/**
* @abstract returns a FileReader-Object of the uncompressed FileReader-Data-Object
* @return clFileReader object Instanz of class clFileReader
*/
private function BlockUncompress($data, $info_blockID = '')
{
$data->setOffset(0);
$size = $data->len() - 4;
$file = new clFile();
if ($size < 2) {
$this->m_error->addError('unable to decompress section [#' . $info_blockID . ']: block-size-error - size: ' . $size);
return $file->getFileReader();
//- empty File
}
$usize = $data->readInt(4);
if ($usize + 30 < $size || $usize > $size * 10) {
$this->m_error->addError('unable to decompress section [#' . $info_blockID . ']: uncompress-size-error - size: ' . $size . ' - uncompress-size:' . $usize);
return $file->getFileReader();
//- empty File
}
$ucdata = @gzuncompress($data->readStr($size));
if (strlen($ucdata) < 1) {
$this->m_error->addError('unable to decompress section [#' . $info_blockID . ']: gzuncompress-error');
return $file->getFileReader();
//- empty File
}
$file->readFromString($ucdata);
return $file->getFileReader();
}
