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729 lines
24 KiB
PHP
729 lines
24 KiB
PHP
<?php
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/*
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* PHP QR Code encoder
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*
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* Input encoding class
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*
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* Based on libqrencode C library distributed under LGPL 2.1
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* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>
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*
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* PHP QR Code is distributed under LGPL 3
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* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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define('STRUCTURE_HEADER_BITS', 20);
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define('MAX_STRUCTURED_SYMBOLS', 16);
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class QRinputItem {
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public $mode;
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public $size;
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public $data;
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public $bstream;
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public function __construct($mode, $size, $data, $bstream = null)
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{
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$setData = array_slice($data, 0, $size);
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if (count($setData) < $size) {
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$setData = array_merge($setData, array_fill(0,$size-count($setData),0));
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}
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if(!QRinput::check($mode, $size, $setData)) {
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throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',',$setData));
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return null;
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}
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$this->mode = $mode;
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$this->size = $size;
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$this->data = $setData;
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$this->bstream = $bstream;
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}
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//----------------------------------------------------------------------
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public function encodeModeNum($version)
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{
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try {
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$words = (int)($this->size / 3);
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$bs = new QRbitstream();
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$val = 0x1;
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$bs->appendNum(4, $val);
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$bs->appendNum(QRspec::lengthIndicator(QR_MODE_NUM, $version), $this->size);
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for($i=0; $i<$words; $i++) {
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$val = (ord($this->data[$i*3 ]) - ord('0')) * 100;
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$val += (ord($this->data[$i*3+1]) - ord('0')) * 10;
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$val += (ord($this->data[$i*3+2]) - ord('0'));
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$bs->appendNum(10, $val);
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}
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if($this->size - $words * 3 == 1) {
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$val = ord($this->data[$words*3]) - ord('0');
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$bs->appendNum(4, $val);
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} else if($this->size - $words * 3 == 2) {
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$val = (ord($this->data[$words*3 ]) - ord('0')) * 10;
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$val += (ord($this->data[$words*3+1]) - ord('0'));
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$bs->appendNum(7, $val);
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}
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$this->bstream = $bs;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function encodeModeAn($version)
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{
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try {
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$words = (int)($this->size / 2);
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$bs = new QRbitstream();
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$bs->appendNum(4, 0x02);
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$bs->appendNum(QRspec::lengthIndicator(QR_MODE_AN, $version), $this->size);
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for($i=0; $i<$words; $i++) {
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$val = (int)QRinput::lookAnTable(ord($this->data[$i*2 ])) * 45;
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$val += (int)QRinput::lookAnTable(ord($this->data[$i*2+1]));
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$bs->appendNum(11, $val);
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}
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if($this->size & 1) {
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$val = QRinput::lookAnTable(ord($this->data[$words * 2]));
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$bs->appendNum(6, $val);
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}
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$this->bstream = $bs;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function encodeMode8($version)
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{
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try {
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$bs = new QRbitstream();
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$bs->appendNum(4, 0x4);
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$bs->appendNum(QRspec::lengthIndicator(QR_MODE_8, $version), $this->size);
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for($i=0; $i<$this->size; $i++) {
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$bs->appendNum(8, ord($this->data[$i]));
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}
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$this->bstream = $bs;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function encodeModeKanji($version)
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{
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try {
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$bs = new QRbitrtream();
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$bs->appendNum(4, 0x8);
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$bs->appendNum(QRspec::lengthIndicator(QR_MODE_KANJI, $version), (int)($this->size / 2));
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for($i=0; $i<$this->size; $i+=2) {
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$val = (ord($this->data[$i]) << 8) | ord($this->data[$i+1]);
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if($val <= 0x9ffc) {
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$val -= 0x8140;
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} else {
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$val -= 0xc140;
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}
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$h = ($val >> 8) * 0xc0;
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$val = ($val & 0xff) + $h;
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$bs->appendNum(13, $val);
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}
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$this->bstream = $bs;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function encodeModeStructure()
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{
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try {
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$bs = new QRbitstream();
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$bs->appendNum(4, 0x03);
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$bs->appendNum(4, ord($this->data[1]) - 1);
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$bs->appendNum(4, ord($this->data[0]) - 1);
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$bs->appendNum(8, ord($this->data[2]));
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$this->bstream = $bs;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function estimateBitStreamSizeOfEntry($version)
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{
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$bits = 0;
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if($version == 0)
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$version = 1;
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switch($this->mode) {
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case QR_MODE_NUM: $bits = QRinput::estimateBitsModeNum($this->size); break;
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case QR_MODE_AN: $bits = QRinput::estimateBitsModeAn($this->size); break;
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case QR_MODE_8: $bits = QRinput::estimateBitsMode8($this->size); break;
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case QR_MODE_KANJI: $bits = QRinput::estimateBitsModeKanji($this->size);break;
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case QR_MODE_STRUCTURE: return STRUCTURE_HEADER_BITS;
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default:
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return 0;
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}
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$l = QRspec::lengthIndicator($this->mode, $version);
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$m = 1 << $l;
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$num = (int)(($this->size + $m - 1) / $m);
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$bits += $num * (4 + $l);
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return $bits;
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}
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//----------------------------------------------------------------------
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public function encodeBitStream($version)
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{
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try {
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unset($this->bstream);
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$words = QRspec::maximumWords($this->mode, $version);
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if($this->size > $words) {
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$st1 = new QRinputItem($this->mode, $words, $this->data);
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$st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));
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$st1->encodeBitStream($version);
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$st2->encodeBitStream($version);
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$this->bstream = new QRbitstream();
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$this->bstream->append($st1->bstream);
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$this->bstream->append($st2->bstream);
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unset($st1);
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unset($st2);
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} else {
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$ret = 0;
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switch($this->mode) {
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case QR_MODE_NUM: $ret = $this->encodeModeNum($version); break;
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case QR_MODE_AN: $ret = $this->encodeModeAn($version); break;
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case QR_MODE_8: $ret = $this->encodeMode8($version); break;
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case QR_MODE_KANJI: $ret = $this->encodeModeKanji($version);break;
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case QR_MODE_STRUCTURE: $ret = $this->encodeModeStructure(); break;
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default:
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break;
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}
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if($ret < 0)
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return -1;
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}
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return $this->bstream->size();
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} catch (Exception $e) {
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return -1;
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}
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}
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};
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//##########################################################################
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class QRinput {
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public $items;
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private $version;
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private $level;
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//----------------------------------------------------------------------
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public function __construct($version = 0, $level = QR_ECLEVEL_L)
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{
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if ($version < 0 || $version > QRSPEC_VERSION_MAX || $level > QR_ECLEVEL_H) {
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throw new Exception('Invalid version no');
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return NULL;
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}
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$this->version = $version;
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$this->level = $level;
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}
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//----------------------------------------------------------------------
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public function getVersion()
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{
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return $this->version;
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}
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//----------------------------------------------------------------------
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public function setVersion($version)
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{
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if($version < 0 || $version > QRSPEC_VERSION_MAX) {
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throw new Exception('Invalid version no');
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return -1;
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}
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$this->version = $version;
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return 0;
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}
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//----------------------------------------------------------------------
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public function getErrorCorrectionLevel()
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{
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return $this->level;
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}
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//----------------------------------------------------------------------
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public function setErrorCorrectionLevel($level)
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{
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if($level > QR_ECLEVEL_H) {
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throw new Exception('Invalid ECLEVEL');
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return -1;
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}
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$this->level = $level;
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return 0;
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}
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//----------------------------------------------------------------------
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public function appendEntry(QRinputItem $entry)
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{
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$this->items[] = $entry;
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}
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//----------------------------------------------------------------------
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public function append($mode, $size, $data)
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{
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try {
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$entry = new QRinputItem($mode, $size, $data);
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$this->items[] = $entry;
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function insertStructuredAppendHeader($size, $index, $parity)
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{
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if( $size > MAX_STRUCTURED_SYMBOLS ) {
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throw new Exception('insertStructuredAppendHeader wrong size');
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}
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if( $index <= 0 || $index > MAX_STRUCTURED_SYMBOLS ) {
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throw new Exception('insertStructuredAppendHeader wrong index');
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}
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$buf = array($size, $index, $parity);
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try {
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$entry = new QRinputItem(QR_MODE_STRUCTURE, 3, buf);
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array_unshift($this->items, $entry);
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return 0;
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} catch (Exception $e) {
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return -1;
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}
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}
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//----------------------------------------------------------------------
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public function calcParity()
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{
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$parity = 0;
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foreach($this->items as $item) {
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if($item->mode != QR_MODE_STRUCTURE) {
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for($i=$item->size-1; $i>=0; $i--) {
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$parity ^= $item->data[$i];
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}
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}
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}
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return $parity;
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}
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//----------------------------------------------------------------------
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public static function checkModeNum($size, $data)
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{
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for($i=0; $i<$size; $i++) {
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if((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))){
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return false;
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}
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}
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return true;
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}
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//----------------------------------------------------------------------
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public static function estimateBitsModeNum($size)
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{
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$w = (int)$size / 3;
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$bits = $w * 10;
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switch($size - $w * 3) {
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case 1:
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$bits += 4;
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break;
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case 2:
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$bits += 7;
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break;
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default:
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break;
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}
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return $bits;
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}
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//----------------------------------------------------------------------
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public static $anTable = array(
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1,
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-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
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25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
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);
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//----------------------------------------------------------------------
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public static function lookAnTable($c)
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{
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return (($c > 127)?-1:self::$anTable[$c]);
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}
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//----------------------------------------------------------------------
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public static function checkModeAn($size, $data)
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{
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for($i=0; $i<$size; $i++) {
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if (self::lookAnTable(ord($data[$i])) == -1) {
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return false;
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}
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}
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return true;
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}
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//----------------------------------------------------------------------
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public static function estimateBitsModeAn($size)
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{
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$w = (int)($size / 2);
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$bits = $w * 11;
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if($size & 1) {
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$bits += 6;
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}
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return $bits;
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}
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//----------------------------------------------------------------------
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public static function estimateBitsMode8($size)
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{
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return $size * 8;
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}
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//----------------------------------------------------------------------
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public function estimateBitsModeKanji($size)
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{
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return (int)(($size / 2) * 13);
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}
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//----------------------------------------------------------------------
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public static function checkModeKanji($size, $data)
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{
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if($size & 1)
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return false;
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for($i=0; $i<$size; $i+=2) {
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$val = (ord($data[$i]) << 8) | ord($data[$i+1]);
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if( $val < 0x8140
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|| ($val > 0x9ffc && $val < 0xe040)
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|| $val > 0xebbf) {
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return false;
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}
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}
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return true;
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}
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/***********************************************************************
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* Validation
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**********************************************************************/
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public static function check($mode, $size, $data)
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{
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if($size <= 0)
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return false;
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switch($mode) {
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case QR_MODE_NUM: return self::checkModeNum($size, $data); break;
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case QR_MODE_AN: return self::checkModeAn($size, $data); break;
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case QR_MODE_KANJI: return self::checkModeKanji($size, $data); break;
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case QR_MODE_8: return true; break;
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case QR_MODE_STRUCTURE: return true; break;
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default:
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break;
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}
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return false;
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}
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//----------------------------------------------------------------------
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public function estimateBitStreamSize($version)
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{
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$bits = 0;
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foreach($this->items as $item) {
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$bits += $item->estimateBitStreamSizeOfEntry($version);
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}
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return $bits;
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}
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//----------------------------------------------------------------------
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public function estimateVersion()
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{
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$version = 0;
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$prev = 0;
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do {
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$prev = $version;
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$bits = $this->estimateBitStreamSize($prev);
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$version = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
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if ($version < 0) {
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return -1;
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}
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} while ($version > $prev);
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return $version;
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}
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//----------------------------------------------------------------------
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public static function lengthOfCode($mode, $version, $bits)
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{
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$payload = $bits - 4 - QRspec::lengthIndicator($mode, $version);
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switch($mode) {
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case QR_MODE_NUM:
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$chunks = (int)($payload / 10);
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$remain = $payload - $chunks * 10;
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$size = $chunks * 3;
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if($remain >= 7) {
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$size += 2;
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} else if($remain >= 4) {
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$size += 1;
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}
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break;
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case QR_MODE_AN:
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$chunks = (int)($payload / 11);
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$remain = $payload - $chunks * 11;
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$size = $chunks * 2;
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if($remain >= 6)
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$size++;
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break;
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case QR_MODE_8:
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$size = (int)($payload / 8);
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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();
|
|
}
|
|
}
|
|
|
|
|
|
|