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