<?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();

                

            foreach ($qrTab as $line) {

                $arrAdd = array();

                foreach(str_split($line) as $char)

                    $arrAdd[] = ($char=='1')?1:0;

                $barcode_array['bcode'][] = $arrAdd;

            }

                    

            return $barcode_array;

        }

        

        //----------------------------------------------------------------------

        public static function clearCache()

        {

            self::$frames = array();

        }

        

        //----------------------------------------------------------------------

        public static function buildCache()

        {

			QRtools::markTime('before_build_cache');

			

			$mask = new QRmask();

            for ($a=1; $a <= QRSPEC_VERSION_MAX; $a++) {

                $frame = QRspec::newFrame($a);

                if (QR_IMAGE) {

                    $fileName = QR_CACHE_DIR.'frame_'.$a.'.png';

                    QRimage::png(self::binarize($frame), $fileName, 1, 0);

                }

				

				$width = count($frame);

				$bitMask = array_fill(0, $width, array_fill(0, $width, 0));

				for ($maskNo=0; $maskNo<8; $maskNo++)

					$mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);

            }

			

			QRtools::markTime('after_build_cache');

        }



        //----------------------------------------------------------------------

        public static function log($outfile, $err)

        {

            if (QR_LOG_DIR !== false) {

                if ($err != '') {

                    if ($outfile !== false) {

                        file_put_contents(QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);

                    } else {

                        file_put_contents(QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);

                    }

                }    

            }

        }

        

        //----------------------------------------------------------------------

        public static function dumpMask($frame) 

        {

            $width = count($frame);

            for($y=0;$y<$width;$y++) {

                for($x=0;$x<$width;$x++) {

                    echo ord($frame[$y][$x]).',';

                }

            }

        }

        

        //----------------------------------------------------------------------

        public static function markTime($markerId)

        {

            list($usec, $sec) = explode(" ", microtime());

            $time = ((float)$usec + (float)$sec);

            

            if (!isset($GLOBALS['qr_time_bench']))

                $GLOBALS['qr_time_bench'] = array();

            

            $GLOBALS['qr_time_bench'][$markerId] = $time;

        }

        

        //----------------------------------------------------------------------

        public static function timeBenchmark()

        {

            self::markTime('finish');

        

            $lastTime = 0;

            $startTime = 0;

            $p = 0;



            echo '<table cellpadding="3" cellspacing="1">

                    <thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>

                    <tbody>';



            foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {

                if ($p > 0) {

                    echo '<tr><th style="text-align:right">till '.$markerId.': </th><td>'.number_format($thisTime-$lastTime, 6).'s</td></tr>';

                } else {

                    $startTime = $thisTime;

                }

                

                $p++;

                $lastTime = $thisTime;

            }

            

            echo '</tbody><tfoot>

                <tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>'.number_format($lastTime-$startTime, 6).'s</td></tr>

            </tfoot>

            </table>';

        }

        

    }

    

    //##########################################################################

    

    QRtools::markTime('start');

    