strip_harmful_tags: remove data- attributes

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

<?php\r
/*\r
 * PHP QR Code encoder\r
 *\r
 * Bitstream class\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 QRbitstream {\r
    \r
        public $data = array();\r
        \r
        //----------------------------------------------------------------------\r
        public function size()\r
        {\r
            return count($this->data);\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function allocate($setLength)\r
        {\r
            $this->data = array_fill(0, $setLength, 0);\r
            return 0;\r
        }\r
    \r
        //----------------------------------------------------------------------\r
        public static function newFromNum($bits, $num)\r
        {\r
            $bstream = new QRbitstream();\r
            $bstream->allocate($bits);\r
            \r
            $mask = 1 << ($bits - 1);\r
            for($i=0; $i<$bits; $i++) {\r
                if($num & $mask) {\r
                    $bstream->data[$i] = 1;\r
                } else {\r
                    $bstream->data[$i] = 0;\r
                }\r
                $mask = $mask >> 1;\r
            }\r
\r
            return $bstream;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public static function newFromBytes($size, $data)\r
        {\r
            $bstream = new QRbitstream();\r
            $bstream->allocate($size * 8);\r
            $p=0;\r
\r
            for($i=0; $i<$size; $i++) {\r
                $mask = 0x80;\r
                for($j=0; $j<8; $j++) {\r
                    if($data[$i] & $mask) {\r
                        $bstream->data[$p] = 1;\r
                    } else {\r
                        $bstream->data[$p] = 0;\r
                    }\r
                    $p++;\r
                    $mask = $mask >> 1;\r
                }\r
            }\r
\r
            return $bstream;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function append(QRbitstream $arg)\r
        {\r
            if (is_null($arg)) {\r
                return -1;\r
            }\r
            \r
            if($arg->size() == 0) {\r
                return 0;\r
            }\r
            \r
            if($this->size() == 0) {\r
                $this->data = $arg->data;\r
                return 0;\r
            }\r
            \r
            $this->data = array_values(array_merge($this->data, $arg->data));\r
\r
            return 0;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function appendNum($bits, $num)\r
        {\r
            if ($bits == 0) \r
                return 0;\r
\r
            $b = QRbitstream::newFromNum($bits, $num);\r
            \r
            if(is_null($b))\r
                return -1;\r
\r
            $ret = $this->append($b);\r
            unset($b);\r
\r
            return $ret;\r
        }\r
\r
        //----------------------------------------------------------------------\r
        public function appendBytes($size, $data)\r
        {\r
            if ($size == 0) \r
                return 0;\r
\r
            $b = QRbitstream::newFromBytes($size, $data);\r
            \r
            if(is_null($b))\r
                return -1;\r
\r
            $ret = $this->append($b);\r
            unset($b);\r
\r
            return $ret;\r
        }\r
        \r
        //----------------------------------------------------------------------\r
        public function toByte()\r
        {\r
        \r
            $size = $this->size();\r
\r
            if($size == 0) {\r
                return array();\r
            }\r
            \r
            $data = array_fill(0, (int)(($size + 7) / 8), 0);\r
            $bytes = (int)($size / 8);\r
\r
            $p = 0;\r
            \r
            for($i=0; $i<$bytes; $i++) {\r
                $v = 0;\r
                for($j=0; $j<8; $j++) {\r
                    $v = $v << 1;\r
                    $v |= $this->data[$p];\r
                    $p++;\r
                }\r
                $data[$i] = $v;\r
            }\r
            \r
            if($size & 7) {\r
                $v = 0;\r
                for($j=0; $j<($size & 7); $j++) {\r
                    $v = $v << 1;\r
                    $v |= $this->data[$p];\r
                    $p++;\r
                }\r
                $data[$bytes] = $v;\r
            }\r
\r
            return $data;\r
        }\r
\r
    }\r