1 | <?php
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2 | //============================================================+
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3 | // File name : datamatrix.php
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4 | // Version : 1.0.008
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5 | // Begin : 2010-06-07
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6 | // Last Update : 2014-05-06
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7 | // Author : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
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8 | // License : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
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9 | // -------------------------------------------------------------------
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10 | // Copyright (C) 2010-2014 Nicola Asuni - Tecnick.com LTD
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11 | //
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12 | // This file is part of TCPDF software library.
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13 | //
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14 | // TCPDF is free software: you can redistribute it and/or modify it
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15 | // under the terms of the GNU Lesser General Public License as
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16 | // published by the Free Software Foundation, either version 3 of the
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17 | // License, or (at your option) any later version.
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18 | //
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19 | // TCPDF is distributed in the hope that it will be useful, but
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20 | // WITHOUT ANY WARRANTY; without even the implied warranty of
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21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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22 | // See the GNU Lesser General Public License for more details.
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23 | //
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24 | // You should have received a copy of the GNU Lesser General Public License
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25 | // along with TCPDF. If not, see <http://www.gnu.org/licenses/>.
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26 | //
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27 | // See LICENSE.TXT file for more information.
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28 | // -------------------------------------------------------------------
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29 | //
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30 | // DESCRIPTION :
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31 | //
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32 | // Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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33 | // DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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34 | //============================================================+
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35 |
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36 | /**
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37 | * @file
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38 | * Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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39 | * DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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40 | *
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41 | * @package com.tecnick.tcpdf
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42 | * @author Nicola Asuni
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43 | * @version 1.0.008
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44 | */
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45 |
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46 | // custom definitions
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47 | if (!defined('DATAMATRIXDEFS')) {
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48 |
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49 | /**
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50 | * Indicate that definitions for this class are set
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51 | */
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52 | define('DATAMATRIXDEFS', true);
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53 |
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54 | // -----------------------------------------------------
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55 |
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56 | } // end of custom definitions
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57 |
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58 | // #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
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59 |
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60 |
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61 | /**
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62 | * ASCII encoding: ASCII character 0 to 127 (1 byte per CW)
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63 | */
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64 | define('ENC_ASCII', 0);
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65 |
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66 | /**
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67 | * C40 encoding: Upper-case alphanumeric (3/2 bytes per CW)
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68 | */
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69 | define('ENC_C40', 1);
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70 |
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71 | /**
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72 | * TEXT encoding: Lower-case alphanumeric (3/2 bytes per CW)
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73 | */
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74 | define('ENC_TXT', 2);
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75 |
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76 | /**
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77 | * X12 encoding: ANSI X12 (3/2 byte per CW)
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78 | */
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79 | define('ENC_X12', 3);
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80 |
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81 | /**
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82 | * EDIFACT encoding: ASCII character 32 to 94 (4/3 bytes per CW)
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83 | */
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84 | define('ENC_EDF', 4);
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85 |
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86 | /**
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87 | * BASE 256 encoding: ASCII character 0 to 255 (1 byte per CW)
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88 | */
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89 | define('ENC_BASE256', 5);
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90 |
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91 | /**
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92 | * ASCII extended encoding: ASCII character 128 to 255 (1/2 byte per CW)
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93 | */
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94 | define('ENC_ASCII_EXT', 6);
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95 |
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96 | /**
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97 | * ASCII number encoding: ASCII digits (2 bytes per CW)
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98 | */
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99 | define('ENC_ASCII_NUM', 7);
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100 |
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101 | /**
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102 | * @class Datamatrix
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103 | * Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
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104 | * DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code.
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105 | *
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106 | * @package com.tecnick.tcpdf
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107 | * @author Nicola Asuni
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108 | * @version 1.0.004
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109 | */
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110 | class Datamatrix {
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111 |
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112 | /**
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113 | * Barcode array to be returned which is readable by TCPDF.
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114 | * @protected
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115 | */
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116 | protected $barcode_array = array();
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117 |
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118 | /**
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119 | * Store last used encoding for data codewords.
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120 | * @protected
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121 | */
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122 | protected $last_enc = ENC_ASCII;
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123 |
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124 | /**
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125 | * Table of Data Matrix ECC 200 Symbol Attributes:<ul>
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126 | * <li>total matrix rows (including finder pattern)</li>
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127 | * <li>total matrix cols (including finder pattern)</li>
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128 | * <li>total matrix rows (without finder pattern)</li>
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129 | * <li>total matrix cols (without finder pattern)</li>
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130 | * <li>region data rows (with finder pattern)</li>
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131 | * <li>region data col (with finder pattern)</li>
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132 | * <li>region data rows (without finder pattern)</li>
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133 | * <li>region data col (without finder pattern)</li>
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134 | * <li>horizontal regions</li>
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135 | * <li>vertical regions</li>
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136 | * <li>regions</li>
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137 | * <li>data codewords</li>
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138 | * <li>error codewords</li>
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139 | * <li>blocks</li>
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140 | * <li>data codewords per block</li>
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141 | * <li>error codewords per block</li>
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142 | * </ul>
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143 | * @protected
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144 | */
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145 | protected $symbattr = array(
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146 | // square form ---------------------------------------------------------------------------------------
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147 | array(0x00a,0x00a,0x008,0x008,0x00a,0x00a,0x008,0x008,0x001,0x001,0x001,0x003,0x005,0x001,0x003,0x005), // 10x10
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148 | array(0x00c,0x00c,0x00a,0x00a,0x00c,0x00c,0x00a,0x00a,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 12x12
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149 | array(0x00e,0x00e,0x00c,0x00c,0x00e,0x00e,0x00c,0x00c,0x001,0x001,0x001,0x008,0x00a,0x001,0x008,0x00a), // 14x14
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150 | array(0x010,0x010,0x00e,0x00e,0x010,0x010,0x00e,0x00e,0x001,0x001,0x001,0x00c,0x00c,0x001,0x00c,0x00c), // 16x16
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151 | array(0x012,0x012,0x010,0x010,0x012,0x012,0x010,0x010,0x001,0x001,0x001,0x012,0x00e,0x001,0x012,0x00e), // 18x18
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152 | array(0x014,0x014,0x012,0x012,0x014,0x014,0x012,0x012,0x001,0x001,0x001,0x016,0x012,0x001,0x016,0x012), // 20x20
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153 | array(0x016,0x016,0x014,0x014,0x016,0x016,0x014,0x014,0x001,0x001,0x001,0x01e,0x014,0x001,0x01e,0x014), // 22x22
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154 | array(0x018,0x018,0x016,0x016,0x018,0x018,0x016,0x016,0x001,0x001,0x001,0x024,0x018,0x001,0x024,0x018), // 24x24
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155 | array(0x01a,0x01a,0x018,0x018,0x01a,0x01a,0x018,0x018,0x001,0x001,0x001,0x02c,0x01c,0x001,0x02c,0x01c), // 26x26
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156 | array(0x020,0x020,0x01c,0x01c,0x010,0x010,0x00e,0x00e,0x002,0x002,0x004,0x03e,0x024,0x001,0x03e,0x024), // 32x32
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157 | array(0x024,0x024,0x020,0x020,0x012,0x012,0x010,0x010,0x002,0x002,0x004,0x056,0x02a,0x001,0x056,0x02a), // 36x36
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158 | array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40
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159 | array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44
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160 | array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48
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161 | array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52
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162 | array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64
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163 | array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72
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164 | array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80
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165 | array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88
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166 | array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96
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167 | array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104
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168 | array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120
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169 | array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132
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170 | array(0x090,0x090,0x084,0x084,0x018,0x018,0x016,0x016,0x006,0x006,0x024,0x616,0x26c,0x00a,0x09c,0x03e), // 144x144
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171 | // rectangular form (currently unused) ---------------------------------------------------------------------------
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172 | array(0x008,0x012,0x006,0x010,0x008,0x012,0x006,0x010,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 8x18
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173 | array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32
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174 | array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26
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175 | array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36
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176 | array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36
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177 | array(0x010,0x030,0x00e,0x02c,0x010,0x018,0x00e,0x016,0x001,0x002,0x002,0x031,0x01c,0x001,0x031,0x01c) // 16x48
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178 | );
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179 |
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180 | /**
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181 | * Map encodation modes whit character sets.
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182 | * @protected
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183 | */
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184 | protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12');
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185 |
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186 | /**
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187 | * Basic set of characters for each encodation mode.
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188 | * @protected
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189 | */
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190 | protected $chset = array(
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191 | 'C40' => array( // Basic set for C40 ----------------------------------------------------------------------------
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192 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
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193 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, //
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194 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, //
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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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196 | 'TXT' => array( // Basic set for TEXT ---------------------------------------------------------------------------
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197 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
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198 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, //
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199 | 0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, //
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200 | 0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),//
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201 | 'SH1' => array( // Shift 1 set ----------------------------------------------------------------------------------
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202 | 0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, //
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203 | 0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, //
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204 | 0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, //
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205 | 0x1e=>0x1e,0x1f=>0x1f), //
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206 | 'SH2' => array( // Shift 2 set ----------------------------------------------------------------------------------
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207 | 0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, //
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208 | 0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, //
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209 | 0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), //
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210 | 'S3C' => array( // Shift 3 set for C40 --------------------------------------------------------------------------
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211 | 0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, //
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212 | 0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, //
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213 | 0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, //
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214 | 0x7e=>0x1e,0x7f=>0x1f),
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215 | '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, //
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217 | 0x4a=>0x0a,0x4b=>0x0b,0x4c=>0x0c,0x4d=>0x0d,0x4e=>0x0e,0x4f=>0x0f,0x50=>0x10,0x51=>0x11,0x52=>0x12,0x53=>0x13, //
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218 | 0x54=>0x14,0x55=>0x15,0x56=>0x16,0x57=>0x17,0x58=>0x18,0x59=>0x19,0x5a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, //
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219 | 0x7e=>0x1e,0x7f=>0x1f), //
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220 | 'X12' => array( // Set for X12 ----------------------------------------------------------------------------------
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221 | 0x0d=>0x00,0x2a=>0x01,0x3e=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, //
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222 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, //
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223 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, //
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224 | 0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27) //
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225 | );
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226 |
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227 | // -----------------------------------------------------------------------------
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228 |
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229 | /**
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230 | * This is the class constructor.
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231 | * Creates a datamatrix object
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232 | * @param $code (string) Code to represent using Datamatrix.
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233 | * @public
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234 | */
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235 | public function __construct($code) {
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236 | $barcode_array = array();
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237 | if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {
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238 | return false;
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239 | }
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240 | // get data codewords
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241 | $cw = $this->getHighLevelEncoding($code);
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242 | // number of data codewords
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243 | $nd = count($cw);
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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] > $nd) {
|
---|
258 | // add padding
|
---|
259 | if ((($params[11] - $nd) > 1) AND ($cw[($nd - 1)] != 254)) {
|
---|
260 | if ($this->last_enc == ENC_EDF) {
|
---|
261 | // switch to ASCII encoding
|
---|
262 | $cw[] = 124;
|
---|
263 | ++$nd;
|
---|
264 | } elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) {
|
---|
265 | // switch to ASCII encoding
|
---|
266 | $cw[] = 254;
|
---|
267 | ++$nd;
|
---|
268 | }
|
---|
269 | }
|
---|
270 | if ($params[11] > $nd) {
|
---|
271 | // add first pad
|
---|
272 | $cw[] = 129;
|
---|
273 | ++$nd;
|
---|
274 | // add remaining pads
|
---|
275 | for ($i = $nd; $i < $params[11]; ++$i) {
|
---|
276 | $cw[] = $this->get253StateCodeword(129, $i);
|
---|
277 | }
|
---|
278 | }
|
---|
279 | }
|
---|
280 | // add error correction codewords
|
---|
281 | $cw = $this->getErrorCorrection($cw, $params[13], $params[14], $params[15]);
|
---|
282 | // initialize empty arrays
|
---|
283 | $grid = array_fill(0, ($params[2] * $params[3]), 0);
|
---|
284 | // get placement map
|
---|
285 | $places = $this->getPlacementMap($params[2], $params[3]);
|
---|
286 | // fill the grid with data
|
---|
287 | $grid = array();
|
---|
288 | $i = 0;
|
---|
289 | // region data row max index
|
---|
290 | $rdri = ($params[4] - 1);
|
---|
291 | // region data column max index
|
---|
292 | $rdci = ($params[5] - 1);
|
---|
293 | // for each vertical region
|
---|
294 | for ($vr = 0; $vr < $params[9]; ++$vr) {
|
---|
295 | // for each row on region
|
---|
296 | for ($r = 0; $r < $params[4]; ++$r) {
|
---|
297 | // get row
|
---|
298 | $row = (($vr * $params[4]) + $r);
|
---|
299 | // for each horizontal region
|
---|
300 | for ($hr = 0; $hr < $params[8]; ++$hr) {
|
---|
301 | // for each column on region
|
---|
302 | for ($c = 0; $c < $params[5]; ++$c) {
|
---|
303 | // get column
|
---|
304 | $col = (($hr * $params[5]) + $c);
|
---|
305 | // braw bits by case
|
---|
306 | if ($r == 0) {
|
---|
307 | // top finder pattern
|
---|
308 | if ($c % 2) {
|
---|
309 | $grid[$row][$col] = 0;
|
---|
310 | } else {
|
---|
311 | $grid[$row][$col] = 1;
|
---|
312 | }
|
---|
313 | } elseif ($r == $rdri) {
|
---|
314 | // bottom finder pattern
|
---|
315 | $grid[$row][$col] = 1;
|
---|
316 | } elseif ($c == 0) {
|
---|
317 | // left finder pattern
|
---|
318 | $grid[$row][$col] = 1;
|
---|
319 | } elseif ($c == $rdci) {
|
---|
320 | // right finder pattern
|
---|
321 | if ($r % 2) {
|
---|
322 | $grid[$row][$col] = 1;
|
---|
323 | } else {
|
---|
324 | $grid[$row][$col] = 0;
|
---|
325 | }
|
---|
326 | } else { // data bit
|
---|
327 | if ($places[$i] < 2) {
|
---|
328 | $grid[$row][$col] = $places[$i];
|
---|
329 | } else {
|
---|
330 | // codeword ID
|
---|
331 | $cw_id = (floor($places[$i] / 10) - 1);
|
---|
332 | // codeword BIT mask
|
---|
333 | $cw_bit = pow(2, (8 - ($places[$i] % 10)));
|
---|
334 | $grid[$row][$col] = (($cw[$cw_id] & $cw_bit) == 0) ? 0 : 1;
|
---|
335 | }
|
---|
336 | ++$i;
|
---|
337 | }
|
---|
338 | }
|
---|
339 | }
|
---|
340 | }
|
---|
341 | }
|
---|
342 | $this->barcode_array['num_rows'] = $params[0];
|
---|
343 | $this->barcode_array['num_cols'] = $params[1];
|
---|
344 | $this->barcode_array['bcode'] = $grid;
|
---|
345 | }
|
---|
346 |
|
---|
347 | /**
|
---|
348 | * Returns a barcode array which is readable by TCPDF
|
---|
349 | * @return array barcode array readable by TCPDF;
|
---|
350 | * @public
|
---|
351 | */
|
---|
352 | public function getBarcodeArray() {
|
---|
353 | return $this->barcode_array;
|
---|
354 | }
|
---|
355 |
|
---|
356 | /**
|
---|
357 | * Product of two numbers in a Power-of-Two Galois Field
|
---|
358 | * @param $a (int) first number to multiply.
|
---|
359 | * @param $b (int) second number to multiply.
|
---|
360 | * @param $log (array) Log table.
|
---|
361 | * @param $alog (array) Anti-Log table.
|
---|
362 | * @param $gf (array) Number of Factors of the Reed-Solomon polynomial.
|
---|
363 | * @return int product
|
---|
364 | * @protected
|
---|
365 | */
|
---|
366 | protected function getGFProduct($a, $b, $log, $alog, $gf) {
|
---|
367 | if (($a == 0) OR ($b == 0)) {
|
---|
368 | return 0;
|
---|
369 | }
|
---|
370 | return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]);
|
---|
371 | }
|
---|
372 |
|
---|
373 | /**
|
---|
374 | * Add error correction codewords to data codewords array (ANNEX E).
|
---|
375 | * @param $wd (array) Array of datacodewords.
|
---|
376 | * @param $nb (int) Number of blocks.
|
---|
377 | * @param $nd (int) Number of data codewords per block.
|
---|
378 | * @param $nc (int) Number of correction codewords per block.
|
---|
379 | * @param $gf (int) numner of fields on log/antilog table (power of 2).
|
---|
380 | * @param $pp (int) The value of its prime modulus polynomial (301 for ECC200).
|
---|
381 | * @return array data codewords + error codewords
|
---|
382 | * @protected
|
---|
383 | */
|
---|
384 | protected function getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301) {
|
---|
385 | // generate the log ($log) and antilog ($alog) tables
|
---|
386 | $log[0] = 0;
|
---|
387 | $alog[0] = 1;
|
---|
388 | for ($i = 1; $i < $gf; ++$i) {
|
---|
389 | $alog[$i] = ($alog[($i - 1)] * 2);
|
---|
390 | if ($alog[$i] >= $gf) {
|
---|
391 | $alog[$i] ^= $pp;
|
---|
392 | }
|
---|
393 | $log[$alog[$i]] = $i;
|
---|
394 | }
|
---|
395 | ksort($log);
|
---|
396 | // generate the polynomial coefficients (c)
|
---|
397 | $c = array_fill(0, ($nc + 1), 0);
|
---|
398 | $c[0] = 1;
|
---|
399 | for ($i = 1; $i <= $nc; ++$i) {
|
---|
400 | $c[$i] = $c[($i-1)];
|
---|
401 | for ($j = ($i - 1); $j >= 1; --$j) {
|
---|
402 | $c[$j] = $c[($j - 1)] ^ $this->getGFProduct($c[$j], $alog[$i], $log, $alog, $gf);
|
---|
403 | }
|
---|
404 | $c[0] = $this->getGFProduct($c[0], $alog[$i], $log, $alog, $gf);
|
---|
405 | }
|
---|
406 | ksort($c);
|
---|
407 | // total number of data codewords
|
---|
408 | $num_wd = ($nb * $nd);
|
---|
409 | // total number of error codewords
|
---|
410 | $num_we = ($nb * $nc);
|
---|
411 | // for each block
|
---|
412 | for ($b = 0; $b < $nb; ++$b) {
|
---|
413 | // create interleaved data block
|
---|
414 | $block = array();
|
---|
415 | for ($n = $b; $n < $num_wd; $n += $nb) {
|
---|
416 | $block[] = $wd[$n];
|
---|
417 | }
|
---|
418 | // initialize error codewords
|
---|
419 | $we = array_fill(0, ($nc + 1), 0);
|
---|
420 | // calculate error correction codewords for this block
|
---|
421 | for ($i = 0; $i < $nd; ++$i) {
|
---|
422 | $k = ($we[0] ^ $block[$i]);
|
---|
423 | for ($j = 0; $j < $nc; ++$j) {
|
---|
424 | $we[$j] = ($we[($j + 1)] ^ $this->getGFProduct($k, $c[($nc - $j - 1)], $log, $alog, $gf));
|
---|
425 | }
|
---|
426 | }
|
---|
427 | // add error codewords at the end of data codewords
|
---|
428 | $j = 0;
|
---|
429 | for ($i = $b; $i < $num_we; $i += $nb) {
|
---|
430 | $wd[($num_wd + $i)] = $we[$j];
|
---|
431 | ++$j;
|
---|
432 | }
|
---|
433 | }
|
---|
434 | // reorder codewords
|
---|
435 | ksort($wd);
|
---|
436 | return $wd;
|
---|
437 | }
|
---|
438 |
|
---|
439 | /**
|
---|
440 | * Return the 253-state codeword
|
---|
441 | * @param $cwpad (int) Pad codeword.
|
---|
442 | * @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
---|
443 | * @return pad codeword
|
---|
444 | * @protected
|
---|
445 | */
|
---|
446 | protected function get253StateCodeword($cwpad, $cwpos) {
|
---|
447 | $pad = ($cwpad + (((149 * $cwpos) % 253) + 1));
|
---|
448 | if ($pad > 254) {
|
---|
449 | $pad -= 254;
|
---|
450 | }
|
---|
451 | return $pad;
|
---|
452 | }
|
---|
453 |
|
---|
454 | /**
|
---|
455 | * Return the 255-state codeword
|
---|
456 | * @param $cwpad (int) Pad codeword.
|
---|
457 | * @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
---|
458 | * @return pad codeword
|
---|
459 | * @protected
|
---|
460 | */
|
---|
461 | protected function get255StateCodeword($cwpad, $cwpos) {
|
---|
462 | $pad = ($cwpad + (((149 * $cwpos) % 255) + 1));
|
---|
463 | if ($pad > 255) {
|
---|
464 | $pad -= 256;
|
---|
465 | }
|
---|
466 | return $pad;
|
---|
467 | }
|
---|
468 |
|
---|
469 | /**
|
---|
470 | * Returns true if the char belongs to the selected mode
|
---|
471 | * @param $chr (int) Character (byte) to check.
|
---|
472 | * @param $mode (int) Current encoding mode.
|
---|
473 | * @return boolean true if the char is of the selected mode.
|
---|
474 | * @protected
|
---|
475 | */
|
---|
476 | protected function isCharMode($chr, $mode) {
|
---|
477 | $status = false;
|
---|
478 | switch ($mode) {
|
---|
479 | case ENC_ASCII: { // ASCII character 0 to 127
|
---|
480 | $status = (($chr >= 0) AND ($chr <= 127));
|
---|
481 | break;
|
---|
482 | }
|
---|
483 | case ENC_C40: { // Upper-case alphanumeric
|
---|
484 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 65) AND ($chr <= 90)));
|
---|
485 | break;
|
---|
486 | }
|
---|
487 | case ENC_TXT: { // Lower-case alphanumeric
|
---|
488 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 97) AND ($chr <= 122)));
|
---|
489 | break;
|
---|
490 | }
|
---|
491 | case ENC_X12: { // ANSI X12
|
---|
492 | $status = (($chr == 13) OR ($chr == 42) OR ($chr == 62));
|
---|
493 | break;
|
---|
494 | }
|
---|
495 | case ENC_EDF: { // ASCII character 32 to 94
|
---|
496 | $status = (($chr >= 32) AND ($chr <= 94));
|
---|
497 | break;
|
---|
498 | }
|
---|
499 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page)
|
---|
500 | $status = (($chr == 232) OR ($chr == 233) OR ($chr == 234) OR ($chr == 241));
|
---|
501 | break;
|
---|
502 | }
|
---|
503 | case ENC_ASCII_EXT: { // ASCII character 128 to 255
|
---|
504 | $status = (($chr >= 128) AND ($chr <= 255));
|
---|
505 | break;
|
---|
506 | }
|
---|
507 | case ENC_ASCII_NUM: { // ASCII digits
|
---|
508 | $status = (($chr >= 48) AND ($chr <= 57));
|
---|
509 | break;
|
---|
510 | }
|
---|
511 | }
|
---|
512 | return $status;
|
---|
513 | }
|
---|
514 |
|
---|
515 | /**
|
---|
516 | * The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S).
|
---|
517 | * @param $data (string) data to encode
|
---|
518 | * @param $pos (int) current position
|
---|
519 | * @param $mode (int) current encoding mode
|
---|
520 | * @return int encoding mode
|
---|
521 | * @protected
|
---|
522 | */
|
---|
523 | protected function lookAheadTest($data, $pos, $mode) {
|
---|
524 | $data_length = strlen($data);
|
---|
525 | if ($pos >= $data_length) {
|
---|
526 | return $mode;
|
---|
527 | }
|
---|
528 | $charscount = 0; // count processed chars
|
---|
529 | // STEP J
|
---|
530 | if ($mode == ENC_ASCII) {
|
---|
531 | $numch = array(0, 1, 1, 1, 1, 1.25);
|
---|
532 | } else {
|
---|
533 | $numch = array(1, 2, 2, 2, 2, 2.25);
|
---|
534 | $numch[$mode] = 0;
|
---|
535 | }
|
---|
536 | while (true) {
|
---|
537 | // STEP K
|
---|
538 | if (($pos + $charscount) == $data_length) {
|
---|
539 | if ($numch[ENC_ASCII] <= ceil(min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
---|
540 | return ENC_ASCII;
|
---|
541 | }
|
---|
542 | if ($numch[ENC_BASE256] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) {
|
---|
543 | return ENC_BASE256;
|
---|
544 | }
|
---|
545 | if ($numch[ENC_EDF] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256]))) {
|
---|
546 | return ENC_EDF;
|
---|
547 | }
|
---|
548 | if ($numch[ENC_TXT] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
---|
549 | return ENC_TXT;
|
---|
550 | }
|
---|
551 | if ($numch[ENC_X12] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256]))) {
|
---|
552 | return ENC_X12;
|
---|
553 | }
|
---|
554 | return ENC_C40;
|
---|
555 | }
|
---|
556 | // get char
|
---|
557 | $chr = ord($data[$pos + $charscount]);
|
---|
558 | $charscount++;
|
---|
559 | // STEP L
|
---|
560 | if ($this->isCharMode($chr, ENC_ASCII_NUM)) {
|
---|
561 | $numch[ENC_ASCII] += (1 / 2);
|
---|
562 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
563 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]);
|
---|
564 | $numch[ENC_ASCII] += 2;
|
---|
565 | } else {
|
---|
566 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]);
|
---|
567 | $numch[ENC_ASCII] += 1;
|
---|
568 | }
|
---|
569 | // STEP M
|
---|
570 | if ($this->isCharMode($chr, ENC_C40)) {
|
---|
571 | $numch[ENC_C40] += (2 / 3);
|
---|
572 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
573 | $numch[ENC_C40] += (8 / 3);
|
---|
574 | } else {
|
---|
575 | $numch[ENC_C40] += (4 / 3);
|
---|
576 | }
|
---|
577 | // STEP N
|
---|
578 | if ($this->isCharMode($chr, ENC_TXT)) {
|
---|
579 | $numch[ENC_TXT] += (2 / 3);
|
---|
580 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
581 | $numch[ENC_TXT] += (8 / 3);
|
---|
582 | } else {
|
---|
583 | $numch[ENC_TXT] += (4 / 3);
|
---|
584 | }
|
---|
585 | // STEP O
|
---|
586 | if ($this->isCharMode($chr, ENC_X12) OR $this->isCharMode($chr, ENC_C40)) {
|
---|
587 | $numch[ENC_X12] += (2 / 3);
|
---|
588 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
589 | $numch[ENC_X12] += (13 / 3);
|
---|
590 | } else {
|
---|
591 | $numch[ENC_X12] += (10 / 3);
|
---|
592 | }
|
---|
593 | // STEP P
|
---|
594 | if ($this->isCharMode($chr, ENC_EDF)) {
|
---|
595 | $numch[ENC_EDF] += (3 / 4);
|
---|
596 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
597 | $numch[ENC_EDF] += (17 / 4);
|
---|
598 | } else {
|
---|
599 | $numch[ENC_EDF] += (13 / 4);
|
---|
600 | }
|
---|
601 | // STEP Q
|
---|
602 | if ($this->isCharMode($chr, ENC_BASE256)) {
|
---|
603 | $numch[ENC_BASE256] += 4;
|
---|
604 | } else {
|
---|
605 | $numch[ENC_BASE256] += 1;
|
---|
606 | }
|
---|
607 | // STEP R
|
---|
608 | if ($charscount >= 4) {
|
---|
609 | if (($numch[ENC_ASCII] + 1) <= min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
---|
610 | return ENC_ASCII;
|
---|
611 | }
|
---|
612 | if ((($numch[ENC_BASE256] + 1) <= $numch[ENC_ASCII])
|
---|
613 | OR (($numch[ENC_BASE256] + 1) < min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) {
|
---|
614 | return ENC_BASE256;
|
---|
615 | }
|
---|
616 | if (($numch[ENC_EDF] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256])) {
|
---|
617 | return ENC_EDF;
|
---|
618 | }
|
---|
619 | if (($numch[ENC_TXT] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
---|
620 | return ENC_TXT;
|
---|
621 | }
|
---|
622 | if (($numch[ENC_X12] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
---|
623 | return ENC_X12;
|
---|
624 | }
|
---|
625 | if (($numch[ENC_C40] + 1) < min($numch[ENC_ASCII], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) {
|
---|
626 | if ($numch[ENC_C40] < $numch[ENC_X12]) {
|
---|
627 | return ENC_C40;
|
---|
628 | }
|
---|
629 | if ($numch[ENC_C40] == $numch[ENC_X12]) {
|
---|
630 | $k = ($pos + $charscount + 1);
|
---|
631 | while ($k < $data_length) {
|
---|
632 | $tmpchr = ord($data[$k]);
|
---|
633 | if ($this->isCharMode($tmpchr, ENC_X12)) {
|
---|
634 | return ENC_X12;
|
---|
635 | } elseif (!($this->isCharMode($tmpchr, ENC_X12) OR $this->isCharMode($tmpchr, ENC_C40))) {
|
---|
636 | break;
|
---|
637 | }
|
---|
638 | ++$k;
|
---|
639 | }
|
---|
640 | return ENC_C40;
|
---|
641 | }
|
---|
642 | }
|
---|
643 | }
|
---|
644 | } // end of while
|
---|
645 | }
|
---|
646 |
|
---|
647 | /**
|
---|
648 | * Get the switching codeword to a new encoding mode (latch codeword)
|
---|
649 | * @param $mode (int) New encoding mode.
|
---|
650 | * @return (int) Switch codeword.
|
---|
651 | * @protected
|
---|
652 | */
|
---|
653 | protected function getSwitchEncodingCodeword($mode) {
|
---|
654 | switch ($mode) {
|
---|
655 | case ENC_ASCII: { // ASCII character 0 to 127
|
---|
656 | $cw = 254;
|
---|
657 | if ($this->last_enc == ENC_EDF) {
|
---|
658 | $cw = 124;
|
---|
659 | }
|
---|
660 | break;
|
---|
661 | }
|
---|
662 | case ENC_C40: { // Upper-case alphanumeric
|
---|
663 | $cw = 230;
|
---|
664 | break;
|
---|
665 | }
|
---|
666 | case ENC_TXT: { // Lower-case alphanumeric
|
---|
667 | $cw = 239;
|
---|
668 | break;
|
---|
669 | }
|
---|
670 | case ENC_X12: { // ANSI X12
|
---|
671 | $cw = 238;
|
---|
672 | break;
|
---|
673 | }
|
---|
674 | case ENC_EDF: { // ASCII character 32 to 94
|
---|
675 | $cw = 240;
|
---|
676 | break;
|
---|
677 | }
|
---|
678 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page)
|
---|
679 | $cw = 231;
|
---|
680 | break;
|
---|
681 | }
|
---|
682 | }
|
---|
683 | return $cw;
|
---|
684 | }
|
---|
685 |
|
---|
686 | /**
|
---|
687 | * Choose the minimum matrix size and return the max number of data codewords.
|
---|
688 | * @param $numcw (int) Number of current codewords.
|
---|
689 | * @return number of data codewords in matrix
|
---|
690 | * @protected
|
---|
691 | */
|
---|
692 | protected function getMaxDataCodewords($numcw) {
|
---|
693 | foreach ($this->symbattr as $key => $matrix) {
|
---|
694 | if ($matrix[11] >= $numcw) {
|
---|
695 | return $matrix[11];
|
---|
696 | }
|
---|
697 | }
|
---|
698 | return 0;
|
---|
699 | }
|
---|
700 |
|
---|
701 | /**
|
---|
702 | * Get high level encoding using the minimum symbol data characters for ECC 200
|
---|
703 | * @param $data (string) data to encode
|
---|
704 | * @return array of codewords
|
---|
705 | * @protected
|
---|
706 | */
|
---|
707 | protected function getHighLevelEncoding($data) {
|
---|
708 | // STEP A. Start in ASCII encodation.
|
---|
709 | $enc = ENC_ASCII; // current encoding mode
|
---|
710 | $pos = 0; // current position
|
---|
711 | $cw = array(); // array of codewords to be returned
|
---|
712 | $cw_num = 0; // number of data codewords
|
---|
713 | $data_length = strlen($data); // number of chars
|
---|
714 | while ($pos < $data_length) {
|
---|
715 | // set last used encoding
|
---|
716 | $this->last_enc = $enc;
|
---|
717 | switch ($enc) {
|
---|
718 | case ENC_ASCII: { // STEP B. While in ASCII encodation
|
---|
719 | if (($data_length > 1) AND ($pos < ($data_length - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) {
|
---|
720 | // 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode.
|
---|
721 | $cw[] = (intval(substr($data, $pos, 2)) + 130);
|
---|
722 | ++$cw_num;
|
---|
723 | $pos += 2;
|
---|
724 | } else {
|
---|
725 | // 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
---|
726 | $newenc = $this->lookAheadTest($data, $pos, $enc);
|
---|
727 | if ($newenc != $enc) {
|
---|
728 | // switch to new encoding
|
---|
729 | $enc = $newenc;
|
---|
730 | $cw[] = $this->getSwitchEncodingCodeword($enc);
|
---|
731 | ++$cw_num;
|
---|
732 | } else {
|
---|
733 | // get new byte
|
---|
734 | $chr = ord($data[$pos]);
|
---|
735 | ++$pos;
|
---|
736 | if ($this->isCharMode($chr, ENC_ASCII_EXT)) {
|
---|
737 | // 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.
|
---|
738 | $cw[] = 235;
|
---|
739 | $cw[] = ($chr - 127);
|
---|
740 | $cw_num += 2;
|
---|
741 | } else {
|
---|
742 | // 4. Otherwise process the next data character in ASCII encodation.
|
---|
743 | $cw[] = ($chr + 1);
|
---|
744 | ++$cw_num;
|
---|
745 | }
|
---|
746 | }
|
---|
747 | }
|
---|
748 | break;
|
---|
749 | }
|
---|
750 | case ENC_C40 : // Upper-case alphanumeric
|
---|
751 | case ENC_TXT : // Lower-case alphanumeric
|
---|
752 | case ENC_X12 : { // ANSI X12
|
---|
753 | $temp_cw = array();
|
---|
754 | $p = 0;
|
---|
755 | $epos = $pos;
|
---|
756 | // get charset ID
|
---|
757 | $set_id = $this->chset_id[$enc];
|
---|
758 | // get basic charset for current encoding
|
---|
759 | $charset = $this->chset[$set_id];
|
---|
760 | do {
|
---|
761 | // 2. process the next character in C40 encodation.
|
---|
762 | $chr = ord($data[$epos]);
|
---|
763 | ++$epos;
|
---|
764 | // check for extended character
|
---|
765 | if ($chr & 0x80) {
|
---|
766 | if ($enc == ENC_X12) {
|
---|
767 | return false;
|
---|
768 | }
|
---|
769 | $chr = ($chr & 0x7f);
|
---|
770 | $temp_cw[] = 1; // shift 2
|
---|
771 | $temp_cw[] = 30; // upper shift
|
---|
772 | $p += 2;
|
---|
773 | }
|
---|
774 | if (isset($charset[$chr])) {
|
---|
775 | $temp_cw[] = $charset[$chr];
|
---|
776 | ++$p;
|
---|
777 | } else {
|
---|
778 | if (isset($this->chset['SH1'][$chr])) {
|
---|
779 | $temp_cw[] = 0; // shift 1
|
---|
780 | $shiftset = $this->chset['SH1'];
|
---|
781 | } elseif (isset($chr, $this->chset['SH2'][$chr])) {
|
---|
782 | $temp_cw[] = 1; // shift 2
|
---|
783 | $shiftset = $this->chset['SH2'];
|
---|
784 | } elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) {
|
---|
785 | $temp_cw[] = 2; // shift 3
|
---|
786 | $shiftset = $this->chset['S3C'];
|
---|
787 | } elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) {
|
---|
788 | $temp_cw[] = 2; // shift 3
|
---|
789 | $shiftset = $this->chset['S3T'];
|
---|
790 | } else {
|
---|
791 | return false;
|
---|
792 | }
|
---|
793 | $temp_cw[] = $shiftset[$chr];
|
---|
794 | $p += 2;
|
---|
795 | }
|
---|
796 | if ($p >= 3) {
|
---|
797 | $c1 = array_shift($temp_cw);
|
---|
798 | $c2 = array_shift($temp_cw);
|
---|
799 | $c3 = array_shift($temp_cw);
|
---|
800 | $p -= 3;
|
---|
801 | $tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1);
|
---|
802 | $cw[] = ($tmp >> 8);
|
---|
803 | $cw[] = ($tmp % 256);
|
---|
804 | $cw_num += 2;
|
---|
805 | $pos = $epos;
|
---|
806 | // 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.
|
---|
807 | $newenc = $this->lookAheadTest($data, $pos, $enc);
|
---|
808 | if ($newenc != $enc) {
|
---|
809 | // switch to new encoding
|
---|
810 | $enc = $newenc;
|
---|
811 | if ($enc != ENC_ASCII) {
|
---|
812 | // set unlatch character
|
---|
813 | $cw[] = $this->getSwitchEncodingCodeword(ENC_ASCII);
|
---|
814 | ++$cw_num;
|
---|
815 | }
|
---|
816 | $cw[] = $this->getSwitchEncodingCodeword($enc);
|
---|
817 | ++$cw_num;
|
---|
818 | $pos -= $p;
|
---|
819 | $p = 0;
|
---|
820 | break;
|
---|
821 | }
|
---|
822 | }
|
---|
823 | } while (($p > 0) AND ($epos < $data_length));
|
---|
824 | // process last data (if any)
|
---|
825 | if ($p > 0) {
|
---|
826 | // get remaining number of data symbols
|
---|
827 | $cwr = ($this->getMaxDataCodewords($cw_num) - $cw_num);
|
---|
828 | if (($cwr == 1) AND ($p == 1)) {
|
---|
829 | // d. If one symbol character remains and one C40 value (data character) remains to be encoded
|
---|
830 | $c1 = array_shift($temp_cw);
|
---|
831 | --$p;
|
---|
832 | $cw[] = ($chr + 1);
|
---|
833 | ++$cw_num;
|
---|
834 | $pos = $epos;
|
---|
835 | $enc = ENC_ASCII;
|
---|
836 | $this->last_enc = $enc;
|
---|
837 | } elseif (($cwr == 2) AND ($p == 1)) {
|
---|
838 | // c. If two symbol characters remain and only one C40 value (data character) remains to be encoded
|
---|
839 | $c1 = array_shift($temp_cw);
|
---|
840 | --$p;
|
---|
841 | $cw[] = 254;
|
---|
842 | $cw[] = ($chr + 1);
|
---|
843 | $cw_num += 2;
|
---|
844 | $pos = $epos;
|
---|
845 | $enc = ENC_ASCII;
|
---|
846 | $this->last_enc = $enc;
|
---|
847 | } elseif (($cwr == 2) AND ($p == 2)) {
|
---|
848 | // b. If two symbol characters remain and two C40 values remain to be encoded
|
---|
849 | $c1 = array_shift($temp_cw);
|
---|
850 | $c2 = array_shift($temp_cw);
|
---|
851 | $p -= 2;
|
---|
852 | $tmp = ((1600 * $c1) + (40 * $c2) + 1);
|
---|
853 | $cw[] = ($tmp >> 8);
|
---|
854 | $cw[] = ($tmp % 256);
|
---|
855 | $cw_num += 2;
|
---|
856 | $pos = $epos;
|
---|
857 | $enc = ENC_ASCII;
|
---|
858 | $this->last_enc = $enc;
|
---|
859 | } else {
|
---|
860 | // switch to ASCII encoding
|
---|
861 | if ($enc != ENC_ASCII) {
|
---|
862 | $enc = ENC_ASCII;
|
---|
863 | $this->last_enc = $enc;
|
---|
864 | $cw[] = $this->getSwitchEncodingCodeword($enc);
|
---|
865 | ++$cw_num;
|
---|
866 | $pos = ($epos - $p);
|
---|
867 | }
|
---|
868 | }
|
---|
869 | }
|
---|
870 | break;
|
---|
871 | }
|
---|
872 | case ENC_EDF: { // F. While in EDIFACT (EDF) encodation
|
---|
873 | // initialize temporary array with 0 length
|
---|
874 | $temp_cw = array();
|
---|
875 | $epos = $pos;
|
---|
876 | $field_length = 0;
|
---|
877 | $newenc = $enc;
|
---|
878 | do {
|
---|
879 | // 2. process the next character in EDIFACT encodation.
|
---|
880 | $chr = ord($data[$epos]);
|
---|
881 | if ($this->isCharMode($chr, ENC_EDF)) {
|
---|
882 | ++$epos;
|
---|
883 | $temp_cw[] = $chr;
|
---|
884 | ++$field_length;
|
---|
885 | }
|
---|
886 | if (($field_length == 4) OR ($epos == $data_length) OR !$this->isCharMode($chr, ENC_EDF)) {
|
---|
887 | if (($epos == $data_length) AND ($field_length < 3)) {
|
---|
888 | $enc = ENC_ASCII;
|
---|
889 | $cw[] = $this->getSwitchEncodingCodeword($enc);
|
---|
890 | ++$cw_num;
|
---|
891 | break;
|
---|
892 | }
|
---|
893 | if ($field_length < 4) {
|
---|
894 | // set unlatch character
|
---|
895 | $temp_cw[] = 0x1f;
|
---|
896 | ++$field_length;
|
---|
897 | // fill empty characters
|
---|
898 | for ($i = $field_length; $i < 4; ++$i) {
|
---|
899 | $temp_cw[] = 0;
|
---|
900 | }
|
---|
901 | $enc = ENC_ASCII;
|
---|
902 | $this->last_enc = $enc;
|
---|
903 | }
|
---|
904 | // encodes four data characters in three codewords
|
---|
905 | $tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4);
|
---|
906 | if ($tcw > 0) {
|
---|
907 | $cw[] = $tcw;
|
---|
908 | $cw_num++;
|
---|
909 | }
|
---|
910 | $tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2);
|
---|
911 | if ($tcw > 0) {
|
---|
912 | $cw[] = $tcw;
|
---|
913 | $cw_num++;
|
---|
914 | }
|
---|
915 | $tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F);
|
---|
916 | if ($tcw > 0) {
|
---|
917 | $cw[] = $tcw;
|
---|
918 | $cw_num++;
|
---|
919 | }
|
---|
920 | $temp_cw = array();
|
---|
921 | $pos = $epos;
|
---|
922 | $field_length = 0;
|
---|
923 | if ($enc == ENC_ASCII) {
|
---|
924 | break; // exit from EDIFACT mode
|
---|
925 | }
|
---|
926 | }
|
---|
927 | } while ($epos < $data_length);
|
---|
928 | break;
|
---|
929 | }
|
---|
930 | case ENC_BASE256: { // G. While in Base 256 (B256) encodation
|
---|
931 | // initialize temporary array with 0 length
|
---|
932 | $temp_cw = array();
|
---|
933 | $field_length = 0;
|
---|
934 | while (($pos < $data_length) AND ($field_length <= 1555)) {
|
---|
935 | $newenc = $this->lookAheadTest($data, $pos, $enc);
|
---|
936 | if ($newenc != $enc) {
|
---|
937 | // 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
---|
938 | $enc = $newenc;
|
---|
939 | break; // exit from B256 mode
|
---|
940 | } else {
|
---|
941 | // 2. Otherwise, process the next character in Base 256 encodation.
|
---|
942 | $chr = ord($data[$pos]);
|
---|
943 | ++$pos;
|
---|
944 | $temp_cw[] = $chr;
|
---|
945 | ++$field_length;
|
---|
946 | }
|
---|
947 | }
|
---|
948 | // set field length
|
---|
949 | if ($field_length <= 249) {
|
---|
950 | $cw[] = $this->get255StateCodeword($field_length, ($cw_num + 1));
|
---|
951 | ++$cw_num;
|
---|
952 | } else {
|
---|
953 | $cw[] = $this->get255StateCodeword((floor($field_length / 250) + 249), ($cw_num + 1));
|
---|
954 | $cw[] = $this->get255StateCodeword(($field_length % 250), ($cw_num + 2));
|
---|
955 | $cw_num += 2;
|
---|
956 | }
|
---|
957 | if (!empty($temp_cw)) {
|
---|
958 | // add B256 field
|
---|
959 | foreach ($temp_cw as $p => $cht) {
|
---|
960 | $cw[] = $this->get255StateCodeword($cht, ($cw_num + $p + 1));
|
---|
961 | }
|
---|
962 | }
|
---|
963 | break;
|
---|
964 | }
|
---|
965 | } // end of switch enc
|
---|
966 | } // end of while
|
---|
967 | return $cw;
|
---|
968 | }
|
---|
969 |
|
---|
970 | /**
|
---|
971 | * Places "chr+bit" with appropriate wrapping within array[].
|
---|
972 | * (Annex F - ECC 200 symbol character placement)
|
---|
973 | * @param $marr (array) Array of symbols.
|
---|
974 | * @param $nrow (int) Number of rows.
|
---|
975 | * @param $ncol (int) Number of columns.
|
---|
976 | * @param $row (int) Row number.
|
---|
977 | * @param $col (int) Column number.
|
---|
978 | * @param $chr (int) Char byte.
|
---|
979 | * @param $bit (int) Bit.
|
---|
980 | * @return array
|
---|
981 | * @protected
|
---|
982 | */
|
---|
983 | protected function placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit) {
|
---|
984 | if ($row < 0) {
|
---|
985 | $row += $nrow;
|
---|
986 | $col += (4 - (($nrow + 4) % 8));
|
---|
987 | }
|
---|
988 | if ($col < 0) {
|
---|
989 | $col += $ncol;
|
---|
990 | $row += (4 - (($ncol + 4) % 8));
|
---|
991 | }
|
---|
992 | $marr[(($row * $ncol) + $col)] = ((10 * $chr) + $bit);
|
---|
993 | return $marr;
|
---|
994 | }
|
---|
995 |
|
---|
996 | /**
|
---|
997 | * Places the 8 bits of a utah-shaped symbol character.
|
---|
998 | * (Annex F - ECC 200 symbol character placement)
|
---|
999 | * @param $marr (array) Array of symbols.
|
---|
1000 | * @param $nrow (int) Number of rows.
|
---|
1001 | * @param $ncol (int) Number of columns.
|
---|
1002 | * @param $row (int) Row number.
|
---|
1003 | * @param $col (int) Column number.
|
---|
1004 | * @param $chr (int) Char byte.
|
---|
1005 | * @return array
|
---|
1006 | * @protected
|
---|
1007 | */
|
---|
1008 | protected function placeUtah($marr, $nrow, $ncol, $row, $col, $chr) {
|
---|
1009 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-2, $chr, 1);
|
---|
1010 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-1, $chr, 2);
|
---|
1011 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-2, $chr, 3);
|
---|
1012 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-1, $chr, 4);
|
---|
1013 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col, $chr, 5);
|
---|
1014 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-2, $chr, 6);
|
---|
1015 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-1, $chr, 7);
|
---|
1016 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col, $chr, 8);
|
---|
1017 | return $marr;
|
---|
1018 | }
|
---|
1019 |
|
---|
1020 | /**
|
---|
1021 | * Places the 8 bits of the first special corner case.
|
---|
1022 | * (Annex F - ECC 200 symbol character placement)
|
---|
1023 | * @param $marr (array) Array of symbols.
|
---|
1024 | * @param $nrow (int) Number of rows.
|
---|
1025 | * @param $ncol (int) Number of columns.
|
---|
1026 | * @param $chr (int) Char byte.
|
---|
1027 | * @return array
|
---|
1028 | * @protected
|
---|
1029 | */
|
---|
1030 | protected function placeCornerA($marr, $nrow, $ncol, $chr) {
|
---|
1031 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1);
|
---|
1032 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 1, $chr, 2);
|
---|
1033 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 2, $chr, 3);
|
---|
1034 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
---|
1035 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
---|
1036 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6);
|
---|
1037 | $marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7);
|
---|
1038 | $marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8);
|
---|
1039 | return $marr;
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | /**
|
---|
1043 | * Places the 8 bits of the second special corner case.
|
---|
1044 | * (Annex F - ECC 200 symbol character placement)
|
---|
1045 | * @param $marr (array) Array of symbols.
|
---|
1046 | * @param $nrow (int) Number of rows.
|
---|
1047 | * @param $ncol (int) Number of columns.
|
---|
1048 | * @param $chr (int) Char byte.
|
---|
1049 | * @return array
|
---|
1050 | * @protected
|
---|
1051 | */
|
---|
1052 | protected function placeCornerB($marr, $nrow, $ncol, $chr) {
|
---|
1053 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1);
|
---|
1054 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2);
|
---|
1055 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3);
|
---|
1056 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-4, $chr, 4);
|
---|
1057 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 5);
|
---|
1058 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 6);
|
---|
1059 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 7);
|
---|
1060 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8);
|
---|
1061 | return $marr;
|
---|
1062 | }
|
---|
1063 |
|
---|
1064 | /**
|
---|
1065 | * Places the 8 bits of the third special corner case.
|
---|
1066 | * (Annex F - ECC 200 symbol character placement)
|
---|
1067 | * @param $marr (array) Array of symbols.
|
---|
1068 | * @param $nrow (int) Number of rows.
|
---|
1069 | * @param $ncol (int) Number of columns.
|
---|
1070 | * @param $chr (int) Char byte.
|
---|
1071 | * @return array
|
---|
1072 | * @protected
|
---|
1073 | */
|
---|
1074 | protected function placeCornerC($marr, $nrow, $ncol, $chr) {
|
---|
1075 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1);
|
---|
1076 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2);
|
---|
1077 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3);
|
---|
1078 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
---|
1079 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
---|
1080 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6);
|
---|
1081 | $marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7);
|
---|
1082 | $marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8);
|
---|
1083 | return $marr;
|
---|
1084 | }
|
---|
1085 |
|
---|
1086 | /**
|
---|
1087 | * Places the 8 bits of the fourth special corner case.
|
---|
1088 | * (Annex F - ECC 200 symbol character placement)
|
---|
1089 | * @param $marr (array) Array of symbols.
|
---|
1090 | * @param $nrow (int) Number of rows.
|
---|
1091 | * @param $ncol (int) Number of columns.
|
---|
1092 | * @param $chr (int) Char byte.
|
---|
1093 | * @return array
|
---|
1094 | * @protected
|
---|
1095 | */
|
---|
1096 | protected function placeCornerD($marr, $nrow, $ncol, $chr) {
|
---|
1097 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1);
|
---|
1098 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, $ncol-1, $chr, 2);
|
---|
1099 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 3);
|
---|
1100 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4);
|
---|
1101 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5);
|
---|
1102 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-3, $chr, 6);
|
---|
1103 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-2, $chr, 7);
|
---|
1104 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8);
|
---|
1105 | return $marr;
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 | /**
|
---|
1109 | * Build a placement map.
|
---|
1110 | * (Annex F - ECC 200 symbol character placement)
|
---|
1111 | * @param $nrow (int) Number of rows.
|
---|
1112 | * @param $ncol (int) Number of columns.
|
---|
1113 | * @return array
|
---|
1114 | * @protected
|
---|
1115 | */
|
---|
1116 | protected function getPlacementMap($nrow, $ncol) {
|
---|
1117 | // initialize array with zeros
|
---|
1118 | $marr = array_fill(0, ($nrow * $ncol), 0);
|
---|
1119 | // set starting values
|
---|
1120 | $chr = 1;
|
---|
1121 | $row = 4;
|
---|
1122 | $col = 0;
|
---|
1123 | do {
|
---|
1124 | // repeatedly first check for one of the special corner cases, then
|
---|
1125 | if (($row == $nrow) AND ($col == 0)) {
|
---|
1126 | $marr = $this->placeCornerA($marr, $nrow, $ncol, $chr);
|
---|
1127 | ++$chr;
|
---|
1128 | }
|
---|
1129 | if (($row == ($nrow - 2)) AND ($col == 0) AND ($ncol % 4)) {
|
---|
1130 | $marr = $this->placeCornerB($marr, $nrow, $ncol, $chr);
|
---|
1131 | ++$chr;
|
---|
1132 | }
|
---|
1133 | if (($row == ($nrow - 2)) AND ($col == 0) AND (($ncol % 8) == 4)) {
|
---|
1134 | $marr = $this->placeCornerC($marr, $nrow, $ncol, $chr);
|
---|
1135 | ++$chr;
|
---|
1136 | }
|
---|
1137 | if (($row == ($nrow + 4)) AND ($col == 2) AND (!($ncol % 8))) {
|
---|
1138 | $marr = $this->placeCornerD($marr, $nrow, $ncol, $chr);
|
---|
1139 | ++$chr;
|
---|
1140 | }
|
---|
1141 | // sweep upward diagonally, inserting successive characters,
|
---|
1142 | do {
|
---|
1143 | if (($row < $nrow) AND ($col >= 0) AND (!$marr[(($row * $ncol) + $col)])) {
|
---|
1144 | $marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr);
|
---|
1145 | ++$chr;
|
---|
1146 | }
|
---|
1147 | $row -= 2;
|
---|
1148 | $col += 2;
|
---|
1149 | } while (($row >= 0) AND ($col < $ncol));
|
---|
1150 | ++$row;
|
---|
1151 | $col += 3;
|
---|
1152 | // & then sweep downward diagonally, inserting successive characters,...
|
---|
1153 | do {
|
---|
1154 | if (($row >= 0) AND ($col < $ncol) AND (!$marr[(($row * $ncol) + $col)])) {
|
---|
1155 | $marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr);
|
---|
1156 | ++$chr;
|
---|
1157 | }
|
---|
1158 | $row += 2;
|
---|
1159 | $col -= 2;
|
---|
1160 | } while (($row < $nrow) AND ($col >= 0));
|
---|
1161 | $row += 3;
|
---|
1162 | ++$col;
|
---|
1163 | // ... until the entire array is scanned
|
---|
1164 | } while (($row < $nrow) OR ($col < $ncol));
|
---|
1165 | // lastly, if the lower righthand corner is untouched, fill in fixed pattern
|
---|
1166 | if (!$marr[(($nrow * $ncol) - 1)]) {
|
---|
1167 | $marr[(($nrow * $ncol) - 1)] = 1;
|
---|
1168 | $marr[(($nrow * $ncol) - $ncol - 2)] = 1;
|
---|
1169 | }
|
---|
1170 | return $marr;
|
---|
1171 | }
|
---|
1172 |
|
---|
1173 | } // end DataMatrix class
|
---|
1174 | //============================================================+
|
---|
1175 | // END OF FILE
|
---|
1176 | //============================================================+
|
---|