrected.</li><li>Q : About 25% or less errors can be corrected.</li><li>H : About 30% or less errors can be corrected.</li></ul>
+	 * @public
+	 * @since 1.0.000
+	 */
+	public function __construct($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);
+		if (is_null($this->data)) {
+			return false;
+		}
+		$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;
+	 * @public
+	 */
+	public function getBarcodeArray() {
+		return $this->barcode_array;
+	}
+
+	/**
+	 * Convert the frame in binary form
+	 * @param $frame (array) array to binarize
+	 * @return array frame in binary form
+	 */
+	protected function binarize($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 $mask (int) masking mode
+	 */
+	protected function encodeMask($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 $at (array) x,y position
+	 * @param $val (int) value of the character to set
+	 */
+	protected function setFrameAt($at, $val) {
+		$this->frame[$at['y']][$at['x']] = chr($val);
+	}
+
+	/**
+	 * Get frame value at specified position
+	 * @param $at (array) x,y position
+	 * @return value at specified position
+	 */
+	protected function getFrameAt($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 $spec (array) array of ECC specification
+	 * @return 0 in case of success, -1 in case of error
+	 */
+	protected function init($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->dat