diff options
Diffstat (limited to 'lib/phpqrcode/qrinput.php')
| -rw-r--r-- | lib/phpqrcode/qrinput.php | 729 |
1 files changed, 729 insertions, 0 deletions
diff --git a/lib/phpqrcode/qrinput.php b/lib/phpqrcode/qrinput.php new file mode 100644 index 000000000..0f6d7f944 --- /dev/null +++ b/lib/phpqrcode/qrinput.php @@ -0,0 +1,729 @@ +<?php
+/*
+ * PHP QR Code encoder
+ *
+ * Input encoding class
+ *
+ * Based on libqrencode C library distributed under LGPL 2.1
+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
+ *
+ * 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
+ */
+
+ define('STRUCTURE_HEADER_BITS', 20);
+ define('MAX_STRUCTURED_SYMBOLS', 16);
+
+ class QRinputItem {
+
+ public $mode;
+ public $size;
+ public $data;
+ public $bstream;
+
+ public function __construct($mode, $size, $data, $bstream = null)
+ {
+ $setData = array_slice($data, 0, $size);
+
+ if (count($setData) < $size) {
+ $setData = array_merge($setData, array_fill(0,$size-count($setData),0));
+ }
+
+ if(!QRinput::check($mode, $size, $setData)) {
+ throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',',$setData));
+ return null;
+ }
+
+ $this->mode = $mode;
+ $this->size = $size;
+ $this->data = $setData;
+ $this->bstream = $bstream;
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeModeNum($version)
+ {
+ try {
+
+ $words = (int)($this->size / 3);
+ $bs = new QRbitstream();
+
+ $val = 0x1;
+ $bs->appendNum(4, $val);
+ $bs->appendNum(QRspec::lengthIndicator(QR_MODE_NUM, $version), $this->size);
+
+ for($i=0; $i<$words; $i++) {
+ $val = (ord($this->data[$i*3 ]) - ord('0')) * 100;
+ $val += (ord($this->data[$i*3+1]) - ord('0')) * 10;
+ $val += (ord($this->data[$i*3+2]) - ord('0'));
+ $bs->appendNum(10, $val);
+ }
+
+ if($this->size - $words * 3 == 1) {
+ $val = ord($this->data[$words*3]) - ord('0');
+ $bs->appendNum(4, $val);
+ } else if($this->size - $words * 3 == 2) {
+ $val = (ord($this->data[$words*3 ]) - ord('0')) * 10;
+ $val += (ord($this->data[$words*3+1]) - ord('0'));
+ $bs->appendNum(7, $val);
+ }
+
+ $this->bstream = $bs;
+ return 0;
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeModeAn($version)
+ {
+ try {
+ $words = (int)($this->size / 2);
+ $bs = new QRbitstream();
+
+ $bs->appendNum(4, 0x02);
+ $bs->appendNum(QRspec::lengthIndicator(QR_MODE_AN, $version), $this->size);
+
+ for($i=0; $i<$words; $i++) {
+ $val = (int)QRinput::lookAnTable(ord($this->data[$i*2 ])) * 45;
+ $val += (int)QRinput::lookAnTable(ord($this->data[$i*2+1]));
+
+ $bs->appendNum(11, $val);
+ }
+
+ if($this->size & 1) {
+ $val = QRinput::lookAnTable(ord($this->data[$words * 2]));
+ $bs->appendNum(6, $val);
+ }
+
+ $this->bstream = $bs;
+ return 0;
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeMode8($version)
+ {
+ try {
+ $bs = new QRbitstream();
+
+ $bs->appendNum(4, 0x4);
+ $bs->appendNum(QRspec::lengthIndicator(QR_MODE_8, $version), $this->size);
+
+ for($i=0; $i<$this->size; $i++) {
+ $bs->appendNum(8, ord($this->data[$i]));
+ }
+
+ $this->bstream = $bs;
+ return 0;
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeModeKanji($version)
+ {
+ try {
+
+ $bs = new QRbitrtream();
+
+ $bs->appendNum(4, 0x8);
+ $bs->appendNum(QRspec::lengthIndicator(QR_MODE_KANJI, $version), (int)($this->size / 2));
+
+ for($i=0; $i<$this->size; $i+=2) {
+ $val = (ord($this->data[$i]) << 8) | ord($this->data[$i+1]);
+ if($val <= 0x9ffc) {
+ $val -= 0x8140;
+ } else {
+ $val -= 0xc140;
+ }
+
+ $h = ($val >> 8) * 0xc0;
+ $val = ($val & 0xff) + $h;
+
+ $bs->appendNum(13, $val);
+ }
+
+ $this->bstream = $bs;
+ return 0;
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeModeStructure()
+ {
+ try {
+ $bs = new QRbitstream();
+
+ $bs->appendNum(4, 0x03);
+ $bs->appendNum(4, ord($this->data[1]) - 1);
+ $bs->appendNum(4, ord($this->data[0]) - 1);
+ $bs->appendNum(8, ord($this->data[2]));
+
+ $this->bstream = $bs;
+ return 0;
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function estimateBitStreamSizeOfEntry($version)
+ {
+ $bits = 0;
+
+ if($version == 0)
+ $version = 1;
+
+ switch($this->mode) {
+ case QR_MODE_NUM: $bits = QRinput::estimateBitsModeNum($this->size); break;
+ case QR_MODE_AN: $bits = QRinput::estimateBitsModeAn($this->size); break;
+ case QR_MODE_8: $bits = QRinput::estimateBitsMode8($this->size); break;
+ case QR_MODE_KANJI: $bits = QRinput::estimateBitsModeKanji($this->size);break;
+ case QR_MODE_STRUCTURE: return STRUCTURE_HEADER_BITS;
+ default:
+ return 0;
+ }
+
+ $l = QRspec::lengthIndicator($this->mode, $version);
+ $m = 1 << $l;
+ $num = (int)(($this->size + $m - 1) / $m);
+
+ $bits += $num * (4 + $l);
+
+ return $bits;
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeBitStream($version)
+ {
+ try {
+
+ unset($this->bstream);
+ $words = QRspec::maximumWords($this->mode, $version);
+
+ if($this->size > $words) {
+
+ $st1 = new QRinputItem($this->mode, $words, $this->data);
+ $st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));
+
+ $st1->encodeBitStream($version);
+ $st2->encodeBitStream($version);
+
+ $this->bstream = new QRbitstream();
+ $this->bstream->append($st1->bstream);
+ $this->bstream->append($st2->bstream);
+
+ unset($st1);
+ unset($st2);
+
+ } else {
+
+ $ret = 0;
+
+ switch($this->mode) {
+ case QR_MODE_NUM: $ret = $this->encodeModeNum($version); break;
+ case QR_MODE_AN: $ret = $this->encodeModeAn($version); break;
+ case QR_MODE_8: $ret = $this->encodeMode8($version); break;
+ case QR_MODE_KANJI: $ret = $this->encodeModeKanji($version);break;
+ case QR_MODE_STRUCTURE: $ret = $this->encodeModeStructure(); break;
+
+ default:
+ break;
+ }
+
+ if($ret < 0)
+ return -1;
+ }
+
+ return $this->bstream->size();
+
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+ };
+
+ //##########################################################################
+
+ class QRinput {
+
+ public $items;
+
+ private $version;
+ private $level;
+
+ //----------------------------------------------------------------------
+ public function __construct($version = 0, $level = QR_ECLEVEL_L)
+ {
+ if ($version < 0 || $version > QRSPEC_VERSION_MAX || $level > QR_ECLEVEL_H) {
+ throw new Exception('Invalid version no');
+ return NULL;
+ }
+
+ $this->version = $version;
+ $this->level = $level;
+ }
+
+ //----------------------------------------------------------------------
+ public function getVersion()
+ {
+ return $this->version;
+ }
+
+ //----------------------------------------------------------------------
+ public function setVersion($version)
+ {
+ if($version < 0 || $version > QRSPEC_VERSION_MAX) {
+ throw new Exception('Invalid version no');
+ return -1;
+ }
+
+ $this->version = $version;
+
+ return 0;
+ }
+
+ //----------------------------------------------------------------------
+ public function getErrorCorrectionLevel()
+ {
+ return $this->level;
+ }
+
+ //----------------------------------------------------------------------
+ public function setErrorCorrectionLevel($level)
+ {
+ if($level > QR_ECLEVEL_H) {
+ throw new Exception('Invalid ECLEVEL');
+ return -1;
+ }
+
+ $this->level = $level;
+
+ return 0;
+ }
+
+ //----------------------------------------------------------------------
+ public function appendEntry(QRinputItem $entry)
+ {
+ $this->items[] = $entry;
+ }
+
+ //----------------------------------------------------------------------
+ public function append($mode, $size, $data)
+ {
+ try {
+ $entry = new QRinputItem($mode, $size, $data);
+ $this->items[] = $entry;
+ return 0;
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+
+ public function insertStructuredAppendHeader($size, $index, $parity)
+ {
+ if( $size > MAX_STRUCTURED_SYMBOLS ) {
+ throw new Exception('insertStructuredAppendHeader wrong size');
+ }
+
+ if( $index <= 0 || $index > MAX_STRUCTURED_SYMBOLS ) {
+ throw new Exception('insertStructuredAppendHeader wrong index');
+ }
+
+ $buf = array($size, $index, $parity);
+
+ try {
+ $entry = new QRinputItem(QR_MODE_STRUCTURE, 3, buf);
+ array_unshift($this->items, $entry);
+ return 0;
+ } catch (Exception $e) {
+ return -1;
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function calcParity()
+ {
+ $parity = 0;
+
+ foreach($this->items as $item) {
+ if($item->mode != QR_MODE_STRUCTURE) {
+ for($i=$item->size-1; $i>=0; $i--) {
+ $parity ^= $item->data[$i];
+ }
+ }
+ }
+
+ return $parity;
+ }
+
+ //----------------------------------------------------------------------
+ public static function checkModeNum($size, $data)
+ {
+ for($i=0; $i<$size; $i++) {
+ if((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))){
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ //----------------------------------------------------------------------
+ public static function estimateBitsModeNum($size)
+ {
+ $w = (int)$size / 3;
+ $bits = $w * 10;
+
+ switch($size - $w * 3) {
+ case 1:
+ $bits += 4;
+ break;
+ case 2:
+ $bits += 7;
+ break;
+ default:
+ break;
+ }
+
+ return $bits;
+ }
+
+ //----------------------------------------------------------------------
+ public static $anTable = array(
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1,
+ -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
+ 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+ );
+
+ //----------------------------------------------------------------------
+ public static function lookAnTable($c)
+ {
+ return (($c > 127)?-1:self::$anTable[$c]);
+ }
+
+ //----------------------------------------------------------------------
+ public static function checkModeAn($size, $data)
+ {
+ for($i=0; $i<$size; $i++) {
+ if (self::lookAnTable(ord($data[$i])) == -1) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ //----------------------------------------------------------------------
+ public static function estimateBitsModeAn($size)
+ {
+ $w = (int)($size / 2);
+ $bits = $w * 11;
+
+ if($size & 1) {
+ $bits += 6;
+ }
+
+ return $bits;
+ }
+
+ //----------------------------------------------------------------------
+ public static function estimateBitsMode8($size)
+ {
+ return $size * 8;
+ }
+
+ //----------------------------------------------------------------------
+ public function estimateBitsModeKanji($size)
+ {
+ return (int)(($size / 2) * 13);
+ }
+
+ //----------------------------------------------------------------------
+ public static function checkModeKanji($size, $data)
+ {
+ if($size & 1)
+ return false;
+
+ for($i=0; $i<$size; $i+=2) {
+ $val = (ord($data[$i]) << 8) | ord($data[$i+1]);
+ if( $val < 0x8140
+ || ($val > 0x9ffc && $val < 0xe040)
+ || $val > 0xebbf) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ /***********************************************************************
+ * Validation
+ **********************************************************************/
+
+ public static function check($mode, $size, $data)
+ {
+ if($size <= 0)
+ return false;
+
+ switch($mode) {
+ case QR_MODE_NUM: return self::checkModeNum($size, $data); break;
+ case QR_MODE_AN: return self::checkModeAn($size, $data); break;
+ case QR_MODE_KANJI: return self::checkModeKanji($size, $data); break;
+ case QR_MODE_8: return true; break;
+ case QR_MODE_STRUCTURE: return true; break;
+
+ default:
+ break;
+ }
+
+ return false;
+ }
+
+
+ //----------------------------------------------------------------------
+ public function estimateBitStreamSize($version)
+ {
+ $bits = 0;
+
+ foreach($this->items as $item) {
+ $bits += $item->estimateBitStreamSizeOfEntry($version);
+ }
+
+ return $bits;
+ }
+
+ //----------------------------------------------------------------------
+ public function estimateVersion()
+ {
+ $version = 0;
+ $prev = 0;
+ do {
+ $prev = $version;
+ $bits = $this->estimateBitStreamSize($prev);
+ $version = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
+ if ($version < 0) {
+ return -1;
+ }
+ } while ($version > $prev);
+
+ return $version;
+ }
+
+ //----------------------------------------------------------------------
+ public static function lengthOfCode($mode, $version, $bits)
+ {
+ $payload = $bits - 4 - QRspec::lengthIndicator($mode, $version);
+ switch($mode) {
+ case QR_MODE_NUM:
+ $chunks = (int)($payload / 10);
+ $remain = $payload - $chunks * 10;
+ $size = $chunks * 3;
+ if($remain >= 7) {
+ $size += 2;
+ } else if($remain >= 4) {
+ $size += 1;
+ }
+ break;
+ case QR_MODE_AN:
+ $chunks = (int)($payload / 11);
+ $remain = $payload - $chunks * 11;
+ $size = $chunks * 2;
+ if($remain >= 6)
+ $size++;
+ break;
+ case QR_MODE_8:
+ $size = (int)($payload / 8);
+ break;
+ case QR_MODE_KANJI:
+ $size = (int)(($payload / 13) * 2);
+ break;
+ case QR_MODE_STRUCTURE:
+ $size = (int)($payload / 8);
+ break;
+ default:
+ $size = 0;
+ break;
+ }
+
+ $maxsize = QRspec::maximumWords($mode, $version);
+ if($size < 0) $size = 0;
+ if($size > $maxsize) $size = $maxsize;
+
+ return $size;
+ }
+
+ //----------------------------------------------------------------------
+ public function createBitStream()
+ {
+ $total = 0;
+
+ foreach($this->items as $item) {
+ $bits = $item->encodeBitStream($this->version);
+
+ if($bits < 0)
+ return -1;
+
+ $total += $bits;
+ }
+
+ return $total;
+ }
+
+ //----------------------------------------------------------------------
+ public function convertData()
+ {
+ $ver = $this->estimateVersion();
+ if($ver > $this->getVersion()) {
+ $this->setVersion($ver);
+ }
+
+ for(;;) {
+ $bits = $this->createBitStream();
+
+ if($bits < 0)
+ return -1;
+
+ $ver = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
+ if($ver < 0) {
+ throw new Exception('WRONG VERSION');
+ return -1;
+ } else if($ver > $this->getVersion()) {
+ $this->setVersion($ver);
+ } else {
+ break;
+ }
+ }
+
+ return 0;
+ }
+
+ //----------------------------------------------------------------------
+ public function appendPaddingBit(&$bstream)
+ {
+ $bits = $bstream->size();
+ $maxwords = QRspec::getDataLength($this->version, $this->level);
+ $maxbits = $maxwords * 8;
+
+ if ($maxbits == $bits) {
+ return 0;
+ }
+
+ if ($maxbits - $bits < 5) {
+ return $bstream->appendNum($maxbits - $bits, 0);
+ }
+
+ $bits += 4;
+ $words = (int)(($bits + 7) / 8);
+
+ $padding = new QRbitstream();
+ $ret = $padding->appendNum($words * 8 - $bits + 4, 0);
+
+ if($ret < 0)
+ return $ret;
+
+ $padlen = $maxwords - $words;
+
+ if($padlen > 0) {
+
+ $padbuf = array();
+ for($i=0; $i<$padlen; $i++) {
+ $padbuf[$i] = ($i&1)?0x11:0xec;
+ }
+
+ $ret = $padding->appendBytes($padlen, $padbuf);
+
+ if($ret < 0)
+ return $ret;
+
+ }
+
+ $ret = $bstream->append($padding);
+
+ return $ret;
+ }
+
+ //----------------------------------------------------------------------
+ public function mergeBitStream()
+ {
+ if($this->convertData() < 0) {
+ return null;
+ }
+
+ $bstream = new QRbitstream();
+
+ foreach($this->items as $item) {
+ $ret = $bstream->append($item->bstream);
+ if($ret < 0) {
+ return null;
+ }
+ }
+
+ return $bstream;
+ }
+
+ //----------------------------------------------------------------------
+ public function getBitStream()
+ {
+
+ $bstream = $this->mergeBitStream();
+
+ if($bstream == null) {
+ return null;
+ }
+
+ $ret = $this->appendPaddingBit($bstream);
+ if($ret < 0) {
+ return null;
+ }
+
+ return $bstream;
+ }
+
+ //----------------------------------------------------------------------
+ public function getByteStream()
+ {
+ $bstream = $this->getBitStream();
+ if($bstream == null) {
+ return null;
+ }
+
+ return $bstream->toByte();
+ }
+ }
+
+
+
\ No newline at end of file |