root / drupal7 / sites / all / libraries / tcpdf-version / include / barcodes / datamatrix.php @ 5a7e6170
1 | 85ad3d82 | Assos Assos | <?php
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2 | //============================================================+
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3 | // File name : datamatrix.php
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4 | // Version : 1.0.004
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5 | // Begin : 2010-06-07
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6 | // Last Update : 2013-02-04
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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) 2010-2012 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 | |||
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 1.0.004
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44 | */
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45 | |||
46 | // custom definitions
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47 | if (!defined('DATAMATRIXDEFS')) { |
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48 | |||
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 | |||
54 | // -----------------------------------------------------
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55 | |||
56 | } // end of custom definitions
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57 | |||
58 | // #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
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59 | |||
60 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
227 | // -----------------------------------------------------------------------------
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228 | |||
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
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245 | if ($nd > 1558) { |
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246 | return false; |
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247 | } |
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248 | // get minimum required matrix size.
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249 | foreach ($this->symbattr as $params) { |
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250 | if ($params[11] >= $nd) { |
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251 | break;
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252 | } |
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253 | } |
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254 | if ($params[11] < $nd) { |
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255 | // too much data
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256 | return false; |
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257 | } elseif ($params[11] > $nd) { |
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258 | // add padding
|
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259 | if ($this->last_enc == ENC_EDF) { |
||
260 | // switch to ASCII encoding
|
||
261 | $cw[] = 124; |
||
262 | ++$nd;
|
||
263 | } elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) { |
||
264 | // switch to ASCII encoding
|
||
265 | $cw[] = 254; |
||
266 | ++$nd;
|
||
267 | } |
||
268 | if ($params[11] > $nd) { |
||
269 | // add first pad
|
||
270 | $cw[] = 129; |
||
271 | ++$nd;
|
||
272 | // add remaining pads
|
||
273 | for ($i = $nd; $i < $params[11]; ++$i) { |
||
274 | $cw[] = $this->get253StateCodeword(129, $i); |
||
275 | } |
||
276 | } |
||
277 | } |
||
278 | // add error correction codewords
|
||
279 | $cw = $this->getErrorCorrection($cw, $params[13], $params[14], $params[15]); |
||
280 | // initialize empty arrays
|
||
281 | $grid = array_fill(0, ($params[2] * $params[3]), 0); |
||
282 | // get placement map
|
||
283 | $places = $this->getPlacementMap($params[2], $params[3]); |
||
284 | // fill the grid with data
|
||
285 | $grid = array(); |
||
286 | $i = 0; |
||
287 | // region data row max index
|
||
288 | $rdri = ($params[4] - 1); |
||
289 | // region data column max index
|
||
290 | $rdci = ($params[5] - 1); |
||
291 | // for each vertical region
|
||
292 | for ($vr = 0; $vr < $params[9]; ++$vr) { |
||
293 | // for each row on region
|
||
294 | for ($r = 0; $r < $params[4]; ++$r) { |
||
295 | // get row
|
||
296 | $row = (($vr * $params[4]) + $r); |
||
297 | // for each horizontal region
|
||
298 | for ($hr = 0; $hr < $params[8]; ++$hr) { |
||
299 | // for each column on region
|
||
300 | for ($c = 0; $c < $params[5]; ++$c) { |
||
301 | // get column
|
||
302 | $col = (($hr * $params[5]) + $c); |
||
303 | // braw bits by case
|
||
304 | if ($r == 0) { |
||
305 | // top finder pattern
|
||
306 | if ($c % 2) { |
||
307 | $grid[$row][$col] = 0; |
||
308 | } else {
|
||
309 | $grid[$row][$col] = 1; |
||
310 | } |
||
311 | } elseif ($r == $rdri) { |
||
312 | // bottom finder pattern
|
||
313 | $grid[$row][$col] = 1; |
||
314 | } elseif ($c == 0) { |
||
315 | // left finder pattern
|
||
316 | $grid[$row][$col] = 1; |
||
317 | } elseif ($c == $rdci) { |
||
318 | // right finder pattern
|
||
319 | if ($r % 2) { |
||
320 | $grid[$row][$col] = 1; |
||
321 | } else {
|
||
322 | $grid[$row][$col] = 0; |
||
323 | } |
||
324 | } else { // data bit |
||
325 | if ($places[$i] < 2) { |
||
326 | $grid[$row][$col] = $places[$i]; |
||
327 | } else {
|
||
328 | // codeword ID
|
||
329 | $cw_id = (floor($places[$i] / 10) - 1); |
||
330 | // codeword BIT mask
|
||
331 | $cw_bit = pow(2, (8 - ($places[$i] % 10))); |
||
332 | $grid[$row][$col] = (($cw[$cw_id] & $cw_bit) == 0) ? 0 : 1; |
||
333 | } |
||
334 | ++$i;
|
||
335 | } |
||
336 | } |
||
337 | } |
||
338 | } |
||
339 | } |
||
340 | $this->barcode_array['num_rows'] = $params[0]; |
||
341 | $this->barcode_array['num_cols'] = $params[1]; |
||
342 | $this->barcode_array['bcode'] = $grid; |
||
343 | } |
||
344 | |||
345 | /**
|
||
346 | * Returns a barcode array which is readable by TCPDF
|
||
347 | * @return array barcode array readable by TCPDF;
|
||
348 | * @public
|
||
349 | */
|
||
350 | public function getBarcodeArray() { |
||
351 | return $this->barcode_array; |
||
352 | } |
||
353 | |||
354 | /**
|
||
355 | * Product of two numbers in a Power-of-Two Galois Field
|
||
356 | * @param $a (int) first number to multiply.
|
||
357 | * @param $b (int) second number to multiply.
|
||
358 | * @param $log (array) Log table.
|
||
359 | * @param $alog (array) Anti-Log table.
|
||
360 | * @param $gf (array) Number of Factors of the Reed-Solomon polynomial.
|
||
361 | * @return int product
|
||
362 | * @protected
|
||
363 | */
|
||
364 | protected function getGFProduct($a, $b, $log, $alog, $gf) { |
||
365 | if (($a == 0) OR ($b == 0)) { |
||
366 | return 0; |
||
367 | } |
||
368 | return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]); |
||
369 | } |
||
370 | |||
371 | /**
|
||
372 | * Add error correction codewords to data codewords array (ANNEX E).
|
||
373 | * @param $wd (array) Array of datacodewords.
|
||
374 | * @param $nb (int) Number of blocks.
|
||
375 | * @param $nd (int) Number of data codewords per block.
|
||
376 | * @param $nc (int) Number of correction codewords per block.
|
||
377 | * @param $gf (int) numner of fields on log/antilog table (power of 2).
|
||
378 | * @param $pp (int) The value of its prime modulus polynomial (301 for ECC200).
|
||
379 | * @return array data codewords + error codewords
|
||
380 | * @protected
|
||
381 | */
|
||
382 | protected function getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301) { |
||
383 | // generate the log ($log) and antilog ($alog) tables
|
||
384 | $log[0] = 0; |
||
385 | $alog[0] = 1; |
||
386 | for ($i = 1; $i < $gf; ++$i) { |
||
387 | $alog[$i] = ($alog[($i - 1)] * 2); |
||
388 | if ($alog[$i] >= $gf) { |
||
389 | $alog[$i] ^= $pp; |
||
390 | } |
||
391 | $log[$alog[$i]] = $i; |
||
392 | } |
||
393 | ksort($log); |
||
394 | // generate the polynomial coefficients (c)
|
||
395 | $c = array_fill(0, ($nc + 1), 0); |
||
396 | $c[0] = 1; |
||
397 | for ($i = 1; $i <= $nc; ++$i) { |
||
398 | $c[$i] = $c[($i-1)]; |
||
399 | for ($j = ($i - 1); $j >= 1; --$j) { |
||
400 | $c[$j] = $c[($j - 1)] ^ $this->getGFProduct($c[$j], $alog[$i], $log, $alog, $gf); |
||
401 | } |
||
402 | $c[0] = $this->getGFProduct($c[0], $alog[$i], $log, $alog, $gf); |
||
403 | } |
||
404 | ksort($c); |
||
405 | // total number of data codewords
|
||
406 | $num_wd = ($nb * $nd); |
||
407 | // total number of error codewords
|
||
408 | $num_we = ($nb * $nc); |
||
409 | // for each block
|
||
410 | for ($b = 0; $b < $nb; ++$b) { |
||
411 | // create interleaved data block
|
||
412 | $block = array(); |
||
413 | for ($n = $b; $n < $num_wd; $n += $nb) { |
||
414 | $block[] = $wd[$n]; |
||
415 | } |
||
416 | // initialize error codewords
|
||
417 | $we = array_fill(0, ($nc + 1), 0); |
||
418 | // calculate error correction codewords for this block
|
||
419 | for ($i = 0; $i < $nd; ++$i) { |
||
420 | $k = ($we[0] ^ $block[$i]); |
||
421 | for ($j = 0; $j < $nc; ++$j) { |
||
422 | $we[$j] = ($we[($j + 1)] ^ $this->getGFProduct($k, $c[($nc - $j - 1)], $log, $alog, $gf)); |
||
423 | } |
||
424 | } |
||
425 | // add error codewords at the end of data codewords
|
||
426 | $j = 0; |
||
427 | for ($i = $b; $i < $num_we; $i += $nb) { |
||
428 | $wd[($num_wd + $i)] = $we[$j]; |
||
429 | ++$j;
|
||
430 | } |
||
431 | } |
||
432 | // reorder codewords
|
||
433 | ksort($wd); |
||
434 | return $wd; |
||
435 | } |
||
436 | |||
437 | /**
|
||
438 | * Return the 253-state codeword
|
||
439 | * @param $cwpad (int) Pad codeword.
|
||
440 | * @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
||
441 | * @return pad codeword
|
||
442 | * @protected
|
||
443 | */
|
||
444 | protected function get253StateCodeword($cwpad, $cwpos) { |
||
445 | $pad = ($cwpad + (((149 * $cwpos) % 253) + 1)); |
||
446 | if ($pad > 254) { |
||
447 | $pad -= 254; |
||
448 | } |
||
449 | return $pad; |
||
450 | } |
||
451 | |||
452 | /**
|
||
453 | * Return the 255-state codeword
|
||
454 | * @param $cwpad (int) Pad codeword.
|
||
455 | * @param $cwpos (int) Number of data codewords from the beginning of encoded data.
|
||
456 | * @return pad codeword
|
||
457 | * @protected
|
||
458 | */
|
||
459 | protected function get255StateCodeword($cwpad, $cwpos) { |
||
460 | $pad = ($cwpad + (((149 * $cwpos) % 255) + 1)); |
||
461 | if ($pad > 255) { |
||
462 | $pad -= 256; |
||
463 | } |
||
464 | return $pad; |
||
465 | } |
||
466 | |||
467 | /**
|
||
468 | * Returns true if the char belongs to the selected mode
|
||
469 | * @param $chr (int) Character (byte) to check.
|
||
470 | * @param $mode (int) Current encoding mode.
|
||
471 | * @return boolean true if the char is of the selected mode.
|
||
472 | * @protected
|
||
473 | */
|
||
474 | protected function isCharMode($chr, $mode) { |
||
475 | $status = false; |
||
476 | switch ($mode) { |
||
477 | case ENC_ASCII: { // ASCII character 0 to 127 |
||
478 | $status = (($chr >= 0) AND ($chr <= 127)); |
||
479 | break;
|
||
480 | } |
||
481 | case ENC_C40: { // Upper-case alphanumeric |
||
482 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 65) AND ($chr <= 90))); |
||
483 | break;
|
||
484 | } |
||
485 | case ENC_TXT: { // Lower-case alphanumeric |
||
486 | $status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 97) AND ($chr <= 122))); |
||
487 | break;
|
||
488 | } |
||
489 | case ENC_X12: { // ANSI X12 |
||
490 | $status = (($chr == 13) OR ($chr == 42) OR ($chr == 62)); |
||
491 | break;
|
||
492 | } |
||
493 | case ENC_EDF: { // ASCII character 32 to 94 |
||
494 | $status = (($chr >= 32) AND ($chr <= 94)); |
||
495 | break;
|
||
496 | } |
||
497 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
||
498 | $status = (($chr == 232) OR ($chr == 233) OR ($chr == 234) OR ($chr == 241)); |
||
499 | break;
|
||
500 | } |
||
501 | case ENC_ASCII_EXT: { // ASCII character 128 to 255 |
||
502 | $status = (($chr >= 128) AND ($chr <= 255)); |
||
503 | break;
|
||
504 | } |
||
505 | case ENC_ASCII_NUM: { // ASCII digits |
||
506 | $status = (($chr >= 48) AND ($chr <= 57)); |
||
507 | break;
|
||
508 | } |
||
509 | } |
||
510 | return $status; |
||
511 | } |
||
512 | |||
513 | /**
|
||
514 | * The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S).
|
||
515 | * @param $data (string) data to encode
|
||
516 | * @param $pos (int) current position
|
||
517 | * @param $mode (int) current encoding mode
|
||
518 | * @return int encoding mode
|
||
519 | * @protected
|
||
520 | */
|
||
521 | protected function lookAheadTest($data, $pos, $mode) { |
||
522 | $data_length = strlen($data); |
||
523 | if ($pos >= $data_length) { |
||
524 | return $mode; |
||
525 | } |
||
526 | $charscount = 0; // count processed chars |
||
527 | // STEP J
|
||
528 | if ($mode == ENC_ASCII) { |
||
529 | $numch = array(0, 1, 1, 1, 1, 1.25); |
||
530 | } else {
|
||
531 | $numch = array(1, 2, 2, 2, 2, 2.25); |
||
532 | $numch[$mode] = 0; |
||
533 | } |
||
534 | while (true) { |
||
535 | // STEP K
|
||
536 | if (($pos + $charscount) == $data_length) { |
||
537 | if ($numch[ENC_ASCII] <= ceil(min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
538 | return ENC_ASCII; |
||
539 | } |
||
540 | if ($numch[ENC_BASE256] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
||
541 | return ENC_BASE256; |
||
542 | } |
||
543 | if ($numch[ENC_EDF] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256]))) { |
||
544 | return ENC_EDF; |
||
545 | } |
||
546 | if ($numch[ENC_TXT] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
547 | return ENC_TXT; |
||
548 | } |
||
549 | if ($numch[ENC_X12] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
||
550 | return ENC_X12; |
||
551 | } |
||
552 | return ENC_C40; |
||
553 | } |
||
554 | // get char
|
||
555 | $chr = ord($data[$pos + $charscount]); |
||
556 | $charscount++;
|
||
557 | // STEP L
|
||
558 | if ($this->isCharMode($chr, ENC_ASCII_NUM)) { |
||
559 | $numch[ENC_ASCII] += (1 / 2); |
||
560 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
561 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
||
562 | $numch[ENC_ASCII] += 2; |
||
563 | } else {
|
||
564 | $numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
||
565 | $numch[ENC_ASCII] += 1; |
||
566 | } |
||
567 | // STEP M
|
||
568 | if ($this->isCharMode($chr, ENC_C40)) { |
||
569 | $numch[ENC_C40] += (2 / 3); |
||
570 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
571 | $numch[ENC_C40] += (8 / 3); |
||
572 | } else {
|
||
573 | $numch[ENC_C40] += (4 / 3); |
||
574 | } |
||
575 | // STEP N
|
||
576 | if ($this->isCharMode($chr, ENC_TXT)) { |
||
577 | $numch[ENC_TXT] += (2 / 3); |
||
578 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
579 | $numch[ENC_TXT] += (8 / 3); |
||
580 | } else {
|
||
581 | $numch[ENC_TXT] += (4 / 3); |
||
582 | } |
||
583 | // STEP O
|
||
584 | if ($this->isCharMode($chr, ENC_X12) OR $this->isCharMode($chr, ENC_C40)) { |
||
585 | $numch[ENC_X12] += (2 / 3); |
||
586 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
587 | $numch[ENC_X12] += (13 / 3); |
||
588 | } else {
|
||
589 | $numch[ENC_X12] += (10 / 3); |
||
590 | } |
||
591 | // STEP P
|
||
592 | if ($this->isCharMode($chr, ENC_EDF)) { |
||
593 | $numch[ENC_EDF] += (3 / 4); |
||
594 | } elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
595 | $numch[ENC_EDF] += (17 / 4); |
||
596 | } else {
|
||
597 | $numch[ENC_EDF] += (13 / 4); |
||
598 | } |
||
599 | // STEP Q
|
||
600 | if ($this->isCharMode($chr, ENC_BASE256)) { |
||
601 | $numch[ENC_BASE256] += 4; |
||
602 | } else {
|
||
603 | $numch[ENC_BASE256] += 1; |
||
604 | } |
||
605 | // STEP R
|
||
606 | if ($charscount >= 4) { |
||
607 | if (($numch[ENC_ASCII] + 1) <= min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
608 | return ENC_ASCII; |
||
609 | } |
||
610 | if ((($numch[ENC_BASE256] + 1) <= $numch[ENC_ASCII]) |
||
611 | OR (($numch[ENC_BASE256] + 1) < min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
||
612 | return ENC_BASE256; |
||
613 | } |
||
614 | if (($numch[ENC_EDF] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256])) { |
||
615 | return ENC_EDF; |
||
616 | } |
||
617 | if (($numch[ENC_TXT] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
618 | return ENC_TXT; |
||
619 | } |
||
620 | if (($numch[ENC_X12] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
621 | return ENC_X12; |
||
622 | } |
||
623 | if (($numch[ENC_C40] + 1) < min($numch[ENC_ASCII], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
||
624 | if ($numch[ENC_C40] < $numch[ENC_X12]) { |
||
625 | return ENC_C40; |
||
626 | } |
||
627 | if ($numch[ENC_C40] == $numch[ENC_X12]) { |
||
628 | $k = ($pos + $charscount + 1); |
||
629 | while ($k < $data_length) { |
||
630 | $tmpchr = ord($data{$k}); |
||
631 | if ($this->isCharMode($tmpchr, ENC_X12)) { |
||
632 | return ENC_X12; |
||
633 | } elseif (!($this->isCharMode($tmpchr, ENC_X12) OR $this->isCharMode($tmpchr, ENC_C40))) { |
||
634 | break;
|
||
635 | } |
||
636 | ++$k;
|
||
637 | } |
||
638 | return ENC_C40; |
||
639 | } |
||
640 | } |
||
641 | } |
||
642 | } // end of while
|
||
643 | } |
||
644 | |||
645 | /**
|
||
646 | * Get the switching codeword to a new encoding mode (latch codeword)
|
||
647 | * @param $mode (int) New encoding mode.
|
||
648 | * @return (int) Switch codeword.
|
||
649 | * @protected
|
||
650 | */
|
||
651 | protected function getSwitchEncodingCodeword($mode) { |
||
652 | switch ($mode) { |
||
653 | case ENC_ASCII: { // ASCII character 0 to 127 |
||
654 | $cw = 254; |
||
655 | break;
|
||
656 | } |
||
657 | case ENC_C40: { // Upper-case alphanumeric |
||
658 | $cw = 230; |
||
659 | break;
|
||
660 | } |
||
661 | case ENC_TXT: { // Lower-case alphanumeric |
||
662 | $cw = 239; |
||
663 | break;
|
||
664 | } |
||
665 | case ENC_X12: { // ANSI X12 |
||
666 | $cw = 238; |
||
667 | break;
|
||
668 | } |
||
669 | case ENC_EDF: { // ASCII character 32 to 94 |
||
670 | $cw = 240; |
||
671 | break;
|
||
672 | } |
||
673 | case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
||
674 | $cw = 231; |
||
675 | break;
|
||
676 | } |
||
677 | } |
||
678 | return $cw; |
||
679 | } |
||
680 | |||
681 | /**
|
||
682 | * Choose the minimum matrix size and return the max number of data codewords.
|
||
683 | * @param $numcw (int) Number of current codewords.
|
||
684 | * @return number of data codewords in matrix
|
||
685 | * @protected
|
||
686 | */
|
||
687 | protected function getMaxDataCodewords($numcw) { |
||
688 | foreach ($this->symbattr as $key => $matrix) { |
||
689 | if ($matrix[11] >= $numcw) { |
||
690 | return $matrix[11]; |
||
691 | } |
||
692 | } |
||
693 | return 0; |
||
694 | } |
||
695 | |||
696 | /**
|
||
697 | * Get high level encoding using the minimum symbol data characters for ECC 200
|
||
698 | * @param $data (string) data to encode
|
||
699 | * @return array of codewords
|
||
700 | * @protected
|
||
701 | */
|
||
702 | protected function getHighLevelEncoding($data) { |
||
703 | // STEP A. Start in ASCII encodation.
|
||
704 | $enc = ENC_ASCII; // current encoding mode |
||
705 | $pos = 0; // current position |
||
706 | $cw = array(); // array of codewords to be returned |
||
707 | $cw_num = 0; // number of data codewords |
||
708 | $data_lenght = strlen($data); // number of chars |
||
709 | while ($pos < $data_lenght) { |
||
710 | switch ($enc) { |
||
711 | case ENC_ASCII: { // STEP B. While in ASCII encodation |
||
712 | if (($data_lenght > 1) AND ($pos < ($data_lenght - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) { |
||
713 | // 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode.
|
||
714 | $cw[] = (intval(substr($data, $pos, 2)) + 130); |
||
715 | ++$cw_num;
|
||
716 | $pos += 2; |
||
717 | } else {
|
||
718 | // 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
||
719 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
720 | if ($newenc != $enc) { |
||
721 | // switch to new encoding
|
||
722 | $enc = $newenc; |
||
723 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
724 | ++$cw_num;
|
||
725 | } else {
|
||
726 | // get new byte
|
||
727 | $chr = ord($data[$pos]); |
||
728 | ++$pos;
|
||
729 | if ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
||
730 | // 3. If the next data character is extended ASCII (greater than 127) encode it in ASCII mode first using the Upper Shift (value 235) character.
|
||
731 | $cw[] = 235; |
||
732 | $cw[] = ($chr - 127); |
||
733 | $cw_num += 2; |
||
734 | } else {
|
||
735 | // 4. Otherwise process the next data character in ASCII encodation.
|
||
736 | $cw[] = ($chr + 1); |
||
737 | ++$cw_num;
|
||
738 | } |
||
739 | } |
||
740 | } |
||
741 | break;
|
||
742 | } |
||
743 | case ENC_C40 : // Upper-case alphanumeric |
||
744 | case ENC_TXT : // Lower-case alphanumeric |
||
745 | case ENC_X12 : { // ANSI X12 |
||
746 | $temp_cw = array(); |
||
747 | $p = 0; |
||
748 | $epos = $pos; |
||
749 | // get charset ID
|
||
750 | $set_id = $this->chset_id[$enc]; |
||
751 | // get basic charset for current encoding
|
||
752 | $charset = $this->chset[$set_id]; |
||
753 | do {
|
||
754 | // 2. process the next character in C40 encodation.
|
||
755 | $chr = ord($data[$epos]); |
||
756 | ++$epos;
|
||
757 | // check for extended character
|
||
758 | if ($chr & 0x80) { |
||
759 | if ($enc == ENC_X12) { |
||
760 | return false; |
||
761 | } |
||
762 | $chr = ($chr & 0x7f); |
||
763 | $temp_cw[] = 1; // shift 2 |
||
764 | $temp_cw[] = 30; // upper shift |
||
765 | $p += 2; |
||
766 | } |
||
767 | if (isset($charset[$chr])) { |
||
768 | $temp_cw[] = $charset[$chr]; |
||
769 | ++$p;
|
||
770 | } else {
|
||
771 | if (isset($this->chset['SH1'][$chr])) { |
||
772 | $temp_cw[] = 0; // shift 1 |
||
773 | $shiftset = $this->chset['SH1']; |
||
774 | } elseif (isset($chr, $this->chset['SH2'][$chr])) { |
||
775 | $temp_cw[] = 1; // shift 2 |
||
776 | $shiftset = $this->chset['SH2']; |
||
777 | } elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) { |
||
778 | $temp_cw[] = 2; // shift 3 |
||
779 | $shiftset = $this->chset['S3C']; |
||
780 | } elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) { |
||
781 | $temp_cw[] = 2; // shift 3 |
||
782 | $shiftset = $this->chset['S3T']; |
||
783 | } else {
|
||
784 | return false; |
||
785 | } |
||
786 | $temp_cw[] = $shiftset[$chr]; |
||
787 | $p += 2; |
||
788 | } |
||
789 | if ($p >= 3) { |
||
790 | $c1 = array_shift($temp_cw); |
||
791 | $c2 = array_shift($temp_cw); |
||
792 | $c3 = array_shift($temp_cw); |
||
793 | $p -= 3; |
||
794 | $tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1); |
||
795 | $cw[] = ($tmp >> 8); |
||
796 | $cw[] = ($tmp % 256); |
||
797 | $cw_num += 2; |
||
798 | $pos = $epos; |
||
799 | // 1. If the C40 encoding is at the point of starting a new double symbol character and if the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
||
800 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
801 | if ($newenc != $enc) { |
||
802 | $enc = $newenc; |
||
803 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
804 | ++$cw_num;
|
||
805 | $pos -= $p; |
||
806 | $p = 0; |
||
807 | break;
|
||
808 | } |
||
809 | } |
||
810 | } while (($p > 0) AND ($epos < $data_lenght)); |
||
811 | // process last data (if any)
|
||
812 | if ($p > 0) { |
||
813 | // get remaining number of data symbols
|
||
814 | $cwr = ($this->getMaxDataCodewords($cw_num + 2) - $cw_num); |
||
815 | if (($cwr == 1) AND ($p == 1)) { |
||
816 | // d. If one symbol character remains and one C40 value (data character) remains to be encoded
|
||
817 | $c1 = array_shift($temp_cw); |
||
818 | --$p;
|
||
819 | $cw[] = ($c1 + 1); |
||
820 | ++$cw_num;
|
||
821 | } elseif (($cwr == 2) AND ($p == 1)) { |
||
822 | // c. If two symbol characters remain and only one C40 value (data character) remains to be encoded
|
||
823 | $c1 = array_shift($temp_cw); |
||
824 | --$p;
|
||
825 | $cw[] = 254; |
||
826 | $cw[] = ($c1 + 1); |
||
827 | $cw_num += 2; |
||
828 | } elseif (($cwr == 2) AND ($p == 2)) { |
||
829 | // b. If two symbol characters remain and two C40 values remain to be encoded
|
||
830 | $c1 = array_shift($temp_cw); |
||
831 | $c2 = array_shift($temp_cw); |
||
832 | $p -= 2; |
||
833 | $tmp = ((1600 * $c1) + (40 * $c2) + 1); |
||
834 | $cw[] = ($tmp >> 8); |
||
835 | $cw[] = ($tmp % 256); |
||
836 | $cw_num += 2; |
||
837 | } else {
|
||
838 | // switch to ASCII encoding
|
||
839 | if ($enc != ENC_ASCII) { |
||
840 | $enc = ENC_ASCII; |
||
841 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
842 | ++$cw_num;
|
||
843 | } |
||
844 | } |
||
845 | } |
||
846 | break;
|
||
847 | } |
||
848 | case ENC_EDF: { // F. While in EDIFACT (EDF) encodation |
||
849 | // initialize temporary array with 0 lenght
|
||
850 | $temp_cw = array(); |
||
851 | $epos = $pos; |
||
852 | $field_lenght = 0; |
||
853 | $newenc = $enc; |
||
854 | do {
|
||
855 | // 2. process the next character in EDIFACT encodation.
|
||
856 | $chr = ord($data[$epos]); |
||
857 | if ($this->isCharMode($chr, ENC_EDF)) { |
||
858 | ++$epos;
|
||
859 | $temp_cw[] = $chr; |
||
860 | ++$field_lenght;
|
||
861 | } |
||
862 | if (($field_lenght == 4) OR ($epos == $data_lenght) OR !$this->isCharMode($chr, ENC_EDF)) { |
||
863 | if ($field_lenght < 4) { |
||
864 | // set unlatch character
|
||
865 | $temp_cw[] = 0x1f; |
||
866 | ++$field_lenght;
|
||
867 | // fill empty characters
|
||
868 | for ($i = $field_lenght; $i < 4; ++$i) { |
||
869 | $temp_cw[] = 0; |
||
870 | } |
||
871 | $enc = ENC_ASCII; |
||
872 | } |
||
873 | // encodes four data characters in three codewords
|
||
874 | $tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4); |
||
875 | if ($tcw > 0) { |
||
876 | $cw[] = $tcw; |
||
877 | $cw_num++;
|
||
878 | } |
||
879 | $tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2); |
||
880 | if ($tcw > 0) { |
||
881 | $cw[] = $tcw; |
||
882 | $cw_num++;
|
||
883 | } |
||
884 | $tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F); |
||
885 | if ($tcw > 0) { |
||
886 | $cw[] = $tcw; |
||
887 | $cw_num++;
|
||
888 | } |
||
889 | $temp_cw = array(); |
||
890 | $pos = $epos; |
||
891 | $field_lenght = 0; |
||
892 | if ($enc == ENC_ASCII) { |
||
893 | break; // exit from EDIFACT mode |
||
894 | } |
||
895 | } |
||
896 | } while ($epos < $data_lenght); |
||
897 | break;
|
||
898 | } |
||
899 | case ENC_BASE256: { // G. While in Base 256 (B256) encodation |
||
900 | // initialize temporary array with 0 lenght
|
||
901 | $temp_cw = array(); |
||
902 | $field_lenght = 0; |
||
903 | while (($pos < $data_lenght) AND ($field_lenght <= 1555)) { |
||
904 | $newenc = $this->lookAheadTest($data, $pos, $enc); |
||
905 | if ($newenc != $enc) { |
||
906 | // 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
|
||
907 | $enc = $newenc; |
||
908 | $cw[] = $this->getSwitchEncodingCodeword($enc); |
||
909 | ++$cw_num;
|
||
910 | break; // exit from B256 mode |
||
911 | } else {
|
||
912 | // 2. Otherwise, process the next character in Base 256 encodation.
|
||
913 | $chr = ord($data[$pos]); |
||
914 | ++$pos;
|
||
915 | $temp_cw[] = $chr; |
||
916 | ++$field_lenght;
|
||
917 | } |
||
918 | } |
||
919 | // set field lenght
|
||
920 | if ($field_lenght <= 249) { |
||
921 | $cw[] = $field_lenght; |
||
922 | ++$cw_num;
|
||
923 | } else {
|
||
924 | $cw[] = (floor($field_lenght / 250) + 249); |
||
925 | $cw[] = ($field_lenght % 250); |
||
926 | $cw_num += 2; |
||
927 | } |
||
928 | if (!empty($temp_cw)) { |
||
929 | // add B256 field
|
||
930 | foreach ($temp_cw as $p => $cht) { |
||
931 | $cw[] = $this->get255StateCodeword($chr, ($cw_num + $p)); |
||
932 | } |
||
933 | } |
||
934 | break;
|
||
935 | } |
||
936 | } // end of switch enc
|
||
937 | } // end of while
|
||
938 | // set last used encoding
|
||
939 | $this->last_enc = $enc; |
||
940 | return $cw; |
||
941 | } |
||
942 | |||
943 | /**
|
||
944 | * Places "chr+bit" with appropriate wrapping within array[].
|
||
945 | * (Annex F - ECC 200 symbol character placement)
|
||
946 | * @param $marr (array) Array of symbols.
|
||
947 | * @param $nrow (int) Number of rows.
|
||
948 | * @param $ncol (int) Number of columns.
|
||
949 | * @param $row (int) Row number.
|
||
950 | * @param $col (int) Column number.
|
||
951 | * @param $chr (int) Char byte.
|
||
952 | * @param $bit (int) Bit.
|
||
953 | * @return array
|
||
954 | * @protected
|
||
955 | */
|
||
956 | protected function placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit) { |
||
957 | if ($row < 0) { |
||
958 | $row += $nrow; |
||
959 | $col += (4 - (($nrow + 4) % 8)); |
||
960 | } |
||
961 | if ($col < 0) { |
||
962 | $col += $ncol; |
||
963 | $row += (4 - (($ncol + 4) % 8)); |
||
964 | } |
||
965 | $marr[(($row * $ncol) + $col)] = ((10 * $chr) + $bit); |
||
966 | return $marr; |
||
967 | } |
||
968 | |||
969 | /**
|
||
970 | * Places the 8 bits of a utah-shaped symbol character.
|
||
971 | * (Annex F - ECC 200 symbol character placement)
|
||
972 | * @param $marr (array) Array of symbols.
|
||
973 | * @param $nrow (int) Number of rows.
|
||
974 | * @param $ncol (int) Number of columns.
|
||
975 | * @param $row (int) Row number.
|
||
976 | * @param $col (int) Column number.
|
||
977 | * @param $chr (int) Char byte.
|
||
978 | * @return array
|
||
979 | * @protected
|
||
980 | */
|
||
981 | protected function placeUtah($marr, $nrow, $ncol, $row, $col, $chr) { |
||
982 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-2, $chr, 1); |
||
983 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-1, $chr, 2); |
||
984 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-2, $chr, 3); |
||
985 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-1, $chr, 4); |
||
986 | $marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col, $chr, 5); |
||
987 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-2, $chr, 6); |
||
988 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-1, $chr, 7); |
||
989 | $marr = $this->placeModule($marr, $nrow, $ncol, $row, $col, $chr, 8); |
||
990 | return $marr; |
||
991 | } |
||
992 | |||
993 | /**
|
||
994 | * Places the 8 bits of the first special corner case.
|
||
995 | * (Annex F - ECC 200 symbol character placement)
|
||
996 | * @param $marr (array) Array of symbols.
|
||
997 | * @param $nrow (int) Number of rows.
|
||
998 | * @param $ncol (int) Number of columns.
|
||
999 | * @param $chr (int) Char byte.
|
||
1000 | * @return array
|
||
1001 | * @protected
|
||
1002 | */
|
||
1003 | protected function placeCornerA($marr, $nrow, $ncol, $chr) { |
||
1004 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1); |
||
1005 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 1, $chr, 2); |
||
1006 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 2, $chr, 3); |
||
1007 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
||
1008 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
||
1009 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6); |
||
1010 | $marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7); |
||
1011 | $marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8); |
||
1012 | return $marr; |
||
1013 | } |
||
1014 | |||
1015 | /**
|
||
1016 | * Places the 8 bits of the second special corner case.
|
||
1017 | * (Annex F - ECC 200 symbol character placement)
|
||
1018 | * @param $marr (array) Array of symbols.
|
||
1019 | * @param $nrow (int) Number of rows.
|
||
1020 | * @param $ncol (int) Number of columns.
|
||
1021 | * @param $chr (int) Char byte.
|
||
1022 | * @return array
|
||
1023 | * @protected
|
||
1024 | */
|
||
1025 | protected function placeCornerB($marr, $nrow, $ncol, $chr) { |
||
1026 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1); |
||
1027 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2); |
||
1028 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3); |
||
1029 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-4, $chr, 4); |
||
1030 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 5); |
||
1031 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 6); |
||
1032 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 7); |
||
1033 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8); |
||
1034 | return $marr; |
||
1035 | } |
||
1036 | |||
1037 | /**
|
||
1038 | * Places the 8 bits of the third special corner case.
|
||
1039 | * (Annex F - ECC 200 symbol character placement)
|
||
1040 | * @param $marr (array) Array of symbols.
|
||
1041 | * @param $nrow (int) Number of rows.
|
||
1042 | * @param $ncol (int) Number of columns.
|
||
1043 | * @param $chr (int) Char byte.
|
||
1044 | * @return array
|
||
1045 | * @protected
|
||
1046 | */
|
||
1047 | protected function placeCornerC($marr, $nrow, $ncol, $chr) { |
||
1048 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1); |
||
1049 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2); |
||
1050 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3); |
||
1051 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
||
1052 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
||
1053 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6); |
||
1054 | $marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7); |
||
1055 | $marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8); |
||
1056 | return $marr; |
||
1057 | } |
||
1058 | |||
1059 | /**
|
||
1060 | * Places the 8 bits of the fourth special corner case.
|
||
1061 | * (Annex F - ECC 200 symbol character placement)
|
||
1062 | * @param $marr (array) Array of symbols.
|
||
1063 | * @param $nrow (int) Number of rows.
|
||
1064 | * @param $ncol (int) Number of columns.
|
||
1065 | * @param $chr (int) Char byte.
|
||
1066 | * @return array
|
||
1067 | * @protected
|
||
1068 | */
|
||
1069 | protected function placeCornerD($marr, $nrow, $ncol, $chr) { |
||
1070 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1); |
||
1071 | $marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, $ncol-1, $chr, 2); |
||
1072 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 3); |
||
1073 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
||
1074 | $marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
||
1075 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-3, $chr, 6); |
||
1076 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-2, $chr, 7); |
||
1077 | $marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8); |
||
1078 | return $marr; |
||
1079 | } |
||
1080 | |||
1081 | /**
|
||
1082 | * Build a placement map.
|
||
1083 | * (Annex F - ECC 200 symbol character placement)
|
||
1084 | * @param $nrow (int) Number of rows.
|
||
1085 | * @param $ncol (int) Number of columns.
|
||
1086 | * @return array
|
||
1087 | * @protected
|
||
1088 | */
|
||
1089 | protected function getPlacementMap($nrow, $ncol) { |
||
1090 | // initialize array with zeros
|
||
1091 | $marr = array_fill(0, ($nrow * $ncol), 0); |
||
1092 | // set starting values
|
||
1093 | $chr = 1; |
||
1094 | $row = 4; |
||
1095 | $col = 0; |
||
1096 | do {
|
||
1097 | // repeatedly first check for one of the special corner cases, then
|
||
1098 | if (($row == $nrow) AND ($col == 0)) { |
||
1099 | $marr = $this->placeCornerA($marr, $nrow, $ncol, $chr); |
||
1100 | ++$chr;
|
||
1101 | } |
||
1102 | if (($row == ($nrow - 2)) AND ($col == 0) AND ($ncol % 4)) { |
||
1103 | $marr = $this->placeCornerB($marr, $nrow, $ncol, $chr); |
||
1104 | ++$chr;
|
||
1105 | } |
||
1106 | if (($row == ($nrow - 2)) AND ($col == 0) AND (($ncol % 8) == 4)) { |
||
1107 | $marr = $this->placeCornerC($marr, $nrow, $ncol, $chr); |
||
1108 | ++$chr;
|
||
1109 | } |
||
1110 | if (($row == ($nrow + 4)) AND ($col == 2) AND (!($ncol % 8))) { |
||
1111 | $marr = $this->placeCornerD($marr, $nrow, $ncol, $chr); |
||
1112 | ++$chr;
|
||
1113 | } |
||
1114 | // sweep upward diagonally, inserting successive characters,
|
||
1115 | do {
|
||
1116 | if (($row < $nrow) AND ($col >= 0) AND (!$marr[(($row * $ncol) + $col)])) { |
||
1117 | $marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr); |
||
1118 | ++$chr;
|
||
1119 | } |
||
1120 | $row -= 2; |
||
1121 | $col += 2; |
||
1122 | } while (($row >= 0) AND ($col < $ncol)); |
||
1123 | ++$row;
|
||
1124 | $col += 3; |
||
1125 | // & then sweep downward diagonally, inserting successive characters,...
|
||
1126 | do {
|
||
1127 | if (($row >= 0) AND ($col < $ncol) AND (!$marr[(($row * $ncol) + $col)])) { |
||
1128 | $marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr); |
||
1129 | ++$chr;
|
||
1130 | } |
||
1131 | $row += 2; |
||
1132 | $col -= 2; |
||
1133 | } while (($row < $nrow) AND ($col >= 0)); |
||
1134 | $row += 3; |
||
1135 | ++$col;
|
||
1136 | // ... until the entire array is scanned
|
||
1137 | } while (($row < $nrow) OR ($col < $ncol)); |
||
1138 | // lastly, if the lower righthand corner is untouched, fill in fixed pattern
|
||
1139 | if (!$marr[(($nrow * $ncol) - 1)]) { |
||
1140 | $marr[(($nrow * $ncol) - 1)] = 1; |
||
1141 | $marr[(($nrow * $ncol) - $ncol - 2)] = 1; |
||
1142 | } |
||
1143 | return $marr; |
||
1144 | } |
||
1145 | |||
1146 | } // end DataMatrix class
|
||
1147 | //============================================================+
|
||
1148 | // END OF FILE
|
||
1149 | //============================================================+ |