ILIAS  release_5-3 Revision v5.3.23-19-g915713cf615
datamatrix.php
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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 
46 // custom definitions
47 if (!defined('DATAMATRIXDEFS')) {
48 
52  define('DATAMATRIXDEFS', true);
53 
54  // -----------------------------------------------------
55 
56 } // end of custom definitions
57 
58 // #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
59 
60 
64 define('ENC_ASCII', 0);
65 
69 define('ENC_C40', 1);
70 
74 define('ENC_TXT', 2);
75 
79 define('ENC_X12', 3);
80 
84 define('ENC_EDF', 4);
85 
89 define('ENC_BASE256', 5);
90 
94 define('ENC_ASCII_EXT', 6);
95 
99 define('ENC_ASCII_NUM', 7);
100 
110 class Datamatrix {
111 
116  protected $barcode_array = array();
117 
122  protected $last_enc = ENC_ASCII;
123 
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 
184  protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12');
185 
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 
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 
352  public function getBarcodeArray() {
353  return $this->barcode_array;
354  }
355 
366  protected function getGFProduct($a, $b, $log, $alog, $gf) {
367  if (($a == 0) OR ($b == 0)) {
368  return 0;
369  }
370  return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]);
371  }
372 
384  protected function getErrorCorrection($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 $wd;
437  }
438 
446  protected function get253StateCodeword($cwpad, $cwpos) {
447  $pad = ($cwpad + (((149 * $cwpos) % 253) + 1));
448  if ($pad > 254) {
449  $pad -= 254;
450  }
451  return $pad;
452  }
453 
461  protected function get255StateCodeword($cwpad, $cwpos) {
462  $pad = ($cwpad + (((149 * $cwpos) % 255) + 1));
463  if ($pad > 255) {
464  $pad -= 256;
465  }
466  return $pad;
467  }
468 
476  protected function isCharMode($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 $status;
513  }
514 
523  protected function lookAheadTest($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  ++$k;
639  }
640  return ENC_C40;
641  }
642  }
643  }
644  } // end of while
645  }
646 
653  protected function getSwitchEncodingCodeword($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 $cw;
684  }
685 
692  protected function getMaxDataCodewords($numcw) {
693  foreach ($this->symbattr as $key => $matrix) {
694  if ($matrix[11] >= $numcw) {
695  return $matrix[11];
696  }
697  }
698  return 0;
699  }
700 
707  protected function getHighLevelEncoding($data) {
708  // STEP A. Start in ASCII encodation.
709  $enc = ENC_ASCII; // current encoding mode
710  $pos = 0; // current position
711  $cw = array(); // array of codewords to be returned
712  $cw_num = 0; // number of data codewords
713  $data_length = strlen($data); // number of chars
714  while ($pos < $data_length) {
715  // set last used encoding
716  $this->last_enc = $enc;
717  switch ($enc) {
718  case ENC_ASCII: { // STEP B. While in ASCII encodation
719  if (($data_length > 1) AND ($pos < ($data_length - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) {
720  // 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode.
721  $cw[] = (intval(substr($data, $pos, 2)) + 130);
722  ++$cw_num;
723  $pos += 2;
724  } else {
725  // 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
726  $newenc = $this->lookAheadTest($data, $pos, $enc);
727  if ($newenc != $enc) {
728  // switch to new encoding
729  $enc = $newenc;
730  $cw[] = $this->getSwitchEncodingCodeword($enc);
731  ++$cw_num;
732  } else {
733  // get new byte
734  $chr = ord($data[$pos]);
735  ++$pos;
736  if ($this->isCharMode($chr, ENC_ASCII_EXT)) {
737  // 3. If the next data character is extended ASCII (greater than 127) encode it in ASCII mode first using the Upper Shift (value 235) character.
738  $cw[] = 235;
739  $cw[] = ($chr - 127);
740  $cw_num += 2;
741  } else {
742  // 4. Otherwise process the next data character in ASCII encodation.
743  $cw[] = ($chr + 1);
744  ++$cw_num;
745  }
746  }
747  }
748  break;
749  }
750  case ENC_C40 : // Upper-case alphanumeric
751  case ENC_TXT : // Lower-case alphanumeric
752  case ENC_X12 : { // ANSI X12
753  $temp_cw = array();
754  $p = 0;
755  $epos = $pos;
756  // get charset ID
757  $set_id = $this->chset_id[$enc];
758  // get basic charset for current encoding
759  $charset = $this->chset[$set_id];
760  do {
761  // 2. process the next character in C40 encodation.
762  $chr = ord($data[$epos]);
763  ++$epos;
764  // check for extended character
765  if ($chr & 0x80) {
766  if ($enc == ENC_X12) {
767  return false;
768  }
769  $chr = ($chr & 0x7f);
770  $temp_cw[] = 1; // shift 2
771  $temp_cw[] = 30; // upper shift
772  $p += 2;
773  }
774  if (isset($charset[$chr])) {
775  $temp_cw[] = $charset[$chr];
776  ++$p;
777  } else {
778  if (isset($this->chset['SH1'][$chr])) {
779  $temp_cw[] = 0; // shift 1
780  $shiftset = $this->chset['SH1'];
781  } elseif (isset($chr, $this->chset['SH2'][$chr])) {
782  $temp_cw[] = 1; // shift 2
783  $shiftset = $this->chset['SH2'];
784  } elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) {
785  $temp_cw[] = 2; // shift 3
786  $shiftset = $this->chset['S3C'];
787  } elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) {
788  $temp_cw[] = 2; // shift 3
789  $shiftset = $this->chset['S3T'];
790  } else {
791  return false;
792  }
793  $temp_cw[] = $shiftset[$chr];
794  $p += 2;
795  }
796  if ($p >= 3) {
797  $c1 = array_shift($temp_cw);
798  $c2 = array_shift($temp_cw);
799  $c3 = array_shift($temp_cw);
800  $p -= 3;
801  $tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1);
802  $cw[] = ($tmp >> 8);
803  $cw[] = ($tmp % 256);
804  $cw_num += 2;
805  $pos = $epos;
806  // 1. If the C40 encoding is at the point of starting a new double symbol character and if the look-ahead test (starting at step J) indicates another mode, switch to that mode.
807  $newenc = $this->lookAheadTest($data, $pos, $enc);
808  if ($newenc != $enc) {
809  // switch to new encoding
810  $enc = $newenc;
811  if ($enc != ENC_ASCII) {
812  // set unlatch character
813  $cw[] = $this->getSwitchEncodingCodeword(ENC_ASCII);
814  ++$cw_num;
815  }
816  $cw[] = $this->getSwitchEncodingCodeword($enc);
817  ++$cw_num;
818  $pos -= $p;
819  $p = 0;
820  break;
821  }
822  }
823  } while (($p > 0) AND ($epos < $data_length));
824  // process last data (if any)
825  if ($p > 0) {
826  // get remaining number of data symbols
827  $cwr = ($this->getMaxDataCodewords($cw_num) - $cw_num);
828  if (($cwr == 1) AND ($p == 1)) {
829  // d. If one symbol character remains and one C40 value (data character) remains to be encoded
830  $c1 = array_shift($temp_cw);
831  --$p;
832  $cw[] = ($chr + 1);
833  ++$cw_num;
834  $pos = $epos;
835  $enc = ENC_ASCII;
836  $this->last_enc = $enc;
837  } elseif (($cwr == 2) AND ($p == 1)) {
838  // c. If two symbol characters remain and only one C40 value (data character) remains to be encoded
839  $c1 = array_shift($temp_cw);
840  --$p;
841  $cw[] = 254;
842  $cw[] = ($chr + 1);
843  $cw_num += 2;
844  $pos = $epos;
845  $enc = ENC_ASCII;
846  $this->last_enc = $enc;
847  } elseif (($cwr == 2) AND ($p == 2)) {
848  // b. If two symbol characters remain and two C40 values remain to be encoded
849  $c1 = array_shift($temp_cw);
850  $c2 = array_shift($temp_cw);
851  $p -= 2;
852  $tmp = ((1600 * $c1) + (40 * $c2) + 1);
853  $cw[] = ($tmp >> 8);
854  $cw[] = ($tmp % 256);
855  $cw_num += 2;
856  $pos = $epos;
857  $enc = ENC_ASCII;
858  $this->last_enc = $enc;
859  } else {
860  // switch to ASCII encoding
861  if ($enc != ENC_ASCII) {
862  $enc = ENC_ASCII;
863  $this->last_enc = $enc;
864  $cw[] = $this->getSwitchEncodingCodeword($enc);
865  ++$cw_num;
866  $pos = ($epos - $p);
867  }
868  }
869  }
870  break;
871  }
872  case ENC_EDF: { // F. While in EDIFACT (EDF) encodation
873  // initialize temporary array with 0 length
874  $temp_cw = array();
875  $epos = $pos;
876  $field_length = 0;
877  $newenc = $enc;
878  do {
879  // 2. process the next character in EDIFACT encodation.
880  $chr = ord($data[$epos]);
881  if ($this->isCharMode($chr, ENC_EDF)) {
882  ++$epos;
883  $temp_cw[] = $chr;
884  ++$field_length;
885  }
886  if (($field_length == 4) OR ($epos == $data_length) OR !$this->isCharMode($chr, ENC_EDF)) {
887  if (($epos == $data_length) AND ($field_length < 3)) {
888  $enc = ENC_ASCII;
889  $cw[] = $this->getSwitchEncodingCodeword($enc);
890  ++$cw_num;
891  break;
892  }
893  if ($field_length < 4) {
894  // set unlatch character
895  $temp_cw[] = 0x1f;
896  ++$field_length;
897  // fill empty characters
898  for ($i = $field_length; $i < 4; ++$i) {
899  $temp_cw[] = 0;
900  }
901  $enc = ENC_ASCII;
902  $this->last_enc = $enc;
903  }
904  // encodes four data characters in three codewords
905  $tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4);
906  if ($tcw > 0) {
907  $cw[] = $tcw;
908  $cw_num++;
909  }
910  $tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2);
911  if ($tcw > 0) {
912  $cw[] = $tcw;
913  $cw_num++;
914  }
915  $tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F);
916  if ($tcw > 0) {
917  $cw[] = $tcw;
918  $cw_num++;
919  }
920  $temp_cw = array();
921  $pos = $epos;
922  $field_length = 0;
923  if ($enc == ENC_ASCII) {
924  break; // exit from EDIFACT mode
925  }
926  }
927  } while ($epos < $data_length);
928  break;
929  }
930  case ENC_BASE256: { // G. While in Base 256 (B256) encodation
931  // initialize temporary array with 0 length
932  $temp_cw = array();
933  $field_length = 0;
934  while (($pos < $data_length) AND ($field_length <= 1555)) {
935  $newenc = $this->lookAheadTest($data, $pos, $enc);
936  if ($newenc != $enc) {
937  // 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode.
938  $enc = $newenc;
939  break; // exit from B256 mode
940  } else {
941  // 2. Otherwise, process the next character in Base 256 encodation.
942  $chr = ord($data[$pos]);
943  ++$pos;
944  $temp_cw[] = $chr;
945  ++$field_length;
946  }
947  }
948  // set field length
949  if ($field_length <= 249) {
950  $cw[] = $this->get255StateCodeword($field_length, ($cw_num + 1));
951  ++$cw_num;
952  } else {
953  $cw[] = $this->get255StateCodeword((floor($field_length / 250) + 249), ($cw_num + 1));
954  $cw[] = $this->get255StateCodeword(($field_length % 250), ($cw_num + 2));
955  $cw_num += 2;
956  }
957  if (!empty($temp_cw)) {
958  // add B256 field
959  foreach ($temp_cw as $p => $cht) {
960  $cw[] = $this->get255StateCodeword($cht, ($cw_num + $p + 1));
961  }
962  }
963  break;
964  }
965  } // end of switch enc
966  } // end of while
967  return $cw;
968  }
969 
983  protected function placeModule($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 $marr;
994  }
995 
1008  protected function placeUtah($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 $marr;
1018  }
1019 
1030  protected function placeCornerA($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 $marr;
1040  }
1041 
1052  protected function placeCornerB($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 $marr;
1062  }
1063 
1074  protected function placeCornerC($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 $marr;
1084  }
1085 
1096  protected function placeCornerD($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 $marr;
1106  }
1107 
1116  protected function getPlacementMap($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 //============================================================+
$params
Definition: disable.php:11
const ENC_ASCII_NUM
ASCII number encoding: ASCII digits (2 bytes per CW)
Definition: datamatrix.php:99
$chset_id
Map encodation modes whit character sets.
Definition: datamatrix.php:184
$code
Definition: example_050.php:99
$last_enc
Store last used encoding for data codewords.
Definition: datamatrix.php:122
get255StateCodeword($cwpad, $cwpos)
Return the 255-state codeword.
Definition: datamatrix.php:461
const ENC_TXT
TEXT encoding: Lower-case alphanumeric (3/2 bytes per CW)
Definition: datamatrix.php:74
placeUtah($marr, $nrow, $ncol, $row, $col, $chr)
Places the 8 bits of a utah-shaped symbol character.
placeCornerD($marr, $nrow, $ncol, $chr)
Places the 8 bits of the fourth special corner case.
const ENC_EDF
EDIFACT encoding: ASCII character 32 to 94 (4/3 bytes per CW)
Definition: datamatrix.php:84
__construct($code)
This is the class constructor.
Definition: datamatrix.php:235
lookAheadTest($data, $pos, $mode)
The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S)...
Definition: datamatrix.php:523
isCharMode($chr, $mode)
Returns true if the char belongs to the selected mode.
Definition: datamatrix.php:476
placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit)
Places "chr+bit" with appropriate wrapping within array[].
Definition: datamatrix.php:983
$r
Definition: example_031.php:79
getPlacementMap($nrow, $ncol)
Build a placement map.
$nd
Definition: error.php:10
const ENC_ASCII_EXT
ASCII extended encoding: ASCII character 128 to 255 (1/2 byte per CW)
Definition: datamatrix.php:94
getSwitchEncodingCodeword($mode)
Get the switching codeword to a new encoding mode (latch codeword)
Definition: datamatrix.php:653
$chset
Basic set of characters for each encodation mode.
Definition: datamatrix.php:190
getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301)
Add error correction codewords to data codewords array (ANNEX E).
Definition: datamatrix.php:384
placeCornerC($marr, $nrow, $ncol, $chr)
Places the 8 bits of the third special corner case.
$n
Definition: RandomTest.php:85
Create styles array
The data for the language used.
get253StateCodeword($cwpad, $cwpos)
Return the 253-state codeword.
Definition: datamatrix.php:446
const ENC_C40
C40 encoding: Upper-case alphanumeric (3/2 bytes per CW)
Definition: datamatrix.php:69
getMaxDataCodewords($numcw)
Choose the minimum matrix size and return the max number of data codewords.
Definition: datamatrix.php:692
$symbattr
Table of Data Matrix ECC 200 Symbol Attributes:
Definition: datamatrix.php:145
const ENC_BASE256
BASE 256 encoding: ASCII character 0 to 255 (1 byte per CW)
Definition: datamatrix.php:89
const ENC_ASCII(!defined('DATAMATRIXDEFS'))
ASCII encoding: ASCII character 0 to 127 (1 byte per CW)
Definition: datamatrix.php:64
placeCornerB($marr, $nrow, $ncol, $chr)
Places the 8 bits of the second special corner case.
$i
Definition: disco.tpl.php:19
getGFProduct($a, $b, $log, $alog, $gf)
Product of two numbers in a Power-of-Two Galois Field.
Definition: datamatrix.php:366
Class to create DataMatrix ECC 200 barcode arrays for TCPDF class.
Definition: datamatrix.php:110
getHighLevelEncoding($data)
Get high level encoding using the minimum symbol data characters for ECC 200.
Definition: datamatrix.php:707
defined( 'APPLICATION_ENV')||define( 'APPLICATION_ENV'
Definition: bootstrap.php:27
const ENC_X12
X12 encoding: ANSI X12 (3/2 byte per CW)
Definition: datamatrix.php:79
$barcode_array
Barcode array to be returned which is readable by TCPDF.
Definition: datamatrix.php:116
getBarcodeArray()
Returns a barcode array which is readable by TCPDF.
Definition: datamatrix.php:352
$key
Definition: croninfo.php:18
placeCornerA($marr, $nrow, $ncol, $chr)
Places the 8 bits of the first special corner case.