<?php

class QRrsblock
{
    public $dataLength;
    public $data = array();
    public $eccLength;
    public $ecc = array();
    public function __construct($dl, $data, $el, &$ecc, QRrsItem $rs)
    {
        $rs->encode_rs_char($data, $ecc);
        $this->dataLength = $dl;
        $this->data = $data;
        $this->eccLength = $el;
        $this->ecc = $ecc;
    }
}
class QRrawcode
{
    public $version;
    public $datacode = array();
    public $ecccode = array();
    public $blocks;
    public $rsblocks = array();
    public $count;
    public $dataLength;
    public $eccLength;
    public $b1;
    public function __construct(QRinput $input)
    {
        $spec = array(0, 0, 0, 0, 0);
        $this->datacode = $input->getByteStream();
        if (is_null($this->datacode)) {
            throw new Exception('null imput string');
        }
        QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);
        $this->version = $input->getVersion();
        $this->b1 = QRspec::rsBlockNum1($spec);
        $this->dataLength = QRspec::rsDataLength($spec);
        $this->eccLength = QRspec::rsEccLength($spec);
        $this->ecccode = array_fill(0, $this->eccLength, 0);
        $this->blocks = QRspec::rsBlockNum($spec);
        $ret = $this->init($spec);
        if ($ret < 0) {
            throw new Exception('block alloc error');
            return NULL;
        }
        $this->count = 0;
    }
    public function init(array $spec)
    {
        $dl = QRspec::rsDataCodes1($spec);
        $el = QRspec::rsEccCodes1($spec);
        $rs = QRrs::init_rs(8, 285, 0, 1, $el, 255 - $dl - $el);
        $blockNo = 0;
        $dataPos = 0;
        $eccPos = 0;
        for ($i = 0; $i < QRspec::rsBlockNum1($spec); $i++) {
            $ecc = array_slice($this->ecccode, $eccPos);
            $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
            $this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);
            $dataPos += $dl;
            $eccPos += $el;
            $blockNo++;
        }
        if (QRspec::rsBlockNum2($spec) == 0) {
            return 0;
        }
        $dl = QRspec::rsDataCodes2($spec);
        $el = QRspec::rsEccCodes2($spec);
        $rs = QRrs::init_rs(8, 285, 0, 1, $el, 255 - $dl - $el);
        if ($rs == NULL) {
            return -1;
        }
        for ($i = 0; $i < QRspec::rsBlockNum2($spec); $i++) {
            $ecc = array_slice($this->ecccode, $eccPos);
            $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
            $this->ecccode = array_merge(array_slice($this->ecccode, 0, $eccPos), $ecc);
            $dataPos += $dl;
            $eccPos += $el;
            $blockNo++;
        }
        return 0;
    }
    public function getCode()
    {
        if ($this->count < $this->dataLength) {
            $row = $this->count % $this->blocks;
            $col = $this->count / $this->blocks;
            if ($this->rsblocks[0]->dataLength <= $col) {
                $row += $this->b1;
            }
            $ret = $this->rsblocks[$row]->data[$col];
        } else {
            if ($this->count < $this->dataLength + $this->eccLength) {
                $row = ($this->count - $this->dataLength) % $this->blocks;
                $col = ($this->count - $this->dataLength) / $this->blocks;
                $ret = $this->rsblocks[$row]->ecc[$col];
            } else {
                return 0;
            }
        }
        $this->count++;
        return $ret;
    }
}
class QRcode
{
    public $version;
    public $width;
    public $data;
    public function encodeMask(QRinput $input, $mask)
    {
        if ($input->getVersion() < 0 || QRSPEC_VERSION_MAX < $input->getVersion()) {
            throw new Exception('wrong version');
        }
        if (QR_ECLEVEL_H < $input->getErrorCorrectionLevel()) {
            throw new Exception('wrong level');
        }
        $raw = new QRrawcode($input);
        QRtools::markTime('after_raw');
        $version = $raw->version;
        $width = QRspec::getWidth($version);
        $frame = QRspec::newFrame($version);
        $filler = new FrameFiller($width, $frame);
        if (is_null($filler)) {
            return NULL;
        }
        for ($i = 0; $i < $raw->dataLength + $raw->eccLength; $i++) {
            $code = $raw->getCode();
            $bit = 128;
            for ($j = 0; $j < 8; $j++) {
                $addr = $filler->next();
                $filler->setFrameAt($addr, 2 | ($bit & $code) != 0);
                $bit = $bit >> 1;
            }
        }
        QRtools::markTime('after_filler');
        unset($raw);
        $j = QRspec::getRemainder($version);
        for ($i = 0; $i < $j; $i++) {
            $addr = $filler->next();
            $filler->setFrameAt($addr, 2);
        }
        $frame = $filler->frame;
        unset($filler);
        $maskObj = new QRmask();
        if ($mask < 0) {
            if (QR_FIND_BEST_MASK) {
                $masked = $maskObj->mask($width, $frame, $input->getErrorCorrectionLevel());
            } else {
                $masked = $maskObj->makeMask($width, $frame, intval(QR_DEFAULT_MASK) % 8, $input->getErrorCorrectionLevel());
            }
        } else {
            $masked = $maskObj->makeMask($width, $frame, $mask, $input->getErrorCorrectionLevel());
        }
        if ($masked == NULL) {
            return NULL;
        }
        QRtools::markTime('after_mask');
        $this->version = $version;
        $this->width = $width;
        $this->data = $masked;
        return $this;
    }
    public function encodeInput(QRinput $input)
    {
        return $this->encodeMask($input, -1);
    }
    public function encodeString8bit($string, $version, $level)
    {
        if (string == NULL) {
            throw new Exception('empty string!');
            return NULL;
        }
        $input = new QRinput($version, $level);
        if ($input == NULL) {
            return NULL;
        }
        $ret = $input->append($input, QR_MODE_8, strlen($string), str_split($string));
        if ($ret < 0) {
            unset($input);
            return NULL;
        }
        return $this->encodeInput($input);
    }
    public function encodeString($string, $version, $level, $hint, $casesensitive)
    {
        if ($hint != QR_MODE_8 && $hint != QR_MODE_KANJI) {
            throw new Exception('bad hint');
            return NULL;
        }
        $input = new QRinput($version, $level);
        if ($input == NULL) {
            return NULL;
        }
        $ret = QRsplit::splitStringToQRinput($string, $input, $hint, $casesensitive);
        if ($ret < 0) {
            return NULL;
        }
        return $this->encodeInput($input);
    }
    public static function png($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint = false)
    {
        $enc = QRencode::factory($level, $size, $margin);
        return $enc->encodePNG($text, $outfile, $saveandprint = false);
    }
    public static function text($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4)
    {
        $enc = QRencode::factory($level, $size, $margin);
        return $enc->encode($text, $outfile);
    }
    public static function raw($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4)
    {
        $enc = QRencode::factory($level, $size, $margin);
        return $enc->encodeRAW($text, $outfile);
    }
}
class FrameFiller
{
    public $width;
    public $frame;
    public $x;
    public $y;
    public $dir;
    public $bit;
    public function __construct($width, &$frame)
    {
        $this->width = $width;
        $this->frame = $frame;
        $this->x = $width - 1;
        $this->y = $width - 1;
        $this->dir = -1;
        $this->bit = -1;
    }
    public function setFrameAt($at, $val)
    {
        $this->frame[$at['y']][$at['x']] = chr($val);
    }
    public function getFrameAt($at)
    {
        return ord($this->frame[$at['y']][$at['x']]);
    }
    public function next()
    {
        do {
            if ($this->bit == -1) {
                $this->bit = 0;
                return array('x' => $this->x, 'y' => $this->y);
            }
            $x = $this->x;
            $y = $this->y;
            $w = $this->width;
            if ($this->bit == 0) {
                $x--;
                $this->bit++;
            } else {
                $x++;
                $y += $this->dir;
                $this->bit--;
            }
            if ($this->dir < 0) {
                if ($y < 0) {
                    $y = 0;
                    $x -= 2;
                    $this->dir = 1;
                    if ($x == 6) {
                        $x--;
                        $y = 9;
                    }
                }
            } else {
                if ($y == $w) {
                    $y = $w - 1;
                    $x -= 2;
                    $this->dir = -1;
                    if ($x == 6) {
                        $x--;
                        $y -= 8;
                    }
                }
            }
            if ($x < 0 || $y < 0) {
                return NULL;
            }
            $this->x = $x;
            $this->y = $y;
        } while (ord($this->frame[$y][$x]) & 128);
        return array('x' => $x, 'y' => $y);
    }
}
class QRencode
{
    public $casesensitive = true;
    public $eightbit = false;
    public $version = 0;
    public $size = 3;
    public $margin = 4;
    public $structured = 0;
    public $level = QR_ECLEVEL_L;
    public $hint = QR_MODE_8;
    public static function factory($level = QR_ECLEVEL_L, $size = 3, $margin = 4)
    {
        $enc = new QRencode();
        $enc->size = $size;
        $enc->margin = $margin;
        switch ($level . '') {
            case '0':
            case '1':
            case '2':
            case '3':
                $enc->level = $level;
                break;
            case 'l':
            case 'L':
                $enc->level = QR_ECLEVEL_L;
                break;
            case 'm':
            case 'M':
                $enc->level = QR_ECLEVEL_M;
                break;
            case 'q':
            case 'Q':
                $enc->level = QR_ECLEVEL_Q;
                break;
            case 'h':
            case 'H':
                $enc->level = QR_ECLEVEL_H;
                break;
        }
        $level . '';
        return $enc;
    }
    public function encodeRAW($intext, $outfile = false)
    {
        $code = new QRcode();
        if ($this->eightbit) {
            $code->encodeString8bit($intext, $this->version, $this->level);
        } else {
            $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
        }
        return $code->data;
    }
    public function encode($intext, $outfile = false)
    {
        $code = new QRcode();
        if ($this->eightbit) {
            $code->encodeString8bit($intext, $this->version, $this->level);
        } else {
            $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
        }
        QRtools::markTime('after_encode');
        if ($outfile !== false) {
            file_put_contents($outfile, join("\n", QRtools::binarize($code->data)));
        } else {
            return QRtools::binarize($code->data);
        }
    }
    public function encodePNG($intext, $outfile = false, $saveandprint = false)
    {
        try {
            ob_start();
            $tab = $this->encode($intext);
            $err = ob_get_contents();
            ob_end_clean();
            if ($err != '') {
                QRtools::log($outfile, $err);
            }
            $maxSize = (int) QR_PNG_MAXIMUM_SIZE / (count($tab) + 2 * $this->margin);
            QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin, $saveandprint);
        } catch (Exception $e) {
            QRtools::log($outfile, $e->getMessage());
        }
    }
}