NodeTransitPtr SceneFileHandlerBase::read(
std::istream &is,
const Char8 *fileNameOrExtension,
GraphOpSeq *graphOpSeq ,
Resolver resolver )
{
SceneFileType *type = getFileType(fileNameOrExtension);
NodeUnrecPtr scene = NULL;
if(!fileNameOrExtension)
{
SWARNING << "cannot read NULL extension" << std::endl;
return NodeTransitPtr(scene);
}
if(type != NULL)
{
SINFO << "try to read stream as " << type->getName() << std::endl;
// check for fileio read callback
if(_readFP != NULL)
{
initReadProgress(is);
scene = _readFP(type, is, fileNameOrExtension);
terminateReadProgress();
}
else
{
if(isGZip(is))
{
SINFO << "Detected gzip compressed stream." << std::endl;
#ifdef OSG_WITH_ZLIB
initReadProgress(is);
zip_istream unzipper(is);
scene = type->read(unzipper,
fileNameOrExtension,
resolver ? resolver : _oGlobalResolver);
if(scene != NULL)
{
if(unzipper.check_crc() == true)
{
SINFO << "Compressed stream has correct checksum."
<< std::endl;
}
else
{
SWARNING << "Compressed stream has wrong checksum."
<< std::endl;
}
}
terminateReadProgress();
#else
SFATAL << "Compressed streams are not supported! Configure "
<< "with --enable-png --with-png=DIR options."
<< std::endl;
#endif
}
else
{
initReadProgress(is);
scene = type->read(is,
fileNameOrExtension,
resolver ? resolver : _oGlobalResolver);
terminateReadProgress();
}
}
if(scene != NULL)
{
if(graphOpSeq != NULL)
graphOpSeq->traverse(scene);
SINFO << "read ok:" << std::endl;
}
else
{
SWARNING << "could not read " << std::endl;
}
}
else
{
SWARNING << "could not read unknown file format" << std::endl;
}
commitChanges();
return NodeTransitPtr(scene);
}
NodePtr SceneFileHandler::read(std::istream &is, const Char8* fileNameOrExtension,
GraphOpSeq *graphOpSeq)
{
SceneFileType *type = getFileType(fileNameOrExtension);
NodePtr scene = NullFC;
if(!fileNameOrExtension)
{
SWARNING << "cannot read NULL extension" << std::endl;
return NullFC;
}
if (type)
{
SINFO << "try to read stream as " << type->getName() << std::endl;
// check for fileio read callback
if(_readFP != NULL)
{
initReadProgress(is);
scene = _readFP(type, is, fileNameOrExtension);
terminateReadProgress();
}
else
{
if(isGZip(is))
{
SINFO << "Detected gzip compressed stream." << std::endl;
#ifdef OSG_ZSTREAM_SUPPORTED
initReadProgress(is);
zip_istream unzipper(is);
scene = type->read(unzipper, fileNameOrExtension);
if(scene != NullFC)
{
if(unzipper.check_crc())
SINFO << "Compressed stream has correct checksum." << std::endl;
else
SFATAL << "Compressed stream has wrong checksum." << std::endl;
}
terminateReadProgress();
#else
SFATAL << "Compressed streams are not supported! Configure with --enable-png --with-png=DIR options." << std::endl;
#endif
}
else
{
initReadProgress(is);
scene = type->read(is, fileNameOrExtension);
terminateReadProgress();
}
}
if(scene != NullFC)
{
if(graphOpSeq != NULL)
graphOpSeq->run(scene);
SINFO << "read ok:" << std::endl;
}
else
{
SWARNING << "could not read " << std::endl;
}
}
else
{
SWARNING << "could not read unknown file format" << std::endl;
}
return scene;
}