/**
* 在末尾加入全部index数据
*/
public function appendIndexes(Binary &$idat)
{
$this->index_first = $this->tell();
$bytes = $idat->tell();
if ($bytes === 0) {
$idat->seek(0, SEEK_END);
$bytes = $idat->tell();
}
$idat->seek(0);
$position = $this->write($idat->read($bytes));
$index_size = $this->getIndexSize();
$this->index_last = $this->tell() - $index_size;
return $this->writeNumber($position, $this->term_size);
}
