<?php

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);
        }
        $eccLevel = 'L';
        if (1 < count($mode)) {
            $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 = (double) $usec + (double) $sec;
        if (!isset($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;
        $p = 0;
        echo '<table cellpadding="3" cellspacing="1">' . "\r\n" . '                    <thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>' . "\r\n" . '                    <tbody>';
        foreach ($GLOBALS['qr_time_bench'] as $markerId => $thisTime) {
            if (0 < $p) {
                echo '<tr><th style="text-align:right">till ' . $markerId . ': </th><td>' . number_format($thisTime - $lastTime, 6) . 's</td></tr>';
            } else {
                $startTime = $thisTime;
            }
            $p++;
            $lastTime = $thisTime;
        }
        echo '</tbody><tfoot>' . "\r\n" . '                <tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>' . number_format($lastTime - $startTime, 6) . 's</td></tr>' . "\r\n" . '            </tfoot>' . "\r\n" . '            </table>';
    }
}
QRtools::markTime('start');