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824f8c45 | 1 | <?php |
2 | //============================================================+ | |
3 | // File name : datamatrix.php | |
4 | // Version : 1.0.008 | |
5 | // Begin : 2010-06-07 | |
6 | // Last Update : 2014-05-06 | |
7 | // Author : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com | |
8 | // License : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html) | |
9 | // ------------------------------------------------------------------- | |
10 | // Copyright (C) 2010-2014 Nicola Asuni - Tecnick.com LTD | |
11 | // | |
12 | // This file is part of TCPDF software library. | |
13 | // | |
14 | // TCPDF is free software: you can redistribute it and/or modify it | |
15 | // under the terms of the GNU Lesser General Public License as | |
16 | // published by the Free Software Foundation, either version 3 of the | |
17 | // License, or (at your option) any later version. | |
18 | // | |
19 | // TCPDF is distributed in the hope that it will be useful, but | |
20 | // WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
22 | // See the GNU Lesser General Public License for more details. | |
23 | // | |
24 | // You should have received a copy of the GNU Lesser General Public License | |
25 | // along with TCPDF. If not, see <http://www.gnu.org/licenses/>. | |
26 | // | |
27 | // See LICENSE.TXT file for more information. | |
28 | // ------------------------------------------------------------------- | |
29 | // | |
30 | // DESCRIPTION : | |
31 | // | |
32 | // Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. | |
33 | // DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. | |
34 | //============================================================+ | |
35 | ||
36 | /** | |
37 | * @file | |
38 | * Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. | |
39 | * DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. | |
40 | * | |
41 | * @package com.tecnick.tcpdf | |
42 | * @author Nicola Asuni | |
43 | * @version 1.0.008 | |
44 | */ | |
45 | ||
46 | // custom definitions | |
47 | if (!defined('DATAMATRIXDEFS')) { | |
48 | ||
49 | /** | |
50 | * Indicate that definitions for this class are set | |
51 | */ | |
52 | define('DATAMATRIXDEFS', true); | |
53 | ||
54 | // ----------------------------------------------------- | |
55 | ||
56 | } // end of custom definitions | |
57 | ||
58 | // #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*# | |
59 | ||
60 | ||
61 | /** | |
62 | * ASCII encoding: ASCII character 0 to 127 (1 byte per CW) | |
63 | */ | |
64 | define('ENC_ASCII', 0); | |
65 | ||
66 | /** | |
67 | * C40 encoding: Upper-case alphanumeric (3/2 bytes per CW) | |
68 | */ | |
69 | define('ENC_C40', 1); | |
70 | ||
71 | /** | |
72 | * TEXT encoding: Lower-case alphanumeric (3/2 bytes per CW) | |
73 | */ | |
74 | define('ENC_TXT', 2); | |
75 | ||
76 | /** | |
77 | * X12 encoding: ANSI X12 (3/2 byte per CW) | |
78 | */ | |
79 | define('ENC_X12', 3); | |
80 | ||
81 | /** | |
82 | * EDIFACT encoding: ASCII character 32 to 94 (4/3 bytes per CW) | |
83 | */ | |
84 | define('ENC_EDF', 4); | |
85 | ||
86 | /** | |
87 | * BASE 256 encoding: ASCII character 0 to 255 (1 byte per CW) | |
88 | */ | |
89 | define('ENC_BASE256', 5); | |
90 | ||
91 | /** | |
92 | * ASCII extended encoding: ASCII character 128 to 255 (1/2 byte per CW) | |
93 | */ | |
94 | define('ENC_ASCII_EXT', 6); | |
95 | ||
96 | /** | |
97 | * ASCII number encoding: ASCII digits (2 bytes per CW) | |
98 | */ | |
99 | define('ENC_ASCII_NUM', 7); | |
100 | ||
101 | /** | |
102 | * @class Datamatrix | |
103 | * Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. | |
104 | * DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. | |
105 | * | |
106 | * @package com.tecnick.tcpdf | |
107 | * @author Nicola Asuni | |
108 | * @version 1.0.004 | |
109 | */ | |
110 | class Datamatrix { | |
111 | ||
112 | /** | |
113 | * Barcode array to be returned which is readable by TCPDF. | |
114 | * @protected | |
115 | */ | |
116 | protected $barcode_array = array(); | |
117 | ||
118 | /** | |
119 | * Store last used encoding for data codewords. | |
120 | * @protected | |
121 | */ | |
122 | protected $last_enc = ENC_ASCII; | |
123 | ||
124 | /** | |
125 | * Table of Data Matrix ECC 200 Symbol Attributes:<ul> | |
126 | * <li>total matrix rows (including finder pattern)</li> | |
127 | * <li>total matrix cols (including finder pattern)</li> | |
128 | * <li>total matrix rows (without finder pattern)</li> | |
129 | * <li>total matrix cols (without finder pattern)</li> | |
130 | * <li>region data rows (with finder pattern)</li> | |
131 | * <li>region data col (with finder pattern)</li> | |
132 | * <li>region data rows (without finder pattern)</li> | |
133 | * <li>region data col (without finder pattern)</li> | |
134 | * <li>horizontal regions</li> | |
135 | * <li>vertical regions</li> | |
136 | * <li>regions</li> | |
137 | * <li>data codewords</li> | |
138 | * <li>error codewords</li> | |
139 | * <li>blocks</li> | |
140 | * <li>data codewords per block</li> | |
141 | * <li>error codewords per block</li> | |
142 | * </ul> | |
143 | * @protected | |
144 | */ | |
145 | protected $symbattr = array( | |
146 | // square form --------------------------------------------------------------------------------------- | |
147 | array(0x00a,0x00a,0x008,0x008,0x00a,0x00a,0x008,0x008,0x001,0x001,0x001,0x003,0x005,0x001,0x003,0x005), // 10x10 | |
148 | array(0x00c,0x00c,0x00a,0x00a,0x00c,0x00c,0x00a,0x00a,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 12x12 | |
149 | array(0x00e,0x00e,0x00c,0x00c,0x00e,0x00e,0x00c,0x00c,0x001,0x001,0x001,0x008,0x00a,0x001,0x008,0x00a), // 14x14 | |
150 | array(0x010,0x010,0x00e,0x00e,0x010,0x010,0x00e,0x00e,0x001,0x001,0x001,0x00c,0x00c,0x001,0x00c,0x00c), // 16x16 | |
151 | array(0x012,0x012,0x010,0x010,0x012,0x012,0x010,0x010,0x001,0x001,0x001,0x012,0x00e,0x001,0x012,0x00e), // 18x18 | |
152 | array(0x014,0x014,0x012,0x012,0x014,0x014,0x012,0x012,0x001,0x001,0x001,0x016,0x012,0x001,0x016,0x012), // 20x20 | |
153 | array(0x016,0x016,0x014,0x014,0x016,0x016,0x014,0x014,0x001,0x001,0x001,0x01e,0x014,0x001,0x01e,0x014), // 22x22 | |
154 | array(0x018,0x018,0x016,0x016,0x018,0x018,0x016,0x016,0x001,0x001,0x001,0x024,0x018,0x001,0x024,0x018), // 24x24 | |
155 | array(0x01a,0x01a,0x018,0x018,0x01a,0x01a,0x018,0x018,0x001,0x001,0x001,0x02c,0x01c,0x001,0x02c,0x01c), // 26x26 | |
156 | array(0x020,0x020,0x01c,0x01c,0x010,0x010,0x00e,0x00e,0x002,0x002,0x004,0x03e,0x024,0x001,0x03e,0x024), // 32x32 | |
157 | array(0x024,0x024,0x020,0x020,0x012,0x012,0x010,0x010,0x002,0x002,0x004,0x056,0x02a,0x001,0x056,0x02a), // 36x36 | |
158 | array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40 | |
159 | array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44 | |
160 | array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48 | |
161 | array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52 | |
162 | array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64 | |
163 | array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72 | |
164 | array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80 | |
165 | array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88 | |
166 | array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96 | |
167 | array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104 | |
168 | array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120 | |
169 | array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132 | |
170 | array(0x090,0x090,0x084,0x084,0x018,0x018,0x016,0x016,0x006,0x006,0x024,0x616,0x26c,0x00a,0x09c,0x03e), // 144x144 | |
171 | // rectangular form (currently unused) --------------------------------------------------------------------------- | |
172 | array(0x008,0x012,0x006,0x010,0x008,0x012,0x006,0x010,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 8x18 | |
173 | array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32 | |
174 | array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26 | |
175 | array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36 | |
176 | array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36 | |
177 | array(0x010,0x030,0x00e,0x02c,0x010,0x018,0x00e,0x016,0x001,0x002,0x002,0x031,0x01c,0x001,0x031,0x01c) // 16x48 | |
178 | ); | |
179 | ||
180 | /** | |
181 | * Map encodation modes whit character sets. | |
182 | * @protected | |
183 | */ | |
184 | protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12'); | |
185 | ||
186 | /** | |
187 | * Basic set of characters for each encodation mode. | |
188 | * @protected | |
189 | */ | |
190 | protected $chset = array( | |
191 | 'C40' => array( // Basic set for C40 ---------------------------------------------------------------------------- | |
192 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // | |
193 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // | |
194 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // | |
195 | 0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27),// | |
196 | 'TXT' => array( // Basic set for TEXT --------------------------------------------------------------------------- | |
197 | 'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // | |
198 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, // | |
199 | 0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, // | |
200 | 0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),// | |
201 | 'SH1' => array( // Shift 1 set ---------------------------------------------------------------------------------- | |
202 | 0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, // | |
203 | 0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, // | |
204 | 0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, // | |
205 | 0x1e=>0x1e,0x1f=>0x1f), // | |
206 | 'SH2' => array( // Shift 2 set ---------------------------------------------------------------------------------- | |
207 | 0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, // | |
208 | 0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, // | |
209 | 0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), // | |
210 | 'S3C' => array( // Shift 3 set for C40 -------------------------------------------------------------------------- | |
211 | 0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, // | |
212 | 0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, // | |
213 | 0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // | |
214 | 0x7e=>0x1e,0x7f=>0x1f), | |
215 | 'S3T' => array( // Shift 3 set for TEXT ------------------------------------------------------------------------- | |
216 | 0x60=>0x00,0x41=>0x01,0x42=>0x02,0x43=>0x03,0x44=>0x04,0x45=>0x05,0x46=>0x06,0x47=>0x07,0x48=>0x08,0x49=>0x09, // | |
217 | 0x4a=>0x0a,0x4b=>0x0b,0x4c=>0x0c,0x4d=>0x0d,0x4e=>0x0e,0x4f=>0x0f,0x50=>0x10,0x51=>0x11,0x52=>0x12,0x53=>0x13, // | |
218 | 0x54=>0x14,0x55=>0x15,0x56=>0x16,0x57=>0x17,0x58=>0x18,0x59=>0x19,0x5a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // | |
219 | 0x7e=>0x1e,0x7f=>0x1f), // | |
220 | 'X12' => array( // Set for X12 ---------------------------------------------------------------------------------- | |
221 | 0x0d=>0x00,0x2a=>0x01,0x3e=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // | |
222 | 0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // | |
223 | 0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // | |
224 | 0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27) // | |
225 | ); | |
226 | ||
227 | // ----------------------------------------------------------------------------- | |
228 | ||
229 | /** | |
230 | * This is the class constructor. | |
231 | * Creates a datamatrix object | |
232 | * @param $code (string) Code to represent using Datamatrix. | |
233 | * @public | |
234 | */ | |
235 | public function __construct($code) { | |
236 | $barcode_array = array(); | |
237 | if ((is_null($code)) OR ($code == '\0') OR ($code == '')) { | |
238 | return false; | |
239 | } | |
240 | // get data codewords | |
241 | $cw = $this->getHighLevelEncoding($code); | |
242 | // number of data codewords | |
243 | $nd = count($cw); | |
244 | // check size | |
245 | if ($nd > 1558) { | |
246 | return false; | |
247 | } | |
248 | // get minimum required matrix size. | |
249 | foreach ($this->symbattr as $params) { | |
250 | if ($params[11] >= $nd) { | |
251 | break; | |
252 | } | |
253 | } | |
254 | if ($params[11] < $nd) { | |
255 | // too much data | |
256 | return false; | |
257 | } elseif ($params[11] > $nd) { | |
258 | // add padding | |
259 | if ((($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 | $data_lenght = strlen($data); // number of chars | |
714 | while ($pos < $data_lenght) { | |
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 (($data_lenght > 1) AND ($pos < ($data_lenght - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) { | |
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 < $data_lenght)); | |
824 | // process last data (if any) | |
825 | if ($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 lenght | |
874 | $temp_cw = array(); | |
875 | $epos = $pos; | |
876 | $field_lenght = 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_lenght; | |
885 | } | |
886 | if (($field_lenght == 4) OR ($epos == $data_lenght) OR !$this->isCharMode($chr, ENC_EDF)) { | |
887 | if (($epos == $data_lenght) AND ($field_lenght < 3)) { | |
888 | $enc = ENC_ASCII; | |
889 | $cw[] = $this->getSwitchEncodingCodeword($enc); | |
890 | ++$cw_num; | |
891 | break; | |
892 | } | |
893 | if ($field_lenght < 4) { | |
894 | // set unlatch character | |
895 | $temp_cw[] = 0x1f; | |
896 | ++$field_lenght; | |
897 | // fill empty characters | |
898 | for ($i = $field_lenght; $i < 4; ++$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 | $field_lenght = 0; | |
923 | if ($enc == ENC_ASCII) { | |
924 | break; // exit from EDIFACT mode | |
925 | } | |
926 | } | |
927 | } while ($epos < $data_lenght); | |
928 | break; | |
929 | } | |
930 | case ENC_BASE256: { // G. While in Base 256 (B256) encodation | |
931 | // initialize temporary array with 0 lenght | |
932 | $temp_cw = array(); | |
933 | $field_lenght = 0; | |
934 | while (($pos < $data_lenght) AND ($field_lenght <= 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_lenght; | |
946 | } | |
947 | } | |
948 | // set field lenght | |
949 | if ($field_lenght <= 249) { | |
950 | $cw[] = $this->get255StateCodeword($field_lenght, ($cw_num + 1)); | |
951 | ++$cw_num; | |
952 | } else { | |
953 | $cw[] = $this->get255StateCodeword((floor($field_lenght / 250) + 249), ($cw_num + 1)); | |
954 | $cw[] = $this->get255StateCodeword(($field_lenght % 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 | //============================================================+ |