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<?php
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//============================================================+
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// File name : datamatrix.php
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// Version : 1.0.004
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// Begin : 2010-06-07
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// Last Update : 2013-02-04
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// Author : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
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// License : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
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// -------------------------------------------------------------------
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// Copyright (C) 2010-2012 Nicola Asuni - Tecnick.com LTD
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//
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// This file is part of TCPDF software library.
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//
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// TCPDF is free software: you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// TCPDF is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with TCPDF. If not, see <http://www.gnu.org/licenses/>.
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//
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// See LICENSE.TXT file for more information.
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// -------------------------------------------------------------------
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//
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// DESCRIPTION :
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//
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// Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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// DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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//============================================================+
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/**
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* @file
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* Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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* DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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*
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* @package com.tecnick.tcpdf
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* @author Nicola Asuni
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* @version 1.0.004
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*/
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// custom definitions
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if (!defined('DATAMATRIXDEFS')) {
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/**
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* Indicate that definitions for this class are set
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*/
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define('DATAMATRIXDEFS', true);
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// -----------------------------------------------------
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} // end of custom definitions
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// #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
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/**
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* ASCII encoding: ASCII character 0 to 127 (1 byte per CW)
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*/
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define('ENC_ASCII', 0);
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/**
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* C40 encoding: Upper-case alphanumeric (3/2 bytes per CW)
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*/
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define('ENC_C40', 1);
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/**
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* TEXT encoding: Lower-case alphanumeric (3/2 bytes per CW)
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*/
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define('ENC_TXT', 2);
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/**
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* X12 encoding: ANSI X12 (3/2 byte per CW)
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*/
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define('ENC_X12', 3);
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/**
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* EDIFACT encoding: ASCII character 32 to 94 (4/3 bytes per CW)
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*/
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define('ENC_EDF', 4);
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/**
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* BASE 256 encoding: ASCII character 0 to 255 (1 byte per CW)
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*/
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define('ENC_BASE256', 5);
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/**
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* ASCII extended encoding: ASCII character 128 to 255 (1/2 byte per CW)
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*/
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define('ENC_ASCII_EXT', 6);
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/**
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* ASCII number encoding: ASCII digits (2 bytes per CW)
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*/
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define('ENC_ASCII_NUM', 7);
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/**
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* @class Datamatrix
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* Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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* DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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*
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* @package com.tecnick.tcpdf
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* @author Nicola Asuni
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* @version 1.0.004
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*/
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class Datamatrix {
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/**
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* Barcode array to be returned which is readable by TCPDF.
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* @protected
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*/
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protected $barcode_array = array();
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/**
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* Store last used encoding for data codewords.
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* @protected
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*/
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protected $last_enc = ENC_ASCII;
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/**
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* Table of Data Matrix ECC 200 Symbol Attributes:<ul>
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* <li>total matrix rows (including finder pattern)</li>
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* <li>total matrix cols (including finder pattern)</li>
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* <li>total matrix rows (without finder pattern)</li>
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* <li>total matrix cols (without finder pattern)</li>
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* <li>region data rows (with finder pattern)</li>
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* <li>region data col (with finder pattern)</li>
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* <li>region data rows (without finder pattern)</li>
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* <li>region data col (without finder pattern)</li>
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* <li>horizontal regions</li>
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* <li>vertical regions</li>
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* <li>regions</li>
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* <li>data codewords</li>
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* <li>error codewords</li>
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* <li>blocks</li>
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* <li>data codewords per block</li>
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* <li>error codewords per block</li>
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* </ul>
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* @protected
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*/
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protected $symbattr = array(
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// square form ---------------------------------------------------------------------------------------
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array(0x00a,0x00a,0x008,0x008,0x00a,0x00a,0x008,0x008,0x001,0x001,0x001,0x003,0x005,0x001,0x003,0x005), // 10x10
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array(0x00c,0x00c,0x00a,0x00a,0x00c,0x00c,0x00a,0x00a,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 12x12
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array(0x00e,0x00e,0x00c,0x00c,0x00e,0x00e,0x00c,0x00c,0x001,0x001,0x001,0x008,0x00a,0x001,0x008,0x00a), // 14x14
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array(0x010,0x010,0x00e,0x00e,0x010,0x010,0x00e,0x00e,0x001,0x001,0x001,0x00c,0x00c,0x001,0x00c,0x00c), // 16x16
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array(0x012,0x012,0x010,0x010,0x012,0x012,0x010,0x010,0x001,0x001,0x001,0x012,0x00e,0x001,0x012,0x00e), // 18x18
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array(0x014,0x014,0x012,0x012,0x014,0x014,0x012,0x012,0x001,0x001,0x001,0x016,0x012,0x001,0x016,0x012), // 20x20
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array(0x016,0x016,0x014,0x014,0x016,0x016,0x014,0x014,0x001,0x001,0x001,0x01e,0x014,0x001,0x01e,0x014), // 22x22
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array(0x018,0x018,0x016,0x016,0x018,0x018,0x016,0x016,0x001,0x001,0x001,0x024,0x018,0x001,0x024,0x018), // 24x24
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array(0x01a,0x01a,0x018,0x018,0x01a,0x01a,0x018,0x018,0x001,0x001,0x001,0x02c,0x01c,0x001,0x02c,0x01c), // 26x26
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array(0x020,0x020,0x01c,0x01c,0x010,0x010,0x00e,0x00e,0x002,0x002,0x004,0x03e,0x024,0x001,0x03e,0x024), // 32x32
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array(0x024,0x024,0x020,0x020,0x012,0x012,0x010,0x010,0x002,0x002,0x004,0x056,0x02a,0x001,0x056,0x02a), // 36x36
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array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40
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array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44
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array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48
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array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52
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array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64
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array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72
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array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80
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array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88
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array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96
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array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104
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array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120
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array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132
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array(0x090,0x090,0x084,0x084,0x018,0x018,0x016,0x016,0x006,0x006,0x024,0x616,0x26c,0x00a,0x09c,0x03e), // 144x144
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// rectangular form (currently unused) ---------------------------------------------------------------------------
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array(0x008,0x012,0x006,0x010,0x008,0x012,0x006,0x010,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 8x18
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array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32
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array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26
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array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36
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array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36
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array(0x010,0x030,0x00e,0x02c,0x010,0x018,0x00e,0x016,0x001,0x002,0x002,0x031,0x01c,0x001,0x031,0x01c) // 16x48
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);
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/**
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* Map encodation modes whit character sets.
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* @protected
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*/
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protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12');
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/**
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* Basic set of characters for each encodation mode.
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* @protected
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*/
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protected $chset = array(
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'C40' => array( // Basic set for C40 ----------------------------------------------------------------------------
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'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
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0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, //
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0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, //
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0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27),//
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'TXT' => array( // Basic set for TEXT ---------------------------------------------------------------------------
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'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
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0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, //
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0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, //
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0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),//
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'SH1' => array( // Shift 1 set ----------------------------------------------------------------------------------
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0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, //
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0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, //
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0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, //
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0x1e=>0x1e,0x1f=>0x1f), //
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'SH2' => array( // Shift 2 set ----------------------------------------------------------------------------------
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0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, //
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0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, //
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0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), //
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'S3C' => array( // Shift 3 set for C40 --------------------------------------------------------------------------
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0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, //
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0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, //
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0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, //
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0x7e=>0x1e,0x7f=>0x1f),
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'S3T' => array( // Shift 3 set for TEXT -------------------------------------------------------------------------
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|
|
216 |
0x60=>0x00,0x41=>0x01,0x42=>0x02,0x43=>0x03,0x44=>0x04,0x45=>0x05,0x46=>0x06,0x47=>0x07,0x48=>0x08,0x49=>0x09, //
|
|
|
217 |
0x4a=>0x0a,0x4b=>0x0b,0x4c=>0x0c,0x4d=>0x0d,0x4e=>0x0e,0x4f=>0x0f,0x50=>0x10,0x51=>0x11,0x52=>0x12,0x53=>0x13, //
|
|
|
218 |
0x54=>0x14,0x55=>0x15,0x56=>0x16,0x57=>0x17,0x58=>0x18,0x59=>0x19,0x5a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, //
|
|
|
219 |
0x7e=>0x1e,0x7f=>0x1f), //
|
|
|
220 |
'X12' => array( // Set for X12 ----------------------------------------------------------------------------------
|
|
|
221 |
0x0d=>0x00,0x2a=>0x01,0x3e=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
|
|
|
222 |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, //
|
|
|
223 |
0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, //
|
|
|
224 |
0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27) //
|
|
|
225 |
);
|
|
|
226 |
|
|
|
227 |
// -----------------------------------------------------------------------------
|
|
|
228 |
|
|
|
229 |
/**
|
|
|
230 |
* This is the class constructor.
|
|
|
231 |
* Creates a datamatrix object
|
|
|
232 |
* @param $code (string) Code to represent using Datamatrix.
|
|
|
233 |
* @public
|
|
|
234 |
*/
|
|
|
235 |
public function __construct($code) {
|
|
|
236 |
$barcode_array = array();
|
|
|
237 |
if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {
|
|
|
238 |
return false;
|
|
|
239 |
}
|
|
|
240 |
// get data codewords
|
|
|
241 |
$cw = $this->getHighLevelEncoding($code);
|
|
|
242 |
// number of data codewords
|
|
|
243 |
$nd = count($cw);
|
|
|
244 |
// check size
|
|
|
245 |
if ($nd > 1558) {
|
|
|
246 |
return false;
|
|
|
247 |
}
|
|
|
248 |
// get minimum required matrix size.
|
|
|
249 |
foreach ($this->symbattr as $params) {
|
|
|
250 |
if ($params[11] >= $nd) {
|
|
|
251 |
break;
|
|
|
252 |
}
|
|
|
253 |
}
|
|
|
254 |
if ($params[11] < $nd) {
|
|
|
255 |
// too much data
|
|
|
256 |
return false;
|
|
|
257 |
} elseif ($params[11] > $nd) {
|
|
|
258 |
// add padding
|
|
|
259 |
if ($this->last_enc == ENC_EDF) {
|
|
|
260 |
// switch to ASCII encoding
|
|
|
261 |
$cw[] = 124;
|
|
|
262 |
++$nd;
|
|
|
263 |
} elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) {
|
|
|
264 |
// switch to ASCII encoding
|
|
|
265 |
$cw[] = 254;
|
|
|
266 |
++$nd;
|
|
|
267 |
}
|
|
|
268 |
if ($params[11] > $nd) {
|
|
|
269 |
// add first pad
|
|
|
270 |
$cw[] = 129;
|
|
|
271 |
++$nd;
|
|
|
272 |
// add remaining pads
|
|
|
273 |
for ($i = $nd; $i < $params[11]; ++$i) {
|
|
|
274 |
$cw[] = $this->get253StateCodeword(129, $i);
|
|
|
275 |
}
|
|
|
276 |
}
|
|
|
277 |
}
|
|
|
278 |
// add error correction codewords
|
|
|
279 |
$cw = $this->getErrorCorrection($cw, $params[13], $params[14], $params[15]);
|
|
|
280 |
// initialize empty arrays
|
|
|
281 |
$grid = array_fill(0, ($params[2] * $params[3]), 0);
|
|
|
282 |
// get placement map
|
|
|
283 |
$places = $this->getPlacementMap($params[2], $params[3]);
|
|
|
284 |
// fill the grid with data
|
|
|
285 |
$grid = array();
|
|
|
286 |
$i = 0;
|
|
|
287 |
// region data row max index
|
|
|
288 |
$rdri = ($params[4] - 1);
|
|
|
289 |
// region data column max index
|
|
|
290 |
$rdci = ($params[5] - 1);
|
|
|
291 |
// for each vertical region
|
|
|
292 |
for ($vr = 0; $vr < $params[9]; ++$vr) {
|
|
|
293 |
// for each row on region
|
|
|
294 |
for ($r = 0; $r < $params[4]; ++$r) {
|
|
|
295 |
// get row
|
|
|
296 |
$row = (($vr * $params[4]) + $r);
|
|
|
297 |
// for each horizontal region
|
|
|
298 |
for ($hr = 0; $hr < $params[8]; ++$hr) {
|
|
|
299 |
// for each column on region
|
|
|
300 |
for ($c = 0; $c < $params[5]; ++$c) {
|
|
|
301 |
// get column
|
|
|
302 |
$col = (($hr * $params[5]) + $c);
|
|
|
303 |
// braw bits by case
|
|
|
304 |
if ($r == 0) {
|
|
|
305 |
// top finder pattern
|
|
|
306 |
if ($c % 2) {
|
|
|
307 |
$grid[$row][$col] = 0;
|
|
|
308 |
} else {
|
|
|
309 |
$grid[$row][$col] = 1;
|
|
|
310 |
}
|
|
|
311 |
} elseif ($r == $rdri) {
|
|
|
312 |
// bottom finder pattern
|
|
|
313 |
$grid[$row][$col] = 1;
|
|
|
314 |
} elseif ($c == 0) {
|
|
|
315 |
// left finder pattern
|
|
|
316 |
$grid[$row][$col] = 1;
|
|
|
317 |
} elseif ($c == $rdci) {
|
|
|
318 |
// right finder pattern
|
|
|
319 |
if ($r % 2) {
|
|
|
320 |
$grid[$row][$col] = 1;
|
|
|
321 |
} else {
|
|
|
322 |
$grid[$row][$col] = 0;
|
|
|
323 |
}
|
|
|
324 |
} else { // data bit
|
|
|
325 |
if ($places[$i] < 2) {
|
|
|
326 |
$grid[$row][$col] = $places[$i];
|
|
|
327 |
} else {
|
|
|
328 |
// codeword ID
|
|
|
329 |
$cw_id = (floor($places[$i] / 10) - 1);
|
|
|
330 |
// codeword BIT mask
|
|
|
331 |
$cw_bit = pow(2, (8 - ($places[$i] % 10)));
|
|
|
332 |
$grid[$row][$col] = (($cw[$cw_id] & $cw_bit) == 0) ? 0 : 1;
|
|
|
333 |
}
|
|
|
334 |
++$i;
|
|
|
335 |
}
|
|
|
336 |
}
|
|
|
337 |
}
|
|
|
338 |
}
|
|
|
339 |
}
|
|
|
340 |
$this->barcode_array['num_rows'] = $params[0];
|
|
|
341 |
$this->barcode_array['num_cols'] = $params[1];
|
|
|
342 |
$this->barcode_array['bcode'] = $grid;
|
|
|
343 |
}
|
|
|
344 |
|
|
|
345 |
/**
|
|
|
346 |
* Returns a barcode array which is readable by TCPDF
|
|
|
347 |
* @return array barcode array readable by TCPDF;
|
|
|
348 |
* @public
|
|
|
349 |
*/
|
|
|
350 |
public function getBarcodeArray() {
|
|
|
351 |
return $this->barcode_array;
|
|
|
352 |
}
|
|
|
353 |
|
|
|
354 |
/**
|
|
|
355 |
* Product of two numbers in a Power-of-Two Galois Field
|
|
|
356 |
* @param $a (int) first number to multiply.
|
|
|
357 |
* @param $b (int) second number to multiply.
|
|
|
358 |
* @param $log (array) Log table.
|
|
|
359 |
* @param $alog (array) Anti-Log table.
|
|
|
360 |
* @param $gf (array) Number of Factors of the Reed-Solomon polynomial.
|
|
|
361 |
* @return int product
|
|
|
362 |
* @protected
|
|
|
363 |
*/
|
|
|
364 |
protected function getGFProduct($a, $b, $log, $alog, $gf) {
|
|
|
365 |
if (($a == 0) OR ($b == 0)) {
|
|
|
366 |
return 0;
|
|
|
367 |
}
|
|
|
368 |
return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]);
|
|
|
369 |
}
|
|
|
370 |
|
|
|
371 |
/**
|
|
|
372 |
* Add error correction codewords to data codewords array (ANNEX E).
|
|
|
373 |
* @param $wd (array) Array of datacodewords.
|
|
|
374 |
* @param $nb (int) Number of blocks.
|
|
|
375 |
* @param $nd (int) Number of data codewords per block.
|
|
|
376 |
* @param $nc (int) Number of correction codewords per block.
|
|
|
377 |
* @param $gf (int) numner of fields on log/antilog table (power of 2).
|
|
|
378 |
* @param $pp (int) The value of its prime modulus polynomial (301 for ECC200).
|
|
|
379 |
* @return array data codewords + error codewords
|
|
|
380 |
* @protected
|
|
|
381 |
*/
|
|
|
382 |
protected function getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301) {
|
|
|
383 |
// generate the log ($log) and antilog ($alog) tables
|
|
|
384 |
$log[0] = 0;
|
|
|
385 |
$alog[0] = 1;
|
|
|
386 |
for ($i = 1; $i < $gf; ++$i) {
|
|
|
387 |
$alog[$i] = ($alog[($i - 1)] * 2);
|
|
|
388 |
if ($alog[$i] >= $gf) {
|
|
|
389 |
$alog[$i] ^= $pp;
|
|
|
390 |
}
|
|
|
391 |
$log[$alog[$i]] = $i;
|
|
|
392 |
}
|
|
|
393 |
ksort($log);
|
|
|
394 |
// generate the polynomial coefficients (c)
|
|
|
395 |
$c = array_fill(0, ($nc + 1), 0);
|
|
|
396 |
$c[0] = 1;
|
|
|
397 |
for ($i = 1; $i <= $nc; ++$i) {
|
|
|
398 |
$c[$i] = $c[($i-1)];
|
|
|
399 |
for ($j = ($i - 1); $j >= 1; --$j) {
|
|
|
400 |
$c[$j] = $c[($j - 1)] ^ $this->getGFProduct($c[$j], $alog[$i], $log, $alog, $gf);
|
|
|
401 |
}
|
|
|
402 |
$c[0] = $this->getGFProduct($c[0], $alog[$i], $log, $alog, $gf);
|
|
|
403 |
}
|
|
|
404 |
ksort($c);
|
|
|
405 |
// total number of data codewords
|
|
|
406 |
$num_wd = ($nb * $nd);
|
|
|
407 |
// total number of error codewords
|
|
|
408 |
$num_we = ($nb * $nc);
|
|
|
409 |
// for each block
|
|
|
410 |
for ($b = 0; $b < $nb; ++$b) {
|
|
|
411 |
// create interleaved data block
|
|
|
412 |
$block = array();
|
|
|
413 |
for ($n = $b; $n < $num_wd; $n += $nb) {
|
|
|
414 |
$block[] = $wd[$n];
|
|
|
415 |
}
|
|
|
416 |
// initialize error codewords
|
|
|
417 |
$we = array_fill(0, ($nc + 1), 0);
|
|
|
418 |
// calculate error correction codewords for this block
|
|
|
419 |
for ($i = 0; $i < $nd; ++$i) {
|
|
|
420 |
$k = ($we[0] ^ $block[$i]);
|
|
|
421 |
for ($j = 0; $j < $nc; ++$j) {
|
|
|
422 |
$we[$j] = ($we[($j + 1)] ^ $this->getGFProduct($k, $c[($nc - $j - 1)], $log, $alog, $gf));
|
|
|
423 |
}
|
|
|
424 |
}
|
|
|
425 |
// add error codewords at the end of data codewords
|
|
|
426 |
$j = 0;
|
|
|
427 |
for ($i = $b; $i < $num_we; $i += $nb) {
|
|
|
428 |
$wd[($num_wd + $i)] = $we[$j];
|
|
|
429 |
++$j;
|
|
|
430 |
}
|
|
|
431 |
}
|
|
|
432 |
// reorder codewords
|
|
|
433 |
ksort($wd);
|
|
|
434 |
return $wd;
|
|
|
435 |
}
|
|
|
436 |
|
|
|
437 |
/**
|
|
|
438 |
* Return the 253-state codeword
|
|
|
439 |
* @param $cwpad (int) Pad codeword.
|
|
|
440 |
* @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
|
|
441 |
* @return pad codeword
|
|
|
442 |
* @protected
|
|
|
443 |
*/
|
|
|
444 |
protected function get253StateCodeword($cwpad, $cwpos) {
|
|
|
445 |
$pad = ($cwpad + (((149 * $cwpos) % 253) + 1));
|
|
|
446 |
if ($pad > 254) {
|
|
|
447 |
$pad -= 254;
|
|
|
448 |
}
|
|
|
449 |
return $pad;
|
|
|
450 |
}
|
|
|
451 |
|
|
|
452 |
/**
|
|
|
453 |
* Return the 255-state codeword
|
|
|
454 |
* @param $cwpad (int) Pad codeword.
|
|
|
455 |
* @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
|
|
456 |
* @return pad codeword
|
|
|
457 |
* @protected
|
|
|
458 |
*/
|
|
|
459 |
protected function get255StateCodeword($cwpad, $cwpos) {
|
|
|
460 |
$pad = ($cwpad + (((149 * $cwpos) % 255) + 1));
|
|
|
461 |
if ($pad > 255) {
|
|
|
462 |
$pad -= 256;
|
|
|
463 |
}
|
|
|
464 |
return $pad;
|
|
|
465 |
}
|
|
|
466 |
|
|
|
467 |
/**
|
|
|
468 |
* Returns true if the char belongs to the selected mode
|
|
|
469 |
* @param $chr (int) Character (byte) to check.
|
|
|
470 |
* @param $mode (int) Current encoding mode.
|
|
|
471 |
* @return boolean true if the char is of the selected mode.
|
|
|
472 |
* @protected
|
|
|
473 |
*/
|
|
|
474 |
protected function isCharMode($chr, $mode) {
|
|
|
475 |
$status = false;
|
|
|
476 |
switch ($mode) {
|
|
|
477 |
case ENC_ASCII: { // ASCII character 0 to 127
|
|
|
478 |
$status = (($chr >= 0) AND ($chr <= 127));
|
|
|
479 |
break;
|
|
|
480 |
}
|
|
|
481 |
case ENC_C40: { // Upper-case alphanumeric
|
|
|
482 |
$status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 65) AND ($chr <= 90)));
|
|
|
483 |
break;
|
|
|
484 |
}
|
|
|
485 |
case ENC_TXT: { // Lower-case alphanumeric
|
|
|
486 |
$status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 97) AND ($chr <= 122)));
|
|
|
487 |
break;
|
|
|
488 |
}
|
|
|
489 |
case ENC_X12: { // ANSI X12
|
|
|
490 |
$status = (($chr == 13) OR ($chr == 42) OR ($chr == 62));
|
|
|
491 |
break;
|
|
|
492 |
}
|
|
|
493 |
case ENC_EDF: { // ASCII character 32 to 94
|
|
|
494 |
$status = (($chr >= 32) AND ($chr <= 94));
|
|
|
495 |
break;
|
|
|
496 |
}
|
|
|
497 |
case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page)
|
|
|
498 |
$status = (($chr == 232) OR ($chr == 233) OR ($chr == 234) OR ($chr == 241));
|
|
|
499 |
break;
|
|
|
500 |
}
|
|
|
501 |
case ENC_ASCII_EXT: { // ASCII character 128 to 255
|
|
|
502 |
$status = (($chr >= 128) AND ($chr <= 255));
|
|
|
503 |
break;
|
|
|
504 |
}
|
|
|
505 |
case ENC_ASCII_NUM: { // ASCII digits
|
|
|
506 |
$status = (($chr >= 48) AND ($chr <= 57));
|
|
|
507 |
break;
|
|
|
508 |
}
|
|
|
509 |
}
|
|
|
510 |
return $status;
|
|
|
511 |
}
|
|
|
512 |
|
|
|
513 |
/**
|
|
|
514 |
* The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S).
|
|
|
515 |
* @param $data (string) data to encode
|
|
|
516 |
* @param $pos (int) current position
|
|
|
517 |
* @param $mode (int) current encoding mode
|
|
|
518 |
* @return int encoding mode
|
|
|
519 |
* @protected
|
|
|
520 |
*/
|
|
|
521 |
protected function lookAheadTest($data, $pos, $mode) {
|
|
|
522 |
$data_length = strlen($data);
|
|
|
523 |
if ($pos >= $data_length) {
|
|
|
524 |
return $mode;
|
|
|
525 |
}
|
|
|
526 |
$charscount = 0; // count processed chars
|
|
|
527 |
// STEP J
|
|
|
528 |
if ($mode == ENC_ASCII) {
|
|
|
529 |
$numch = array(0, 1, 1, 1, 1, 1.25);
|
|
|
530 |
} else {
|
|
|
531 |
$numch = array(1, 2, 2, 2, 2, 2.25);
|
|
|
532 |
$numch[$mode] = 0;
|
|
|
533 |
}
|
|
|
534 |
while (true) {
|
|
|
535 |
// STEP K
|
|
|
536 |
if (($pos + $charscount) == $data_length) {
|
|
|
537 |
if ($numch[ENC_ASCII] <= ceil(min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
|
|
538 |
return ENC_ASCII;
|
|
|
539 |
}
|
|
|
540 |
if ($numch[ENC_BASE256] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) {
|
|
|
541 |
return ENC_BASE256;
|
|
|
542 |
}
|
|
|
543 |
if ($numch[ENC_EDF] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256]))) {
|
|
|
544 |
return ENC_EDF;
|
|
|
545 |
}
|
|
|
546 |
if ($numch[ENC_TXT] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
|
|
547 |
return ENC_TXT;
|
|
|
548 |
}
|
|
|
549 |
if ($numch[ENC_X12] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
|
|
550 |
return ENC_X12;
|
|
|
551 |
}
|
|
|
552 |
return ENC_C40;
|
|
|
553 |
}
|
|
|
554 |
// get char
|
|
|
555 |
$chr = ord($data[$pos + $charscount]);
|
|
|
556 |
$charscount++;
|
|
|
557 |
// STEP L
|
|
|
558 |
if ($this->isCharMode($chr, ENC_ASCII_NUM)) {
|
|
|
559 |
$numch[ENC_ASCII] += (1 / 2);
|
|
|
560 |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
561 |
$numch[ENC_ASCII] = ceil($numch[ENC_ASCII]);
|
|
|
562 |
$numch[ENC_ASCII] += 2;
|
|
|
563 |
} else {
|
|
|
564 |
$numch[ENC_ASCII] = ceil($numch[ENC_ASCII]);
|
|
|
565 |
$numch[ENC_ASCII] += 1;
|
|
|
566 |
}
|
|
|
567 |
// STEP M
|
|
|
568 |
if ($this->isCharMode($chr, ENC_C40)) {
|
|
|
569 |
$numch[ENC_C40] += (2 / 3);
|
|
|
570 |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
571 |
$numch[ENC_C40] += (8 / 3);
|
|
|
572 |
} else {
|
|
|
573 |
$numch[ENC_C40] += (4 / 3);
|
|
|
574 |
}
|
|
|
575 |
// STEP N
|
|
|
576 |
if ($this->isCharMode($chr, ENC_TXT)) {
|
|
|
577 |
$numch[ENC_TXT] += (2 / 3);
|
|
|
578 |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
579 |
$numch[ENC_TXT] += (8 / 3);
|
|
|
580 |
} else {
|
|
|
581 |
$numch[ENC_TXT] += (4 / 3);
|
|
|
582 |
}
|
|
|
583 |
// STEP O
|
|
|
584 |
if ($this->isCharMode($chr, ENC_X12) OR $this->isCharMode($chr, ENC_C40)) {
|
|
|
585 |
$numch[ENC_X12] += (2 / 3);
|
|
|
586 |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
587 |
$numch[ENC_X12] += (13 / 3);
|
|
|
588 |
} else {
|
|
|
589 |
$numch[ENC_X12] += (10 / 3);
|
|
|
590 |
}
|
|
|
591 |
// STEP P
|
|
|
592 |
if ($this->isCharMode($chr, ENC_EDF)) {
|
|
|
593 |
$numch[ENC_EDF] += (3 / 4);
|
|
|
594 |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
595 |
$numch[ENC_EDF] += (17 / 4);
|
|
|
596 |
} else {
|
|
|
597 |
$numch[ENC_EDF] += (13 / 4);
|
|
|
598 |
}
|
|
|
599 |
// STEP Q
|
|
|
600 |
if ($this->isCharMode($chr, ENC_BASE256)) {
|
|
|
601 |
$numch[ENC_BASE256] += 4;
|
|
|
602 |
} else {
|
|
|
603 |
$numch[ENC_BASE256] += 1;
|
|
|
604 |
}
|
|
|
605 |
// STEP R
|
|
|
606 |
if ($charscount >= 4) {
|
|
|
607 |
if (($numch[ENC_ASCII] + 1) <= min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
|
|
608 |
return ENC_ASCII;
|
|
|
609 |
}
|
|
|
610 |
if ((($numch[ENC_BASE256] + 1) <= $numch[ENC_ASCII])
|
|
|
611 |
OR (($numch[ENC_BASE256] + 1) < min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) {
|
|
|
612 |
return ENC_BASE256;
|
|
|
613 |
}
|
|
|
614 |
if (($numch[ENC_EDF] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256])) {
|
|
|
615 |
return ENC_EDF;
|
|
|
616 |
}
|
|
|
617 |
if (($numch[ENC_TXT] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
|
|
618 |
return ENC_TXT;
|
|
|
619 |
}
|
|
|
620 |
if (($numch[ENC_X12] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
|
|
621 |
return ENC_X12;
|
|
|
622 |
}
|
|
|
623 |
if (($numch[ENC_C40] + 1) < min($numch[ENC_ASCII], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
|
|
624 |
if ($numch[ENC_C40] < $numch[ENC_X12]) {
|
|
|
625 |
return ENC_C40;
|
|
|
626 |
}
|
|
|
627 |
if ($numch[ENC_C40] == $numch[ENC_X12]) {
|
|
|
628 |
$k = ($pos + $charscount + 1);
|
|
|
629 |
while ($k < $data_length) {
|
|
|
630 |
$tmpchr = ord($data{$k});
|
|
|
631 |
if ($this->isCharMode($tmpchr, ENC_X12)) {
|
|
|
632 |
return ENC_X12;
|
|
|
633 |
} elseif (!($this->isCharMode($tmpchr, ENC_X12) OR $this->isCharMode($tmpchr, ENC_C40))) {
|
|
|
634 |
break;
|
|
|
635 |
}
|
|
|
636 |
++$k;
|
|
|
637 |
}
|
|
|
638 |
return ENC_C40;
|
|
|
639 |
}
|
|
|
640 |
}
|
|
|
641 |
}
|
|
|
642 |
} // end of while
|
|
|
643 |
}
|
|
|
644 |
|
|
|
645 |
/**
|
|
|
646 |
* Get the switching codeword to a new encoding mode (latch codeword)
|
|
|
647 |
* @param $mode (int) New encoding mode.
|
|
|
648 |
* @return (int) Switch codeword.
|
|
|
649 |
* @protected
|
|
|
650 |
*/
|
|
|
651 |
protected function getSwitchEncodingCodeword($mode) {
|
|
|
652 |
switch ($mode) {
|
|
|
653 |
case ENC_ASCII: { // ASCII character 0 to 127
|
|
|
654 |
$cw = 254;
|
|
|
655 |
break;
|
|
|
656 |
}
|
|
|
657 |
case ENC_C40: { // Upper-case alphanumeric
|
|
|
658 |
$cw = 230;
|
|
|
659 |
break;
|
|
|
660 |
}
|
|
|
661 |
case ENC_TXT: { // Lower-case alphanumeric
|
|
|
662 |
$cw = 239;
|
|
|
663 |
break;
|
|
|
664 |
}
|
|
|
665 |
case ENC_X12: { // ANSI X12
|
|
|
666 |
$cw = 238;
|
|
|
667 |
break;
|
|
|
668 |
}
|
|
|
669 |
case ENC_EDF: { // ASCII character 32 to 94
|
|
|
670 |
$cw = 240;
|
|
|
671 |
break;
|
|
|
672 |
}
|
|
|
673 |
case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page)
|
|
|
674 |
$cw = 231;
|
|
|
675 |
break;
|
|
|
676 |
}
|
|
|
677 |
}
|
|
|
678 |
return $cw;
|
|
|
679 |
}
|
|
|
680 |
|
|
|
681 |
/**
|
|
|
682 |
* Choose the minimum matrix size and return the max number of data codewords.
|
|
|
683 |
* @param $numcw (int) Number of current codewords.
|
|
|
684 |
* @return number of data codewords in matrix
|
|
|
685 |
* @protected
|
|
|
686 |
*/
|
|
|
687 |
protected function getMaxDataCodewords($numcw) {
|
|
|
688 |
foreach ($this->symbattr as $key => $matrix) {
|
|
|
689 |
if ($matrix[11] >= $numcw) {
|
|
|
690 |
return $matrix[11];
|
|
|
691 |
}
|
|
|
692 |
}
|
|
|
693 |
return 0;
|
|
|
694 |
}
|
|
|
695 |
|
|
|
696 |
/**
|
|
|
697 |
* Get high level encoding using the minimum symbol data characters for ECC 200
|
|
|
698 |
* @param $data (string) data to encode
|
|
|
699 |
* @return array of codewords
|
|
|
700 |
* @protected
|
|
|
701 |
*/
|
|
|
702 |
protected function getHighLevelEncoding($data) {
|
|
|
703 |
// STEP A. Start in ASCII encodation.
|
|
|
704 |
$enc = ENC_ASCII; // current encoding mode
|
|
|
705 |
$pos = 0; // current position
|
|
|
706 |
$cw = array(); // array of codewords to be returned
|
|
|
707 |
$cw_num = 0; // number of data codewords
|
|
|
708 |
$data_lenght = strlen($data); // number of chars
|
|
|
709 |
while ($pos < $data_lenght) {
|
|
|
710 |
switch ($enc) {
|
|
|
711 |
case ENC_ASCII: { // STEP B. While in ASCII encodation
|
|
|
712 |
if (($data_lenght > 1) AND ($pos < ($data_lenght - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) {
|
|
|
713 |
// 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode.
|
|
|
714 |
$cw[] = (intval(substr($data, $pos, 2)) + 130);
|
|
|
715 |
++$cw_num;
|
|
|
716 |
$pos += 2;
|
|
|
717 |
} else {
|
|
|
718 |
// 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
|
|
719 |
$newenc = $this->lookAheadTest($data, $pos, $enc);
|
|
|
720 |
if ($newenc != $enc) {
|
|
|
721 |
// switch to new encoding
|
|
|
722 |
$enc = $newenc;
|
|
|
723 |
$cw[] = $this->getSwitchEncodingCodeword($enc);
|
|
|
724 |
++$cw_num;
|
|
|
725 |
} else {
|
|
|
726 |
// get new byte
|
|
|
727 |
$chr = ord($data[$pos]);
|
|
|
728 |
++$pos;
|
|
|
729 |
if ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
|
|
730 |
// 3. If the next data character is extended ASCII (greater than 127) encode it in ASCII mode first using the Upper Shift (value 235) character.
|
|
|
731 |
$cw[] = 235;
|
|
|
732 |
$cw[] = ($chr - 127);
|
|
|
733 |
$cw_num += 2;
|
|
|
734 |
} else {
|
|
|
735 |
// 4. Otherwise process the next data character in ASCII encodation.
|
|
|
736 |
$cw[] = ($chr + 1);
|
|
|
737 |
++$cw_num;
|
|
|
738 |
}
|
|
|
739 |
}
|
|
|
740 |
}
|
|
|
741 |
break;
|
|
|
742 |
}
|
|
|
743 |
case ENC_C40 : // Upper-case alphanumeric
|
|
|
744 |
case ENC_TXT : // Lower-case alphanumeric
|
|
|
745 |
case ENC_X12 : { // ANSI X12
|
|
|
746 |
$temp_cw = array();
|
|
|
747 |
$p = 0;
|
|
|
748 |
$epos = $pos;
|
|
|
749 |
// get charset ID
|
|
|
750 |
$set_id = $this->chset_id[$enc];
|
|
|
751 |
// get basic charset for current encoding
|
|
|
752 |
$charset = $this->chset[$set_id];
|
|
|
753 |
do {
|
|
|
754 |
// 2. process the next character in C40 encodation.
|
|
|
755 |
$chr = ord($data[$epos]);
|
|
|
756 |
++$epos;
|
|
|
757 |
// check for extended character
|
|
|
758 |
if ($chr & 0x80) {
|
|
|
759 |
if ($enc == ENC_X12) {
|
|
|
760 |
return false;
|
|
|
761 |
}
|
|
|
762 |
$chr = ($chr & 0x7f);
|
|
|
763 |
$temp_cw[] = 1; // shift 2
|
|
|
764 |
$temp_cw[] = 30; // upper shift
|
|
|
765 |
$p += 2;
|
|
|
766 |
}
|
|
|
767 |
if (isset($charset[$chr])) {
|
|
|
768 |
$temp_cw[] = $charset[$chr];
|
|
|
769 |
++$p;
|
|
|
770 |
} else {
|
|
|
771 |
if (isset($this->chset['SH1'][$chr])) {
|
|
|
772 |
$temp_cw[] = 0; // shift 1
|
|
|
773 |
$shiftset = $this->chset['SH1'];
|
|
|
774 |
} elseif (isset($chr, $this->chset['SH2'][$chr])) {
|
|
|
775 |
$temp_cw[] = 1; // shift 2
|
|
|
776 |
$shiftset = $this->chset['SH2'];
|
|
|
777 |
} elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) {
|
|
|
778 |
$temp_cw[] = 2; // shift 3
|
|
|
779 |
$shiftset = $this->chset['S3C'];
|
|
|
780 |
} elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) {
|
|
|
781 |
$temp_cw[] = 2; // shift 3
|
|
|
782 |
$shiftset = $this->chset['S3T'];
|
|
|
783 |
} else {
|
|
|
784 |
return false;
|
|
|
785 |
}
|
|
|
786 |
$temp_cw[] = $shiftset[$chr];
|
|
|
787 |
$p += 2;
|
|
|
788 |
}
|
|
|
789 |
if ($p >= 3) {
|
|
|
790 |
$c1 = array_shift($temp_cw);
|
|
|
791 |
$c2 = array_shift($temp_cw);
|
|
|
792 |
$c3 = array_shift($temp_cw);
|
|
|
793 |
$p -= 3;
|
|
|
794 |
$tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1);
|
|
|
795 |
$cw[] = ($tmp >> 8);
|
|
|
796 |
$cw[] = ($tmp % 256);
|
|
|
797 |
$cw_num += 2;
|
|
|
798 |
$pos = $epos;
|
|
|
799 |
// 1. If the C40 encoding is at the point of starting a new double symbol character and if the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
|
|
800 |
$newenc = $this->lookAheadTest($data, $pos, $enc);
|
|
|
801 |
if ($newenc != $enc) {
|
|
|
802 |
$enc = $newenc;
|
|
|
803 |
$cw[] = $this->getSwitchEncodingCodeword($enc);
|
|
|
804 |
++$cw_num;
|
|
|
805 |
$pos -= $p;
|
|
|
806 |
$p = 0;
|
|
|
807 |
break;
|
|
|
808 |
}
|
|
|
809 |
}
|
|
|
810 |
} while (($p > 0) AND ($epos < $data_lenght));
|
|
|
811 |
// process last data (if any)
|
|
|
812 |
if ($p > 0) {
|
|
|
813 |
// get remaining number of data symbols
|
|
|
814 |
$cwr = ($this->getMaxDataCodewords($cw_num + 2) - $cw_num);
|
|
|
815 |
if (($cwr == 1) AND ($p == 1)) {
|
|
|
816 |
// d. If one symbol character remains and one C40 value (data character) remains to be encoded
|
|
|
817 |
$c1 = array_shift($temp_cw);
|
|
|
818 |
--$p;
|
|
|
819 |
$cw[] = ($c1 + 1);
|
|
|
820 |
++$cw_num;
|
|
|
821 |
} elseif (($cwr == 2) AND ($p == 1)) {
|
|
|
822 |
// c. If two symbol characters remain and only one C40 value (data character) remains to be encoded
|
|
|
823 |
$c1 = array_shift($temp_cw);
|
|
|
824 |
--$p;
|
|
|
825 |
$cw[] = 254;
|
|
|
826 |
$cw[] = ($c1 + 1);
|
|
|
827 |
$cw_num += 2;
|
|
|
828 |
} elseif (($cwr == 2) AND ($p == 2)) {
|
|
|
829 |
// b. If two symbol characters remain and two C40 values remain to be encoded
|
|
|
830 |
$c1 = array_shift($temp_cw);
|
|
|
831 |
$c2 = array_shift($temp_cw);
|
|
|
832 |
$p -= 2;
|
|
|
833 |
$tmp = ((1600 * $c1) + (40 * $c2) + 1);
|
|
|
834 |
$cw[] = ($tmp >> 8);
|
|
|
835 |
$cw[] = ($tmp % 256);
|
|
|
836 |
$cw_num += 2;
|
|
|
837 |
} else {
|
|
|
838 |
// switch to ASCII encoding
|
|
|
839 |
if ($enc != ENC_ASCII) {
|
|
|
840 |
$enc = ENC_ASCII;
|
|
|
841 |
$cw[] = $this->getSwitchEncodingCodeword($enc);
|
|
|
842 |
++$cw_num;
|
|
|
843 |
}
|
|
|
844 |
}
|
|
|
845 |
}
|
|
|
846 |
break;
|
|
|
847 |
}
|
|
|
848 |
case ENC_EDF: { // F. While in EDIFACT (EDF) encodation
|
|
|
849 |
// initialize temporary array with 0 lenght
|
|
|
850 |
$temp_cw = array();
|
|
|
851 |
$epos = $pos;
|
|
|
852 |
$field_lenght = 0;
|
|
|
853 |
$newenc = $enc;
|
|
|
854 |
do {
|
|
|
855 |
// 2. process the next character in EDIFACT encodation.
|
|
|
856 |
$chr = ord($data[$epos]);
|
|
|
857 |
if ($this->isCharMode($chr, ENC_EDF)) {
|
|
|
858 |
++$epos;
|
|
|
859 |
$temp_cw[] = $chr;
|
|
|
860 |
++$field_lenght;
|
|
|
861 |
}
|
|
|
862 |
if (($field_lenght == 4) OR ($epos == $data_lenght) OR !$this->isCharMode($chr, ENC_EDF)) {
|
|
|
863 |
if ($field_lenght < 4) {
|
|
|
864 |
// set unlatch character
|
|
|
865 |
$temp_cw[] = 0x1f;
|
|
|
866 |
++$field_lenght;
|
|
|
867 |
// fill empty characters
|
|
|
868 |
for ($i = $field_lenght; $i < 4; ++$i) {
|
|
|
869 |
$temp_cw[] = 0;
|
|
|
870 |
}
|
|
|
871 |
$enc = ENC_ASCII;
|
|
|
872 |
}
|
|
|
873 |
// encodes four data characters in three codewords
|
|
|
874 |
$tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4);
|
|
|
875 |
if ($tcw > 0) {
|
|
|
876 |
$cw[] = $tcw;
|
|
|
877 |
$cw_num++;
|
|
|
878 |
}
|
|
|
879 |
$tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2);
|
|
|
880 |
if ($tcw > 0) {
|
|
|
881 |
$cw[] = $tcw;
|
|
|
882 |
$cw_num++;
|
|
|
883 |
}
|
|
|
884 |
$tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F);
|
|
|
885 |
if ($tcw > 0) {
|
|
|
886 |
$cw[] = $tcw;
|
|
|
887 |
$cw_num++;
|
|
|
888 |
}
|
|
|
889 |
$temp_cw = array();
|
|
|
890 |
$pos = $epos;
|
|
|
891 |
$field_lenght = 0;
|
|
|
892 |
if ($enc == ENC_ASCII) {
|
|
|
893 |
break; // exit from EDIFACT mode
|
|
|
894 |
}
|
|
|
895 |
}
|
|
|
896 |
} while ($epos < $data_lenght);
|
|
|
897 |
break;
|
|
|
898 |
}
|
|
|
899 |
case ENC_BASE256: { // G. While in Base 256 (B256) encodation
|
|
|
900 |
// initialize temporary array with 0 lenght
|
|
|
901 |
$temp_cw = array();
|
|
|
902 |
$field_lenght = 0;
|
|
|
903 |
while (($pos < $data_lenght) AND ($field_lenght <= 1555)) {
|
|
|
904 |
$newenc = $this->lookAheadTest($data, $pos, $enc);
|
|
|
905 |
if ($newenc != $enc) {
|
|
|
906 |
// 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
|
|
907 |
$enc = $newenc;
|
|
|
908 |
$cw[] = $this->getSwitchEncodingCodeword($enc);
|
|
|
909 |
++$cw_num;
|
|
|
910 |
break; // exit from B256 mode
|
|
|
911 |
} else {
|
|
|
912 |
// 2. Otherwise, process the next character in Base 256 encodation.
|
|
|
913 |
$chr = ord($data[$pos]);
|
|
|
914 |
++$pos;
|
|
|
915 |
$temp_cw[] = $chr;
|
|
|
916 |
++$field_lenght;
|
|
|
917 |
}
|
|
|
918 |
}
|
|
|
919 |
// set field lenght
|
|
|
920 |
if ($field_lenght <= 249) {
|
|
|
921 |
$cw[] = $field_lenght;
|
|
|
922 |
++$cw_num;
|
|
|
923 |
} else {
|
|
|
924 |
$cw[] = (floor($field_lenght / 250) + 249);
|
|
|
925 |
$cw[] = ($field_lenght % 250);
|
|
|
926 |
$cw_num += 2;
|
|
|
927 |
}
|
|
|
928 |
if (!empty($temp_cw)) {
|
|
|
929 |
// add B256 field
|
|
|
930 |
foreach ($temp_cw as $p => $cht) {
|
|
|
931 |
$cw[] = $this->get255StateCodeword($chr, ($cw_num + $p));
|
|
|
932 |
}
|
|
|
933 |
}
|
|
|
934 |
break;
|
|
|
935 |
}
|
|
|
936 |
} // end of switch enc
|
|
|
937 |
} // end of while
|
|
|
938 |
// set last used encoding
|
|
|
939 |
$this->last_enc = $enc;
|
|
|
940 |
return $cw;
|
|
|
941 |
}
|
|
|
942 |
|
|
|
943 |
/**
|
|
|
944 |
* Places "chr+bit" with appropriate wrapping within array[].
|
|
|
945 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
946 |
* @param $marr (array) Array of symbols.
|
|
|
947 |
* @param $nrow (int) Number of rows.
|
|
|
948 |
* @param $ncol (int) Number of columns.
|
|
|
949 |
* @param $row (int) Row number.
|
|
|
950 |
* @param $col (int) Column number.
|
|
|
951 |
* @param $chr (int) Char byte.
|
|
|
952 |
* @param $bit (int) Bit.
|
|
|
953 |
* @return array
|
|
|
954 |
* @protected
|
|
|
955 |
*/
|
|
|
956 |
protected function placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit) {
|
|
|
957 |
if ($row < 0) {
|
|
|
958 |
$row += $nrow;
|
|
|
959 |
$col += (4 - (($nrow + 4) % 8));
|
|
|
960 |
}
|
|
|
961 |
if ($col < 0) {
|
|
|
962 |
$col += $ncol;
|
|
|
963 |
$row += (4 - (($ncol + 4) % 8));
|
|
|
964 |
}
|
|
|
965 |
$marr[(($row * $ncol) + $col)] = ((10 * $chr) + $bit);
|
|
|
966 |
return $marr;
|
|
|
967 |
}
|
|
|
968 |
|
|
|
969 |
/**
|
|
|
970 |
* Places the 8 bits of a utah-shaped symbol character.
|
|
|
971 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
972 |
* @param $marr (array) Array of symbols.
|
|
|
973 |
* @param $nrow (int) Number of rows.
|
|
|
974 |
* @param $ncol (int) Number of columns.
|
|
|
975 |
* @param $row (int) Row number.
|
|
|
976 |
* @param $col (int) Column number.
|
|
|
977 |
* @param $chr (int) Char byte.
|
|
|
978 |
* @return array
|
|
|
979 |
* @protected
|
|
|
980 |
*/
|
|
|
981 |
protected function placeUtah($marr, $nrow, $ncol, $row, $col, $chr) {
|
|
|
982 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-2, $chr, 1);
|
|
|
983 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-1, $chr, 2);
|
|
|
984 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-2, $chr, 3);
|
|
|
985 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-1, $chr, 4);
|
|
|
986 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col, $chr, 5);
|
|
|
987 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-2, $chr, 6);
|
|
|
988 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-1, $chr, 7);
|
|
|
989 |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col, $chr, 8);
|
|
|
990 |
return $marr;
|
|
|
991 |
}
|
|
|
992 |
|
|
|
993 |
/**
|
|
|
994 |
* Places the 8 bits of the first special corner case.
|
|
|
995 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
996 |
* @param $marr (array) Array of symbols.
|
|
|
997 |
* @param $nrow (int) Number of rows.
|
|
|
998 |
* @param $ncol (int) Number of columns.
|
|
|
999 |
* @param $chr (int) Char byte.
|
|
|
1000 |
* @return array
|
|
|
1001 |
* @protected
|
|
|
1002 |
*/
|
|
|
1003 |
protected function placeCornerA($marr, $nrow, $ncol, $chr) {
|
|
|
1004 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1);
|
|
|
1005 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 1, $chr, 2);
|
|
|
1006 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 2, $chr, 3);
|
|
|
1007 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
|
|
1008 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
|
|
1009 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6);
|
|
|
1010 |
$marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7);
|
|
|
1011 |
$marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8);
|
|
|
1012 |
return $marr;
|
|
|
1013 |
}
|
|
|
1014 |
|
|
|
1015 |
/**
|
|
|
1016 |
* Places the 8 bits of the second special corner case.
|
|
|
1017 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
1018 |
* @param $marr (array) Array of symbols.
|
|
|
1019 |
* @param $nrow (int) Number of rows.
|
|
|
1020 |
* @param $ncol (int) Number of columns.
|
|
|
1021 |
* @param $chr (int) Char byte.
|
|
|
1022 |
* @return array
|
|
|
1023 |
* @protected
|
|
|
1024 |
*/
|
|
|
1025 |
protected function placeCornerB($marr, $nrow, $ncol, $chr) {
|
|
|
1026 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1);
|
|
|
1027 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2);
|
|
|
1028 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3);
|
|
|
1029 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-4, $chr, 4);
|
|
|
1030 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 5);
|
|
|
1031 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 6);
|
|
|
1032 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 7);
|
|
|
1033 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8);
|
|
|
1034 |
return $marr;
|
|
|
1035 |
}
|
|
|
1036 |
|
|
|
1037 |
/**
|
|
|
1038 |
* Places the 8 bits of the third special corner case.
|
|
|
1039 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
1040 |
* @param $marr (array) Array of symbols.
|
|
|
1041 |
* @param $nrow (int) Number of rows.
|
|
|
1042 |
* @param $ncol (int) Number of columns.
|
|
|
1043 |
* @param $chr (int) Char byte.
|
|
|
1044 |
* @return array
|
|
|
1045 |
* @protected
|
|
|
1046 |
*/
|
|
|
1047 |
protected function placeCornerC($marr, $nrow, $ncol, $chr) {
|
|
|
1048 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1);
|
|
|
1049 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2);
|
|
|
1050 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3);
|
|
|
1051 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
|
|
1052 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
|
|
1053 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6);
|
|
|
1054 |
$marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7);
|
|
|
1055 |
$marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8);
|
|
|
1056 |
return $marr;
|
|
|
1057 |
}
|
|
|
1058 |
|
|
|
1059 |
/**
|
|
|
1060 |
* Places the 8 bits of the fourth special corner case.
|
|
|
1061 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
1062 |
* @param $marr (array) Array of symbols.
|
|
|
1063 |
* @param $nrow (int) Number of rows.
|
|
|
1064 |
* @param $ncol (int) Number of columns.
|
|
|
1065 |
* @param $chr (int) Char byte.
|
|
|
1066 |
* @return array
|
|
|
1067 |
* @protected
|
|
|
1068 |
*/
|
|
|
1069 |
protected function placeCornerD($marr, $nrow, $ncol, $chr) {
|
|
|
1070 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1);
|
|
|
1071 |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, $ncol-1, $chr, 2);
|
|
|
1072 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 3);
|
|
|
1073 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
|
|
1074 |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
|
|
1075 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-3, $chr, 6);
|
|
|
1076 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-2, $chr, 7);
|
|
|
1077 |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8);
|
|
|
1078 |
return $marr;
|
|
|
1079 |
}
|
|
|
1080 |
|
|
|
1081 |
/**
|
|
|
1082 |
* Build a placement map.
|
|
|
1083 |
* (Annex F - ECC 200 symbol character placement)
|
|
|
1084 |
* @param $nrow (int) Number of rows.
|
|
|
1085 |
* @param $ncol (int) Number of columns.
|
|
|
1086 |
* @return array
|
|
|
1087 |
* @protected
|
|
|
1088 |
*/
|
|
|
1089 |
protected function getPlacementMap($nrow, $ncol) {
|
|
|
1090 |
// initialize array with zeros
|
|
|
1091 |
$marr = array_fill(0, ($nrow * $ncol), 0);
|
|
|
1092 |
// set starting values
|
|
|
1093 |
$chr = 1;
|
|
|
1094 |
$row = 4;
|
|
|
1095 |
$col = 0;
|
|
|
1096 |
do {
|
|
|
1097 |
// repeatedly first check for one of the special corner cases, then
|
|
|
1098 |
if (($row == $nrow) AND ($col == 0)) {
|
|
|
1099 |
$marr = $this->placeCornerA($marr, $nrow, $ncol, $chr);
|
|
|
1100 |
++$chr;
|
|
|
1101 |
}
|
|
|
1102 |
if (($row == ($nrow - 2)) AND ($col == 0) AND ($ncol % 4)) {
|
|
|
1103 |
$marr = $this->placeCornerB($marr, $nrow, $ncol, $chr);
|
|
|
1104 |
++$chr;
|
|
|
1105 |
}
|
|
|
1106 |
if (($row == ($nrow - 2)) AND ($col == 0) AND (($ncol % 8) == 4)) {
|
|
|
1107 |
$marr = $this->placeCornerC($marr, $nrow, $ncol, $chr);
|
|
|
1108 |
++$chr;
|
|
|
1109 |
}
|
|
|
1110 |
if (($row == ($nrow + 4)) AND ($col == 2) AND (!($ncol % 8))) {
|
|
|
1111 |
$marr = $this->placeCornerD($marr, $nrow, $ncol, $chr);
|
|
|
1112 |
++$chr;
|
|
|
1113 |
}
|
|
|
1114 |
// sweep upward diagonally, inserting successive characters,
|
|
|
1115 |
do {
|
|
|
1116 |
if (($row < $nrow) AND ($col >= 0) AND (!$marr[(($row * $ncol) + $col)])) {
|
|
|
1117 |
$marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr);
|
|
|
1118 |
++$chr;
|
|
|
1119 |
}
|
|
|
1120 |
$row -= 2;
|
|
|
1121 |
$col += 2;
|
|
|
1122 |
} while (($row >= 0) AND ($col < $ncol));
|
|
|
1123 |
++$row;
|
|
|
1124 |
$col += 3;
|
|
|
1125 |
// & then sweep downward diagonally, inserting successive characters,...
|
|
|
1126 |
do {
|
|
|
1127 |
if (($row >= 0) AND ($col < $ncol) AND (!$marr[(($row * $ncol) + $col)])) {
|
|
|
1128 |
$marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr);
|
|
|
1129 |
++$chr;
|
|
|
1130 |
}
|
|
|
1131 |
$row += 2;
|
|
|
1132 |
$col -= 2;
|
|
|
1133 |
} while (($row < $nrow) AND ($col >= 0));
|
|
|
1134 |
$row += 3;
|
|
|
1135 |
++$col;
|
|
|
1136 |
// ... until the entire array is scanned
|
|
|
1137 |
} while (($row < $nrow) OR ($col < $ncol));
|
|
|
1138 |
// lastly, if the lower righthand corner is untouched, fill in fixed pattern
|
|
|
1139 |
if (!$marr[(($nrow * $ncol) - 1)]) {
|
|
|
1140 |
$marr[(($nrow * $ncol) - 1)] = 1;
|
|
|
1141 |
$marr[(($nrow * $ncol) - $ncol - 2)] = 1;
|
|
|
1142 |
}
|
|
|
1143 |
return $marr;
|
|
|
1144 |
}
|
|
|
1145 |
|
|
|
1146 |
} // end DataMatrix class
|
|
|
1147 |
//============================================================+
|
|
|
1148 |
// END OF FILE
|
|
|
1149 |
//============================================================+
|