include/vrvCore/DtFeatureFieldValueParser.h

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/*******************************************************************************
** Copyright (c) 2008 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: DtFeatureFieldValueParser.h,v $ $Revision: 1.7 $ $State: Exp $
*******************************************************************************/


#pragma once

#include <vrvCore/vrvCore.h>
#include <vrvUtil/DtVirtualBaseClass.h>
#include <map>
#include <set>
#include <string>

namespace makVrv
{
   class DtDe;
   class DtFeatureFieldValueReader;

   class DT_DLL_VRVCORE DtFeatureFieldValueReaderFactory : public DtVirtualBaseClass
   {
   public:
      static DtFeatureFieldValueReaderFactory& instance(DtDe& de);

      ~DtFeatureFieldValueReaderFactory();

      void setReader(const std::string& fileExtension,
         DtFeatureFieldValueReader*);

      void setDefaultReader(DtFeatureFieldValueReader*);


      DtFeatureFieldValueReader* findReader(const std::string& ext);

   protected:
      DtFeatureFieldValueReaderFactory();

      typedef std::map<std::string,DtFeatureFieldValueReader*> ExtToReaderMap;
      ExtToReaderMap myExtensionToReaderMap;
      DtFeatureFieldValueReader* myDefaultReader;

   };


   class DT_DLL_VRVCORE DtFeatureFieldValueParser
   {

   public:

      typedef std::map<std::string, std::set<std::string> > FeatureFieldValueMap;

      DtFeatureFieldValueParser(DtDe& de);

      ~DtFeatureFieldValueParser();

      bool getFeatureFieldValuePairs(const std::string& fileName,
         FeatureFieldValueMap& mapOut) const;

   protected:

      DtDe& myDe;
   };

   class DT_DLL_VRVCORE DtFeatureFieldValueReader
   {
   public:

      DtFeatureFieldValueReader(DtDe& de);

      virtual ~DtFeatureFieldValueReader();

      virtual bool readValuesFromFile(const std::string& fileName, 
         DtFeatureFieldValueParser::FeatureFieldValueMap& mapOut) const = 0;

   protected:
      DtDe& myDe;
   };



}