public static function getInstance()
{
if (!isset(self::$iInstance)) {
$c = __CLASS__;
self::$iInstance = new $c();
}
return self::$iInstance;
}
function addVersionInfo()
{
if ($this->iVersion >= 7) {
$bitstring = QRCapacity::getInstance()->getVersionBits($this->iVersion);
$n = $this->QRCap->getDimension($this->iVersion);
$this->_dbgInfo(4, "Adding version = {$this->iVersion} bits: " . $bitstring . "\n");
$idx = 0;
for ($c = 0; $c < 6; ++$c) {
for ($r = $n - 11; $r < $n - 8; ++$r) {
// Position first set (Bottom-Left)
$this->iMatrix[$r][$c] = substr($bitstring, $idx, 1);
// Position second set (Upper right)
$this->iMatrix[$c][$r] = substr($bitstring, $idx++, 1);
}
}
}
}
function __construct($aVersion = -1, $aErrLevel = QRCapacity::ErrM)
{
$this->SetSize($aVersion);
// If error level is set < 0 this is interpretated as that the user
// wants us to choose the level of error redundancy.
if ($aErrLevel < 0) {
if ($aVersion > 30) {
$aErrLevel = QRCapacity::ErrH;
// Use more error redundancy for large data
$this->iGeneralInfo .= "Automatically set error level to H\n";
} elseif ($aVersion > 20) {
$aErrLevel = QRCapacity::ErrQ;
// Use more error redundancy for large data
$this->iGeneralInfo .= "Automatically set error level to Q\n";
} else {
$aErrLevel = QRCapacity::ErrM;
$this->iGeneralInfo .= "Automatically set error level to M\n";
}
}
$this->iErrLevel = $aErrLevel;
// Initialize translation table for alphanumeric
for ($i = 0; $i < 10; ++$i) {
$this->iAlphaNumTable[ord('0') + $i] = $i;
}
for ($i = 0; $i < 26; ++$i) {
$this->iAlphaNumTable[ord('A') + $i] = 10 + $i;
}
$punct = array(ord(' ') => 36, ord('$') => 37, ord('%') => 38, ord('*') => 39, ord('+') => 40, ord('-') => 41, ord('.') => 42, ord('/') => 43, ord(':') => 44);
$this->iAlphaNumTable = $this->iAlphaNumTable + $punct;
foreach ($this->iAlphaNumTable as $key => $val) {
$this->iAlphaNumInvTable[$val] = $key;
}
$this->iQRCapacity = QRCapacity::getInstance();
$this->iQRMask = QRMask::getInstance();
}