// Created on: 1996-11-29
// Created by: Christophe LEYNADIER
// Copyright (c) 1996-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _FSD_BinaryFile_HeaderFile
#define _FSD_BinaryFile_HeaderFile

#include <FSD_BStream.hxx>
#include <FSD_FileHeader.hxx>
#include <Storage_BaseDriver.hxx>
#include <Storage_Error.hxx>
#include <Storage_OpenMode.hxx>
#include <Storage_Data.hxx>
#include <Standard_Boolean.hxx>
#include <Storage_Position.hxx>
#include <Standard_Integer.hxx>
#include <TColStd_SequenceOfAsciiString.hxx>
#include <TColStd_SequenceOfExtendedString.hxx>

class TCollection_AsciiString;
class TCollection_ExtendedString;
class Storage_HeaderData;

// Macro that tells if bytes must be reversed when read/write 
// data to/from a binary file. It is needed to provide binary file compatibility
// between little and big endian platforms.
#ifndef OCCT_BINARY_FILE_DO_INVERSE
#if defined ( SOLARIS ) || defined ( IRIX )
// Do inverse on big endian platform
#define OCCT_BINARY_FILE_DO_INVERSE 1
#else
#define OCCT_BINARY_FILE_DO_INVERSE 0
#endif
#endif

DEFINE_STANDARD_HANDLE(FSD_BinaryFile,Storage_BaseDriver)

class FSD_BinaryFile  : public Storage_BaseDriver
{
public:
  DEFINE_STANDARD_RTTIEXT(FSD_BinaryFile,Storage_BaseDriver)

public:

  Standard_EXPORT FSD_BinaryFile();
  
  Standard_EXPORT Storage_Error Open (const TCollection_AsciiString& aName, const Storage_OpenMode aMode) Standard_OVERRIDE;
  
  Standard_EXPORT Standard_Boolean IsEnd() Standard_OVERRIDE;
  
  //! return position in the file. Return -1 upon error.
  Standard_EXPORT Storage_Position Tell() Standard_OVERRIDE;
  
  Standard_EXPORT static Storage_Error IsGoodFileType (const TCollection_AsciiString& aName);
  
  Standard_EXPORT Storage_Error BeginWriteInfoSection() Standard_OVERRIDE;

  Standard_EXPORT static Standard_Integer WriteInfo (Standard_OStream& theOStream,
                                                     const Standard_Integer nbObj,
                                                     const TCollection_AsciiString& dbVersion,
                                                     const TCollection_AsciiString& date,
                                                     const TCollection_AsciiString& schemaName,
                                                     const TCollection_AsciiString& schemaVersion,
                                                     const TCollection_ExtendedString& appName,
                                                     const TCollection_AsciiString& appVersion,
                                                     const TCollection_ExtendedString& objectType,
                                                     const TColStd_SequenceOfAsciiString& userInfo,
                                                     const Standard_Boolean theOnlyCount = Standard_False);
  
  Standard_EXPORT void WriteInfo (const Standard_Integer nbObj, 
                                  const TCollection_AsciiString& dbVersion, 
                                  const TCollection_AsciiString& date, 
                                  const TCollection_AsciiString& schemaName, 
                                  const TCollection_AsciiString& schemaVersion, 
                                  const TCollection_ExtendedString& appName, 
                                  const TCollection_AsciiString& appVersion, 
                                  const TCollection_ExtendedString& objectType, 
                                  const TColStd_SequenceOfAsciiString& userInfo) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndWriteInfoSection() Standard_OVERRIDE;

  Standard_EXPORT Storage_Error EndWriteInfoSection(Standard_OStream& theOStream);
  
  Standard_EXPORT Storage_Error BeginReadInfoSection() Standard_OVERRIDE;
  
  Standard_EXPORT void ReadInfo (Standard_Integer& nbObj, 
                                 TCollection_AsciiString& dbVersion, 
                                 TCollection_AsciiString& date, 
                                 TCollection_AsciiString& schemaName, 
                                 TCollection_AsciiString& schemaVersion, 
                                 TCollection_ExtendedString& appName, 
                                 TCollection_AsciiString& appVersion, 
                                 TCollection_ExtendedString& objectType, 
                                 TColStd_SequenceOfAsciiString& userInfo) Standard_OVERRIDE;
  
  Standard_EXPORT void ReadCompleteInfo (Standard_IStream& theIStream, Handle(Storage_Data)& theData) Standard_OVERRIDE;

  Standard_EXPORT Storage_Error EndReadInfoSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteCommentSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteCommentSection (Standard_OStream& theOStream);
  
  Standard_EXPORT void WriteComment (const TColStd_SequenceOfExtendedString& userComments) Standard_OVERRIDE;
  
  Standard_EXPORT static Standard_Integer WriteComment (Standard_OStream& theOStream,
                                                        const TColStd_SequenceOfExtendedString& theComments,
                                                        const Standard_Boolean theOnlyCount = Standard_False);
  
  Standard_EXPORT Storage_Error EndWriteCommentSection() Standard_OVERRIDE;

  Standard_EXPORT Storage_Error EndWriteCommentSection (Standard_OStream& theOStream);
  
  Standard_EXPORT Storage_Error BeginReadCommentSection() Standard_OVERRIDE;
  
  Standard_EXPORT void ReadComment (TColStd_SequenceOfExtendedString& userComments) Standard_OVERRIDE;

  Standard_EXPORT static void ReadComment (Standard_IStream& theIStream, TColStd_SequenceOfExtendedString& userComments);
  
  Standard_EXPORT Storage_Error EndReadCommentSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteTypeSection() Standard_OVERRIDE;
  
  Standard_EXPORT void SetTypeSectionSize (const Standard_Integer aSize) Standard_OVERRIDE;
  
  Standard_EXPORT void WriteTypeInformations (const Standard_Integer typeNum, const TCollection_AsciiString& typeName) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndWriteTypeSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginReadTypeSection() Standard_OVERRIDE;
  
  Standard_EXPORT Standard_Integer TypeSectionSize() Standard_OVERRIDE;

  Standard_EXPORT static Standard_Integer TypeSectionSize(Standard_IStream& theIStream);
  
  Standard_EXPORT void ReadTypeInformations (Standard_Integer& typeNum, TCollection_AsciiString& typeName) Standard_OVERRIDE;

  Standard_EXPORT static void ReadTypeInformations (Standard_IStream& theIStream, 
                                                    Standard_Integer& typeNum, 
                                                    TCollection_AsciiString& typeName);
  
  Standard_EXPORT Storage_Error EndReadTypeSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteRootSection() Standard_OVERRIDE;
  
  Standard_EXPORT void SetRootSectionSize (const Standard_Integer aSize) Standard_OVERRIDE;
  
  Standard_EXPORT void WriteRoot (const TCollection_AsciiString& rootName, 
                                  const Standard_Integer aRef, 
                                  const TCollection_AsciiString& aType) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndWriteRootSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginReadRootSection() Standard_OVERRIDE;
  
  Standard_EXPORT Standard_Integer RootSectionSize() Standard_OVERRIDE;
  
  Standard_EXPORT static Standard_Integer RootSectionSize(Standard_IStream& theIStream);
  
  Standard_EXPORT void ReadRoot (TCollection_AsciiString& rootName, 
                                 Standard_Integer& aRef, 
                                 TCollection_AsciiString& aType) Standard_OVERRIDE;

  Standard_EXPORT static void ReadRoot (Standard_IStream& theIStream, 
                                        TCollection_AsciiString& rootName, 
                                        Standard_Integer& aRef, 
                                        TCollection_AsciiString& aType);
  
  Standard_EXPORT Storage_Error EndReadRootSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteRefSection() Standard_OVERRIDE;
  
  Standard_EXPORT void SetRefSectionSize (const Standard_Integer aSize) Standard_OVERRIDE;
  
  Standard_EXPORT void WriteReferenceType (const Standard_Integer reference, const Standard_Integer typeNum) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndWriteRefSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginReadRefSection() Standard_OVERRIDE;
  
  Standard_EXPORT Standard_Integer RefSectionSize() Standard_OVERRIDE;

  Standard_EXPORT static Standard_Integer RefSectionSize(Standard_IStream& theIStream);
  
  Standard_EXPORT void ReadReferenceType (Standard_Integer& reference, Standard_Integer& typeNum) Standard_OVERRIDE;

  Standard_EXPORT static void ReadReferenceType (Standard_IStream& theIStream, 
                                                 Standard_Integer& reference, 
                                                 Standard_Integer& typeNum);
  
  Standard_EXPORT Storage_Error EndReadRefSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginWriteDataSection() Standard_OVERRIDE;
  
  Standard_EXPORT void WritePersistentObjectHeader (const Standard_Integer aRef, const Standard_Integer aType) Standard_OVERRIDE;
  
  Standard_EXPORT void BeginWritePersistentObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void BeginWriteObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void EndWriteObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void EndWritePersistentObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndWriteDataSection() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error BeginReadDataSection() Standard_OVERRIDE;
  
  Standard_EXPORT void ReadPersistentObjectHeader (Standard_Integer& aRef, Standard_Integer& aType) Standard_OVERRIDE;
  
  Standard_EXPORT void BeginReadPersistentObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void BeginReadObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void EndReadObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT void EndReadPersistentObjectData() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error EndReadDataSection() Standard_OVERRIDE;
  
  Standard_EXPORT void SkipObject() Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutReference (const Standard_Integer aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutCharacter (const Standard_Character aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutExtCharacter (const Standard_ExtCharacter aValue) Standard_OVERRIDE;
  
  Standard_EXPORT static Standard_Integer PutInteger (Standard_OStream& theOStream,
                                                      const Standard_Integer aValue,
                                                      const Standard_Boolean theOnlyCount = Standard_False);

  Standard_EXPORT Storage_BaseDriver& PutInteger (const Standard_Integer aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutBoolean (const Standard_Boolean aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutReal (const Standard_Real aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& PutShortReal (const Standard_ShortReal aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& GetReference (Standard_Integer& aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& GetCharacter (Standard_Character& aValue) Standard_OVERRIDE;

  Standard_EXPORT static void GetReference (Standard_IStream& theIStream, Standard_Integer& aValue);
  
  Standard_EXPORT Storage_BaseDriver& GetExtCharacter (Standard_ExtCharacter& aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& GetInteger (Standard_Integer& aValue) Standard_OVERRIDE;

  Standard_EXPORT static void GetInteger (Standard_IStream& theIStream, Standard_Integer& aValue);
  
  Standard_EXPORT Storage_BaseDriver& GetBoolean (Standard_Boolean& aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& GetReal (Standard_Real& aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_BaseDriver& GetShortReal (Standard_ShortReal& aValue) Standard_OVERRIDE;
  
  Standard_EXPORT Storage_Error Close() Standard_OVERRIDE;
  
  Standard_EXPORT void Destroy();

  ~FSD_BinaryFile()
  {
    Destroy();
  }

public:
  //!@name Own methods

  ///Inverse bytes in integer value
  static Standard_Integer InverseInt(const Standard_Integer theValue)
  {
    return (0 | (( theValue & 0x000000ff ) << 24 )
              | (( theValue & 0x0000ff00 ) << 8  )
              | (( theValue & 0x00ff0000 ) >> 8  )
              | (( theValue >> 24 ) & 0x000000ff ) );
  }

  ///Inverse bytes in extended character value
  static Standard_ExtCharacter InverseExtChar(const Standard_ExtCharacter theValue)
  {
    return (0 | (( theValue & 0x00ff ) << 8  )
            |   (( theValue & 0xff00 ) >> 8  ) );
  }

  ///Inverse bytes in real value
  Standard_EXPORT static Standard_Real InverseReal(const Standard_Real theValue);

  ///Inverse bytes in short real value
  Standard_EXPORT static Standard_ShortReal InverseShortReal(const Standard_ShortReal theValue);

  ///Inverse bytes in size value
  Standard_EXPORT static Standard_Size InverseSize(const Standard_Size theValue);
  ///Inverse bytes in 64bit unsigned int value
  Standard_EXPORT static uint64_t InverseUint64(const uint64_t theValue);

  Standard_EXPORT static void ReadHeader (Standard_IStream& theIStream, FSD_FileHeader& theFileHeader);

  Standard_EXPORT static void ReadHeaderData (Standard_IStream& theIStream, const Handle(Storage_HeaderData)& theHeaderData);

  Standard_EXPORT static void ReadString (Standard_IStream& theIStream, TCollection_AsciiString& buffer);

  Standard_EXPORT static void ReadExtendedString (Standard_IStream& theIStream, TCollection_ExtendedString& buffer);

  Standard_EXPORT static Standard_Integer WriteHeader (Standard_OStream&      theOStream, 
                                                       const FSD_FileHeader&  theHeader,
                                                       const Standard_Boolean theOnlyCount = Standard_False);

  Standard_EXPORT static Standard_CString MagicNumber();

protected:
  
  //! read <rsize> character from the current position.
  Standard_EXPORT void ReadChar (TCollection_AsciiString& buffer, const Standard_Size rsize);
  
  //! read string from the current position.
  Standard_EXPORT void ReadString (TCollection_AsciiString& buffer);
  
  //! write string at the current position.
  Standard_EXPORT void WriteString (const TCollection_AsciiString& buffer);

  //! write string at the current position.
  Standard_EXPORT static Standard_Integer WriteString (Standard_OStream&              theOStream,
                                                       const TCollection_AsciiString& theString,
                                                       const Standard_Boolean         theOnlyCount = Standard_False);
  
  //! read string from the current position.
  Standard_EXPORT void ReadExtendedString (TCollection_ExtendedString& buffer);
  
  //! write string at the current position.
  Standard_EXPORT void WriteExtendedString (const TCollection_ExtendedString& buffer);
  
  //! write string at the current position.
  Standard_EXPORT static Standard_Integer WriteExtendedString (Standard_OStream& theOStream,
                                                               const TCollection_ExtendedString& theString,
                                                               const Standard_Boolean theOnlyCount = Standard_False);

private:
  
  void WriteHeader();
  
  void ReadHeader();
  

private:

  FSD_BStream myStream;
  FSD_FileHeader myHeader;
};

#endif // _FSD_BinaryFile_HeaderFile