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<?php
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/*
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3
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* PHP QR Code encoder
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4
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*
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5
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* Input encoding class
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6
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*
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7
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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 <[email protected]>
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9
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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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28
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define('STRUCTURE_HEADER_BITS', 20);
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29
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define('MAX_STRUCTURED_SYMBOLS', 16);
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30
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31
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class QRinputItem {
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32
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33
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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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45
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46
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if (!QRinput::check($mode, $size, $setData)) {
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throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',', $setData));
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return null;
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49
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}
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$this->mode = $mode;
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$this->size = $size;
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$this->data = $setData;
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$this->bstream = $bstream;
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}
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57
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//----------------------------------------------------------------------
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public function encodeModeNum($version)
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{
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try {
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61
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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), $this->size);
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68
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69
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for ($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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88
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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), $this->size);
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103
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for ($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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154
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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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158
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} else {
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$val -= 0xc140;
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160
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}
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161
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162
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$h = ($val >> 8) * 0xc0;
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$val = ($val & 0xff) + $h;
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$bs->appendNum(13, $val);
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}
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168
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$this->bstream = $bs;
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169
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return 0;
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170
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171
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} catch (Exception $e) {
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return -1;
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173
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}
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174
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}
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175
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//----------------------------------------------------------------------
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177
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public function encodeModeStructure()
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178
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{
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179
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try {
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180
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$bs = new QRbitstream();
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181
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182
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$bs->appendNum(4, 0x03);
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$bs->appendNum(4, ord($this->data[1]) - 1);
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184
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$bs->appendNum(4, ord($this->data[0]) - 1);
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$bs->appendNum(8, ord($this->data[2]));
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186
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187
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$this->bstream = $bs;
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188
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return 0;
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189
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190
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} catch (Exception $e) {
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191
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return -1;
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192
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}
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193
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}
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194
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195
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//----------------------------------------------------------------------
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196
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public function estimateBitStreamSizeOfEntry($version)
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197
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{
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198
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$bits = 0;
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199
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200
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if ($version == 0) { |
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201
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$version = 1; |
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202
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} |
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203
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204
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switch ($this->mode) {
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205
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case QR_MODE_NUM: $bits = QRinput::estimateBitsModeNum($this->size); break;
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206
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case QR_MODE_AN: $bits = QRinput::estimateBitsModeAn($this->size); break;
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207
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case QR_MODE_8: $bits = QRinput::estimateBitsMode8($this->size); break;
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208
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case QR_MODE_KANJI: $bits = QRinput::estimateBitsModeKanji($this->size); break;
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209
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case QR_MODE_STRUCTURE: return STRUCTURE_HEADER_BITS;
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210
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default:
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211
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return 0;
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212
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}
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213
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214
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$l = QRspec::lengthIndicator($this->mode, $version);
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215
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$m = 1 << $l;
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216
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$num = (int) (($this->size + $m - 1) / $m);
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217
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218
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$bits += $num * (4 + $l);
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219
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220
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return $bits;
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221
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}
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222
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223
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//----------------------------------------------------------------------
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224
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public function encodeBitStream($version)
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225
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{
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226
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try {
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227
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228
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unset($this->bstream);
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229
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$words = QRspec::maximumWords($this->mode, $version);
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230
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231
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if ($this->size > $words) {
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232
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233
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$st1 = new QRinputItem($this->mode, $words, $this->data);
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234
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$st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));
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235
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236
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$st1->encodeBitStream($version);
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237
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$st2->encodeBitStream($version);
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238
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239
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$this->bstream = new QRbitstream();
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240
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$this->bstream->append($st1->bstream);
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241
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$this->bstream->append($st2->bstream);
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242
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243
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unset($st1);
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244
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unset($st2);
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245
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246
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} else {
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247
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248
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$ret = 0;
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249
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250
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switch ($this->mode) {
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251
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case QR_MODE_NUM: $ret = $this->encodeModeNum($version); break;
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252
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case QR_MODE_AN: $ret = $this->encodeModeAn($version); break;
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253
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case QR_MODE_8: $ret = $this->encodeMode8($version); break;
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254
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case QR_MODE_KANJI: $ret = $this->encodeModeKanji($version); break;
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255
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case QR_MODE_STRUCTURE: $ret = $this->encodeModeStructure(); break;
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256
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|
|
257
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default:
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258
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break;
|
|
259
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}
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260
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|
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261
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if ($ret < 0) { |
|
262
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return -1; |
|
263
|
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} |
|
264
|
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}
|
|
265
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|
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|
|
266
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return $this->bstream->size();
|
|
267
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|
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|
|
268
|
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} catch (Exception $e) {
|
|
269
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return -1;
|
|
270
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}
|
|
271
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}
|
|
272
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};
|
|
273
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|
|
274
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|
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//##########################################################################
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|
275
|
|
|
|
|
276
|
|
|
class QRinput {
|
|
277
|
|
|
|
|
278
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|
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public $items;
|
|
279
|
|
|
|
|
280
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|
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private $version;
|
|
281
|
|
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private $level;
|
|
282
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|
|
|
|
283
|
|
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//----------------------------------------------------------------------
|
|
284
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|
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public function __construct($version = 0, $level = QR_ECLEVEL_L)
|
|
285
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|
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{
|
|
286
|
|
|
if ($version < 0 || $version > QRSPEC_VERSION_MAX || $level > QR_ECLEVEL_H) {
|
|
287
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|
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throw new Exception('Invalid version no');
|
|
288
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|
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return null;
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|
|
|
|
|
|
289
|
|
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}
|
|
290
|
|
|
|
|
291
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|
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$this->version = $version;
|
|
292
|
|
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$this->level = $level;
|
|
293
|
|
|
}
|
|
294
|
|
|
|
|
295
|
|
|
//----------------------------------------------------------------------
|
|
296
|
|
|
public function getVersion()
|
|
297
|
|
|
{
|
|
298
|
|
|
return $this->version;
|
|
299
|
|
|
}
|
|
300
|
|
|
|
|
301
|
|
|
//----------------------------------------------------------------------
|
|
302
|
|
|
public function setVersion($version)
|
|
303
|
|
|
{
|
|
304
|
|
|
if ($version < 0 || $version > QRSPEC_VERSION_MAX) {
|
|
305
|
|
|
throw new Exception('Invalid version no');
|
|
306
|
|
|
return -1;
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|
|
|
|
|
|
307
|
|
|
}
|
|
308
|
|
|
|
|
309
|
|
|
$this->version = $version;
|
|
310
|
|
|
|
|
311
|
|
|
return 0;
|
|
312
|
|
|
}
|
|
313
|
|
|
|
|
314
|
|
|
//----------------------------------------------------------------------
|
|
315
|
|
|
public function getErrorCorrectionLevel()
|
|
316
|
|
|
{
|
|
317
|
|
|
return $this->level;
|
|
318
|
|
|
}
|
|
319
|
|
|
|
|
320
|
|
|
//----------------------------------------------------------------------
|
|
321
|
|
|
public function setErrorCorrectionLevel($level)
|
|
322
|
|
|
{
|
|
323
|
|
|
if ($level > QR_ECLEVEL_H) {
|
|
324
|
|
|
throw new Exception('Invalid ECLEVEL');
|
|
325
|
|
|
return -1;
|
|
|
|
|
|
|
326
|
|
|
}
|
|
327
|
|
|
|
|
328
|
|
|
$this->level = $level;
|
|
329
|
|
|
|
|
330
|
|
|
return 0;
|
|
331
|
|
|
}
|
|
332
|
|
|
|
|
333
|
|
|
//----------------------------------------------------------------------
|
|
334
|
|
|
public function appendEntry(QRinputItem $entry)
|
|
335
|
|
|
{
|
|
336
|
|
|
$this->items[] = $entry;
|
|
337
|
|
|
}
|
|
338
|
|
|
|
|
339
|
|
|
//----------------------------------------------------------------------
|
|
340
|
|
|
public function append($mode, $size, $data)
|
|
341
|
|
|
{
|
|
342
|
|
|
try {
|
|
343
|
|
|
$entry = new QRinputItem($mode, $size, $data);
|
|
344
|
|
|
$this->items[] = $entry;
|
|
345
|
|
|
return 0;
|
|
346
|
|
|
} catch (Exception $e) {
|
|
347
|
|
|
return -1;
|
|
348
|
|
|
}
|
|
349
|
|
|
}
|
|
350
|
|
|
|
|
351
|
|
|
//----------------------------------------------------------------------
|
|
352
|
|
|
|
|
353
|
|
|
public function insertStructuredAppendHeader($size, $index, $parity)
|
|
354
|
|
|
{
|
|
355
|
|
|
if ($size > MAX_STRUCTURED_SYMBOLS) {
|
|
356
|
|
|
throw new Exception('insertStructuredAppendHeader wrong size');
|
|
357
|
|
|
}
|
|
358
|
|
|
|
|
359
|
|
|
if ($index <= 0 || $index > MAX_STRUCTURED_SYMBOLS) {
|
|
360
|
|
|
throw new Exception('insertStructuredAppendHeader wrong index');
|
|
361
|
|
|
}
|
|
362
|
|
|
|
|
363
|
|
|
$buf = array($size, $index, $parity);
|
|
|
|
|
|
|
364
|
|
|
|
|
365
|
|
|
try {
|
|
366
|
|
|
$entry = new QRinputItem(QR_MODE_STRUCTURE, 3, buf);
|
|
|
|
|
|
|
367
|
|
|
array_unshift($this->items, $entry);
|
|
368
|
|
|
return 0;
|
|
369
|
|
|
} catch (Exception $e) {
|
|
370
|
|
|
return -1;
|
|
371
|
|
|
}
|
|
372
|
|
|
}
|
|
373
|
|
|
|
|
374
|
|
|
//----------------------------------------------------------------------
|
|
375
|
|
|
public function calcParity()
|
|
376
|
|
|
{
|
|
377
|
|
|
$parity = 0;
|
|
378
|
|
|
|
|
379
|
|
|
foreach ($this->items as $item) {
|
|
380
|
|
|
if ($item->mode != QR_MODE_STRUCTURE) {
|
|
381
|
|
|
for ($i = $item->size - 1; $i >= 0; $i--) {
|
|
382
|
|
|
$parity ^= $item->data[$i];
|
|
383
|
|
|
}
|
|
384
|
|
|
}
|
|
385
|
|
|
}
|
|
386
|
|
|
|
|
387
|
|
|
return $parity;
|
|
388
|
|
|
}
|
|
389
|
|
|
|
|
390
|
|
|
//----------------------------------------------------------------------
|
|
391
|
|
|
public static function checkModeNum($size, $data)
|
|
392
|
|
|
{
|
|
393
|
|
|
for ($i = 0; $i < $size; $i++) {
|
|
394
|
|
|
if ((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))) {
|
|
395
|
|
|
return false;
|
|
396
|
|
|
}
|
|
397
|
|
|
}
|
|
398
|
|
|
|
|
399
|
|
|
return true;
|
|
400
|
|
|
}
|
|
401
|
|
|
|
|
402
|
|
|
//----------------------------------------------------------------------
|
|
403
|
|
|
public static function estimateBitsModeNum($size)
|
|
404
|
|
|
{
|
|
405
|
|
|
$w = (int) $size / 3;
|
|
406
|
|
|
$bits = $w * 10;
|
|
407
|
|
|
|
|
408
|
|
|
switch ($size - $w * 3) {
|
|
409
|
|
|
case 1:
|
|
410
|
|
|
$bits += 4;
|
|
411
|
|
|
break;
|
|
412
|
|
|
case 2:
|
|
413
|
|
|
$bits += 7;
|
|
414
|
|
|
break;
|
|
415
|
|
|
default:
|
|
416
|
|
|
break;
|
|
417
|
|
|
}
|
|
418
|
|
|
|
|
419
|
|
|
return $bits;
|
|
420
|
|
|
}
|
|
421
|
|
|
|
|
422
|
|
|
//----------------------------------------------------------------------
|
|
423
|
|
|
public static $anTable = array(
|
|
424
|
|
|
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
425
|
|
|
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
426
|
|
|
36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,
|
|
427
|
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1,
|
|
428
|
|
|
-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
|
|
429
|
|
|
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
|
|
430
|
|
|
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
431
|
|
|
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
|
|
432
|
|
|
);
|
|
433
|
|
|
|
|
434
|
|
|
//----------------------------------------------------------------------
|
|
435
|
|
|
public static function lookAnTable($c)
|
|
436
|
|
|
{
|
|
437
|
|
|
return (($c > 127) ?-1 : self::$anTable[$c]);
|
|
438
|
|
|
}
|
|
439
|
|
|
|
|
440
|
|
|
//----------------------------------------------------------------------
|
|
441
|
|
|
public static function checkModeAn($size, $data)
|
|
442
|
|
|
{
|
|
443
|
|
|
for ($i = 0; $i < $size; $i++) {
|
|
444
|
|
|
if (self::lookAnTable(ord($data[$i])) == -1) {
|
|
445
|
|
|
return false;
|
|
446
|
|
|
}
|
|
447
|
|
|
}
|
|
448
|
|
|
|
|
449
|
|
|
return true;
|
|
450
|
|
|
}
|
|
451
|
|
|
|
|
452
|
|
|
//----------------------------------------------------------------------
|
|
453
|
|
|
public static function estimateBitsModeAn($size)
|
|
454
|
|
|
{
|
|
455
|
|
|
$w = (int) ($size / 2);
|
|
456
|
|
|
$bits = $w * 11;
|
|
457
|
|
|
|
|
458
|
|
|
if ($size & 1) {
|
|
459
|
|
|
$bits += 6;
|
|
460
|
|
|
}
|
|
461
|
|
|
|
|
462
|
|
|
return $bits;
|
|
463
|
|
|
}
|
|
464
|
|
|
|
|
465
|
|
|
//----------------------------------------------------------------------
|
|
466
|
|
|
public static function estimateBitsMode8($size)
|
|
467
|
|
|
{
|
|
468
|
|
|
return $size * 8;
|
|
469
|
|
|
}
|
|
470
|
|
|
|
|
471
|
|
|
//----------------------------------------------------------------------
|
|
472
|
|
|
public function estimateBitsModeKanji($size)
|
|
473
|
|
|
{
|
|
474
|
|
|
return (int) (($size / 2) * 13);
|
|
475
|
|
|
}
|
|
476
|
|
|
|
|
477
|
|
|
//----------------------------------------------------------------------
|
|
478
|
|
|
public static function checkModeKanji($size, $data)
|
|
479
|
|
|
{
|
|
480
|
|
|
if ($size & 1) { |
|
481
|
|
|
return false; |
|
482
|
|
|
} |
|
483
|
|
|
|
|
484
|
|
|
for ($i = 0; $i < $size; $i += 2) {
|
|
485
|
|
|
$val = (ord($data[$i]) << 8) | ord($data[$i + 1]);
|
|
486
|
|
|
if ($val < 0x8140
|
|
487
|
|
|
|| ($val > 0x9ffc && $val < 0xe040)
|
|
488
|
|
|
|| $val > 0xebbf) {
|
|
489
|
|
|
return false;
|
|
490
|
|
|
}
|
|
491
|
|
|
}
|
|
492
|
|
|
|
|
493
|
|
|
return true;
|
|
494
|
|
|
}
|
|
495
|
|
|
|
|
496
|
|
|
/***********************************************************************
|
|
497
|
|
|
* Validation
|
|
498
|
|
|
**********************************************************************/
|
|
499
|
|
|
|
|
500
|
|
|
public static function check($mode, $size, $data)
|
|
501
|
|
|
{
|
|
502
|
|
|
if ($size <= 0) { |
|
503
|
|
|
return false; |
|
504
|
|
|
} |
|
505
|
|
|
|
|
506
|
|
|
switch ($mode) {
|
|
507
|
|
|
case QR_MODE_NUM: return self::checkModeNum($size, $data); break;
|
|
|
|
|
|
|
508
|
|
|
case QR_MODE_AN: return self::checkModeAn($size, $data); break;
|
|
509
|
|
|
case QR_MODE_KANJI: return self::checkModeKanji($size, $data); break;
|
|
510
|
|
|
case QR_MODE_8: return true; break;
|
|
511
|
|
|
case QR_MODE_STRUCTURE: return true; break;
|
|
512
|
|
|
|
|
513
|
|
|
default:
|
|
514
|
|
|
break;
|
|
515
|
|
|
}
|
|
516
|
|
|
|
|
517
|
|
|
return false;
|
|
518
|
|
|
}
|
|
519
|
|
|
|
|
520
|
|
|
|
|
521
|
|
|
//----------------------------------------------------------------------
|
|
522
|
|
|
public function estimateBitStreamSize($version)
|
|
523
|
|
|
{
|
|
524
|
|
|
$bits = 0;
|
|
525
|
|
|
|
|
526
|
|
|
foreach ($this->items as $item) {
|
|
527
|
|
|
$bits += $item->estimateBitStreamSizeOfEntry($version);
|
|
528
|
|
|
}
|
|
529
|
|
|
|
|
530
|
|
|
return $bits;
|
|
531
|
|
|
}
|
|
532
|
|
|
|
|
533
|
|
|
//----------------------------------------------------------------------
|
|
534
|
|
|
public function estimateVersion()
|
|
535
|
|
|
{
|
|
536
|
|
|
$version = 0;
|
|
537
|
|
|
$prev = 0;
|
|
|
|
|
|
|
538
|
|
|
do {
|
|
539
|
|
|
$prev = $version;
|
|
540
|
|
|
$bits = $this->estimateBitStreamSize($prev);
|
|
541
|
|
|
$version = QRspec::getMinimumVersion((int) (($bits + 7) / 8), $this->level);
|
|
542
|
|
|
if ($version < 0) {
|
|
543
|
|
|
return -1;
|
|
544
|
|
|
}
|
|
545
|
|
|
} while ($version > $prev);
|
|
546
|
|
|
|
|
547
|
|
|
return $version;
|
|
548
|
|
|
}
|
|
549
|
|
|
|
|
550
|
|
|
//----------------------------------------------------------------------
|
|
551
|
|
|
public static function lengthOfCode($mode, $version, $bits)
|
|
552
|
|
|
{
|
|
553
|
|
|
$payload = $bits - 4 - QRspec::lengthIndicator($mode, $version);
|
|
554
|
|
|
switch ($mode) {
|
|
555
|
|
|
case QR_MODE_NUM:
|
|
556
|
|
|
$chunks = (int) ($payload / 10);
|
|
557
|
|
|
$remain = $payload - $chunks * 10;
|
|
558
|
|
|
$size = $chunks * 3;
|
|
559
|
|
|
if ($remain >= 7) {
|
|
560
|
|
|
$size += 2;
|
|
561
|
|
|
} else if ($remain >= 4) {
|
|
562
|
|
|
$size += 1;
|
|
563
|
|
|
}
|
|
564
|
|
|
break;
|
|
565
|
|
|
case QR_MODE_AN:
|
|
566
|
|
|
$chunks = (int) ($payload / 11);
|
|
567
|
|
|
$remain = $payload - $chunks * 11;
|
|
568
|
|
|
$size = $chunks * 2;
|
|
569
|
|
|
if ($remain >= 6) { |
|
570
|
|
|
$size++; |
|
571
|
|
|
} |
|
572
|
|
|
break;
|
|
573
|
|
|
case QR_MODE_8:
|
|
574
|
|
|
$size = (int) ($payload / 8);
|
|
575
|
|
|
break;
|
|
576
|
|
|
case QR_MODE_KANJI:
|
|
577
|
|
|
$size = (int) (($payload / 13) * 2);
|
|
578
|
|
|
break;
|
|
579
|
|
|
case QR_MODE_STRUCTURE:
|
|
580
|
|
|
$size = (int) ($payload / 8);
|
|
581
|
|
|
break;
|
|
582
|
|
|
default:
|
|
583
|
|
|
$size = 0;
|
|
584
|
|
|
break;
|
|
585
|
|
|
}
|
|
586
|
|
|
|
|
587
|
|
|
$maxsize = QRspec::maximumWords($mode, $version);
|
|
588
|
|
|
if ($size < 0) { |
|
589
|
|
|
$size = 0; |
|
590
|
|
|
} |
|
591
|
|
|
if ($size > $maxsize) { |
|
592
|
|
|
$size = $maxsize; |
|
593
|
|
|
} |
|
594
|
|
|
|
|
595
|
|
|
return $size;
|
|
596
|
|
|
}
|
|
597
|
|
|
|
|
598
|
|
|
//----------------------------------------------------------------------
|
|
599
|
|
|
public function createBitStream()
|
|
600
|
|
|
{
|
|
601
|
|
|
$total = 0;
|
|
602
|
|
|
|
|
603
|
|
|
foreach ($this->items as $item) {
|
|
604
|
|
|
$bits = $item->encodeBitStream($this->version);
|
|
605
|
|
|
|
|
606
|
|
|
if ($bits < 0) { |
|
607
|
|
|
return -1; |
|
608
|
|
|
} |
|
609
|
|
|
|
|
610
|
|
|
$total += $bits;
|
|
611
|
|
|
}
|
|
612
|
|
|
|
|
613
|
|
|
return $total;
|
|
614
|
|
|
}
|
|
615
|
|
|
|
|
616
|
|
|
//----------------------------------------------------------------------
|
|
617
|
|
|
public function convertData()
|
|
618
|
|
|
{
|
|
619
|
|
|
$ver = $this->estimateVersion();
|
|
620
|
|
|
if ($ver > $this->getVersion()) {
|
|
621
|
|
|
$this->setVersion($ver);
|
|
622
|
|
|
}
|
|
623
|
|
|
|
|
624
|
|
|
for (;;) {
|
|
625
|
|
|
$bits = $this->createBitStream();
|
|
626
|
|
|
|
|
627
|
|
|
if ($bits < 0) { |
|
628
|
|
|
return -1; |
|
629
|
|
|
} |
|
630
|
|
|
|
|
631
|
|
|
$ver = QRspec::getMinimumVersion((int) (($bits + 7) / 8), $this->level);
|
|
632
|
|
|
if ($ver < 0) {
|
|
633
|
|
|
throw new Exception('WRONG VERSION');
|
|
634
|
|
|
return -1;
|
|
|
|
|
|
|
635
|
|
|
} else if ($ver > $this->getVersion()) {
|
|
636
|
|
|
$this->setVersion($ver);
|
|
637
|
|
|
} else {
|
|
638
|
|
|
break;
|
|
639
|
|
|
}
|
|
640
|
|
|
}
|
|
641
|
|
|
|
|
642
|
|
|
return 0;
|
|
643
|
|
|
}
|
|
644
|
|
|
|
|
645
|
|
|
//----------------------------------------------------------------------
|
|
646
|
|
|
public function appendPaddingBit(&$bstream)
|
|
647
|
|
|
{
|
|
648
|
|
|
$bits = $bstream->size();
|
|
649
|
|
|
$maxwords = QRspec::getDataLength($this->version, $this->level);
|
|
650
|
|
|
$maxbits = $maxwords * 8;
|
|
651
|
|
|
|
|
652
|
|
|
if ($maxbits == $bits) {
|
|
653
|
|
|
return 0;
|
|
654
|
|
|
}
|
|
655
|
|
|
|
|
656
|
|
|
if ($maxbits - $bits < 5) {
|
|
657
|
|
|
return $bstream->appendNum($maxbits - $bits, 0);
|
|
658
|
|
|
}
|
|
659
|
|
|
|
|
660
|
|
|
$bits += 4;
|
|
661
|
|
|
$words = (int) (($bits + 7) / 8);
|
|
662
|
|
|
|
|
663
|
|
|
$padding = new QRbitstream();
|
|
664
|
|
|
$ret = $padding->appendNum($words * 8 - $bits + 4, 0);
|
|
665
|
|
|
|
|
666
|
|
|
if ($ret < 0) { |
|
667
|
|
|
return $ret; |
|
668
|
|
|
} |
|
669
|
|
|
|
|
670
|
|
|
$padlen = $maxwords - $words;
|
|
671
|
|
|
|
|
672
|
|
|
if ($padlen > 0) {
|
|
673
|
|
|
|
|
674
|
|
|
$padbuf = array();
|
|
675
|
|
|
for ($i = 0; $i < $padlen; $i++) {
|
|
676
|
|
|
$padbuf[$i] = ($i & 1) ? 0x11 : 0xec;
|
|
677
|
|
|
}
|
|
678
|
|
|
|
|
679
|
|
|
$ret = $padding->appendBytes($padlen, $padbuf);
|
|
680
|
|
|
|
|
681
|
|
|
if ($ret < 0) { |
|
682
|
|
|
return $ret; |
|
683
|
|
|
} |
|
684
|
|
|
|
|
685
|
|
|
}
|
|
686
|
|
|
|
|
687
|
|
|
$ret = $bstream->append($padding);
|
|
688
|
|
|
|
|
689
|
|
|
return $ret;
|
|
690
|
|
|
}
|
|
691
|
|
|
|
|
692
|
|
|
//----------------------------------------------------------------------
|
|
693
|
|
|
public function mergeBitStream()
|
|
694
|
|
|
{
|
|
695
|
|
|
if ($this->convertData() < 0) {
|
|
696
|
|
|
return null;
|
|
697
|
|
|
}
|
|
698
|
|
|
|
|
699
|
|
|
$bstream = new QRbitstream();
|
|
700
|
|
|
|
|
701
|
|
|
foreach ($this->items as $item) {
|
|
702
|
|
|
$ret = $bstream->append($item->bstream);
|
|
703
|
|
|
if ($ret < 0) {
|
|
704
|
|
|
return null;
|
|
705
|
|
|
}
|
|
706
|
|
|
}
|
|
707
|
|
|
|
|
708
|
|
|
return $bstream;
|
|
709
|
|
|
}
|
|
710
|
|
|
|
|
711
|
|
|
//----------------------------------------------------------------------
|
|
712
|
|
|
public function getBitStream()
|
|
713
|
|
|
{
|
|
714
|
|
|
|
|
715
|
|
|
$bstream = $this->mergeBitStream();
|
|
716
|
|
|
|
|
717
|
|
|
if ($bstream == null) {
|
|
718
|
|
|
return null;
|
|
719
|
|
|
}
|
|
720
|
|
|
|
|
721
|
|
|
$ret = $this->appendPaddingBit($bstream);
|
|
722
|
|
|
if ($ret < 0) {
|
|
723
|
|
|
return null;
|
|
724
|
|
|
}
|
|
725
|
|
|
|
|
726
|
|
|
return $bstream;
|
|
727
|
|
|
}
|
|
728
|
|
|
|
|
729
|
|
|
//----------------------------------------------------------------------
|
|
730
|
|
|
public function getByteStream()
|
|
731
|
|
|
{
|
|
732
|
|
|
$bstream = $this->getBitStream();
|
|
|
|
|
|
|
733
|
|
|
if ($bstream == null) {
|
|
|
|
|
|
|
734
|
|
|
return null;
|
|
735
|
|
|
}
|
|
736
|
|
|
|
|
737
|
|
|
return $bstream->toByte();
|
|
738
|
|
|
}
|
|
739
|
|
|
}
|
|
740
|
|
|
|
|
741
|
|
|
|
|
742
|
|
|
|
codysnider /
tt-rss
Andrew Dolgov
Scrutinizer Auto-Fixer
Loading history...
This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed.
Unreachable code is most often the result of
return,dieorexitstatements that have been added for debug purposes.In the above example, the last
return falsewill never be executed, because a return statement has already been met in every possible execution path.