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| //============================================================+ | |
| // File name : datamatrix.php | |
| // Version : 1.0.003 | |
| // Begin : 2010-06-07 | |
| // Last Update : 2012-09-15 | |
| // Author : Nicola Asuni - Tecnick.com LTD - Manor Coach House, Church Hill, Aldershot, Hants, GU12 4RQ, UK - 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 1.0.003 | |
| */ | |
| // 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 1.0.003 | |
| */ | |
| 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); | |
| ++$cw_num; | |
| break; | |
| } | |
| } | |
| } while (($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 | |
| $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; | |
| $field_lenght = 0; | |
| while ($epos < $data_lenght) { | |
| // 2. process the next character in EDIFACT encodation. | |
| $chr = ord($data{($epos)}); | |
| ++$epos; | |
| $temp_cw[] = $chr; | |
| ++$field_lenght; | |
| if (($field_lenght == 4) OR ($epos == $data_lenght)) { | |
| if ($field_lenght < 4) { | |
| // set unlatch character | |
| $temp_cw[] = 0x1f; | |
| ++$field_lenght; | |
| $enc = ENC_ASCII; | |
| // fill empty characters | |
| for ($i = $field_lenght; $i < 4; ++$i) { | |
| $temp_cw[] = 0; | |
| } | |
| } | |
| // encodes four data characters in three codewords | |
| $cw[] = (($temp_cw[0] & 0x3F) << 2) + (($temp_cw[1] & 0x30) >> 4); | |
| $cw[] = (($temp_cw[1] & 0x0F) << 4) + (($temp_cw[2] & 0x3C) >> 2); | |
| $cw[] = (($temp_cw[2] & 0x03) << 6) + ($temp_cw[3] & 0x3F); | |
| $cw_num += 3; | |
| $temp_cw = array(); | |
| $pos = $epos; | |
| $field_lenght = 0; | |
| } | |
| } | |
| // 1. If the EDIFACT encoding is at the point of starting a new triple symbol character and if the look-ahead test (starting at step J) indicates another mode, switch to that mode. | |
| if ($field_lenght == 0) { | |
| // get remaining number of data symbols | |
| $cwr = ($this->getMaxDataCodewords($cw_num + 2) - $cw_num); | |
| if ($cwr < 3) { | |
| // return to ascii without unlatch | |
| $enc = ENC_ASCII; | |
| break; // exit from EDIFACT mode | |
| } else { | |
| $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 EDIFACT mode | |
| } | |
| } | |
| } | |
| 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 | |
| //============================================================+ | |