| Server IP : 74.208.127.88 / Your IP : 3.145.199.42 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /var/www/html/app/plugins/jsqrcode/ |
Upload File : |
/*
Ported to JavaScript by Lazar Laszlo 2011
lazarsoft@gmail.com, www.lazarsoft.info
*/
/*
*
* Copyright 2007 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
function GF256( primitive)
{
this.expTable = new Array(256);
this.logTable = new Array(256);
var x = 1;
for (var i = 0; i < 256; i++)
{
this.expTable[i] = x;
x <<= 1; // x = x * 2; we're assuming the generator alpha is 2
if (x >= 0x100)
{
x ^= primitive;
}
}
for (var i = 0; i < 255; i++)
{
this.logTable[this.expTable[i]] = i;
}
// logTable[0] == 0 but this should never be used
var at0=new Array(1);at0[0]=0;
this.zero = new GF256Poly(this, new Array(at0));
var at1=new Array(1);at1[0]=1;
this.one = new GF256Poly(this, new Array(at1));
this.__defineGetter__("Zero", function()
{
return this.zero;
});
this.__defineGetter__("One", function()
{
return this.one;
});
this.buildMonomial=function( degree, coefficient)
{
if (degree < 0)
{
throw "System.ArgumentException";
}
if (coefficient == 0)
{
return zero;
}
var coefficients = new Array(degree + 1);
for(var i=0;i<coefficients.length;i++)coefficients[i]=0;
coefficients[0] = coefficient;
return new GF256Poly(this, coefficients);
}
this.exp=function( a)
{
return this.expTable[a];
}
this.log=function( a)
{
if (a == 0)
{
throw "System.ArgumentException";
}
return this.logTable[a];
}
this.inverse=function( a)
{
if (a == 0)
{
throw "System.ArithmeticException";
}
return this.expTable[255 - this.logTable[a]];
}
this.multiply=function( a, b)
{
if (a == 0 || b == 0)
{
return 0;
}
if (a == 1)
{
return b;
}
if (b == 1)
{
return a;
}
return this.expTable[(this.logTable[a] + this.logTable[b]) % 255];
}
}
GF256.QR_CODE_FIELD = new GF256(0x011D);
GF256.DATA_MATRIX_FIELD = new GF256(0x012D);
GF256.addOrSubtract=function( a, b)
{
return a ^ b;
}