New file |
0,0 → 1,1149 |
<?php |
//============================================================+ |
// File name : datamatrix.php |
// Version : 1.0.004 |
// Begin : 2010-06-07 |
// Last Update : 2013-02-04 |
// Author : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com |
// License : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html) |
// ------------------------------------------------------------------- |
// Copyright (C) 2010-2012 Nicola Asuni - Tecnick.com LTD |
// |
// This file is part of TCPDF software library. |
// |
// TCPDF is free software: you can redistribute it and/or modify it |
// under the terms of the GNU Lesser General Public License as |
// published by the Free Software Foundation, either version 3 of the |
// License, or (at your option) any later version. |
// |
// TCPDF is distributed in the hope that it will be useful, but |
// WITHOUT ANY WARRANTY; without even the implied warranty of |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
// See the GNU Lesser General Public License for more details. |
// |
// You should have received a copy of the GNU Lesser General Public License |
// along with TCPDF. If not, see <http://www.gnu.org/licenses/>. |
// |
// See LICENSE.TXT file for more information. |
// ------------------------------------------------------------------- |
// |
// DESCRIPTION : |
// |
// Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. |
// DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. |
//============================================================+ |
|
/** |
* @file |
* Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. |
* DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. |
* |
* @package com.tecnick.tcpdf |
* @author Nicola Asuni |
* @version 1.0.004 |
*/ |
|
// custom definitions |
if (!defined('DATAMATRIXDEFS')) { |
|
/** |
* Indicate that definitions for this class are set |
*/ |
define('DATAMATRIXDEFS', true); |
|
// ----------------------------------------------------- |
|
} // end of custom definitions |
|
// #*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*# |
|
|
/** |
* ASCII encoding: ASCII character 0 to 127 (1 byte per CW) |
*/ |
define('ENC_ASCII', 0); |
|
/** |
* C40 encoding: Upper-case alphanumeric (3/2 bytes per CW) |
*/ |
define('ENC_C40', 1); |
|
/** |
* TEXT encoding: Lower-case alphanumeric (3/2 bytes per CW) |
*/ |
define('ENC_TXT', 2); |
|
/** |
* X12 encoding: ANSI X12 (3/2 byte per CW) |
*/ |
define('ENC_X12', 3); |
|
/** |
* EDIFACT encoding: ASCII character 32 to 94 (4/3 bytes per CW) |
*/ |
define('ENC_EDF', 4); |
|
/** |
* BASE 256 encoding: ASCII character 0 to 255 (1 byte per CW) |
*/ |
define('ENC_BASE256', 5); |
|
/** |
* ASCII extended encoding: ASCII character 128 to 255 (1/2 byte per CW) |
*/ |
define('ENC_ASCII_EXT', 6); |
|
/** |
* ASCII number encoding: ASCII digits (2 bytes per CW) |
*/ |
define('ENC_ASCII_NUM', 7); |
|
/** |
* @class Datamatrix |
* Class to create DataMatrix ECC 200 barcode arrays for TCPDF class. |
* DataMatrix (ISO/IEC 16022:2006) is a 2-dimensional bar code. |
* |
* @package com.tecnick.tcpdf |
* @author Nicola Asuni |
* @version 1.0.004 |
*/ |
class Datamatrix { |
|
/** |
* Barcode array to be returned which is readable by TCPDF. |
* @protected |
*/ |
protected $barcode_array = array(); |
|
/** |
* Store last used encoding for data codewords. |
* @protected |
*/ |
protected $last_enc = ENC_ASCII; |
|
/** |
* Table of Data Matrix ECC 200 Symbol Attributes:<ul> |
* <li>total matrix rows (including finder pattern)</li> |
* <li>total matrix cols (including finder pattern)</li> |
* <li>total matrix rows (without finder pattern)</li> |
* <li>total matrix cols (without finder pattern)</li> |
* <li>region data rows (with finder pattern)</li> |
* <li>region data col (with finder pattern)</li> |
* <li>region data rows (without finder pattern)</li> |
* <li>region data col (without finder pattern)</li> |
* <li>horizontal regions</li> |
* <li>vertical regions</li> |
* <li>regions</li> |
* <li>data codewords</li> |
* <li>error codewords</li> |
* <li>blocks</li> |
* <li>data codewords per block</li> |
* <li>error codewords per block</li> |
* </ul> |
* @protected |
*/ |
protected $symbattr = array( |
// square form --------------------------------------------------------------------------------------- |
array(0x00a,0x00a,0x008,0x008,0x00a,0x00a,0x008,0x008,0x001,0x001,0x001,0x003,0x005,0x001,0x003,0x005), // 10x10 |
array(0x00c,0x00c,0x00a,0x00a,0x00c,0x00c,0x00a,0x00a,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 12x12 |
array(0x00e,0x00e,0x00c,0x00c,0x00e,0x00e,0x00c,0x00c,0x001,0x001,0x001,0x008,0x00a,0x001,0x008,0x00a), // 14x14 |
array(0x010,0x010,0x00e,0x00e,0x010,0x010,0x00e,0x00e,0x001,0x001,0x001,0x00c,0x00c,0x001,0x00c,0x00c), // 16x16 |
array(0x012,0x012,0x010,0x010,0x012,0x012,0x010,0x010,0x001,0x001,0x001,0x012,0x00e,0x001,0x012,0x00e), // 18x18 |
array(0x014,0x014,0x012,0x012,0x014,0x014,0x012,0x012,0x001,0x001,0x001,0x016,0x012,0x001,0x016,0x012), // 20x20 |
array(0x016,0x016,0x014,0x014,0x016,0x016,0x014,0x014,0x001,0x001,0x001,0x01e,0x014,0x001,0x01e,0x014), // 22x22 |
array(0x018,0x018,0x016,0x016,0x018,0x018,0x016,0x016,0x001,0x001,0x001,0x024,0x018,0x001,0x024,0x018), // 24x24 |
array(0x01a,0x01a,0x018,0x018,0x01a,0x01a,0x018,0x018,0x001,0x001,0x001,0x02c,0x01c,0x001,0x02c,0x01c), // 26x26 |
array(0x020,0x020,0x01c,0x01c,0x010,0x010,0x00e,0x00e,0x002,0x002,0x004,0x03e,0x024,0x001,0x03e,0x024), // 32x32 |
array(0x024,0x024,0x020,0x020,0x012,0x012,0x010,0x010,0x002,0x002,0x004,0x056,0x02a,0x001,0x056,0x02a), // 36x36 |
array(0x028,0x028,0x024,0x024,0x014,0x014,0x012,0x012,0x002,0x002,0x004,0x072,0x030,0x001,0x072,0x030), // 40x40 |
array(0x02c,0x02c,0x028,0x028,0x016,0x016,0x014,0x014,0x002,0x002,0x004,0x090,0x038,0x001,0x090,0x038), // 44x44 |
array(0x030,0x030,0x02c,0x02c,0x018,0x018,0x016,0x016,0x002,0x002,0x004,0x0ae,0x044,0x001,0x0ae,0x044), // 48x48 |
array(0x034,0x034,0x030,0x030,0x01a,0x01a,0x018,0x018,0x002,0x002,0x004,0x0cc,0x054,0x002,0x066,0x02a), // 52x52 |
array(0x040,0x040,0x038,0x038,0x010,0x010,0x00e,0x00e,0x004,0x004,0x010,0x118,0x070,0x002,0x08c,0x038), // 64x64 |
array(0x048,0x048,0x040,0x040,0x012,0x012,0x010,0x010,0x004,0x004,0x010,0x170,0x090,0x004,0x05c,0x024), // 72x72 |
array(0x050,0x050,0x048,0x048,0x014,0x014,0x012,0x012,0x004,0x004,0x010,0x1c8,0x0c0,0x004,0x072,0x030), // 80x80 |
array(0x058,0x058,0x050,0x050,0x016,0x016,0x014,0x014,0x004,0x004,0x010,0x240,0x0e0,0x004,0x090,0x038), // 88x88 |
array(0x060,0x060,0x058,0x058,0x018,0x018,0x016,0x016,0x004,0x004,0x010,0x2b8,0x110,0x004,0x0ae,0x044), // 96x96 |
array(0x068,0x068,0x060,0x060,0x01a,0x01a,0x018,0x018,0x004,0x004,0x010,0x330,0x150,0x006,0x088,0x038), // 104x104 |
array(0x078,0x078,0x06c,0x06c,0x014,0x014,0x012,0x012,0x006,0x006,0x024,0x41a,0x198,0x006,0x0af,0x044), // 120x120 |
array(0x084,0x084,0x078,0x078,0x016,0x016,0x014,0x014,0x006,0x006,0x024,0x518,0x1f0,0x008,0x0a3,0x03e), // 132x132 |
array(0x090,0x090,0x084,0x084,0x018,0x018,0x016,0x016,0x006,0x006,0x024,0x616,0x26c,0x00a,0x09c,0x03e), // 144x144 |
// rectangular form (currently unused) --------------------------------------------------------------------------- |
array(0x008,0x012,0x006,0x010,0x008,0x012,0x006,0x010,0x001,0x001,0x001,0x005,0x007,0x001,0x005,0x007), // 8x18 |
array(0x008,0x020,0x006,0x01c,0x008,0x010,0x006,0x00e,0x001,0x002,0x002,0x00a,0x00b,0x001,0x00a,0x00b), // 8x32 |
array(0x00c,0x01a,0x00a,0x018,0x00c,0x01a,0x00a,0x018,0x001,0x001,0x001,0x010,0x00e,0x001,0x010,0x00e), // 12x26 |
array(0x00c,0x024,0x00a,0x020,0x00c,0x012,0x00a,0x010,0x001,0x002,0x002,0x00c,0x012,0x001,0x00c,0x012), // 12x36 |
array(0x010,0x024,0x00e,0x020,0x010,0x012,0x00e,0x010,0x001,0x002,0x002,0x020,0x018,0x001,0x020,0x018), // 16x36 |
array(0x010,0x030,0x00e,0x02c,0x010,0x018,0x00e,0x016,0x001,0x002,0x002,0x031,0x01c,0x001,0x031,0x01c) // 16x48 |
); |
|
/** |
* Map encodation modes whit character sets. |
* @protected |
*/ |
protected $chset_id = array(ENC_C40 => 'C40', ENC_TXT => 'TXT', ENC_X12 =>'X12'); |
|
/** |
* Basic set of characters for each encodation mode. |
* @protected |
*/ |
protected $chset = array( |
'C40' => array( // Basic set for C40 ---------------------------------------------------------------------------- |
'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // |
0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // |
0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27),// |
'TXT' => array( // Basic set for TEXT --------------------------------------------------------------------------- |
'S1'=>0x00,'S2'=>0x01,'S3'=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x61=>0x0e,0x62=>0x0f,0x63=>0x10,0x64=>0x11,0x65=>0x12,0x66=>0x13, // |
0x67=>0x14,0x68=>0x15,0x69=>0x16,0x6a=>0x17,0x6b=>0x18,0x6c=>0x19,0x6d=>0x1a,0x6e=>0x1b,0x6f=>0x1c,0x70=>0x1d, // |
0x71=>0x1e,0x72=>0x1f,0x73=>0x20,0x74=>0x21,0x75=>0x22,0x76=>0x23,0x77=>0x24,0x78=>0x25,0x79=>0x26,0x7a=>0x27),// |
'SH1' => array( // Shift 1 set ---------------------------------------------------------------------------------- |
0x00=>0x00,0x01=>0x01,0x02=>0x02,0x03=>0x03,0x04=>0x04,0x05=>0x05,0x06=>0x06,0x07=>0x07,0x08=>0x08,0x09=>0x09, // |
0x0a=>0x0a,0x0b=>0x0b,0x0c=>0x0c,0x0d=>0x0d,0x0e=>0x0e,0x0f=>0x0f,0x10=>0x10,0x11=>0x11,0x12=>0x12,0x13=>0x13, // |
0x14=>0x14,0x15=>0x15,0x16=>0x16,0x17=>0x17,0x18=>0x18,0x19=>0x19,0x1a=>0x1a,0x1b=>0x1b,0x1c=>0x1c,0x1d=>0x1d, // |
0x1e=>0x1e,0x1f=>0x1f), // |
'SH2' => array( // Shift 2 set ---------------------------------------------------------------------------------- |
0x21=>0x00,0x22=>0x01,0x23=>0x02,0x24=>0x03,0x25=>0x04,0x26=>0x05,0x27=>0x06,0x28=>0x07,0x29=>0x08,0x2a=>0x09, // |
0x2b=>0x0a,0x2c=>0x0b,0x2d=>0x0c,0x2e=>0x0d,0x2f=>0x0e,0x3a=>0x0f,0x3b=>0x10,0x3c=>0x11,0x3d=>0x12,0x3e=>0x13, // |
0x3f=>0x14,0x40=>0x15,0x5b=>0x16,0x5c=>0x17,0x5d=>0x18,0x5e=>0x19,0x5f=>0x1a,'F1'=>0x1b,'US'=>0x1e), // |
'S3C' => array( // Shift 3 set for C40 -------------------------------------------------------------------------- |
0x60=>0x00,0x61=>0x01,0x62=>0x02,0x63=>0x03,0x64=>0x04,0x65=>0x05,0x66=>0x06,0x67=>0x07,0x68=>0x08,0x69=>0x09, // |
0x6a=>0x0a,0x6b=>0x0b,0x6c=>0x0c,0x6d=>0x0d,0x6e=>0x0e,0x6f=>0x0f,0x70=>0x10,0x71=>0x11,0x72=>0x12,0x73=>0x13, // |
0x74=>0x14,0x75=>0x15,0x76=>0x16,0x77=>0x17,0x78=>0x18,0x79=>0x19,0x7a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // |
0x7e=>0x1e,0x7f=>0x1f), |
'S3T' => array( // Shift 3 set for TEXT ------------------------------------------------------------------------- |
0x60=>0x00,0x41=>0x01,0x42=>0x02,0x43=>0x03,0x44=>0x04,0x45=>0x05,0x46=>0x06,0x47=>0x07,0x48=>0x08,0x49=>0x09, // |
0x4a=>0x0a,0x4b=>0x0b,0x4c=>0x0c,0x4d=>0x0d,0x4e=>0x0e,0x4f=>0x0f,0x50=>0x10,0x51=>0x11,0x52=>0x12,0x53=>0x13, // |
0x54=>0x14,0x55=>0x15,0x56=>0x16,0x57=>0x17,0x58=>0x18,0x59=>0x19,0x5a=>0x1a,0x7b=>0x1b,0x7c=>0x1c,0x7d=>0x1d, // |
0x7e=>0x1e,0x7f=>0x1f), // |
'X12' => array( // Set for X12 ---------------------------------------------------------------------------------- |
0x0d=>0x00,0x2a=>0x01,0x3e=>0x02,0x20=>0x03,0x30=>0x04,0x31=>0x05,0x32=>0x06,0x33=>0x07,0x34=>0x08,0x35=>0x09, // |
0x36=>0x0a,0x37=>0x0b,0x38=>0x0c,0x39=>0x0d,0x41=>0x0e,0x42=>0x0f,0x43=>0x10,0x44=>0x11,0x45=>0x12,0x46=>0x13, // |
0x47=>0x14,0x48=>0x15,0x49=>0x16,0x4a=>0x17,0x4b=>0x18,0x4c=>0x19,0x4d=>0x1a,0x4e=>0x1b,0x4f=>0x1c,0x50=>0x1d, // |
0x51=>0x1e,0x52=>0x1f,0x53=>0x20,0x54=>0x21,0x55=>0x22,0x56=>0x23,0x57=>0x24,0x58=>0x25,0x59=>0x26,0x5a=>0x27) // |
); |
|
// ----------------------------------------------------------------------------- |
|
/** |
* This is the class constructor. |
* Creates a datamatrix object |
* @param $code (string) Code to represent using Datamatrix. |
* @public |
*/ |
public function __construct($code) { |
$barcode_array = array(); |
if ((is_null($code)) OR ($code == '\0') OR ($code == '')) { |
return false; |
} |
// get data codewords |
$cw = $this->getHighLevelEncoding($code); |
// number of data codewords |
$nd = count($cw); |
// check size |
if ($nd > 1558) { |
return false; |
} |
// get minimum required matrix size. |
foreach ($this->symbattr as $params) { |
if ($params[11] >= $nd) { |
break; |
} |
} |
if ($params[11] < $nd) { |
// too much data |
return false; |
} elseif ($params[11] > $nd) { |
// add padding |
if ($this->last_enc == ENC_EDF) { |
// switch to ASCII encoding |
$cw[] = 124; |
++$nd; |
} elseif (($this->last_enc != ENC_ASCII) AND ($this->last_enc != ENC_BASE256)) { |
// switch to ASCII encoding |
$cw[] = 254; |
++$nd; |
} |
if ($params[11] > $nd) { |
// add first pad |
$cw[] = 129; |
++$nd; |
// add remaining pads |
for ($i = $nd; $i < $params[11]; ++$i) { |
$cw[] = $this->get253StateCodeword(129, $i); |
} |
} |
} |
// add error correction codewords |
$cw = $this->getErrorCorrection($cw, $params[13], $params[14], $params[15]); |
// initialize empty arrays |
$grid = array_fill(0, ($params[2] * $params[3]), 0); |
// get placement map |
$places = $this->getPlacementMap($params[2], $params[3]); |
// fill the grid with data |
$grid = array(); |
$i = 0; |
// region data row max index |
$rdri = ($params[4] - 1); |
// region data column max index |
$rdci = ($params[5] - 1); |
// for each vertical region |
for ($vr = 0; $vr < $params[9]; ++$vr) { |
// for each row on region |
for ($r = 0; $r < $params[4]; ++$r) { |
// get row |
$row = (($vr * $params[4]) + $r); |
// for each horizontal region |
for ($hr = 0; $hr < $params[8]; ++$hr) { |
// for each column on region |
for ($c = 0; $c < $params[5]; ++$c) { |
// get column |
$col = (($hr * $params[5]) + $c); |
// braw bits by case |
if ($r == 0) { |
// top finder pattern |
if ($c % 2) { |
$grid[$row][$col] = 0; |
} else { |
$grid[$row][$col] = 1; |
} |
} elseif ($r == $rdri) { |
// bottom finder pattern |
$grid[$row][$col] = 1; |
} elseif ($c == 0) { |
// left finder pattern |
$grid[$row][$col] = 1; |
} elseif ($c == $rdci) { |
// right finder pattern |
if ($r % 2) { |
$grid[$row][$col] = 1; |
} else { |
$grid[$row][$col] = 0; |
} |
} else { // data bit |
if ($places[$i] < 2) { |
$grid[$row][$col] = $places[$i]; |
} else { |
// codeword ID |
$cw_id = (floor($places[$i] / 10) - 1); |
// codeword BIT mask |
$cw_bit = pow(2, (8 - ($places[$i] % 10))); |
$grid[$row][$col] = (($cw[$cw_id] & $cw_bit) == 0) ? 0 : 1; |
} |
++$i; |
} |
} |
} |
} |
} |
$this->barcode_array['num_rows'] = $params[0]; |
$this->barcode_array['num_cols'] = $params[1]; |
$this->barcode_array['bcode'] = $grid; |
} |
|
/** |
* Returns a barcode array which is readable by TCPDF |
* @return array barcode array readable by TCPDF; |
* @public |
*/ |
public function getBarcodeArray() { |
return $this->barcode_array; |
} |
|
/** |
* Product of two numbers in a Power-of-Two Galois Field |
* @param $a (int) first number to multiply. |
* @param $b (int) second number to multiply. |
* @param $log (array) Log table. |
* @param $alog (array) Anti-Log table. |
* @param $gf (array) Number of Factors of the Reed-Solomon polynomial. |
* @return int product |
* @protected |
*/ |
protected function getGFProduct($a, $b, $log, $alog, $gf) { |
if (($a == 0) OR ($b == 0)) { |
return 0; |
} |
return ($alog[($log[$a] + $log[$b]) % ($gf - 1)]); |
} |
|
/** |
* Add error correction codewords to data codewords array (ANNEX E). |
* @param $wd (array) Array of datacodewords. |
* @param $nb (int) Number of blocks. |
* @param $nd (int) Number of data codewords per block. |
* @param $nc (int) Number of correction codewords per block. |
* @param $gf (int) numner of fields on log/antilog table (power of 2). |
* @param $pp (int) The value of its prime modulus polynomial (301 for ECC200). |
* @return array data codewords + error codewords |
* @protected |
*/ |
protected function getErrorCorrection($wd, $nb, $nd, $nc, $gf=256, $pp=301) { |
// generate the log ($log) and antilog ($alog) tables |
$log[0] = 0; |
$alog[0] = 1; |
for ($i = 1; $i < $gf; ++$i) { |
$alog[$i] = ($alog[($i - 1)] * 2); |
if ($alog[$i] >= $gf) { |
$alog[$i] ^= $pp; |
} |
$log[$alog[$i]] = $i; |
} |
ksort($log); |
// generate the polynomial coefficients (c) |
$c = array_fill(0, ($nc + 1), 0); |
$c[0] = 1; |
for ($i = 1; $i <= $nc; ++$i) { |
$c[$i] = $c[($i-1)]; |
for ($j = ($i - 1); $j >= 1; --$j) { |
$c[$j] = $c[($j - 1)] ^ $this->getGFProduct($c[$j], $alog[$i], $log, $alog, $gf); |
} |
$c[0] = $this->getGFProduct($c[0], $alog[$i], $log, $alog, $gf); |
} |
ksort($c); |
// total number of data codewords |
$num_wd = ($nb * $nd); |
// total number of error codewords |
$num_we = ($nb * $nc); |
// for each block |
for ($b = 0; $b < $nb; ++$b) { |
// create interleaved data block |
$block = array(); |
for ($n = $b; $n < $num_wd; $n += $nb) { |
$block[] = $wd[$n]; |
} |
// initialize error codewords |
$we = array_fill(0, ($nc + 1), 0); |
// calculate error correction codewords for this block |
for ($i = 0; $i < $nd; ++$i) { |
$k = ($we[0] ^ $block[$i]); |
for ($j = 0; $j < $nc; ++$j) { |
$we[$j] = ($we[($j + 1)] ^ $this->getGFProduct($k, $c[($nc - $j - 1)], $log, $alog, $gf)); |
} |
} |
// add error codewords at the end of data codewords |
$j = 0; |
for ($i = $b; $i < $num_we; $i += $nb) { |
$wd[($num_wd + $i)] = $we[$j]; |
++$j; |
} |
} |
// reorder codewords |
ksort($wd); |
return $wd; |
} |
|
/** |
* Return the 253-state codeword |
* @param $cwpad (int) Pad codeword. |
* @param $cwpos (int) Number of data codewords from the beginning of encoded data. |
* @return pad codeword |
* @protected |
*/ |
protected function get253StateCodeword($cwpad, $cwpos) { |
$pad = ($cwpad + (((149 * $cwpos) % 253) + 1)); |
if ($pad > 254) { |
$pad -= 254; |
} |
return $pad; |
} |
|
/** |
* Return the 255-state codeword |
* @param $cwpad (int) Pad codeword. |
* @param $cwpos (int) Number of data codewords from the beginning of encoded data. |
* @return pad codeword |
* @protected |
*/ |
protected function get255StateCodeword($cwpad, $cwpos) { |
$pad = ($cwpad + (((149 * $cwpos) % 255) + 1)); |
if ($pad > 255) { |
$pad -= 256; |
} |
return $pad; |
} |
|
/** |
* Returns true if the char belongs to the selected mode |
* @param $chr (int) Character (byte) to check. |
* @param $mode (int) Current encoding mode. |
* @return boolean true if the char is of the selected mode. |
* @protected |
*/ |
protected function isCharMode($chr, $mode) { |
$status = false; |
switch ($mode) { |
case ENC_ASCII: { // ASCII character 0 to 127 |
$status = (($chr >= 0) AND ($chr <= 127)); |
break; |
} |
case ENC_C40: { // Upper-case alphanumeric |
$status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 65) AND ($chr <= 90))); |
break; |
} |
case ENC_TXT: { // Lower-case alphanumeric |
$status = (($chr == 32) OR (($chr >= 48) AND ($chr <= 57)) OR (($chr >= 97) AND ($chr <= 122))); |
break; |
} |
case ENC_X12: { // ANSI X12 |
$status = (($chr == 13) OR ($chr == 42) OR ($chr == 62)); |
break; |
} |
case ENC_EDF: { // ASCII character 32 to 94 |
$status = (($chr >= 32) AND ($chr <= 94)); |
break; |
} |
case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
$status = (($chr == 232) OR ($chr == 233) OR ($chr == 234) OR ($chr == 241)); |
break; |
} |
case ENC_ASCII_EXT: { // ASCII character 128 to 255 |
$status = (($chr >= 128) AND ($chr <= 255)); |
break; |
} |
case ENC_ASCII_NUM: { // ASCII digits |
$status = (($chr >= 48) AND ($chr <= 57)); |
break; |
} |
} |
return $status; |
} |
|
/** |
* The look-ahead test scans the data to be encoded to find the best mode (Annex P - steps from J to S). |
* @param $data (string) data to encode |
* @param $pos (int) current position |
* @param $mode (int) current encoding mode |
* @return int encoding mode |
* @protected |
*/ |
protected function lookAheadTest($data, $pos, $mode) { |
$data_length = strlen($data); |
if ($pos >= $data_length) { |
return $mode; |
} |
$charscount = 0; // count processed chars |
// STEP J |
if ($mode == ENC_ASCII) { |
$numch = array(0, 1, 1, 1, 1, 1.25); |
} else { |
$numch = array(1, 2, 2, 2, 2, 2.25); |
$numch[$mode] = 0; |
} |
while (true) { |
// STEP K |
if (($pos + $charscount) == $data_length) { |
if ($numch[ENC_ASCII] <= ceil(min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
return ENC_ASCII; |
} |
if ($numch[ENC_BASE256] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
return ENC_BASE256; |
} |
if ($numch[ENC_EDF] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256]))) { |
return ENC_EDF; |
} |
if ($numch[ENC_TXT] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
return ENC_TXT; |
} |
if ($numch[ENC_X12] < ceil(min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256]))) { |
return ENC_X12; |
} |
return ENC_C40; |
} |
// get char |
$chr = ord($data[$pos + $charscount]); |
$charscount++; |
// STEP L |
if ($this->isCharMode($chr, ENC_ASCII_NUM)) { |
$numch[ENC_ASCII] += (1 / 2); |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
$numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
$numch[ENC_ASCII] += 2; |
} else { |
$numch[ENC_ASCII] = ceil($numch[ENC_ASCII]); |
$numch[ENC_ASCII] += 1; |
} |
// STEP M |
if ($this->isCharMode($chr, ENC_C40)) { |
$numch[ENC_C40] += (2 / 3); |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
$numch[ENC_C40] += (8 / 3); |
} else { |
$numch[ENC_C40] += (4 / 3); |
} |
// STEP N |
if ($this->isCharMode($chr, ENC_TXT)) { |
$numch[ENC_TXT] += (2 / 3); |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
$numch[ENC_TXT] += (8 / 3); |
} else { |
$numch[ENC_TXT] += (4 / 3); |
} |
// STEP O |
if ($this->isCharMode($chr, ENC_X12) OR $this->isCharMode($chr, ENC_C40)) { |
$numch[ENC_X12] += (2 / 3); |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
$numch[ENC_X12] += (13 / 3); |
} else { |
$numch[ENC_X12] += (10 / 3); |
} |
// STEP P |
if ($this->isCharMode($chr, ENC_EDF)) { |
$numch[ENC_EDF] += (3 / 4); |
} elseif ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
$numch[ENC_EDF] += (17 / 4); |
} else { |
$numch[ENC_EDF] += (13 / 4); |
} |
// STEP Q |
if ($this->isCharMode($chr, ENC_BASE256)) { |
$numch[ENC_BASE256] += 4; |
} else { |
$numch[ENC_BASE256] += 1; |
} |
// STEP R |
if ($charscount >= 4) { |
if (($numch[ENC_ASCII] + 1) <= min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
return ENC_ASCII; |
} |
if ((($numch[ENC_BASE256] + 1) <= $numch[ENC_ASCII]) |
OR (($numch[ENC_BASE256] + 1) < min($numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_EDF]))) { |
return ENC_BASE256; |
} |
if (($numch[ENC_EDF] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_X12], $numch[ENC_BASE256])) { |
return ENC_EDF; |
} |
if (($numch[ENC_TXT] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_X12], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
return ENC_TXT; |
} |
if (($numch[ENC_X12] + 1) < min($numch[ENC_ASCII], $numch[ENC_C40], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
return ENC_X12; |
} |
if (($numch[ENC_C40] + 1) < min($numch[ENC_ASCII], $numch[ENC_TXT], $numch[ENC_EDF], $numch[ENC_BASE256])) { |
if ($numch[ENC_C40] < $numch[ENC_X12]) { |
return ENC_C40; |
} |
if ($numch[ENC_C40] == $numch[ENC_X12]) { |
$k = ($pos + $charscount + 1); |
while ($k < $data_length) { |
$tmpchr = ord($data{$k}); |
if ($this->isCharMode($tmpchr, ENC_X12)) { |
return ENC_X12; |
} elseif (!($this->isCharMode($tmpchr, ENC_X12) OR $this->isCharMode($tmpchr, ENC_C40))) { |
break; |
} |
++$k; |
} |
return ENC_C40; |
} |
} |
} |
} // end of while |
} |
|
/** |
* Get the switching codeword to a new encoding mode (latch codeword) |
* @param $mode (int) New encoding mode. |
* @return (int) Switch codeword. |
* @protected |
*/ |
protected function getSwitchEncodingCodeword($mode) { |
switch ($mode) { |
case ENC_ASCII: { // ASCII character 0 to 127 |
$cw = 254; |
break; |
} |
case ENC_C40: { // Upper-case alphanumeric |
$cw = 230; |
break; |
} |
case ENC_TXT: { // Lower-case alphanumeric |
$cw = 239; |
break; |
} |
case ENC_X12: { // ANSI X12 |
$cw = 238; |
break; |
} |
case ENC_EDF: { // ASCII character 32 to 94 |
$cw = 240; |
break; |
} |
case ENC_BASE256: { // Function character (FNC1, Structured Append, Reader Program, or Code Page) |
$cw = 231; |
break; |
} |
} |
return $cw; |
} |
|
/** |
* Choose the minimum matrix size and return the max number of data codewords. |
* @param $numcw (int) Number of current codewords. |
* @return number of data codewords in matrix |
* @protected |
*/ |
protected function getMaxDataCodewords($numcw) { |
foreach ($this->symbattr as $key => $matrix) { |
if ($matrix[11] >= $numcw) { |
return $matrix[11]; |
} |
} |
return 0; |
} |
|
/** |
* Get high level encoding using the minimum symbol data characters for ECC 200 |
* @param $data (string) data to encode |
* @return array of codewords |
* @protected |
*/ |
protected function getHighLevelEncoding($data) { |
// STEP A. Start in ASCII encodation. |
$enc = ENC_ASCII; // current encoding mode |
$pos = 0; // current position |
$cw = array(); // array of codewords to be returned |
$cw_num = 0; // number of data codewords |
$data_lenght = strlen($data); // number of chars |
while ($pos < $data_lenght) { |
switch ($enc) { |
case ENC_ASCII: { // STEP B. While in ASCII encodation |
if (($data_lenght > 1) AND ($pos < ($data_lenght - 1)) AND ($this->isCharMode(ord($data[$pos]), ENC_ASCII_NUM) AND $this->isCharMode(ord($data[$pos + 1]), ENC_ASCII_NUM))) { |
// 1. If the next data sequence is at least 2 consecutive digits, encode the next two digits as a double digit in ASCII mode. |
$cw[] = (intval(substr($data, $pos, 2)) + 130); |
++$cw_num; |
$pos += 2; |
} else { |
// 2. If the look-ahead test (starting at step J) indicates another mode, switch to that mode. |
$newenc = $this->lookAheadTest($data, $pos, $enc); |
if ($newenc != $enc) { |
// switch to new encoding |
$enc = $newenc; |
$cw[] = $this->getSwitchEncodingCodeword($enc); |
++$cw_num; |
} else { |
// get new byte |
$chr = ord($data[$pos]); |
++$pos; |
if ($this->isCharMode($chr, ENC_ASCII_EXT)) { |
// 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. |
$cw[] = 235; |
$cw[] = ($chr - 127); |
$cw_num += 2; |
} else { |
// 4. Otherwise process the next data character in ASCII encodation. |
$cw[] = ($chr + 1); |
++$cw_num; |
} |
} |
} |
break; |
} |
case ENC_C40 : // Upper-case alphanumeric |
case ENC_TXT : // Lower-case alphanumeric |
case ENC_X12 : { // ANSI X12 |
$temp_cw = array(); |
$p = 0; |
$epos = $pos; |
// get charset ID |
$set_id = $this->chset_id[$enc]; |
// get basic charset for current encoding |
$charset = $this->chset[$set_id]; |
do { |
// 2. process the next character in C40 encodation. |
$chr = ord($data[$epos]); |
++$epos; |
// check for extended character |
if ($chr & 0x80) { |
if ($enc == ENC_X12) { |
return false; |
} |
$chr = ($chr & 0x7f); |
$temp_cw[] = 1; // shift 2 |
$temp_cw[] = 30; // upper shift |
$p += 2; |
} |
if (isset($charset[$chr])) { |
$temp_cw[] = $charset[$chr]; |
++$p; |
} else { |
if (isset($this->chset['SH1'][$chr])) { |
$temp_cw[] = 0; // shift 1 |
$shiftset = $this->chset['SH1']; |
} elseif (isset($chr, $this->chset['SH2'][$chr])) { |
$temp_cw[] = 1; // shift 2 |
$shiftset = $this->chset['SH2']; |
} elseif (($enc == ENC_C40) AND isset($this->chset['S3C'][$chr])) { |
$temp_cw[] = 2; // shift 3 |
$shiftset = $this->chset['S3C']; |
} elseif (($enc == ENC_TXT) AND isset($this->chset['S3T'][$chr])) { |
$temp_cw[] = 2; // shift 3 |
$shiftset = $this->chset['S3T']; |
} else { |
return false; |
} |
$temp_cw[] = $shiftset[$chr]; |
$p += 2; |
} |
if ($p >= 3) { |
$c1 = array_shift($temp_cw); |
$c2 = array_shift($temp_cw); |
$c3 = array_shift($temp_cw); |
$p -= 3; |
$tmp = ((1600 * $c1) + (40 * $c2) + $c3 + 1); |
$cw[] = ($tmp >> 8); |
$cw[] = ($tmp % 256); |
$cw_num += 2; |
$pos = $epos; |
// 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. |
$newenc = $this->lookAheadTest($data, $pos, $enc); |
if ($newenc != $enc) { |
$enc = $newenc; |
$cw[] = $this->getSwitchEncodingCodeword($enc); |
++$cw_num; |
$pos -= $p; |
$p = 0; |
break; |
} |
} |
} while (($p > 0) AND ($epos < $data_lenght)); |
// process last data (if any) |
if ($p > 0) { |
// get remaining number of data symbols |
$cwr = ($this->getMaxDataCodewords($cw_num + 2) - $cw_num); |
if (($cwr == 1) AND ($p == 1)) { |
// d. If one symbol character remains and one C40 value (data character) remains to be encoded |
$c1 = array_shift($temp_cw); |
--$p; |
$cw[] = ($c1 + 1); |
++$cw_num; |
} elseif (($cwr == 2) AND ($p == 1)) { |
// c. If two symbol characters remain and only one C40 value (data character) remains to be encoded |
$c1 = array_shift($temp_cw); |
--$p; |
$cw[] = 254; |
$cw[] = ($c1 + 1); |
$cw_num += 2; |
} elseif (($cwr == 2) AND ($p == 2)) { |
// b. If two symbol characters remain and two C40 values remain to be encoded |
$c1 = array_shift($temp_cw); |
$c2 = array_shift($temp_cw); |
$p -= 2; |
$tmp = ((1600 * $c1) + (40 * $c2) + 1); |
$cw[] = ($tmp >> 8); |
$cw[] = ($tmp % 256); |
$cw_num += 2; |
} else { |
// switch to ASCII encoding |
if ($enc != ENC_ASCII) { |
$enc = ENC_ASCII; |
$cw[] = $this->getSwitchEncodingCodeword($enc); |
++$cw_num; |
} |
} |
} |
break; |
} |
case ENC_EDF: { // F. While in EDIFACT (EDF) encodation |
// initialize temporary array with 0 lenght |
$temp_cw = array(); |
$epos = $pos; |
$field_lenght = 0; |
$newenc = $enc; |
do { |
// 2. process the next character in EDIFACT encodation. |
$chr = ord($data[$epos]); |
if ($this->isCharMode($chr, ENC_EDF)) { |
++$epos; |
$temp_cw[] = $chr; |
++$field_lenght; |
} |
if (($field_lenght == 4) OR ($epos == $data_lenght) OR !$this->isCharMode($chr, ENC_EDF)) { |
if ($field_lenght < 4) { |
// set unlatch character |
$temp_cw[] = 0x1f; |
++$field_lenght; |
// fill empty characters |
for ($i = $field_lenght; $i < 4; ++$i) { |
$temp_cw[] = 0; |
} |
$enc = ENC_ASCII; |
} |
// encodes four data characters in three codewords |
$tcw = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4); |
if ($tcw > 0) { |
$cw[] = $tcw; |
$cw_num++; |
} |
$tcw= (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2); |
if ($tcw > 0) { |
$cw[] = $tcw; |
$cw_num++; |
} |
$tcw = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F); |
if ($tcw > 0) { |
$cw[] = $tcw; |
$cw_num++; |
} |
$temp_cw = array(); |
$pos = $epos; |
$field_lenght = 0; |
if ($enc == ENC_ASCII) { |
break; // exit from EDIFACT mode |
} |
} |
} while ($epos < $data_lenght); |
break; |
} |
case ENC_BASE256: { // G. While in Base 256 (B256) encodation |
// initialize temporary array with 0 lenght |
$temp_cw = array(); |
$field_lenght = 0; |
while (($pos < $data_lenght) AND ($field_lenght <= 1555)) { |
$newenc = $this->lookAheadTest($data, $pos, $enc); |
if ($newenc != $enc) { |
// 1. If the look-ahead test (starting at step J) indicates another mode, switch to that mode. |
$enc = $newenc; |
$cw[] = $this->getSwitchEncodingCodeword($enc); |
++$cw_num; |
break; // exit from B256 mode |
} else { |
// 2. Otherwise, process the next character in Base 256 encodation. |
$chr = ord($data[$pos]); |
++$pos; |
$temp_cw[] = $chr; |
++$field_lenght; |
} |
} |
// set field lenght |
if ($field_lenght <= 249) { |
$cw[] = $field_lenght; |
++$cw_num; |
} else { |
$cw[] = (floor($field_lenght / 250) + 249); |
$cw[] = ($field_lenght % 250); |
$cw_num += 2; |
} |
if (!empty($temp_cw)) { |
// add B256 field |
foreach ($temp_cw as $p => $cht) { |
$cw[] = $this->get255StateCodeword($chr, ($cw_num + $p)); |
} |
} |
break; |
} |
} // end of switch enc |
} // end of while |
// set last used encoding |
$this->last_enc = $enc; |
return $cw; |
} |
|
/** |
* Places "chr+bit" with appropriate wrapping within array[]. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $row (int) Row number. |
* @param $col (int) Column number. |
* @param $chr (int) Char byte. |
* @param $bit (int) Bit. |
* @return array |
* @protected |
*/ |
protected function placeModule($marr, $nrow, $ncol, $row, $col, $chr, $bit) { |
if ($row < 0) { |
$row += $nrow; |
$col += (4 - (($nrow + 4) % 8)); |
} |
if ($col < 0) { |
$col += $ncol; |
$row += (4 - (($ncol + 4) % 8)); |
} |
$marr[(($row * $ncol) + $col)] = ((10 * $chr) + $bit); |
return $marr; |
} |
|
/** |
* Places the 8 bits of a utah-shaped symbol character. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $row (int) Row number. |
* @param $col (int) Column number. |
* @param $chr (int) Char byte. |
* @return array |
* @protected |
*/ |
protected function placeUtah($marr, $nrow, $ncol, $row, $col, $chr) { |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-2, $chr, 1); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-2, $col-1, $chr, 2); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-2, $chr, 3); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col-1, $chr, 4); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row-1, $col, $chr, 5); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-2, $chr, 6); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col-1, $chr, 7); |
$marr = $this->placeModule($marr, $nrow, $ncol, $row, $col, $chr, 8); |
return $marr; |
} |
|
/** |
* Places the 8 bits of the first special corner case. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $chr (int) Char byte. |
* @return array |
* @protected |
*/ |
protected function placeCornerA($marr, $nrow, $ncol, $chr) { |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 1, $chr, 2); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 2, $chr, 3); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6); |
$marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7); |
$marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8); |
return $marr; |
} |
|
/** |
* Places the 8 bits of the second special corner case. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $chr (int) Char byte. |
* @return array |
* @protected |
*/ |
protected function placeCornerB($marr, $nrow, $ncol, $chr) { |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-4, $chr, 4); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 5); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 6); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 7); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8); |
return $marr; |
} |
|
/** |
* Places the 8 bits of the third special corner case. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $chr (int) Char byte. |
* @return array |
* @protected |
*/ |
protected function placeCornerC($marr, $nrow, $ncol, $chr) { |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-3, 0, $chr, 1); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-2, 0, $chr, 2); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 3); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 6); |
$marr = $this->placeModule($marr, $nrow, $ncol, 2, $ncol-1, $chr, 7); |
$marr = $this->placeModule($marr, $nrow, $ncol, 3, $ncol-1, $chr, 8); |
return $marr; |
} |
|
/** |
* Places the 8 bits of the fourth special corner case. |
* (Annex F - ECC 200 symbol character placement) |
* @param $marr (array) Array of symbols. |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @param $chr (int) Char byte. |
* @return array |
* @protected |
*/ |
protected function placeCornerD($marr, $nrow, $ncol, $chr) { |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, 0, $chr, 1); |
$marr = $this->placeModule($marr, $nrow, $ncol, $nrow-1, $ncol-1, $chr, 2); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-3, $chr, 3); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-2, $chr, 4); |
$marr = $this->placeModule($marr, $nrow, $ncol, 0, $ncol-1, $chr, 5); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-3, $chr, 6); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-2, $chr, 7); |
$marr = $this->placeModule($marr, $nrow, $ncol, 1, $ncol-1, $chr, 8); |
return $marr; |
} |
|
/** |
* Build a placement map. |
* (Annex F - ECC 200 symbol character placement) |
* @param $nrow (int) Number of rows. |
* @param $ncol (int) Number of columns. |
* @return array |
* @protected |
*/ |
protected function getPlacementMap($nrow, $ncol) { |
// initialize array with zeros |
$marr = array_fill(0, ($nrow * $ncol), 0); |
// set starting values |
$chr = 1; |
$row = 4; |
$col = 0; |
do { |
// repeatedly first check for one of the special corner cases, then |
if (($row == $nrow) AND ($col == 0)) { |
$marr = $this->placeCornerA($marr, $nrow, $ncol, $chr); |
++$chr; |
} |
if (($row == ($nrow - 2)) AND ($col == 0) AND ($ncol % 4)) { |
$marr = $this->placeCornerB($marr, $nrow, $ncol, $chr); |
++$chr; |
} |
if (($row == ($nrow - 2)) AND ($col == 0) AND (($ncol % 8) == 4)) { |
$marr = $this->placeCornerC($marr, $nrow, $ncol, $chr); |
++$chr; |
} |
if (($row == ($nrow + 4)) AND ($col == 2) AND (!($ncol % 8))) { |
$marr = $this->placeCornerD($marr, $nrow, $ncol, $chr); |
++$chr; |
} |
// sweep upward diagonally, inserting successive characters, |
do { |
if (($row < $nrow) AND ($col >= 0) AND (!$marr[(($row * $ncol) + $col)])) { |
$marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr); |
++$chr; |
} |
$row -= 2; |
$col += 2; |
} while (($row >= 0) AND ($col < $ncol)); |
++$row; |
$col += 3; |
// & then sweep downward diagonally, inserting successive characters,... |
do { |
if (($row >= 0) AND ($col < $ncol) AND (!$marr[(($row * $ncol) + $col)])) { |
$marr = $this->placeUtah($marr, $nrow, $ncol, $row, $col, $chr); |
++$chr; |
} |
$row += 2; |
$col -= 2; |
} while (($row < $nrow) AND ($col >= 0)); |
$row += 3; |
++$col; |
// ... until the entire array is scanned |
} while (($row < $nrow) OR ($col < $ncol)); |
// lastly, if the lower righthand corner is untouched, fill in fixed pattern |
if (!$marr[(($nrow * $ncol) - 1)]) { |
$marr[(($nrow * $ncol) - 1)] = 1; |
$marr[(($nrow * $ncol) - $ncol - 2)] = 1; |
} |
return $marr; |
} |
|
} // end DataMatrix class |
//============================================================+ |
// END OF FILE |
//============================================================+ |