vendor/phpqrcode/qrtools.php

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<?php
/*
 * PHP QR Code encoder
 *
 * Toolset, handy and debug utilites.
 *
 * PHP QR Code is distributed under LGPL 3
 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
 *
 * This library 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 any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

    class QRtools {
    
        //----------------------------------------------------------------------
        public static function binarize($frame)
        {
            $len = count($frame);
            foreach ($frame as &$frameLine) {
                
                for($i=0; $i<$len; $i++) {
                    $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
                }
            }
            
            return $frame;
        }
        
        //----------------------------------------------------------------------
        public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037')
        {
            $barcode_array = array();
            
            if (!is_array($mode))
                $mode = explode(',', $mode);
                
            $eccLevel = 'L';
                
            if (count($mode) > 1) {
                $eccLevel = $mode[1];
            }
                
            $qrTab = QRcode::text($code, false, $eccLevel);
            $size = count($qrTab);
                
            $barcode_array['num_rows'] = $size;
            $barcode_array['num_cols'] = $size;
            $barcode_array['bcode'] = array();