lgrAnnotationLoader.h

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/******************************************************************************
** Copyright (c) 1992-2010 VT MAK
** All rights reserved.
******************************************************************************/


#ifndef lgrAnnotationLoader_H_
#define lgrAnnotationLoader_H_

#include <lgrAnnotations/lgrAnn.h>
#include <lgrUtil/virtualConstructor.h>
#include <vlutil/vlNetTypes.h>
class DtString;
class DtEnvironment;

namespace MAKLogger
{

   class DT_DLL_LGRANN DtLgrAnnotationLoader
   {
   public:

      DT_VIRTUAL_CTR(DtLgrAnnotationLoader,())

      virtual ~DtLgrAnnotationLoader();

      virtual DtEnvironment loadFile(const DtString& filename,bool& success);

   protected:

      enum FileFormat
      {
         Format_Unknown,
         Format_LegacyBinaryFormat,
         Format_XML
      };

      struct NetPacketHeader
      {
         DtNetU32 numBytes;
         DtNetU32 flags;
         DtNetFloat64 arrivalTime;
      };

      FileFormat determineFileFormat(const DtString&);

      DtEnvironment readBinaryFormat(const DtString& filename,bool& success);

      DtEnvironment readXMLFormat(const DtString& filename,bool& success);

      static DtString readOneLine( int fd );

   };
}

#endif