pngcrush.sh

[tt-rss.git] / lib / phpqrcode / qrencode.php

<?php\r
/*\r
 * PHP QR Code encoder\r
 *\r
 * Main encoder classes.\r
 *\r
 * Based on libqrencode C library distributed under LGPL 2.1\r
 * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>\r
 *\r
 * PHP QR Code is distributed under LGPL 3\r
 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>\r
 *\r
 * This library is free software; you can redistribute it and/or\r
 * modify it under the terms of the GNU Lesser General Public\r
 * License as published by the Free Software Foundation; either\r
 * version 3 of the License, or any later version.\r
 *\r
 * This library is distributed in the hope that it will be useful,\r
 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r
 * Lesser General Public License for more details.\r
 *\r
 * You should have received a copy of the GNU Lesser General Public\r
 * License along with this library; if not, write to the Free Software\r
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\r
 */\r
 \r
    class QRrsblock {\r
        public $dataLength;\r
        public $data = array();\r
        public $eccLength;\r
        public $ecc = array();\r
        \r
        public function __construct($dl, $data, $el, &$ecc, QRrsItem $rs)\r
        {\r
            $rs->encode_rs_char($data, $ecc);\r
        \r
            $this->dataLength = $dl;\r
            $this->data = $data;\r
            $this->eccLength = $el;\r
            $this->ecc = $ecc;\r
        }\r
    };\r
    \r
    //##########################################################################\r
\r
    class QRrawcode {\r
        public $version;\r
        public $datacode = array();\r
        public $ecccode = array();\r
        public $blocks;\r
        public $rsblocks = array(); //of RSblock\r
        public $count;\r
        public $dataLength;\r
        public $eccLength;\r
        public $b1;\r
        \r
        //----------------------------------------------------------------------\r
        public function __construct(QRinput $input)\r
        {\r
            $spec = array(0,0,0,0,0);\r
            \r
            $this->datacode = $input->getByteStream();\r
            if(is_null($this->datacode)) {\r
                throw new Exception('null imput string');\r
            }\r
\r
            QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);\r
\r
            $this->version = $input->getVersion();\r
            $this->b1 = QRspec::rsBlockNum1($spec);\r
            $this->dataLength = QRspec::rsDataLength($spec);\r
            $this->eccLength = QRspec::rsEccLength($spec);\r
            $this->ecccode = array_fill(0, $this->eccLength, 0);\r
            $this->blocks = QRspec::rsBlockNum($spec);\r
            \r
            $ret = $this->init($spec);\r
            if($ret < 0) {\r
                throw new Exception('block alloc error');\r
                return null;\r
            }\r
\r
            $this->count = 0;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function init(array $spec)\r
        {\r
            $dl = QRspec::rsDataCodes1($spec);\r
            $el = QRspec::rsEccCodes1($spec);\r
            $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);\r
            \r
\r
            $blockNo = 0;\r
            $dataPos = 0;\r
            $eccPos = 0;\r
            for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) {\r
                $ecc = array_slice($this->ecccode,$eccPos);\r
                $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el,  $ecc, $rs);\r
                $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);\r
                \r
                $dataPos += $dl;\r
                $eccPos += $el;\r
                $blockNo++;\r
            }\r
\r
            if(QRspec::rsBlockNum2($spec) == 0)\r
                return 0;\r
\r
            $dl = QRspec::rsDataCodes2($spec);\r
            $el = QRspec::rsEccCodes2($spec);\r
            $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);\r
            \r
            if($rs == NULL) return -1;\r
            \r
            for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) {\r
                $ecc = array_slice($this->ecccode,$eccPos);\r
                $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);\r
                $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);\r
                \r
                $dataPos += $dl;\r
                $eccPos += $el;\r
                $blockNo++;\r
            }\r
\r
            return 0;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function getCode()\r
        {\r
            $ret = 0;\r
\r
            if($this->count < $this->dataLength) {\r
                $row = $this->count % $this->blocks;\r
                $col = $this->count / $this->blocks;\r
                if($col >= $this->rsblocks[0]->dataLength) {\r
                    $row += $this->b1;\r
                }\r
                $ret = $this->rsblocks[$row]->data[$col];\r
            } else if($this->count < $this->dataLength + $this->eccLength) {\r
                $row = ($this->count - $this->dataLength) % $this->blocks;\r
                $col = ($this->count - $this->dataLength) / $this->blocks;\r
                $ret = $this->rsblocks[$row]->ecc[$col];\r
            } else {\r
                return 0;\r
            }\r
            $this->count++;\r
            \r
            return $ret;\r
        }\r
    }\r
\r
    //##########################################################################\r
    \r
    class QRcode {\r
    \r
        public $version;\r
        public $width;\r
        public $data; \r
        \r
        //----------------------------------------------------------------------\r
        public function encodeMask(QRinput $input, $mask)\r
        {\r
            if($input->getVersion() < 0 || $input->getVersion() > QRSPEC_VERSION_MAX) {\r
                throw new Exception('wrong version');\r
            }\r
            if($input->getErrorCorrectionLevel() > QR_ECLEVEL_H) {\r
                throw new Exception('wrong level');\r
            }\r
\r
            $raw = new QRrawcode($input);\r
            \r
            QRtools::markTime('after_raw');\r
            \r
            $version = $raw->version;\r
            $width = QRspec::getWidth($version);\r
            $frame = QRspec::newFrame($version);\r
            \r
            $filler = new FrameFiller($width, $frame);\r
            if(is_null($filler)) {\r
                return NULL;\r
            }\r
\r
            // inteleaved data and ecc codes\r
            for($i=0; $i<$raw->dataLength + $raw->eccLength; $i++) {\r
                $code = $raw->getCode();\r
                $bit = 0x80;\r
                for($j=0; $j<8; $j++) {\r
                    $addr = $filler->next();\r
                    $filler->setFrameAt($addr, 0x02 | (($bit & $code) != 0));\r
                    $bit = $bit >> 1;\r
                }\r
            }\r
            \r
            QRtools::markTime('after_filler');\r
            \r
            unset($raw);\r
            \r
            // remainder bits\r
            $j = QRspec::getRemainder($version);\r
            for($i=0; $i<$j; $i++) {\r
                $addr = $filler->next();\r
                $filler->setFrameAt($addr, 0x02);\r
            }\r
            \r
            $frame = $filler->frame;\r
            unset($filler);\r
            \r
            \r
            // masking\r
            $maskObj = new QRmask();\r
            if($mask < 0) {\r
            \r
                if (QR_FIND_BEST_MASK) {\r
                    $masked = $maskObj->mask($width, $frame, $input->getErrorCorrectionLevel());\r
                } else {\r
                    $masked = $maskObj->makeMask($width, $frame, (intval(QR_DEFAULT_MASK) % 8), $input->getErrorCorrectionLevel());\r
                }\r
            } else {\r
                $masked = $maskObj->makeMask($width, $frame, $mask, $input->getErrorCorrectionLevel());\r
            }\r
            \r
            if($masked == NULL) {\r
                return NULL;\r
            }\r
            \r
            QRtools::markTime('after_mask');\r
            \r
            $this->version = $version;\r
            $this->width = $width;\r
            $this->data = $masked;\r
            \r
            return $this;\r
        }\r
    \r
        //----------------------------------------------------------------------\r
        public function encodeInput(QRinput $input)\r
        {\r
            return $this->encodeMask($input, -1);\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function encodeString8bit($string, $version, $level)\r
        {\r
            if(string == NULL) {\r
                throw new Exception('empty string!');\r
                return NULL;\r
            }\r
\r
            $input = new QRinput($version, $level);\r
            if($input == NULL) return NULL;\r
\r
            $ret = $input->append($input, QR_MODE_8, strlen($string), str_split($string));\r
            if($ret < 0) {\r
                unset($input);\r
                return NULL;\r
            }\r
            return $this->encodeInput($input);\r
        }\r
\r
        //----------------------------------------------------------------------\r
        public function encodeString($string, $version, $level, $hint, $casesensitive)\r
        {\r
\r
            if($hint != QR_MODE_8 && $hint != QR_MODE_KANJI) {\r
                throw new Exception('bad hint');\r
                return NULL;\r
            }\r
\r
            $input = new QRinput($version, $level);\r
            if($input == NULL) return NULL;\r
\r
            $ret = QRsplit::splitStringToQRinput($string, $input, $hint, $casesensitive);\r
            if($ret < 0) {\r
                return NULL;\r
            }\r
\r
            return $this->encodeInput($input);\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public static function png($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false) \r
        {\r
            $enc = QRencode::factory($level, $size, $margin);\r
            return $enc->encodePNG($text, $outfile, $saveandprint=false);\r
        }\r
\r
        //----------------------------------------------------------------------\r
        public static function text($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4) \r
        {\r
            $enc = QRencode::factory($level, $size, $margin);\r
            return $enc->encode($text, $outfile);\r
        }\r
\r
        //----------------------------------------------------------------------\r
        public static function raw($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4) \r
        {\r
            $enc = QRencode::factory($level, $size, $margin);\r
            return $enc->encodeRAW($text, $outfile);\r
        }\r
    }\r
    \r
    //##########################################################################\r
    \r
    class FrameFiller {\r
    \r
        public $width;\r
        public $frame;\r
        public $x;\r
        public $y;\r
        public $dir;\r
        public $bit;\r
        \r
        //----------------------------------------------------------------------\r
        public function __construct($width, &$frame)\r
        {\r
            $this->width = $width;\r
            $this->frame = $frame;\r
            $this->x = $width - 1;\r
            $this->y = $width - 1;\r
            $this->dir = -1;\r
            $this->bit = -1;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function setFrameAt($at, $val)\r
        {\r
            $this->frame[$at['y']][$at['x']] = chr($val);\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function getFrameAt($at)\r
        {\r
            return ord($this->frame[$at['y']][$at['x']]);\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function next()\r
        {\r
            do {\r
            \r
                if($this->bit == -1) {\r
                    $this->bit = 0;\r
                    return array('x'=>$this->x, 'y'=>$this->y);\r
                }\r
\r
                $x = $this->x;\r
                $y = $this->y;\r
                $w = $this->width;\r
\r
                if($this->bit == 0) {\r
                    $x--;\r
                    $this->bit++;\r
                } else {\r
                    $x++;\r
                    $y += $this->dir;\r
                    $this->bit--;\r
                }\r
\r
                if($this->dir < 0) {\r
                    if($y < 0) {\r
                        $y = 0;\r
                        $x -= 2;\r
                        $this->dir = 1;\r
                        if($x == 6) {\r
                            $x--;\r
                            $y = 9;\r
                        }\r
                    }\r
                } else {\r
                    if($y == $w) {\r
                        $y = $w - 1;\r
                        $x -= 2;\r
                        $this->dir = -1;\r
                        if($x == 6) {\r
                            $x--;\r
                            $y -= 8;\r
                        }\r
                    }\r
                }\r
                if($x < 0 || $y < 0) return null;\r
\r
                $this->x = $x;\r
                $this->y = $y;\r
\r
            } while(ord($this->frame[$y][$x]) & 0x80);\r
                        \r
            return array('x'=>$x, 'y'=>$y);\r
        }\r
        \r
    } ;\r
    \r
    //##########################################################################    \r
    \r
    class QRencode {\r
    \r
        public $casesensitive = true;\r
        public $eightbit = false;\r
        \r
        public $version = 0;\r
        public $size = 3;\r
        public $margin = 4;\r
        \r
        public $structured = 0; // not supported yet\r
        \r
        public $level = QR_ECLEVEL_L;\r
        public $hint = QR_MODE_8;\r
        \r
        //----------------------------------------------------------------------\r
        public static function factory($level = QR_ECLEVEL_L, $size = 3, $margin = 4)\r
        {\r
            $enc = new QRencode();\r
            $enc->size = $size;\r
            $enc->margin = $margin;\r
            \r
            switch ($level.'') {\r
                case '0':\r
                case '1':\r
                case '2':\r
                case '3':\r
                        $enc->level = $level;\r
                    break;\r
                case 'l':\r
                case 'L':\r
                        $enc->level = QR_ECLEVEL_L;\r
                    break;\r
                case 'm':\r
                case 'M':\r
                        $enc->level = QR_ECLEVEL_M;\r
                    break;\r
                case 'q':\r
                case 'Q':\r
                        $enc->level = QR_ECLEVEL_Q;\r
                    break;\r
                case 'h':\r
                case 'H':\r
                        $enc->level = QR_ECLEVEL_H;\r
                    break;\r
            }\r
            \r
            return $enc;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function encodeRAW($intext, $outfile = false) \r
        {\r
            $code = new QRcode();\r
\r
            if($this->eightbit) {\r
                $code->encodeString8bit($intext, $this->version, $this->level);\r
            } else {\r
                $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);\r
            }\r
            \r
            return $code->data;\r
        }\r
\r
        //----------------------------------------------------------------------\r
        public function encode($intext, $outfile = false) \r
        {\r
            $code = new QRcode();\r
\r
            if($this->eightbit) {\r
                $code->encodeString8bit($intext, $this->version, $this->level);\r
            } else {\r
                $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);\r
            }\r
            \r
            QRtools::markTime('after_encode');\r
            \r
            if ($outfile!== false) {\r
                file_put_contents($outfile, join("\n", QRtools::binarize($code->data)));\r
            } else {\r
                return QRtools::binarize($code->data);\r
            }\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function encodePNG($intext, $outfile = false,$saveandprint=false) \r
        {\r
            try {\r
            \r
                ob_start();\r
                $tab = $this->encode($intext);\r
                $err = ob_get_contents();\r
                ob_end_clean();\r
                \r
                if ($err != '')\r
                    QRtools::log($outfile, $err);\r
                \r
                $maxSize = (int)(QR_PNG_MAXIMUM_SIZE / (count($tab)+2*$this->margin));\r
                \r
                QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint);\r
            \r
            } catch (Exception $e) {\r
            \r
                QRtools::log($outfile, $e->getMessage());\r
            \r
            }\r
        }\r
    }\r