8a2a605f45
Possibilité de générer un code QR depuis la barre de recherche, en ajoutant le générateur comme moteur de recherche.
329 lines
12 KiB
PHP
Executable File
329 lines
12 KiB
PHP
Executable File
<?php
|
|
/*
|
|
* PHP QR Code encoder
|
|
*
|
|
* Masking
|
|
*
|
|
* Based on libqrencode C library distributed under LGPL 2.1
|
|
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>
|
|
*
|
|
* 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('N1', 3);
|
|
define('N2', 3);
|
|
define('N3', 40);
|
|
define('N4', 10);
|
|
|
|
class QRmask {
|
|
|
|
public $runLength = array();
|
|
|
|
//----------------------------------------------------------------------
|
|
public function __construct()
|
|
{
|
|
$this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function writeFormatInformation($width, &$frame, $mask, $level)
|
|
{
|
|
$blacks = 0;
|
|
$format = QRspec::getFormatInfo($mask, $level);
|
|
|
|
for($i=0; $i<8; $i++) {
|
|
if($format & 1) {
|
|
$blacks += 2;
|
|
$v = 0x85;
|
|
} else {
|
|
$v = 0x84;
|
|
}
|
|
|
|
$frame[8][$width - 1 - $i] = chr($v);
|
|
if($i < 6) {
|
|
$frame[$i][8] = chr($v);
|
|
} else {
|
|
$frame[$i + 1][8] = chr($v);
|
|
}
|
|
$format = $format >> 1;
|
|
}
|
|
|
|
for($i=0; $i<7; $i++) {
|
|
if($format & 1) {
|
|
$blacks += 2;
|
|
$v = 0x85;
|
|
} else {
|
|
$v = 0x84;
|
|
}
|
|
|
|
$frame[$width - 7 + $i][8] = chr($v);
|
|
if($i == 0) {
|
|
$frame[8][7] = chr($v);
|
|
} else {
|
|
$frame[8][6 - $i] = chr($v);
|
|
}
|
|
|
|
$format = $format >> 1;
|
|
}
|
|
|
|
return $blacks;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function mask0($x, $y) { return ($x+$y)&1; }
|
|
public function mask1($x, $y) { return ($y&1); }
|
|
public function mask2($x, $y) { return ($x%3); }
|
|
public function mask3($x, $y) { return ($x+$y)%3; }
|
|
public function mask4($x, $y) { return (((int)($y/2))+((int)($x/3)))&1; }
|
|
public function mask5($x, $y) { return (($x*$y)&1)+($x*$y)%3; }
|
|
public function mask6($x, $y) { return ((($x*$y)&1)+($x*$y)%3)&1; }
|
|
public function mask7($x, $y) { return ((($x*$y)%3)+(($x+$y)&1))&1; }
|
|
|
|
//----------------------------------------------------------------------
|
|
private function generateMaskNo($maskNo, $width, $frame)
|
|
{
|
|
$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
|
|
|
|
for($y=0; $y<$width; $y++) {
|
|
for($x=0; $x<$width; $x++) {
|
|
if(ord($frame[$y][$x]) & 0x80) {
|
|
$bitMask[$y][$x] = 0;
|
|
} else {
|
|
$maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);
|
|
$bitMask[$y][$x] = ($maskFunc == 0)?1:0;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
return $bitMask;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public static function serial($bitFrame)
|
|
{
|
|
$codeArr = array();
|
|
|
|
foreach ($bitFrame as $line)
|
|
$codeArr[] = join('', $line);
|
|
|
|
return gzcompress(join("\n", $codeArr), 9);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public static function unserial($code)
|
|
{
|
|
$codeArr = array();
|
|
|
|
$codeLines = explode("\n", gzuncompress($code));
|
|
foreach ($codeLines as $line)
|
|
$codeArr[] = str_split($line);
|
|
|
|
return $codeArr;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false)
|
|
{
|
|
$b = 0;
|
|
$bitMask = array();
|
|
|
|
$fileName = QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat';
|
|
|
|
if (QR_CACHEABLE) {
|
|
if (file_exists($fileName)) {
|
|
$bitMask = self::unserial(file_get_contents($fileName));
|
|
} else {
|
|
$bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
|
|
if (!file_exists(QR_CACHE_DIR.'mask_'.$maskNo))
|
|
mkdir(QR_CACHE_DIR.'mask_'.$maskNo);
|
|
file_put_contents($fileName, self::serial($bitMask));
|
|
}
|
|
} else {
|
|
$bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
|
|
}
|
|
|
|
if ($maskGenOnly)
|
|
return;
|
|
|
|
$d = $s;
|
|
|
|
for($y=0; $y<$width; $y++) {
|
|
for($x=0; $x<$width; $x++) {
|
|
if($bitMask[$y][$x] == 1) {
|
|
$d[$y][$x] = chr(ord($s[$y][$x]) ^ (int)$bitMask[$y][$x]);
|
|
}
|
|
$b += (int)(ord($d[$y][$x]) & 1);
|
|
}
|
|
}
|
|
|
|
return $b;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function makeMask($width, $frame, $maskNo, $level)
|
|
{
|
|
$masked = array_fill(0, $width, str_repeat("\0", $width));
|
|
$this->makeMaskNo($maskNo, $width, $frame, $masked);
|
|
$this->writeFormatInformation($width, $masked, $maskNo, $level);
|
|
|
|
return $masked;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function calcN1N3($length)
|
|
{
|
|
$demerit = 0;
|
|
|
|
for($i=0; $i<$length; $i++) {
|
|
|
|
if($this->runLength[$i] >= 5) {
|
|
$demerit += (N1 + ($this->runLength[$i] - 5));
|
|
}
|
|
if($i & 1) {
|
|
if(($i >= 3) && ($i < ($length-2)) && ($this->runLength[$i] % 3 == 0)) {
|
|
$fact = (int)($this->runLength[$i] / 3);
|
|
if(($this->runLength[$i-2] == $fact) &&
|
|
($this->runLength[$i-1] == $fact) &&
|
|
($this->runLength[$i+1] == $fact) &&
|
|
($this->runLength[$i+2] == $fact)) {
|
|
if(($this->runLength[$i-3] < 0) || ($this->runLength[$i-3] >= (4 * $fact))) {
|
|
$demerit += N3;
|
|
} else if((($i+3) >= $length) || ($this->runLength[$i+3] >= (4 * $fact))) {
|
|
$demerit += N3;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $demerit;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
public function evaluateSymbol($width, $frame)
|
|
{
|
|
$head = 0;
|
|
$demerit = 0;
|
|
|
|
for($y=0; $y<$width; $y++) {
|
|
$head = 0;
|
|
$this->runLength[0] = 1;
|
|
|
|
$frameY = $frame[$y];
|
|
|
|
if ($y>0)
|
|
$frameYM = $frame[$y-1];
|
|
|
|
for($x=0; $x<$width; $x++) {
|
|
if(($x > 0) && ($y > 0)) {
|
|
$b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);
|
|
$w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);
|
|
|
|
if(($b22 | ($w22 ^ 1))&1) {
|
|
$demerit += N2;
|
|
}
|
|
}
|
|
if(($x == 0) && (ord($frameY[$x]) & 1)) {
|
|
$this->runLength[0] = -1;
|
|
$head = 1;
|
|
$this->runLength[$head] = 1;
|
|
} else if($x > 0) {
|
|
if((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {
|
|
$head++;
|
|
$this->runLength[$head] = 1;
|
|
} else {
|
|
$this->runLength[$head]++;
|
|
}
|
|
}
|
|
}
|
|
|
|
$demerit += $this->calcN1N3($head+1);
|
|
}
|
|
|
|
for($x=0; $x<$width; $x++) {
|
|
$head = 0;
|
|
$this->runLength[0] = 1;
|
|
|
|
for($y=0; $y<$width; $y++) {
|
|
if($y == 0 && (ord($frame[$y][$x]) & 1)) {
|
|
$this->runLength[0] = -1;
|
|
$head = 1;
|
|
$this->runLength[$head] = 1;
|
|
} else if($y > 0) {
|
|
if((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {
|
|
$head++;
|
|
$this->runLength[$head] = 1;
|
|
} else {
|
|
$this->runLength[$head]++;
|
|
}
|
|
}
|
|
}
|
|
|
|
$demerit += $this->calcN1N3($head+1);
|
|
}
|
|
|
|
return $demerit;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
public function mask($width, $frame, $level)
|
|
{
|
|
$minDemerit = PHP_INT_MAX;
|
|
$bestMaskNum = 0;
|
|
$bestMask = array();
|
|
|
|
$checked_masks = array(0,1,2,3,4,5,6,7);
|
|
|
|
if (QR_FIND_FROM_RANDOM !== false) {
|
|
|
|
$howManuOut = 8-(QR_FIND_FROM_RANDOM % 9);
|
|
for ($i = 0; $i < $howManuOut; $i++) {
|
|
$remPos = rand (0, count($checked_masks)-1);
|
|
unset($checked_masks[$remPos]);
|
|
$checked_masks = array_values($checked_masks);
|
|
}
|
|
|
|
}
|
|
|
|
$bestMask = $frame;
|
|
|
|
foreach($checked_masks as $i) {
|
|
$mask = array_fill(0, $width, str_repeat("\0", $width));
|
|
|
|
$demerit = 0;
|
|
$blacks = 0;
|
|
$blacks = $this->makeMaskNo($i, $width, $frame, $mask);
|
|
$blacks += $this->writeFormatInformation($width, $mask, $i, $level);
|
|
$blacks = (int)(100 * $blacks / ($width * $width));
|
|
$demerit = (int)((int)(abs($blacks - 50) / 5) * N4);
|
|
$demerit += $this->evaluateSymbol($width, $mask);
|
|
|
|
if($demerit < $minDemerit) {
|
|
$minDemerit = $demerit;
|
|
$bestMask = $mask;
|
|
$bestMaskNum = $i;
|
|
}
|
|
}
|
|
|
|
return $bestMask;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
}
|