root / drupal7 / sites / all / libraries / tcpdf-version / include / barcodes / datamatrix.php @ 5a7e6170
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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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|
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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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/**
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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 |
150 |
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 |
156 |
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 |
158 |
array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40 |
159 |
array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44 |
160 |
array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48 |
161 |
array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52 |
162 |
array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64 |
163 |
array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72 |
164 |
array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80 |
165 |
array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88 |
166 |
array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96 |
167 |
array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104 |
168 |
array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120 |
169 |
array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132 |
170 |
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 |
173 |
array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32 |
174 |
array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26 |
175 |
array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36 |
176 |
array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36 |
177 |
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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/**
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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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/**
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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 ---------------------------------------------------------------------------- |
192 |
'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
193 |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // |
194 |
0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // |
195 |
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 --------------------------------------------------------------------------- |
197 |
'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
198 |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, // |
199 |
0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, // |
200 |
0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),// |
201 |
'SH1' => array( // Shift 1 set ---------------------------------------------------------------------------------- |
202 |
0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, // |
203 |
0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, // |
204 |
0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, // |
205 |
0x1e=>0x1e,0x1f=>0x1f), // |
206 |
'SH2' => array( // Shift 2 set ---------------------------------------------------------------------------------- |
207 |
0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, // |
208 |
0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, // |
209 |
0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), // |
210 |
'S3C' => array( // Shift 3 set for C40 -------------------------------------------------------------------------- |
211 |
0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, // |
212 |
0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, // |
213 |
0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // |
214 |
0x7e=>0x1e,0x7f=>0x1f), |
215 |
'S3T' => array( // Shift 3 set for TEXT ------------------------------------------------------------------------- |
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 |
|
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// -----------------------------------------------------------------------------
|
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|
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/**
|
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* This is the class constructor.
|
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* Creates a datamatrix object
|
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* @param $code (string) Code to represent using Datamatrix.
|
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* @public
|
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*/
|
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public function __construct($code) { |
236 |
$barcode_array = array(); |
237 |
if ((is_null($code)) OR ($code == '\0') OR ($code == '')) { |
238 |
return false; |
239 |
} |
240 |
// get data codewords
|
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$cw = $this->getHighLevelEncoding($code); |
242 |
// number of data codewords
|
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$nd = count($cw); |
244 |
// check size
|
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if ($nd > 1558) { |
246 |
return false; |
247 |
} |
248 |
// get minimum required matrix size.
|
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foreach ($this->symbattr as $params) { |
250 |
if ($params[11] >= $nd) { |
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break;
|
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} |
253 |
} |
254 |
if ($params[11] < $nd) { |
255 |
// too much data
|
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return false; |
257 |
} elseif ($params[11] > $nd) { |
258 |
// add padding
|
259 |
if ($this->last_enc == ENC_EDF) { |
260 |
// switch to ASCII encoding
|
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$cw[] = 124; |
262 |
++$nd;
|
263 |
} elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) { |
264 |
// switch to ASCII encoding
|
265 |
$cw[] = 254; |
266 |
++$nd;
|
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} |
268 |
if ($params[11] > $nd) { |
269 |
// add first pad
|
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$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 |
//============================================================+
|