ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
qrcode.php
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1 <?php
2 //============================================================+
3 // File name : qrcode.php
4 // Version : 1.0.010
5 // Begin : 2010-03-22
6 // Last Update : 2012-07-25
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) 2010-2012 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 QR-code arrays for TCPDF class.
33 // QR Code symbol is a 2D barcode that can be scanned by
34 // handy terminals such as a mobile phone with CCD.
35 // The capacity of QR Code is up to 7000 digits or 4000
36 // characters, and has high robustness.
37 // This class supports QR Code model 2, described in
38 // JIS (Japanese Industrial Standards) X0510:2004
39 // or ISO/IEC 18004.
40 // Currently the following features are not supported:
41 // ECI and FNC1 mode, Micro QR Code, QR Code model 1,
42 // Structured mode.
43 //
44 // This class is derived from the following projects:
45 // ---------------------------------------------------------
46 // "PHP QR Code encoder"
47 // License: GNU-LGPLv3
48 // Copyright (C) 2010 by Dominik Dzienia <deltalab at poczta dot fm>
49 // http://phpqrcode.sourceforge.net/
50 // https://sourceforge.net/projects/phpqrcode/
51 //
52 // The "PHP QR Code encoder" is based on
53 // "C libqrencode library" (ver. 3.1.1)
54 // License: GNU-LGPL 2.1
55 // Copyright (C) 2006-2010 by Kentaro Fukuchi
56 // http://megaui.net/fukuchi/works/qrencode/index.en.html
57 //
58 // Reed-Solomon code encoder is written by Phil Karn, KA9Q.
59 // Copyright (C) 2002-2006 Phil Karn, KA9Q
60 //
61 // QR Code is registered trademark of DENSO WAVE INCORPORATED
62 // http://www.denso-wave.com/qrcode/index-e.html
63 // ---------------------------------------------------------
64 //============================================================+
65 
82 // definitions
83 if (!defined('QRCODEDEFS')) {
84 
88  define('QRCODEDEFS', true);
89 
90  // -----------------------------------------------------
91 
92  // Encoding modes (characters which can be encoded in QRcode)
93 
97  define('QR_MODE_NL', -1);
98 
102  define('QR_MODE_NM', 0);
103 
107  define('QR_MODE_AN', 1);
108 
112  define('QR_MODE_8B', 2);
113 
117  define('QR_MODE_KJ', 3);
118 
122  define('QR_MODE_ST', 4);
123 
124  // -----------------------------------------------------
125 
126  // Levels of error correction.
127  // QRcode has a function of an error correcting for miss reading that white is black.
128  // Error correcting is defined in 4 level as below.
129 
133  define('QR_ECLEVEL_L', 0);
134 
138  define('QR_ECLEVEL_M', 1);
139 
143  define('QR_ECLEVEL_Q', 2);
144 
148  define('QR_ECLEVEL_H', 3);
149 
150  // -----------------------------------------------------
151 
152  // Version. Size of QRcode is defined as version.
153  // Version is from 1 to 40.
154  // Version 1 is 21*21 matrix. And 4 modules increases whenever 1 version increases.
155  // So version 40 is 177*177 matrix.
156 
160  define('QRSPEC_VERSION_MAX', 40);
161 
165  define('QRSPEC_WIDTH_MAX', 177);
166 
167  // -----------------------------------------------------
168 
172  define('QRCAP_WIDTH', 0);
173 
177  define('QRCAP_WORDS', 1);
178 
182  define('QRCAP_REMINDER', 2);
183 
187  define('QRCAP_EC', 3);
188 
189  // -----------------------------------------------------
190 
191  // Structure (currently usupported)
192 
196  define('STRUCTURE_HEADER_BITS', 20);
197 
201  define('MAX_STRUCTURED_SYMBOLS', 16);
202 
203  // -----------------------------------------------------
204 
205  // Masks
206 
210  define('N1', 3);
211 
215  define('N2', 3);
216 
220  define('N3', 40);
221 
225  define('N4', 10);
226 
227  // -----------------------------------------------------
228 
229  // Optimization settings
230 
234  define('QR_FIND_BEST_MASK', true);
235 
239  define('QR_FIND_FROM_RANDOM', 2);
240 
244  define('QR_DEFAULT_MASK', 2);
245 
246  // -----------------------------------------------------
247 
248 } // end of definitions
249 
250 // #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
251 
252 // for compatibility with PHP4
253 if (!function_exists('str_split')) {
260  function str_split($string, $split_length=1) {
261  if ((strlen($string) > $split_length) OR (!$split_length)) {
262  do {
263  $c = strlen($string);
264  $parts[] = substr($string, 0, $split_length);
265  $string = substr($string, $split_length);
266  } while ($string !== false);
267  } else {
268  $parts = array($string);
269  }
270  return $parts;
271  }
272 }
273 
274 // #####################################################
275 
291 class QRcode {
292 
297  protected $barcode_array = array();
298 
303  protected $version = 0;
304 
309  protected $level = QR_ECLEVEL_L;
310 
315  protected $hint = QR_MODE_8B;
316 
321  protected $casesensitive = true;
322 
327  protected $structured = 0;
328 
333  protected $data;
334 
335  // FrameFiller
336 
341  protected $width;
342 
347  protected $frame;
348 
353  protected $x;
354 
359  protected $y;
360 
365  protected $dir;
366 
371  protected $bit;
372 
373  // ---- QRrawcode ----
374 
379  protected $datacode = array();
380 
385  protected $ecccode = array();
386 
391  protected $blocks;
392 
397  protected $rsblocks = array(); //of RSblock
398 
403  protected $count;
404 
409  protected $dataLength;
410 
415  protected $eccLength;
416 
421  protected $b1;
422 
423  // ---- QRmask ----
424 
429  protected $runLength = array();
430 
431  // ---- QRsplit ----
432 
437  protected $dataStr = '';
438 
443  protected $items;
444 
445  // Reed-Solomon items
446 
451  protected $rsitems = array();
452 
457  protected $frames = array();
458 
463  protected $anTable = array(
464  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
465  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
466  36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43, //
467  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1, //
468  -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, //
469  25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, //
470  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, //
471  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 //
472  );
473 
479  protected $capacity = array(
480  array( 0, 0, 0, array( 0, 0, 0, 0)), //
481  array( 21, 26, 0, array( 7, 10, 13, 17)), // 1
482  array( 25, 44, 7, array( 10, 16, 22, 28)), //
483  array( 29, 70, 7, array( 15, 26, 36, 44)), //
484  array( 33, 100, 7, array( 20, 36, 52, 64)), //
485  array( 37, 134, 7, array( 26, 48, 72, 88)), // 5
486  array( 41, 172, 7, array( 36, 64, 96, 112)), //
487  array( 45, 196, 0, array( 40, 72, 108, 130)), //
488  array( 49, 242, 0, array( 48, 88, 132, 156)), //
489  array( 53, 292, 0, array( 60, 110, 160, 192)), //
490  array( 57, 346, 0, array( 72, 130, 192, 224)), // 10
491  array( 61, 404, 0, array( 80, 150, 224, 264)), //
492  array( 65, 466, 0, array( 96, 176, 260, 308)), //
493  array( 69, 532, 0, array( 104, 198, 288, 352)), //
494  array( 73, 581, 3, array( 120, 216, 320, 384)), //
495  array( 77, 655, 3, array( 132, 240, 360, 432)), // 15
496  array( 81, 733, 3, array( 144, 280, 408, 480)), //
497  array( 85, 815, 3, array( 168, 308, 448, 532)), //
498  array( 89, 901, 3, array( 180, 338, 504, 588)), //
499  array( 93, 991, 3, array( 196, 364, 546, 650)), //
500  array( 97, 1085, 3, array( 224, 416, 600, 700)), // 20
501  array(101, 1156, 4, array( 224, 442, 644, 750)), //
502  array(105, 1258, 4, array( 252, 476, 690, 816)), //
503  array(109, 1364, 4, array( 270, 504, 750, 900)), //
504  array(113, 1474, 4, array( 300, 560, 810, 960)), //
505  array(117, 1588, 4, array( 312, 588, 870, 1050)), // 25
506  array(121, 1706, 4, array( 336, 644, 952, 1110)), //
507  array(125, 1828, 4, array( 360, 700, 1020, 1200)), //
508  array(129, 1921, 3, array( 390, 728, 1050, 1260)), //
509  array(133, 2051, 3, array( 420, 784, 1140, 1350)), //
510  array(137, 2185, 3, array( 450, 812, 1200, 1440)), // 30
511  array(141, 2323, 3, array( 480, 868, 1290, 1530)), //
512  array(145, 2465, 3, array( 510, 924, 1350, 1620)), //
513  array(149, 2611, 3, array( 540, 980, 1440, 1710)), //
514  array(153, 2761, 3, array( 570, 1036, 1530, 1800)), //
515  array(157, 2876, 0, array( 570, 1064, 1590, 1890)), // 35
516  array(161, 3034, 0, array( 600, 1120, 1680, 1980)), //
517  array(165, 3196, 0, array( 630, 1204, 1770, 2100)), //
518  array(169, 3362, 0, array( 660, 1260, 1860, 2220)), //
519  array(173, 3532, 0, array( 720, 1316, 1950, 2310)), //
520  array(177, 3706, 0, array( 750, 1372, 2040, 2430)) // 40
521  );
522 
527  protected $lengthTableBits = array(
528  array(10, 12, 14),
529  array( 9, 11, 13),
530  array( 8, 16, 16),
531  array( 8, 10, 12)
532  );
533 
539  protected $eccTable = array(
540  array(array( 0, 0), array( 0, 0), array( 0, 0), array( 0, 0)), //
541  array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), // 1
542  array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), //
543  array(array( 1, 0), array( 1, 0), array( 2, 0), array( 2, 0)), //
544  array(array( 1, 0), array( 2, 0), array( 2, 0), array( 4, 0)), //
545  array(array( 1, 0), array( 2, 0), array( 2, 2), array( 2, 2)), // 5
546  array(array( 2, 0), array( 4, 0), array( 4, 0), array( 4, 0)), //
547  array(array( 2, 0), array( 4, 0), array( 2, 4), array( 4, 1)), //
548  array(array( 2, 0), array( 2, 2), array( 4, 2), array( 4, 2)), //
549  array(array( 2, 0), array( 3, 2), array( 4, 4), array( 4, 4)), //
550  array(array( 2, 2), array( 4, 1), array( 6, 2), array( 6, 2)), // 10
551  array(array( 4, 0), array( 1, 4), array( 4, 4), array( 3, 8)), //
552  array(array( 2, 2), array( 6, 2), array( 4, 6), array( 7, 4)), //
553  array(array( 4, 0), array( 8, 1), array( 8, 4), array(12, 4)), //
554  array(array( 3, 1), array( 4, 5), array(11, 5), array(11, 5)), //
555  array(array( 5, 1), array( 5, 5), array( 5, 7), array(11, 7)), // 15
556  array(array( 5, 1), array( 7, 3), array(15, 2), array( 3, 13)), //
557  array(array( 1, 5), array(10, 1), array( 1, 15), array( 2, 17)), //
558  array(array( 5, 1), array( 9, 4), array(17, 1), array( 2, 19)), //
559  array(array( 3, 4), array( 3, 11), array(17, 4), array( 9, 16)), //
560  array(array( 3, 5), array( 3, 13), array(15, 5), array(15, 10)), // 20
561  array(array( 4, 4), array(17, 0), array(17, 6), array(19, 6)), //
562  array(array( 2, 7), array(17, 0), array( 7, 16), array(34, 0)), //
563  array(array( 4, 5), array( 4, 14), array(11, 14), array(16, 14)), //
564  array(array( 6, 4), array( 6, 14), array(11, 16), array(30, 2)), //
565  array(array( 8, 4), array( 8, 13), array( 7, 22), array(22, 13)), // 25
566  array(array(10, 2), array(19, 4), array(28, 6), array(33, 4)), //
567  array(array( 8, 4), array(22, 3), array( 8, 26), array(12, 28)), //
568  array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)), //
569  array(array( 7, 7), array(21, 7), array( 1, 37), array(19, 26)), //
570  array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), // 30
571  array(array(13, 3), array( 2, 29), array(42, 1), array(23, 28)), //
572  array(array(17, 0), array(10, 23), array(10, 35), array(19, 35)), //
573  array(array(17, 1), array(14, 21), array(29, 19), array(11, 46)), //
574  array(array(13, 6), array(14, 23), array(44, 7), array(59, 1)), //
575  array(array(12, 7), array(12, 26), array(39, 14), array(22, 41)), // 35
576  array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)), //
577  array(array(17, 4), array(29, 14), array(49, 10), array(24, 46)), //
578  array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)), //
579  array(array(20, 4), array(40, 7), array(43, 22), array(10, 67)), //
580  array(array(19, 6), array(18, 31), array(34, 34), array(20, 61)) // 40
581  );
582 
589  protected $alignmentPattern = array(
590  array( 0, 0),
591  array( 0, 0), array(18, 0), array(22, 0), array(26, 0), array(30, 0), // 1- 5
592  array(34, 0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), // 6-10
593  array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), // 11-15
594  array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), // 16-20
595  array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), // 21-25
596  array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), // 26-30
597  array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), // 31-35
598  array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58) // 35-40
599  );
600 
607  protected $versionPattern = array(
608  0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d, //
609  0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9, //
610  0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75, //
611  0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64, //
612  0x27541, 0x28c69
613  );
614 
619  protected $formatInfo = array(
620  array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976), //
621  array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0), //
622  array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed), //
623  array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b) //
624  );
625 
626 
627  // -------------------------------------------------
628  // -------------------------------------------------
629 
630 
639  public function __construct($code, $eclevel = 'L') {
640  $barcode_array = array();
641  if ((is_null($code)) OR ($code == '\0') OR ($code == '')) {
642  return false;
643  }
644  // set error correction level
645  $this->level = array_search($eclevel, array('L', 'M', 'Q', 'H'));
646  if ($this->level === false) {
647  $this->level = QR_ECLEVEL_L;
648  }
649  if (($this->hint != QR_MODE_8B) AND ($this->hint != QR_MODE_KJ)) {
650  return false;
651  }
652  if (($this->version < 0) OR ($this->version > QRSPEC_VERSION_MAX)) {
653  return false;
654  }
655  $this->items = array();
656  $this->encodeString($code);
657  if (is_null($this->data)) {
658  return false;
659  }
660  $qrTab = $this->binarize($this->data);
661  $size = count($qrTab);
662  $barcode_array['num_rows'] = $size;
663  $barcode_array['num_cols'] = $size;
664  $barcode_array['bcode'] = array();
665  foreach ($qrTab as $line) {
666  $arrAdd = array();
667  foreach (str_split($line) as $char) {
668  $arrAdd[] = ($char=='1')?1:0;
669  }
670  $barcode_array['bcode'][] = $arrAdd;
671  }
672  $this->barcode_array = $barcode_array;
673  }
674 
680  public function getBarcodeArray() {
681  return $this->barcode_array;
682  }
683 
689  protected function binarize($frame) {
690  $len = count($frame);
691  // the frame is square (width = height)
692  foreach ($frame as &$frameLine) {
693  for ($i=0; $i<$len; $i++) {
694  $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
695  }
696  }
697  return $frame;
698  }
699 
704  protected function encodeString($string) {
705  $this->dataStr = $string;
706  if (!$this->casesensitive) {
707  $this->toUpper();
708  }
709  $ret = $this->splitString();
710  if ($ret < 0) {
711  return NULL;
712  }
713  $this->encodeMask(-1);
714  }
715 
720  protected function encodeMask($mask) {
721  $spec = array(0, 0, 0, 0, 0);
722  $this->datacode = $this->getByteStream($this->items);
723 
724  if (is_null($this->datacode)) {
725  return NULL;
726  }
727  $spec = $this->getEccSpec($this->version, $this->level, $spec);
728  $this->b1 = $this->rsBlockNum1($spec);
729  $this->dataLength = $this->rsDataLength($spec);
730  $this->eccLength = $this->rsEccLength($spec);
731  $this->ecccode = array_fill(0, $this->eccLength, 0);
732  $this->blocks = $this->rsBlockNum($spec);
733  $ret = $this->init($spec);
734  if ($ret < 0) {
735  return NULL;
736  }
737  $this->count = 0;
738  $this->width = $this->getWidth($this->version);
739  $this->frame = $this->newFrame($this->version);
740  $this->x = $this->width - 1;
741  $this->y = $this->width - 1;
742  $this->dir = -1;
743  $this->bit = -1;
744  // inteleaved data and ecc codes
745  for ($i=0; $i < ($this->dataLength + $this->eccLength); $i++) {
746  $code = $this->getCode();
747  $bit = 0x80;
748  for ($j=0; $j<8; $j++) {
749  $addr = $this->getNextPosition();
750  $this->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
751  $bit = $bit >> 1;
752  }
753  }
754  // remainder bits
755  $j = $this->getRemainder($this->version);
756  for ($i=0; $i<$j; $i++) {
757  $addr = $this->getNextPosition();
758  $this->setFrameAt($addr, 0x02);
759  }
760  // masking
761  $this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
762  if ($mask < 0) {
763  if (QR_FIND_BEST_MASK) {
764  $masked = $this->mask($this->width, $this->frame, $this->level);
765  } else {
766  $masked = $this->makeMask($this->width, $this->frame, (intval(QR_DEFAULT_MASK) % 8), $this->level);
767  }
768  } else {
769  $masked = $this->makeMask($this->width, $this->frame, $mask, $this->level);
770  }
771  if ($masked == NULL) {
772  return NULL;
773  }
774  $this->data = $masked;
775  }
776 
777  // - - - - - - - - - - - - - - - - - - - - - - - - -
778 
779  // FrameFiller
780 
786  protected function setFrameAt($at, $val) {
787  $this->frame[$at['y']][$at['x']] = chr($val);
788  }
789 
795  protected function getFrameAt($at) {
796  return ord($this->frame[$at['y']][$at['x']]);
797  }
798 
803  protected function getNextPosition() {
804  do {
805  if ($this->bit == -1) {
806  $this->bit = 0;
807  return array('x'=>$this->x, 'y'=>$this->y);
808  }
809  $x = $this->x;
810  $y = $this->y;
811  $w = $this->width;
812  if ($this->bit == 0) {
813  $x--;
814  $this->bit++;
815  } else {
816  $x++;
817  $y += $this->dir;
818  $this->bit--;
819  }
820  if ($this->dir < 0) {
821  if ($y < 0) {
822  $y = 0;
823  $x -= 2;
824  $this->dir = 1;
825  if ($x == 6) {
826  $x--;
827  $y = 9;
828  }
829  }
830  } else {
831  if ($y == $w) {
832  $y = $w - 1;
833  $x -= 2;
834  $this->dir = -1;
835  if ($x == 6) {
836  $x--;
837  $y -= 8;
838  }
839  }
840  }
841  if (($x < 0) OR ($y < 0)) {
842  return NULL;
843  }
844  $this->x = $x;
845  $this->y = $y;
846  } while(ord($this->frame[$y][$x]) & 0x80);
847  return array('x'=>$x, 'y'=>$y);
848  }
849 
850  // - - - - - - - - - - - - - - - - - - - - - - - - -
851 
852  // QRrawcode
853 
859  protected function init($spec) {
860  $dl = $this->rsDataCodes1($spec);
861  $el = $this->rsEccCodes1($spec);
862  $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
863  $blockNo = 0;
864  $dataPos = 0;
865  $eccPos = 0;
866  $endfor = $this->rsBlockNum1($spec);
867  for ($i=0; $i < $endfor; ++$i) {
868  $ecc = array_slice($this->ecccode, $eccPos);
869  $this->rsblocks[$blockNo] = array();
870  $this->rsblocks[$blockNo]['dataLength'] = $dl;
871  $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
872  $this->rsblocks[$blockNo]['eccLength'] = $el;
873  $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
874  $this->rsblocks[$blockNo]['ecc'] = $ecc;
875  $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
876  $dataPos += $dl;
877  $eccPos += $el;
878  $blockNo++;
879  }
880  if ($this->rsBlockNum2($spec) == 0) {
881  return 0;
882  }
883  $dl = $this->rsDataCodes2($spec);
884  $el = $this->rsEccCodes2($spec);
885  $rs = $this->init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
886  if ($rs == NULL) {
887  return -1;
888  }
889  $endfor = $this->rsBlockNum2($spec);
890  for ($i=0; $i < $endfor; ++$i) {
891  $ecc = array_slice($this->ecccode, $eccPos);
892  $this->rsblocks[$blockNo] = array();
893  $this->rsblocks[$blockNo]['dataLength'] = $dl;
894  $this->rsblocks[$blockNo]['data'] = array_slice($this->datacode, $dataPos);
895  $this->rsblocks[$blockNo]['eccLength'] = $el;
896  $ecc = $this->encode_rs_char($rs, $this->rsblocks[$blockNo]['data'], $ecc);
897  $this->rsblocks[$blockNo]['ecc'] = $ecc;
898  $this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);
899  $dataPos += $dl;
900  $eccPos += $el;
901  $blockNo++;
902  }
903  return 0;
904  }
905 
910  protected function getCode() {
911  if ($this->count < $this->dataLength) {
912  $row = $this->count % $this->blocks;
913  $col = $this->count / $this->blocks;
914  if ($col >= $this->rsblocks[0]['dataLength']) {
915  $row += $this->b1;
916  }
917  $ret = $this->rsblocks[$row]['data'][$col];
918  } elseif ($this->count < $this->dataLength + $this->eccLength) {
919  $row = ($this->count - $this->dataLength) % $this->blocks;
920  $col = ($this->count - $this->dataLength) / $this->blocks;
921  $ret = $this->rsblocks[$row]['ecc'][$col];
922  } else {
923  return 0;
924  }
925  $this->count++;
926  return $ret;
927  }
928 
929  // - - - - - - - - - - - - - - - - - - - - - - - - -
930 
931  // QRmask
932 
941  protected function writeFormatInformation($width, &$frame, $mask, $level) {
942  $blacks = 0;
943  $format = $this->getFormatInfo($mask, $level);
944  for ($i=0; $i<8; ++$i) {
945  if ($format & 1) {
946  $blacks += 2;
947  $v = 0x85;
948  } else {
949  $v = 0x84;
950  }
951  $frame[8][$width - 1 - $i] = chr($v);
952  if ($i < 6) {
953  $frame[$i][8] = chr($v);
954  } else {
955  $frame[$i + 1][8] = chr($v);
956  }
957  $format = $format >> 1;
958  }
959  for ($i=0; $i<7; ++$i) {
960  if ($format & 1) {
961  $blacks += 2;
962  $v = 0x85;
963  } else {
964  $v = 0x84;
965  }
966  $frame[$width - 7 + $i][8] = chr($v);
967  if ($i == 0) {
968  $frame[8][7] = chr($v);
969  } else {
970  $frame[8][6 - $i] = chr($v);
971  }
972  $format = $format >> 1;
973  }
974  return $blacks;
975  }
976 
983  protected function mask0($x, $y) {
984  return ($x + $y) & 1;
985  }
986 
993  protected function mask1($x, $y) {
994  return ($y & 1);
995  }
996 
1003  protected function mask2($x, $y) {
1004  return ($x % 3);
1005  }
1006 
1013  protected function mask3($x, $y) {
1014  return ($x + $y) % 3;
1015  }
1016 
1023  protected function mask4($x, $y) {
1024  return (((int)($y / 2)) + ((int)($x / 3))) & 1;
1025  }
1026 
1033  protected function mask5($x, $y) {
1034  return (($x * $y) & 1) + ($x * $y) % 3;
1035  }
1036 
1043  protected function mask6($x, $y) {
1044  return ((($x * $y) & 1) + ($x * $y) % 3) & 1;
1045  }
1046 
1053  protected function mask7($x, $y) {
1054  return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;
1055  }
1056 
1064  protected function generateMaskNo($maskNo, $width, $frame) {
1065  $bitMask = array_fill(0, $width, array_fill(0, $width, 0));
1066  for ($y=0; $y<$width; ++$y) {
1067  for ($x=0; $x<$width; ++$x) {
1068  if (ord($frame[$y][$x]) & 0x80) {
1069  $bitMask[$y][$x] = 0;
1070  } else {
1071  $maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);
1072  $bitMask[$y][$x] = ($maskFunc == 0)?1:0;
1073  }
1074  }
1075  }
1076  return $bitMask;
1077  }
1078 
1088  protected function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly=false) {
1089  $b = 0;
1090  $bitMask = array();
1091  $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
1092  if ($maskGenOnly) {
1093  return;
1094  }
1095  $d = $s;
1096  for ($y=0; $y<$width; ++$y) {
1097  for ($x=0; $x<$width; ++$x) {
1098  if ($bitMask[$y][$x] == 1) {
1099  $d[$y][$x] = chr(ord($s[$y][$x]) ^ ((int)($bitMask[$y][$x])));
1100  }
1101  $b += (int)(ord($d[$y][$x]) & 1);
1102  }
1103  }
1104  return $b;
1105  }
1106 
1115  protected function makeMask($width, $frame, $maskNo, $level) {
1116  $masked = array_fill(0, $width, str_repeat("\0", $width));
1117  $this->makeMaskNo($maskNo, $width, $frame, $masked);
1118  $this->writeFormatInformation($width, $masked, $maskNo, $level);
1119  return $masked;
1120  }
1121 
1127  protected function calcN1N3($length) {
1128  $demerit = 0;
1129  for ($i=0; $i<$length; ++$i) {
1130  if ($this->runLength[$i] >= 5) {
1131  $demerit += (N1 + ($this->runLength[$i] - 5));
1132  }
1133  if ($i & 1) {
1134  if (($i >= 3) AND ($i < ($length-2)) AND ($this->runLength[$i] % 3 == 0)) {
1135  $fact = (int)($this->runLength[$i] / 3);
1136  if (($this->runLength[$i-2] == $fact)
1137  AND ($this->runLength[$i-1] == $fact)
1138  AND ($this->runLength[$i+1] == $fact)
1139  AND ($this->runLength[$i+2] == $fact)) {
1140  if (($this->runLength[$i-3] < 0) OR ($this->runLength[$i-3] >= (4 * $fact))) {
1141  $demerit += N3;
1142  } elseif ((($i+3) >= $length) OR ($this->runLength[$i+3] >= (4 * $fact))) {
1143  $demerit += N3;
1144  }
1145  }
1146  }
1147  }
1148  }
1149  return $demerit;
1150  }
1151 
1158  protected function evaluateSymbol($width, $frame) {
1159  $head = 0;
1160  $demerit = 0;
1161  for ($y=0; $y<$width; ++$y) {
1162  $head = 0;
1163  $this->runLength[0] = 1;
1164  $frameY = $frame[$y];
1165  if ($y > 0) {
1166  $frameYM = $frame[$y-1];
1167  }
1168  for ($x=0; $x<$width; ++$x) {
1169  if (($x > 0) AND ($y > 0)) {
1170  $b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);
1171  $w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);
1172  if (($b22 | ($w22 ^ 1)) & 1) {
1173  $demerit += N2;
1174  }
1175  }
1176  if (($x == 0) AND (ord($frameY[$x]) & 1)) {
1177  $this->runLength[0] = -1;
1178  $head = 1;
1179  $this->runLength[$head] = 1;
1180  } elseif ($x > 0) {
1181  if ((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {
1182  $head++;
1183  $this->runLength[$head] = 1;
1184  } else {
1185  $this->runLength[$head]++;
1186  }
1187  }
1188  }
1189  $demerit += $this->calcN1N3($head+1);
1190  }
1191  for ($x=0; $x<$width; ++$x) {
1192  $head = 0;
1193  $this->runLength[0] = 1;
1194  for ($y=0; $y<$width; ++$y) {
1195  if (($y == 0) AND (ord($frame[$y][$x]) & 1)) {
1196  $this->runLength[0] = -1;
1197  $head = 1;
1198  $this->runLength[$head] = 1;
1199  } elseif ($y > 0) {
1200  if ((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {
1201  $head++;
1202  $this->runLength[$head] = 1;
1203  } else {
1204  $this->runLength[$head]++;
1205  }
1206  }
1207  }
1208  $demerit += $this->calcN1N3($head+1);
1209  }
1210  return $demerit;
1211  }
1212 
1220  protected function mask($width, $frame, $level) {
1221  $minDemerit = PHP_INT_MAX;
1222  $bestMaskNum = 0;
1223  $bestMask = array();
1224  $checked_masks = array(0, 1, 2, 3, 4, 5, 6, 7);
1225  if (QR_FIND_FROM_RANDOM !== false) {
1226  $howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
1227  for ($i = 0; $i < $howManuOut; ++$i) {
1228  $remPos = rand (0, count($checked_masks)-1);
1229  unset($checked_masks[$remPos]);
1230  $checked_masks = array_values($checked_masks);
1231  }
1232  }
1233  $bestMask = $frame;
1234  foreach ($checked_masks as $i) {
1235  $mask = array_fill(0, $width, str_repeat("\0", $width));
1236  $demerit = 0;
1237  $blacks = 0;
1238  $blacks = $this->makeMaskNo($i, $width, $frame, $mask);
1239  $blacks += $this->writeFormatInformation($width, $mask, $i, $level);
1240  $blacks = (int)(100 * $blacks / ($width * $width));
1241  $demerit = (int)((int)(abs($blacks - 50) / 5) * N4);
1242  $demerit += $this->evaluateSymbol($width, $mask);
1243  if ($demerit < $minDemerit) {
1244  $minDemerit = $demerit;
1245  $bestMask = $mask;
1246  $bestMaskNum = $i;
1247  }
1248  }
1249  return $bestMask;
1250  }
1251 
1252  // - - - - - - - - - - - - - - - - - - - - - - - - -
1253 
1254  // QRsplit
1255 
1262  protected function isdigitat($str, $pos) {
1263  if ($pos >= strlen($str)) {
1264  return false;
1265  }
1266  return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));
1267  }
1268 
1275  protected function isalnumat($str, $pos) {
1276  if ($pos >= strlen($str)) {
1277  return false;
1278  }
1279  return ($this->lookAnTable(ord($str[$pos])) >= 0);
1280  }
1281 
1287  protected function identifyMode($pos) {
1288  if ($pos >= strlen($this->dataStr)) {
1289  return QR_MODE_NL;
1290  }
1291  $c = $this->dataStr[$pos];
1292  if ($this->isdigitat($this->dataStr, $pos)) {
1293  return QR_MODE_NM;
1294  } elseif ($this->isalnumat($this->dataStr, $pos)) {
1295  return QR_MODE_AN;
1296  } elseif ($this->hint == QR_MODE_KJ) {
1297  if ($pos+1 < strlen($this->dataStr)) {
1298  $d = $this->dataStr[$pos+1];
1299  $word = (ord($c) << 8) | ord($d);
1300  if (($word >= 0x8140 && $word <= 0x9ffc) OR ($word >= 0xe040 && $word <= 0xebbf)) {
1301  return QR_MODE_KJ;
1302  }
1303  }
1304  }
1305  return QR_MODE_8B;
1306  }
1307 
1312  protected function eatNum() {
1313  $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1314  $p = 0;
1315  while($this->isdigitat($this->dataStr, $p)) {
1316  $p++;
1317  }
1318  $run = $p;
1319  $mode = $this->identifyMode($p);
1320  if ($mode == QR_MODE_8B) {
1321  $dif = $this->estimateBitsModeNum($run) + 4 + $ln
1322  + $this->estimateBitsMode8(1) // + 4 + l8
1323  - $this->estimateBitsMode8($run + 1); // - 4 - l8
1324  if ($dif > 0) {
1325  return $this->eat8();
1326  }
1327  }
1328  if ($mode == QR_MODE_AN) {
1329  $dif = $this->estimateBitsModeNum($run) + 4 + $ln
1330  + $this->estimateBitsModeAn(1) // + 4 + la
1331  - $this->estimateBitsModeAn($run + 1);// - 4 - la
1332  if ($dif > 0) {
1333  return $this->eatAn();
1334  }
1335  }
1336  $this->items = $this->appendNewInputItem($this->items, QR_MODE_NM, $run, str_split($this->dataStr));
1337  return $run;
1338  }
1339 
1344  protected function eatAn() {
1345  $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
1346  $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1347  $p =1 ;
1348  while($this->isalnumat($this->dataStr, $p)) {
1349  if ($this->isdigitat($this->dataStr, $p)) {
1350  $q = $p;
1351  while($this->isdigitat($this->dataStr, $q)) {
1352  $q++;
1353  }
1354  $dif = $this->estimateBitsModeAn($p) // + 4 + la
1355  + $this->estimateBitsModeNum($q - $p) + 4 + $ln
1356  - $this->estimateBitsModeAn($q); // - 4 - la
1357  if ($dif < 0) {
1358  break;
1359  } else {
1360  $p = $q;
1361  }
1362  } else {
1363  $p++;
1364  }
1365  }
1366  $run = $p;
1367  if (!$this->isalnumat($this->dataStr, $p)) {
1368  $dif = $this->estimateBitsModeAn($run) + 4 + $la
1369  + $this->estimateBitsMode8(1) // + 4 + l8
1370  - $this->estimateBitsMode8($run + 1); // - 4 - l8
1371  if ($dif > 0) {
1372  return $this->eat8();
1373  }
1374  }
1375  $this->items = $this->appendNewInputItem($this->items, QR_MODE_AN, $run, str_split($this->dataStr));
1376  return $run;
1377  }
1378 
1383  protected function eatKanji() {
1384  $p = 0;
1385  while($this->identifyMode($p) == QR_MODE_KJ) {
1386  $p += 2;
1387  }
1388  $this->items = $this->appendNewInputItem($this->items, QR_MODE_KJ, $p, str_split($this->dataStr));
1389  return $run;
1390  }
1391 
1396  protected function eat8() {
1397  $la = $this->lengthIndicator(QR_MODE_AN, $this->version);
1398  $ln = $this->lengthIndicator(QR_MODE_NM, $this->version);
1399  $p = 1;
1400  $dataStrLen = strlen($this->dataStr);
1401  while($p < $dataStrLen) {
1402  $mode = $this->identifyMode($p);
1403  if ($mode == QR_MODE_KJ) {
1404  break;
1405  }
1406  if ($mode == QR_MODE_NM) {
1407  $q = $p;
1408  while($this->isdigitat($this->dataStr, $q)) {
1409  $q++;
1410  }
1411  $dif = $this->estimateBitsMode8($p) // + 4 + l8
1412  + $this->estimateBitsModeNum($q - $p) + 4 + $ln
1413  - $this->estimateBitsMode8($q); // - 4 - l8
1414  if ($dif < 0) {
1415  break;
1416  } else {
1417  $p = $q;
1418  }
1419  } elseif ($mode == QR_MODE_AN) {
1420  $q = $p;
1421  while($this->isalnumat($this->dataStr, $q)) {
1422  $q++;
1423  }
1424  $dif = $this->estimateBitsMode8($p) // + 4 + l8
1425  + $this->estimateBitsModeAn($q - $p) + 4 + $la
1426  - $this->estimateBitsMode8($q); // - 4 - l8
1427  if ($dif < 0) {
1428  break;
1429  } else {
1430  $p = $q;
1431  }
1432  } else {
1433  $p++;
1434  }
1435  }
1436  $run = $p;
1437  $this->items = $this->appendNewInputItem($this->items, QR_MODE_8B, $run, str_split($this->dataStr));
1438  return $run;
1439  }
1440 
1445  protected function splitString() {
1446  while (strlen($this->dataStr) > 0) {
1447  $mode = $this->identifyMode(0);
1448  switch ($mode) {
1449  case QR_MODE_NM: {
1450  $length = $this->eatNum();
1451  break;
1452  }
1453  case QR_MODE_AN: {
1454  $length = $this->eatAn();
1455  break;
1456  }
1457  case QR_MODE_KJ: {
1458  if ($hint == QR_MODE_KJ) {
1459  $length = $this->eatKanji();
1460  } else {
1461  $length = $this->eat8();
1462  }
1463  break;
1464  }
1465  default: {
1466  $length = $this->eat8();
1467  break;
1468  }
1469  }
1470  if ($length == 0) {
1471  return 0;
1472  }
1473  if ($length < 0) {
1474  return -1;
1475  }
1476  $this->dataStr = substr($this->dataStr, $length);
1477  }
1478  return 0;
1479  }
1480 
1484  protected function toUpper() {
1485  $stringLen = strlen($this->dataStr);
1486  $p = 0;
1487  while ($p < $stringLen) {
1488  $mode = $this->identifyMode(substr($this->dataStr, $p), $this->hint);
1489  if ($mode == QR_MODE_KJ) {
1490  $p += 2;
1491  } else {
1492  if ((ord($this->dataStr[$p]) >= ord('a')) AND (ord($this->dataStr[$p]) <= ord('z'))) {
1493  $this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);
1494  }
1495  $p++;
1496  }
1497  }
1498  return $this->dataStr;
1499  }
1500 
1501  // - - - - - - - - - - - - - - - - - - - - - - - - -
1502 
1503  // QRinputItem
1504 
1513  protected function newInputItem($mode, $size, $data, $bstream=null) {
1514  $setData = array_slice($data, 0, $size);
1515  if (count($setData) < $size) {
1516  $setData = array_merge($setData, array_fill(0, ($size - count($setData)), 0));
1517  }
1518  if (!$this->check($mode, $size, $setData)) {
1519  return NULL;
1520  }
1521  $inputitem = array();
1522  $inputitem['mode'] = $mode;
1523  $inputitem['size'] = $size;
1524  $inputitem['data'] = $setData;
1525  $inputitem['bstream'] = $bstream;
1526  return $inputitem;
1527  }
1528 
1535  protected function encodeModeNum($inputitem, $version) {
1536  $words = (int)($inputitem['size'] / 3);
1537  $inputitem['bstream'] = array();
1538  $val = 0x1;
1539  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
1540  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_NM, $version), $inputitem['size']);
1541  for ($i=0; $i < $words; ++$i) {
1542  $val = (ord($inputitem['data'][$i*3 ]) - ord('0')) * 100;
1543  $val += (ord($inputitem['data'][$i*3+1]) - ord('0')) * 10;
1544  $val += (ord($inputitem['data'][$i*3+2]) - ord('0'));
1545  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 10, $val);
1546  }
1547  if ($inputitem['size'] - $words * 3 == 1) {
1548  $val = ord($inputitem['data'][$words*3]) - ord('0');
1549  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, $val);
1550  } elseif (($inputitem['size'] - ($words * 3)) == 2) {
1551  $val = (ord($inputitem['data'][$words*3 ]) - ord('0')) * 10;
1552  $val += (ord($inputitem['data'][$words*3+1]) - ord('0'));
1553  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 7, $val);
1554  }
1555  return $inputitem;
1556  }
1557 
1564  protected function encodeModeAn($inputitem, $version) {
1565  $words = (int)($inputitem['size'] / 2);
1566  $inputitem['bstream'] = array();
1567  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x02);
1568  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_AN, $version), $inputitem['size']);
1569  for ($i=0; $i < $words; ++$i) {
1570  $val = (int)($this->lookAnTable(ord($inputitem['data'][$i*2])) * 45);
1571  $val += (int)($this->lookAnTable(ord($inputitem['data'][($i*2)+1])));
1572  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 11, $val);
1573  }
1574  if ($inputitem['size'] & 1) {
1575  $val = $this->lookAnTable(ord($inputitem['data'][($words * 2)]));
1576  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 6, $val);
1577  }
1578  return $inputitem;
1579  }
1580 
1587  protected function encodeMode8($inputitem, $version) {
1588  $inputitem['bstream'] = array();
1589  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x4);
1590  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_8B, $version), $inputitem['size']);
1591  for ($i=0; $i < $inputitem['size']; ++$i) {
1592  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][$i]));
1593  }
1594  return $inputitem;
1595  }
1596 
1603  protected function encodeModeKanji($inputitem, $version) {
1604  $inputitem['bstream'] = array();
1605  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x8);
1606  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], $this->lengthIndicator(QR_MODE_KJ, $version), (int)($inputitem['size'] / 2));
1607  for ($i=0; $i<$inputitem['size']; $i+=2) {
1608  $val = (ord($inputitem['data'][$i]) << 8) | ord($inputitem['data'][$i+1]);
1609  if ($val <= 0x9ffc) {
1610  $val -= 0x8140;
1611  } else {
1612  $val -= 0xc140;
1613  }
1614  $h = ($val >> 8) * 0xc0;
1615  $val = ($val & 0xff) + $h;
1616  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 13, $val);
1617  }
1618  return $inputitem;
1619  }
1620 
1626  protected function encodeModeStructure($inputitem) {
1627  $inputitem['bstream'] = array();
1628  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, 0x03);
1629  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][1]) - 1);
1630  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 4, ord($inputitem['data'][0]) - 1);
1631  $inputitem['bstream'] = $this->appendNum($inputitem['bstream'], 8, ord($inputitem['data'][2]));
1632  return $inputitem;
1633  }
1634 
1641  protected function encodeBitStream($inputitem, $version) {
1642  $inputitem['bstream'] = array();
1643  $words = $this->maximumWords($inputitem['mode'], $version);
1644  if ($inputitem['size'] > $words) {
1645  $st1 = $this->newInputItem($inputitem['mode'], $words, $inputitem['data']);
1646  $st2 = $this->newInputItem($inputitem['mode'], $inputitem['size'] - $words, array_slice($inputitem['data'], $words));
1647  $st1 = $this->encodeBitStream($st1, $version);
1648  $st2 = $this->encodeBitStream($st2, $version);
1649  $inputitem['bstream'] = array();
1650  $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st1['bstream']);
1651  $inputitem['bstream'] = $this->appendBitstream($inputitem['bstream'], $st2['bstream']);
1652  } else {
1653  switch($inputitem['mode']) {
1654  case QR_MODE_NM: {
1655  $inputitem = $this->encodeModeNum($inputitem, $version);
1656  break;
1657  }
1658  case QR_MODE_AN: {
1659  $inputitem = $this->encodeModeAn($inputitem, $version);
1660  break;
1661  }
1662  case QR_MODE_8B: {
1663  $inputitem = $this->encodeMode8($inputitem, $version);
1664  break;
1665  }
1666  case QR_MODE_KJ: {
1667  $inputitem = $this->encodeModeKanji($inputitem, $version);
1668  break;
1669  }
1670  case QR_MODE_ST: {
1671  $inputitem = $this->encodeModeStructure($inputitem);
1672  break;
1673  }
1674  default: {
1675  break;
1676  }
1677  }
1678  }
1679  return $inputitem;
1680  }
1681 
1682  // - - - - - - - - - - - - - - - - - - - - - - - - -
1683 
1684  // QRinput
1685 
1696  protected function appendNewInputItem($items, $mode, $size, $data) {
1697  $newitem = $this->newInputItem($mode, $size, $data);
1698  if (!empty($newitem)) {
1699  $items[] = $newitem;
1700  }
1701  return $items;
1702  }
1703 
1712  protected function insertStructuredAppendHeader($items, $size, $index, $parity) {
1713  if ($size > MAX_STRUCTURED_SYMBOLS) {
1714  return -1;
1715  }
1716  if (($index <= 0) OR ($index > MAX_STRUCTURED_SYMBOLS)) {
1717  return -1;
1718  }
1719  $buf = array($size, $index, $parity);
1720  $entry = $this->newInputItem(QR_MODE_ST, 3, buf);
1721  array_unshift($items, $entry);
1722  return $items;
1723  }
1724 
1730  protected function calcParity($items) {
1731  $parity = 0;
1732  foreach ($items as $item) {
1733  if ($item['mode'] != QR_MODE_ST) {
1734  for ($i=$item['size']-1; $i>=0; --$i) {
1735  $parity ^= $item['data'][$i];
1736  }
1737  }
1738  }
1739  return $parity;
1740  }
1741 
1748  protected function checkModeNum($size, $data) {
1749  for ($i=0; $i<$size; ++$i) {
1750  if ((ord($data[$i]) < ord('0')) OR (ord($data[$i]) > ord('9'))){
1751  return false;
1752  }
1753  }
1754  return true;
1755  }
1756 
1762  protected function lookAnTable($c) {
1763  return (($c > 127)?-1:$this->anTable[$c]);
1764  }
1765 
1772  protected function checkModeAn($size, $data) {
1773  for ($i=0; $i<$size; ++$i) {
1774  if ($this->lookAnTable(ord($data[$i])) == -1) {
1775  return false;
1776  }
1777  }
1778  return true;
1779  }
1780 
1786  protected function estimateBitsModeNum($size) {
1787  $w = (int)($size / 3);
1788  $bits = ($w * 10);
1789  switch($size - ($w * 3)) {
1790  case 1: {
1791  $bits += 4;
1792  break;
1793  }
1794  case 2: {
1795  $bits += 7;
1796  break;
1797  }
1798  }
1799  return $bits;
1800  }
1801 
1807  protected function estimateBitsModeAn($size) {
1808  $bits = (int)($size * 5.5); // (size / 2 ) * 11
1809  if ($size & 1) {
1810  $bits += 6;
1811  }
1812  return $bits;
1813  }
1814 
1820  protected function estimateBitsMode8($size) {
1821  return (int)($size * 8);
1822  }
1823 
1829  protected function estimateBitsModeKanji($size) {
1830  return (int)($size * 6.5); // (size / 2 ) * 13
1831  }
1832 
1839  protected function checkModeKanji($size, $data) {
1840  if ($size & 1) {
1841  return false;
1842  }
1843  for ($i=0; $i<$size; $i+=2) {
1844  $val = (ord($data[$i]) << 8) | ord($data[$i+1]);
1845  if (($val < 0x8140) OR (($val > 0x9ffc) AND ($val < 0xe040)) OR ($val > 0xebbf)) {
1846  return false;
1847  }
1848  }
1849  return true;
1850  }
1851 
1859  protected function check($mode, $size, $data) {
1860  if ($size <= 0) {
1861  return false;
1862  }
1863  switch($mode) {
1864  case QR_MODE_NM: {
1865  return $this->checkModeNum($size, $data);
1866  }
1867  case QR_MODE_AN: {
1868  return $this->checkModeAn($size, $data);
1869  }
1870  case QR_MODE_KJ: {
1871  return $this->checkModeKanji($size, $data);
1872  }
1873  case QR_MODE_8B: {
1874  return true;
1875  }
1876  case QR_MODE_ST: {
1877  return true;
1878  }
1879  default: {
1880  break;
1881  }
1882  }
1883  return false;
1884  }
1885 
1892  protected function estimateBitStreamSize($items, $version) {
1893  $bits = 0;
1894  if ($version == 0) {
1895  $version = 1;
1896  }
1897  foreach ($items as $item) {
1898  switch($item['mode']) {
1899  case QR_MODE_NM: {
1900  $bits = $this->estimateBitsModeNum($item['size']);
1901  break;
1902  }
1903  case QR_MODE_AN: {
1904  $bits = $this->estimateBitsModeAn($item['size']);
1905  break;
1906  }
1907  case QR_MODE_8B: {
1908  $bits = $this->estimateBitsMode8($item['size']);
1909  break;
1910  }
1911  case QR_MODE_KJ: {
1912  $bits = $this->estimateBitsModeKanji($item['size']);
1913  break;
1914  }
1915  case QR_MODE_ST: {
1916  return STRUCTURE_HEADER_BITS;
1917  }
1918  default: {
1919  return 0;
1920  }
1921  }
1922  $l = $this->lengthIndicator($item['mode'], $version);
1923  $m = 1 << $l;
1924  $num = (int)(($item['size'] + $m - 1) / $m);
1925  $bits += $num * (4 + $l);
1926  }
1927  return $bits;
1928  }
1929 
1935  protected function estimateVersion($items) {
1936  $version = 0;
1937  $prev = 0;
1938  do {
1939  $prev = $version;
1940  $bits = $this->estimateBitStreamSize($items, $prev);
1941  $version = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
1942  if ($version < 0) {
1943  return -1;
1944  }
1945  } while ($version > $prev);
1946  return $version;
1947  }
1948 
1956  protected function lengthOfCode($mode, $version, $bits) {
1957  $payload = $bits - 4 - $this->lengthIndicator($mode, $version);
1958  switch($mode) {
1959  case QR_MODE_NM: {
1960  $chunks = (int)($payload / 10);
1961  $remain = $payload - $chunks * 10;
1962  $size = $chunks * 3;
1963  if ($remain >= 7) {
1964  $size += 2;
1965  } elseif ($remain >= 4) {
1966  $size += 1;
1967  }
1968  break;
1969  }
1970  case QR_MODE_AN: {
1971  $chunks = (int)($payload / 11);
1972  $remain = $payload - $chunks * 11;
1973  $size = $chunks * 2;
1974  if ($remain >= 6) {
1975  ++$size;
1976  }
1977  break;
1978  }
1979  case QR_MODE_8B: {
1980  $size = (int)($payload / 8);
1981  break;
1982  }
1983  case QR_MODE_KJ: {
1984  $size = (int)(($payload / 13) * 2);
1985  break;
1986  }
1987  case QR_MODE_ST: {
1988  $size = (int)($payload / 8);
1989  break;
1990  }
1991  default: {
1992  $size = 0;
1993  break;
1994  }
1995  }
1996  $maxsize = $this->maximumWords($mode, $version);
1997  if ($size < 0) {
1998  $size = 0;
1999  }
2000  if ($size > $maxsize) {
2001  $size = $maxsize;
2002  }
2003  return $size;
2004  }
2005 
2011  protected function createBitStream($items) {
2012  $total = 0;
2013  foreach ($items as $key => $item) {
2014  $items[$key] = $this->encodeBitStream($item, $this->version);
2015  $bits = count($items[$key]['bstream']);
2016  $total += $bits;
2017  }
2018  return array($items, $total);
2019  }
2020 
2026  protected function convertData($items) {
2027  $ver = $this->estimateVersion($items);
2028  if ($ver > $this->version) {
2029  $this->version = $ver;
2030  }
2031  while (true) {
2032  $cbs = $this->createBitStream($items);
2033  $items = $cbs[0];
2034  $bits = $cbs[1];
2035  if ($bits < 0) {
2036  return -1;
2037  }
2038  $ver = $this->getMinimumVersion((int)(($bits + 7) / 8), $this->level);
2039  if ($ver < 0) {
2040  return -1;
2041  } elseif ($ver > $this->version) {
2042  $this->version = $ver;
2043  } else {
2044  break;
2045  }
2046  }
2047  return $items;
2048  }
2049 
2055  protected function appendPaddingBit($bstream) {
2056  if (is_null($bstream)) {
2057  return null;
2058  }
2059  $bits = count($bstream);
2060  $maxwords = $this->getDataLength($this->version, $this->level);
2061  $maxbits = $maxwords * 8;
2062  if ($maxbits == $bits) {
2063  return $bstream;
2064  }
2065  if ($maxbits - $bits < 5) {
2066  return $this->appendNum($bstream, $maxbits - $bits, 0);
2067  }
2068  $bits += 4;
2069  $words = (int)(($bits + 7) / 8);
2070  $padding = array();
2071  $padding = $this->appendNum($padding, $words * 8 - $bits + 4, 0);
2072  $padlen = $maxwords - $words;
2073  if ($padlen > 0) {
2074  $padbuf = array();
2075  for ($i=0; $i<$padlen; ++$i) {
2076  $padbuf[$i] = ($i&1)?0x11:0xec;
2077  }
2078  $padding = $this->appendBytes($padding, $padlen, $padbuf);
2079  }
2080  return $this->appendBitstream($bstream, $padding);
2081  }
2082 
2088  protected function mergeBitStream($items) {
2089  $items = $this->convertData($items);
2090  if (!is_array($items)) {
2091  return null;
2092  }
2093  $bstream = array();
2094  foreach ($items as $item) {
2095  $bstream = $this->appendBitstream($bstream, $item['bstream']);
2096  }
2097  return $bstream;
2098  }
2099 
2105  protected function getBitStream($items) {
2106  $bstream = $this->mergeBitStream($items);
2107  return $this->appendPaddingBit($bstream);
2108  }
2109 
2115  protected function getByteStream($items) {
2116  $bstream = $this->getBitStream($items);
2117  return $this->bitstreamToByte($bstream);
2118  }
2119 
2120  // - - - - - - - - - - - - - - - - - - - - - - - - -
2121 
2122  // QRbitstream
2123 
2129  protected function allocate($setLength) {
2130  return array_fill(0, $setLength, 0);
2131  }
2132 
2139  protected function newFromNum($bits, $num) {
2140  $bstream = $this->allocate($bits);
2141  $mask = 1 << ($bits - 1);
2142  for ($i=0; $i<$bits; ++$i) {
2143  if ($num & $mask) {
2144  $bstream[$i] = 1;
2145  } else {
2146  $bstream[$i] = 0;
2147  }
2148  $mask = $mask >> 1;
2149  }
2150  return $bstream;
2151  }
2152 
2159  protected function newFromBytes($size, $data) {
2160  $bstream = $this->allocate($size * 8);
2161  $p=0;
2162  for ($i=0; $i<$size; ++$i) {
2163  $mask = 0x80;
2164  for ($j=0; $j<8; ++$j) {
2165  if ($data[$i] & $mask) {
2166  $bstream[$p] = 1;
2167  } else {
2168  $bstream[$p] = 0;
2169  }
2170  $p++;
2171  $mask = $mask >> 1;
2172  }
2173  }
2174  return $bstream;
2175  }
2176 
2183  protected function appendBitstream($bitstream, $append) {
2184  if ((!is_array($append)) OR (count($append) == 0)) {
2185  return $bitstream;
2186  }
2187  if (count($bitstream) == 0) {
2188  return $append;
2189  }
2190  return array_values(array_merge($bitstream, $append));
2191  }
2192 
2200  protected function appendNum($bitstream, $bits, $num) {
2201  if ($bits == 0) {
2202  return 0;
2203  }
2204  $b = $this->newFromNum($bits, $num);
2205  return $this->appendBitstream($bitstream, $b);
2206  }
2207 
2215  protected function appendBytes($bitstream, $size, $data) {
2216  if ($size == 0) {
2217  return 0;
2218  }
2219  $b = $this->newFromBytes($size, $data);
2220  return $this->appendBitstream($bitstream, $b);
2221  }
2222 
2228  protected function bitstreamToByte($bstream) {
2229  if (is_null($bstream)) {
2230  return null;
2231  }
2232  $size = count($bstream);
2233  if ($size == 0) {
2234  return array();
2235  }
2236  $data = array_fill(0, (int)(($size + 7) / 8), 0);
2237  $bytes = (int)($size / 8);
2238  $p = 0;
2239  for ($i=0; $i<$bytes; $i++) {
2240  $v = 0;
2241  for ($j=0; $j<8; $j++) {
2242  $v = $v << 1;
2243  $v |= $bstream[$p];
2244  $p++;
2245  }
2246  $data[$i] = $v;
2247  }
2248  if ($size & 7) {
2249  $v = 0;
2250  for ($j=0; $j<($size & 7); $j++) {
2251  $v = $v << 1;
2252  $v |= $bstream[$p];
2253  $p++;
2254  }
2255  $data[$bytes] = $v;
2256  }
2257  return $data;
2258  }
2259 
2260  // - - - - - - - - - - - - - - - - - - - - - - - - -
2261 
2262  // QRspec
2263 
2273  protected function qrstrset($srctab, $x, $y, $repl, $replLen=false) {
2274  $srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
2275  return $srctab;
2276  }
2277 
2284  protected function getDataLength($version, $level) {
2285  return $this->capacity[$version][QRCAP_WORDS] - $this->capacity[$version][QRCAP_EC][$level];
2286  }
2287 
2294  protected function getECCLength($version, $level){
2295  return $this->capacity[$version][QRCAP_EC][$level];
2296  }
2297 
2303  protected function getWidth($version) {
2304  return $this->capacity[$version][QRCAP_WIDTH];
2305  }
2306 
2312  protected function getRemainder($version) {
2313  return $this->capacity[$version][QRCAP_REMINDER];
2314  }
2315 
2322  protected function getMinimumVersion($size, $level) {
2323  for ($i = 1; $i <= QRSPEC_VERSION_MAX; ++$i) {
2324  $words = ($this->capacity[$i][QRCAP_WORDS] - $this->capacity[$i][QRCAP_EC][$level]);
2325  if ($words >= $size) {
2326  return $i;
2327  }
2328  }
2329  // the size of input data is greater than QR capacity, try to lover the error correction mode
2330  return -1;
2331  }
2332 
2339  protected function lengthIndicator($mode, $version) {
2340  if ($mode == QR_MODE_ST) {
2341  return 0;
2342  }
2343  if ($version <= 9) {
2344  $l = 0;
2345  } elseif ($version <= 26) {
2346  $l = 1;
2347  } else {
2348  $l = 2;
2349  }
2350  return $this->lengthTableBits[$mode][$l];
2351  }
2352 
2359  protected function maximumWords($mode, $version) {
2360  if ($mode == QR_MODE_ST) {
2361  return 3;
2362  }
2363  if ($version <= 9) {
2364  $l = 0;
2365  } else if ($version <= 26) {
2366  $l = 1;
2367  } else {
2368  $l = 2;
2369  }
2370  $bits = $this->lengthTableBits[$mode][$l];
2371  $words = (1 << $bits) - 1;
2372  if ($mode == QR_MODE_KJ) {
2373  $words *= 2; // the number of bytes is required
2374  }
2375  return $words;
2376  }
2377 
2385  protected function getEccSpec($version, $level, $spec) {
2386  if (count($spec) < 5) {
2387  $spec = array(0, 0, 0, 0, 0);
2388  }
2389  $b1 = $this->eccTable[$version][$level][0];
2390  $b2 = $this->eccTable[$version][$level][1];
2391  $data = $this->getDataLength($version, $level);
2392  $ecc = $this->getECCLength($version, $level);
2393  if ($b2 == 0) {
2394  $spec[0] = $b1;
2395  $spec[1] = (int)($data / $b1);
2396  $spec[2] = (int)($ecc / $b1);
2397  $spec[3] = 0;
2398  $spec[4] = 0;
2399  } else {
2400  $spec[0] = $b1;
2401  $spec[1] = (int)($data / ($b1 + $b2));
2402  $spec[2] = (int)($ecc / ($b1 + $b2));
2403  $spec[3] = $b2;
2404  $spec[4] = $spec[1] + 1;
2405  }
2406  return $spec;
2407  }
2408 
2416  protected function putAlignmentMarker($frame, $ox, $oy) {
2417  $finder = array(
2418  "\xa1\xa1\xa1\xa1\xa1",
2419  "\xa1\xa0\xa0\xa0\xa1",
2420  "\xa1\xa0\xa1\xa0\xa1",
2421  "\xa1\xa0\xa0\xa0\xa1",
2422  "\xa1\xa1\xa1\xa1\xa1"
2423  );
2424  $yStart = $oy - 2;
2425  $xStart = $ox - 2;
2426  for ($y=0; $y < 5; $y++) {
2427  $frame = $this->qrstrset($frame, $xStart, $yStart+$y, $finder[$y]);
2428  }
2429  return $frame;
2430  }
2431 
2439  protected function putAlignmentPattern($version, $frame, $width) {
2440  if ($version < 2) {
2441  return $frame;
2442  }
2443  $d = $this->alignmentPattern[$version][1] - $this->alignmentPattern[$version][0];
2444  if ($d < 0) {
2445  $w = 2;
2446  } else {
2447  $w = (int)(($width - $this->alignmentPattern[$version][0]) / $d + 2);
2448  }
2449  if ($w * $w - 3 == 1) {
2450  $x = $this->alignmentPattern[$version][0];
2451  $y = $this->alignmentPattern[$version][0];
2452  $frame = $this->putAlignmentMarker($frame, $x, $y);
2453  return $frame;
2454  }
2455  $cx = $this->alignmentPattern[$version][0];
2456  $wo = $w - 1;
2457  for ($x=1; $x < $wo; ++$x) {
2458  $frame = $this->putAlignmentMarker($frame, 6, $cx);
2459  $frame = $this->putAlignmentMarker($frame, $cx, 6);
2460  $cx += $d;
2461  }
2462  $cy = $this->alignmentPattern[$version][0];
2463  for ($y=0; $y < $wo; ++$y) {
2464  $cx = $this->alignmentPattern[$version][0];
2465  for ($x=0; $x < $wo; ++$x) {
2466  $frame = $this->putAlignmentMarker($frame, $cx, $cy);
2467  $cx += $d;
2468  }
2469  $cy += $d;
2470  }
2471  return $frame;
2472  }
2473 
2479  protected function getVersionPattern($version) {
2480  if (($version < 7) OR ($version > QRSPEC_VERSION_MAX)) {
2481  return 0;
2482  }
2483  return $this->versionPattern[($version - 7)];
2484  }
2485 
2492  protected function getFormatInfo($mask, $level) {
2493  if (($mask < 0) OR ($mask > 7)) {
2494  return 0;
2495  }
2496  if (($level < 0) OR ($level > 3)) {
2497  return 0;
2498  }
2499  return $this->formatInfo[$level][$mask];
2500  }
2501 
2509  protected function putFinderPattern($frame, $ox, $oy) {
2510  $finder = array(
2511  "\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
2512  "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
2513  "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2514  "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2515  "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
2516  "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
2517  "\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
2518  );
2519  for ($y=0; $y < 7; $y++) {
2520  $frame = $this->qrstrset($frame, $ox, ($oy + $y), $finder[$y]);
2521  }
2522  return $frame;
2523  }
2524 
2530  protected function createFrame($version) {
2531  $width = $this->capacity[$version][QRCAP_WIDTH];
2532  $frameLine = str_repeat ("\0", $width);
2533  $frame = array_fill(0, $width, $frameLine);
2534  // Finder pattern
2535  $frame = $this->putFinderPattern($frame, 0, 0);
2536  $frame = $this->putFinderPattern($frame, $width - 7, 0);
2537  $frame = $this->putFinderPattern($frame, 0, $width - 7);
2538  // Separator
2539  $yOffset = $width - 7;
2540  for ($y=0; $y < 7; ++$y) {
2541  $frame[$y][7] = "\xc0";
2542  $frame[$y][$width - 8] = "\xc0";
2543  $frame[$yOffset][7] = "\xc0";
2544  ++$yOffset;
2545  }
2546  $setPattern = str_repeat("\xc0", 8);
2547  $frame = $this->qrstrset($frame, 0, 7, $setPattern);
2548  $frame = $this->qrstrset($frame, $width-8, 7, $setPattern);
2549  $frame = $this->qrstrset($frame, 0, $width - 8, $setPattern);
2550  // Format info
2551  $setPattern = str_repeat("\x84", 9);
2552  $frame = $this->qrstrset($frame, 0, 8, $setPattern);
2553  $frame = $this->qrstrset($frame, $width - 8, 8, $setPattern, 8);
2554  $yOffset = $width - 8;
2555  for ($y=0; $y < 8; ++$y,++$yOffset) {
2556  $frame[$y][8] = "\x84";
2557  $frame[$yOffset][8] = "\x84";
2558  }
2559  // Timing pattern
2560  $wo = $width - 15;
2561  for ($i=1; $i < $wo; ++$i) {
2562  $frame[6][7+$i] = chr(0x90 | ($i & 1));
2563  $frame[7+$i][6] = chr(0x90 | ($i & 1));
2564  }
2565  // Alignment pattern
2566  $frame = $this->putAlignmentPattern($version, $frame, $width);
2567  // Version information
2568  if ($version >= 7) {
2569  $vinf = $this->getVersionPattern($version);
2570  $v = $vinf;
2571  for ($x=0; $x<6; ++$x) {
2572  for ($y=0; $y<3; ++$y) {
2573  $frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));
2574  $v = $v >> 1;
2575  }
2576  }
2577  $v = $vinf;
2578  for ($y=0; $y<6; ++$y) {
2579  for ($x=0; $x<3; ++$x) {
2580  $frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));
2581  $v = $v >> 1;
2582  }
2583  }
2584  }
2585  // and a little bit...
2586  $frame[$width - 8][8] = "\x81";
2587  return $frame;
2588  }
2589 
2595  protected function newFrame($version) {
2596  if (($version < 1) OR ($version > QRSPEC_VERSION_MAX)) {
2597  return NULL;
2598  }
2599  if (!isset($this->frames[$version])) {
2600  $this->frames[$version] = $this->createFrame($version);
2601  }
2602  if (is_null($this->frames[$version])) {
2603  return NULL;
2604  }
2605  return $this->frames[$version];
2606  }
2607 
2613  protected function rsBlockNum($spec) {
2614  return ($spec[0] + $spec[3]);
2615  }
2616 
2622  protected function rsBlockNum1($spec) {
2623  return $spec[0];
2624  }
2625 
2631  protected function rsDataCodes1($spec) {
2632  return $spec[1];
2633  }
2634 
2640  protected function rsEccCodes1($spec) {
2641  return $spec[2];
2642  }
2643 
2649  protected function rsBlockNum2($spec) {
2650  return $spec[3];
2651  }
2652 
2658  protected function rsDataCodes2($spec) {
2659  return $spec[4];
2660  }
2661 
2667  protected function rsEccCodes2($spec) {
2668  return $spec[2];
2669  }
2670 
2676  protected function rsDataLength($spec) {
2677  return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);
2678  }
2679 
2685  protected function rsEccLength($spec) {
2686  return ($spec[0] + $spec[3]) * $spec[2];
2687  }
2688 
2689  // - - - - - - - - - - - - - - - - - - - - - - - - -
2690 
2691  // QRrs
2692 
2703  protected function init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {
2704  foreach ($this->rsitems as $rs) {
2705  if (($rs['pad'] != $pad) OR ($rs['nroots'] != $nroots) OR ($rs['mm'] != $symsize)
2706  OR ($rs['gfpoly'] != $gfpoly) OR ($rs['fcr'] != $fcr) OR ($rs['prim'] != $prim)) {
2707  continue;
2708  }
2709  return $rs;
2710  }
2711  $rs = $this->init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);
2712  array_unshift($this->rsitems, $rs);
2713  return $rs;
2714  }
2715 
2716  // - - - - - - - - - - - - - - - - - - - - - - - - -
2717 
2718  // QRrsItem
2719 
2726  protected function modnn($rs, $x) {
2727  while ($x >= $rs['nn']) {
2728  $x -= $rs['nn'];
2729  $x = ($x >> $rs['mm']) + ($x & $rs['nn']);
2730  }
2731  return $x;
2732  }
2733 
2744  protected function init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad) {
2745  // Based on Reed solomon encoder by Phil Karn, KA9Q (GNU-LGPLv2)
2746  $rs = null;
2747  // Check parameter ranges
2748  if (($symsize < 0) OR ($symsize > 8)) {
2749  return $rs;
2750  }
2751  if (($fcr < 0) OR ($fcr >= (1<<$symsize))) {
2752  return $rs;
2753  }
2754  if (($prim <= 0) OR ($prim >= (1<<$symsize))) {
2755  return $rs;
2756  }
2757  if (($nroots < 0) OR ($nroots >= (1<<$symsize))) {
2758  return $rs;
2759  }
2760  if (($pad < 0) OR ($pad >= ((1<<$symsize) -1 - $nroots))) {
2761  return $rs;
2762  }
2763  $rs = array();
2764  $rs['mm'] = $symsize;
2765  $rs['nn'] = (1 << $symsize) - 1;
2766  $rs['pad'] = $pad;
2767  $rs['alpha_to'] = array_fill(0, ($rs['nn'] + 1), 0);
2768  $rs['index_of'] = array_fill(0, ($rs['nn'] + 1), 0);
2769  // PHP style macro replacement ;)
2770  $NN =& $rs['nn'];
2771  $A0 =& $NN;
2772  // Generate Galois field lookup tables
2773  $rs['index_of'][0] = $A0; // log(zero) = -inf
2774  $rs['alpha_to'][$A0] = 0; // alpha**-inf = 0
2775  $sr = 1;
2776  for ($i=0; $i<$rs['nn']; ++$i) {
2777  $rs['index_of'][$sr] = $i;
2778  $rs['alpha_to'][$i] = $sr;
2779  $sr <<= 1;
2780  if ($sr & (1 << $symsize)) {
2781  $sr ^= $gfpoly;
2782  }
2783  $sr &= $rs['nn'];
2784  }
2785  if ($sr != 1) {
2786  // field generator polynomial is not primitive!
2787  return NULL;
2788  }
2789  // Form RS code generator polynomial from its roots
2790  $rs['genpoly'] = array_fill(0, ($nroots + 1), 0);
2791  $rs['fcr'] = $fcr;
2792  $rs['prim'] = $prim;
2793  $rs['nroots'] = $nroots;
2794  $rs['gfpoly'] = $gfpoly;
2795  // Find prim-th root of 1, used in decoding
2796  for ($iprim=1; ($iprim % $prim) != 0; $iprim += $rs['nn']) {
2797  ; // intentional empty-body loop!
2798  }
2799  $rs['iprim'] = (int)($iprim / $prim);
2800  $rs['genpoly'][0] = 1;
2801  for ($i = 0,$root=$fcr*$prim; $i < $nroots; $i++, $root += $prim) {
2802  $rs['genpoly'][$i+1] = 1;
2803  // Multiply rs->genpoly[] by @**(root + x)
2804  for ($j = $i; $j > 0; --$j) {
2805  if ($rs['genpoly'][$j] != 0) {
2806  $rs['genpoly'][$j] = $rs['genpoly'][$j-1] ^ $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][$j]] + $root)];
2807  } else {
2808  $rs['genpoly'][$j] = $rs['genpoly'][$j-1];
2809  }
2810  }
2811  // rs->genpoly[0] can never be zero
2812  $rs['genpoly'][0] = $rs['alpha_to'][$this->modnn($rs, $rs['index_of'][$rs['genpoly'][0]] + $root)];
2813  }
2814  // convert rs->genpoly[] to index form for quicker encoding
2815  for ($i = 0; $i <= $nroots; ++$i) {
2816  $rs['genpoly'][$i] = $rs['index_of'][$rs['genpoly'][$i]];
2817  }
2818  return $rs;
2819  }
2820 
2828  protected function encode_rs_char($rs, $data, $parity) {
2829  $MM =& $rs['mm']; // bits per symbol
2830  $NN =& $rs['nn']; // the total number of symbols in a RS block
2831  $ALPHA_TO =& $rs['alpha_to']; // the address of an array of NN elements to convert Galois field elements in index (log) form to polynomial form
2832  $INDEX_OF =& $rs['index_of']; // the address of an array of NN elements to convert Galois field elements in polynomial form to index (log) form
2833  $GENPOLY =& $rs['genpoly']; // an array of NROOTS+1 elements containing the generator polynomial in index form
2834  $NROOTS =& $rs['nroots']; // the number of roots in the RS code generator polynomial, which is the same as the number of parity symbols in a block
2835  $FCR =& $rs['fcr']; // first consecutive root, index form
2836  $PRIM =& $rs['prim']; // primitive element, index form
2837  $IPRIM =& $rs['iprim']; // prim-th root of 1, index form
2838  $PAD =& $rs['pad']; // the number of pad symbols in a block
2839  $A0 =& $NN;
2840  $parity = array_fill(0, $NROOTS, 0);
2841  for ($i=0; $i < ($NN - $NROOTS - $PAD); $i++) {
2842  $feedback = $INDEX_OF[$data[$i] ^ $parity[0]];
2843  if ($feedback != $A0) {
2844  // feedback term is non-zero
2845  // This line is unnecessary when GENPOLY[NROOTS] is unity, as it must
2846  // always be for the polynomials constructed by init_rs()
2847  $feedback = $this->modnn($rs, $NN - $GENPOLY[$NROOTS] + $feedback);
2848  for ($j=1; $j < $NROOTS; ++$j) {
2849  $parity[$j] ^= $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[($NROOTS - $j)])];
2850  }
2851  }
2852  // Shift
2853  array_shift($parity);
2854  if ($feedback != $A0) {
2855  array_push($parity, $ALPHA_TO[$this->modnn($rs, $feedback + $GENPOLY[0])]);
2856  } else {
2857  array_push($parity, 0);
2858  }
2859  }
2860  return $parity;
2861  }
2862 
2863 } // end QRcode class
2864 
2865 //============================================================+
2866 // END OF FILE
2867 //============================================================+
QRcode\$bit
$bit
Single bit value.
Definition: qrcode.php:371
QRcode\encodeModeKanji
encodeModeKanji($inputitem, $version)
encodeModeKanji
Definition: qrcode.php:1603
QRcode\$b1
$b1
Value b1.
Definition: qrcode.php:421
QRcode\maximumWords
maximumWords($mode, $version)
Return the maximum length for the mode and version.
Definition: qrcode.php:2359
QRcode\checkModeAn
checkModeAn($size, $data)
checkModeAn
Definition: qrcode.php:1772
QRcode\getRemainder
getRemainder($version)
Return the numer of remainder bits.
Definition: qrcode.php:2312
QRcode\rsDataLength
rsDataLength($spec)
Return data length.
Definition: qrcode.php:2676
$size
$size
Definition: RandomTest.php:79
QRcode\putFinderPattern
putFinderPattern($frame, $ox, $oy)
Put a finder pattern.
Definition: qrcode.php:2509
QRcode\mask6
mask6($x, $y)
mask6
Definition: qrcode.php:1043
QRcode\newFromBytes
newFromBytes($size, $data)
Return new bitstream from bytes.
Definition: qrcode.php:2159
QRcode\estimateBitsModeAn
estimateBitsModeAn($size)
estimateBitsModeAn
Definition: qrcode.php:1807
QRcode\getEccSpec
getEccSpec($version, $level, $spec)
Return an array of ECC specification.
Definition: qrcode.php:2385
QRcode\calcN1N3
calcN1N3($length)
calcN1N3
Definition: qrcode.php:1127
QRcode\getBarcodeArray
getBarcodeArray()
Returns a barcode array which is readable by TCPDF.
Definition: qrcode.php:680
QRcode\estimateBitsModeKanji
estimateBitsModeKanji($size)
estimateBitsModeKanji
Definition: qrcode.php:1829
QRcode\calcParity
calcParity($items)
calcParity
Definition: qrcode.php:1730
$ret
$ret
Definition: Structures_BibTex_example.php:7
QRcode\setFrameAt
setFrameAt($at, $val)
Set frame value at specified position.
Definition: qrcode.php:786
QRcode\$version
$version
QR code version.
Definition: qrcode.php:303
QRcode\$rsitems
$rsitems
Reed-Solomon items.
Definition: qrcode.php:451
QRcode\checkModeNum
checkModeNum($size, $data)
checkModeNum
Definition: qrcode.php:1748
QRcode\encodeMask
encodeMask($mask)
Encode mask.
Definition: qrcode.php:720
$h
$h
Definition: example_009.php:101
QRcode\$level
$level
Levels of error correction.
Definition: qrcode.php:309
QRcode\splitString
splitString()
splitString
Definition: qrcode.php:1445
QRcode\$formatInfo
$formatInfo
Array Format information.
Definition: qrcode.php:619
$code
$code
Definition: example_050.php:99
QRcode\encodeModeAn
encodeModeAn($inputitem, $version)
encodeModeAn
Definition: qrcode.php:1564
QRcode\newFromNum
newFromNum($bits, $num)
Return new bitstream from number.
Definition: qrcode.php:2139
QRcode\toUpper
toUpper()
toUpper
Definition: qrcode.php:1484
QRcode\encodeBitStream
encodeBitStream($inputitem, $version)
encodeBitStream
Definition: qrcode.php:1641
QRcode\rsDataCodes2
rsDataCodes2($spec)
Return data codes 2.
Definition: qrcode.php:2658
QRcode\makeMaskNo
makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly=false)
makeMaskNo
Definition: qrcode.php:1088
QRcode\getWidth
getWidth($version)
Return the width of the symbol for the version.
Definition: qrcode.php:2303
QRcode\rsEccCodes1
rsEccCodes1($spec)
Return ecc codes 1.
Definition: qrcode.php:2640
QRcode\rsDataCodes1
rsDataCodes1($spec)
Return data codes 1.
Definition: qrcode.php:2631
QRcode\getFrameAt
getFrameAt($at)
Get frame value at specified position.
Definition: qrcode.php:795
QRcode\eatAn
eatAn()
eatAn
Definition: qrcode.php:1344
QRcode\rsBlockNum2
rsBlockNum2($spec)
Return block number 2.
Definition: qrcode.php:2649
QRcode\putAlignmentMarker
putAlignmentMarker($frame, $ox, $oy)
Put an alignment marker.
Definition: qrcode.php:2416
QRcode\getBitStream
getBitStream($items)
Returns a stream of bits.
Definition: qrcode.php:2105
QRcode\rsBlockNum1
rsBlockNum1($spec)
Return block number 1.
Definition: qrcode.php:2622
QRcode\checkModeKanji
checkModeKanji($size, $data)
checkModeKanji
Definition: qrcode.php:1839
QRcode\lengthOfCode
lengthOfCode($mode, $version, $bits)
lengthOfCode
Definition: qrcode.php:1956
QRcode\mask3
mask3($x, $y)
mask3
Definition: qrcode.php:1013
QRcode\generateMaskNo
generateMaskNo($maskNo, $width, $frame)
Return bitmask.
Definition: qrcode.php:1064
QRcode\estimateBitStreamSize
estimateBitStreamSize($items, $version)
estimateBitStreamSize
Definition: qrcode.php:1892
QRcode\isdigitat
isdigitat($str, $pos)
Return true if the character at specified position is a number.
Definition: qrcode.php:1262
QRcode\createFrame
createFrame($version)
Return a copy of initialized frame.
Definition: qrcode.php:2530
QRcode\__construct
__construct($code, $eclevel='L')
This is the class constructor.
Definition: qrcode.php:639
QRcode\eat8
eat8()
eat8
Definition: qrcode.php:1396
$w
$w
Definition: example_009.php:100
QRcode\$dataStr
$dataStr
Input data string.
Definition: qrcode.php:437
QRcode\newFrame
newFrame($version)
Set new frame for the specified version.
Definition: qrcode.php:2595
QRcode\$capacity
$capacity
Array Table of the capacity of symbols.
Definition: qrcode.php:479
QRcode\appendNum
appendNum($bitstream, $bits, $num)
Append one bitstream created from number to another.
Definition: qrcode.php:2200
QRcode\estimateBitsMode8
estimateBitsMode8($size)
estimateBitsMode8
Definition: qrcode.php:1820
QRcode\makeMask
makeMask($width, $frame, $maskNo, $level)
makeMask
Definition: qrcode.php:1115
QRcode\modnn
modnn($rs, $x)
modnn
Definition: qrcode.php:2726
QRcode\getECCLength
getECCLength($version, $level)
Return maximum error correction code length (bytes) for the version.
Definition: qrcode.php:2294
QRcode\$lengthTableBits
$lengthTableBits
Array Length indicator.
Definition: qrcode.php:527
QRcode\estimateVersion
estimateVersion($items)
estimateVersion
Definition: qrcode.php:1935
QRcode\encode_rs_char
encode_rs_char($rs, $data, $parity)
Encode a Reed-Solomon codec and returns the parity array.
Definition: qrcode.php:2828
QRcode\$items
$items
Input items.
Definition: qrcode.php:443
QRcode\getVersionPattern
getVersionPattern($version)
Return BCH encoded version information pattern that is used for the symbol of version 7 or greater...
Definition: qrcode.php:2479
QRcode\getDataLength
getDataLength($version, $level)
Return maximum data code length (bytes) for the version.
Definition: qrcode.php:2284
QRcode\$anTable
$anTable
Alphabet-numeric convesion table.
Definition: qrcode.php:463
QRcode\lookAnTable
lookAnTable($c)
Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19).
Definition: qrcode.php:1762
QRcode\appendBytes
appendBytes($bitstream, $size, $data)
Append one bitstream created from bytes to another.
Definition: qrcode.php:2215
QRcode\getCode
getCode()
Return Reed-Solomon block code.
Definition: qrcode.php:910
QRcode\init_rs_char
init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
Initialize a Reed-Solomon codec and returns an array of values.
Definition: qrcode.php:2744
QRcode\$casesensitive
$casesensitive
Boolean flag, if true the input string will be converted to uppercase.
Definition: qrcode.php:321
QRcode\convertData
convertData($items)
convertData
Definition: qrcode.php:2026
QRcode\appendNewInputItem
appendNewInputItem($items, $mode, $size, $data)
Append data to an input object.
Definition: qrcode.php:1696
$mask
$mask
Definition: example_042.php:90
QRcode\rsEccCodes2
rsEccCodes2($spec)
Return ecc codes 2.
Definition: qrcode.php:2667
QRcode\check
check($mode, $size, $data)
Validate the input data.
Definition: qrcode.php:1859
QRcode\getNextPosition
getNextPosition()
Return the next frame position.
Definition: qrcode.php:803
QRcode\putAlignmentPattern
putAlignmentPattern($version, $frame, $width)
Put an alignment pattern.
Definition: qrcode.php:2439
QRcode\encodeModeStructure
encodeModeStructure($inputitem)
encodeModeStructure
Definition: qrcode.php:1626
QRcode\init_rs
init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
Initialize a Reed-Solomon codec and add it to existing rsitems.
Definition: qrcode.php:2703
QRcode\getByteStream
getByteStream($items)
Pack all bit streams padding bits into a byte array.
Definition: qrcode.php:2115
QRcode\mask5
mask5($x, $y)
mask5
Definition: qrcode.php:1033
QRcode\$data
$data
Mask data.
Definition: qrcode.php:333
QRcode\rsEccLength
rsEccLength($spec)
Return ecc length.
Definition: qrcode.php:2685
QRcode\appendBitstream
appendBitstream($bitstream, $append)
Append one bitstream to another.
Definition: qrcode.php:2183
QRcode\appendPaddingBit
appendPaddingBit($bstream)
Append Padding Bit to bitstream.
Definition: qrcode.php:2055
QRcode\$hint
$hint
Encoding mode.
Definition: qrcode.php:315
QRcode\mask7
mask7($x, $y)
mask7
Definition: qrcode.php:1053
QRcode\binarize
binarize($frame)
Convert the frame in binary form.
Definition: qrcode.php:689
QRcode
Class to create QR-code arrays for TCPDF class.
Definition: qrcode.php:291
QRcode\$eccTable
$eccTable
Array Table of the error correction code (Reed-Solomon block).
Definition: qrcode.php:539
QRcode\mask4
mask4($x, $y)
mask4
Definition: qrcode.php:1023
QRcode\encodeModeNum
encodeModeNum($inputitem, $version)
encodeModeNum
Definition: qrcode.php:1535
QRcode\isalnumat
isalnumat($str, $pos)
Return true if the character at specified position is an alphanumeric character.
Definition: qrcode.php:1275
QRcode\eatKanji
eatKanji()
eatKanji
Definition: qrcode.php:1383
QRcode\mask0
mask0($x, $y)
mask0
Definition: qrcode.php:983
QRcode\$structured
$structured
Structured QR code (not supported yet).
Definition: qrcode.php:327
QRcode\$y
$y
Y position of bit.
Definition: qrcode.php:359
QRcode\rsBlockNum
rsBlockNum($spec)
Return block number 0.
Definition: qrcode.php:2613
QRcode\$datacode
$datacode
Data code.
Definition: qrcode.php:379
QRcode\eatNum
eatNum()
eatNum
Definition: qrcode.php:1312
QRcode\mask2
mask2($x, $y)
mask2
Definition: qrcode.php:1003
QRcode\bitstreamToByte
bitstreamToByte($bstream)
Convert bitstream to bytes.
Definition: qrcode.php:2228
QRcode\encodeMode8
encodeMode8($inputitem, $version)
encodeMode8
Definition: qrcode.php:1587
QRcode\encodeString
encodeString($string)
Encode the input string to QR code.
Definition: qrcode.php:704
QRcode\estimateBitsModeNum
estimateBitsModeNum($size)
estimateBitsModeNum
Definition: qrcode.php:1786
QRcode\$blocks
$blocks
Blocks.
Definition: qrcode.php:391
$l
global $l
Definition: afr.php:30
QRcode\mask1
mask1($x, $y)
mask1
Definition: qrcode.php:993
QRcode\qrstrset
qrstrset($srctab, $x, $y, $repl, $replLen=false)
Replace a value on the array at the specified position.
Definition: qrcode.php:2273
QRcode\$width
$width
Width.
Definition: qrcode.php:341
QRcode\identifyMode
identifyMode($pos)
identifyMode
Definition: qrcode.php:1287
QRcode\init
init($spec)
Initialize code.
Definition: qrcode.php:859
QRcode\createBitStream
createBitStream($items)
createBitStream
Definition: qrcode.php:2011
QRcode\$ecccode
$ecccode
Error correction code.
Definition: qrcode.php:385
QRcode\lengthIndicator
lengthIndicator($mode, $version)
Return the size of length indicator for the mode and version.
Definition: qrcode.php:2339
QRcode\$frames
$frames
Array of frames.
Definition: qrcode.php:457
QRcode\$barcode_array
$barcode_array
Barcode array to be returned which is readable by TCPDF.
Definition: qrcode.php:297
QRcode\mask
mask($width, $frame, $level)
mask
Definition: qrcode.php:1220
QRcode\mergeBitStream
mergeBitStream($items)
mergeBitStream
Definition: qrcode.php:2088
QRcode\$rsblocks
$rsblocks
Reed-Solomon blocks.
Definition: qrcode.php:397
QRcode\$dir
$dir
Direction.
Definition: qrcode.php:365
QRcode\writeFormatInformation
writeFormatInformation($width, &$frame, $mask, $level)
Write Format Information on frame and returns the number of black bits.
Definition: qrcode.php:941
QRcode\$frame
$frame
Frame.
Definition: qrcode.php:347
QRcode\newInputItem
newInputItem($mode, $size, $data, $bstream=null)
newInputItem
Definition: qrcode.php:1513
QRcode\$dataLength
$dataLength
Data length.
Definition: qrcode.php:409
QRcode\$versionPattern
$versionPattern
Array Version information pattern (BCH coded).
Definition: qrcode.php:607
QRcode\insertStructuredAppendHeader
insertStructuredAppendHeader($items, $size, $index, $parity)
insertStructuredAppendHeader
Definition: qrcode.php:1712
QRcode\evaluateSymbol
evaluateSymbol($width, $frame)
evaluateSymbol
Definition: qrcode.php:1158
QRcode\getFormatInfo
getFormatInfo($mask, $level)
Return BCH encoded format information pattern.
Definition: qrcode.php:2492
QRcode\$runLength
$runLength
Run length.
Definition: qrcode.php:429
QRcode\$eccLength
$eccLength
Error correction length.
Definition: qrcode.php:415
QRcode\$count
$count
Counter.
Definition: qrcode.php:403
QRcode\getMinimumVersion
getMinimumVersion($size, $level)
Return a version number that satisfies the input code length.
Definition: qrcode.php:2322
QRcode\$x
$x
X position of bit.
Definition: qrcode.php:353
QRcode\$alignmentPattern
$alignmentPattern
Array Positions of alignment patterns.
Definition: qrcode.php:589
QRcode\allocate
allocate($setLength)
Return an array with zeros.
Definition: qrcode.php:2129