fedReader.h

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

#ifndef fedReader_H_
#define fedReader_H_


#include <stdio.h>
#include <vlutil/vlFedTarget.h>
#include <vlutil/vlString.h>

struct _xmlNode;
struct _xmlDoc;
typedef unsigned char xmlChar;
typedef struct _xmlNode xmlNode;
typedef struct _xmlDoc xmlDoc;

#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif

class DtFilename;

enum DtFedReadStatus
{
   DtFedReadOK,
   DtCouldNotOpenFed,
   DtErrorReadingFed,
   DtUnknownFileFormat
};

class DT_DLL_MTL DtFedReader
{
public:

   DtFedReader();

   virtual ~DtFedReader();

private:

   DtFedReader( const DtFedReader& );
   DtFedReader& operator=( const DtFedReader& );

public:

   static DtFomType checkFomType(const char* fedFileName,
      void* fedFilePtr );

   virtual DtFedReadStatus readFed(const char* fedFileName, 
      DtFedTarget* fedTarget, bool strictCheckingEnabled=false, bool useDTD=false, bool dontParseSwitches=false );

   virtual DtFedReadStatus readFedFilePtr( FILE* fedFilePtr, DtFedTarget* fedTarget,
      DtFilename filename, bool strictCheckingEnabled=false, bool useDTD=false, bool dontParseSwitches=false) = 0;

   virtual FILE* openFedFileWithErrCheck( const char* fileName, bool isBinary = false );

   virtual void setStrictChecking(bool enable);
   virtual bool strictChecking() const;

   virtual void setExpectedFomType(DtFomType fomType);
   virtual DtFomType expectedFomType() const;

   virtual DtFomType lastFomType() const;

   virtual const DtString& lastError() const;

   char* myCurrFddBuffer;
   unsigned int myCurrFddBufferSize;

   char* takeCurrFddData();

   static FILE* openFedFile( const char* fileName, bool isBinary = false );
   static bool readFileIntoBuffer( FILE* fileHandle, char** fileBuffer, unsigned int* fileSize );
protected:

   void appendErrorLine(xmlNode* node, DtString& output) const;

   DtFedTarget* myFedTarget;
   DtFedReader* myChildReader;
   bool myStrictChecking;
   bool myDontParseSwitchTable;

   DtFomType myExpectedFomType;

   DtFomType myLastFomType;

   DtString myLastError;

};

#ifdef DtUSE_UTILITIES_NAMESPACE
} 
#endif


#endif