public function testAppend()
{
$array = new BitArray(2);
$array->append(0x7, 3);
$this->assertEquals(5, $array->getLength());
$this->assertEquals(array(0, 0, 1, 1, 1), $array->asArray());
}
public static function generateCheckWords(BitArray $stuffedBits, $totalSymbolBits, $wordSize)
{
$messageSizeInWords = intval(($stuffedBits->getLength() + $wordSize - 1) / $wordSize);
for ($i = $messageSizeInWords * $wordSize - $stuffedBits->getLength(); $i > 0; $i--) {
$stuffedBits->append(1);
}
$totalSizeInFullWords = intval($totalSymbolBits / $wordSize);
$messageWords = self::bitsToWords($stuffedBits, $wordSize, $totalSizeInFullWords);
$rs = new ReedSolomonEncoder(self::getGF($wordSize));
$messageWords = $rs->encodePadded($messageWords, $totalSizeInFullWords - $messageSizeInWords);
$startPad = $totalSymbolBits % $wordSize;
$messageBits = new BitArray();
$messageBits->append(0, $startPad);
foreach ($messageWords as $messageWord) {
$messageBits->append($messageWord, $wordSize);
}
return $messageBits;
}
