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LoadC.h

//-------------------------------------------------------------------------
//
// File:        LoadC.h
// Desc:        Input stream class.
// Author:      memon <memon@inside.org>
//
//-------------------------------------------------------------------------
//  Copyright (c) 2000-2002 Moppi Productions. All Rights Reserved.
//  This file is part of Moppi Demopaja SDK. For conditions of 
//  distribution and use, see the accompanying license.txt file.
//  http://moppi.inside.org/demopaja/
//-------------------------------------------------------------------------

#ifndef __DEMOPAJA_LOADC_H__
#define __DEMOPAJA_LOADC_H__

#define FILEIO_DONT_INCLUDE_STREAMS
#include "PajaTypes.h"
#include "FileIO.h"
#include "FactoryC.h"
#include <stdio.h>
#include <vector>
#include <string>

namespace FileIO {


    class LoadC
    {
    public:
        LoadC( PluginClass::FactoryC* pFactory );
        virtual ~LoadC();


        virtual PajaTypes::uint32   open( const char* szName, const PajaTypes::int8* pSignature, PajaTypes::int32 i32SignatureSize );
        virtual PajaTypes::uint32   close();


        virtual PajaTypes::uint32   open_chunk();
        virtual PajaTypes::uint32   get_chunk_id();
        virtual PajaTypes::uint32   get_chunk_version();
        virtual PajaTypes::uint32   get_chunk_size();
        virtual PajaTypes::uint32   get_chunk_indent();

        virtual PajaTypes::uint32   peek_next_chunk();


        virtual PajaTypes::uint32   close_chunk();

        virtual PajaTypes::uint32   read( void* pBuffer, PajaTypes::uint32 ui32Size );
        virtual PajaTypes::uint32   read_str( char* szStr );

        virtual PajaTypes::uint32   get_error();


        virtual void                add_file_handle_patch( void** pPointer, PajaTypes::uint32 ui32HandleId );
        virtual PajaTypes::uint32   get_file_handle_patch_count();
        virtual void**              get_file_handle_patch_pointer( PajaTypes::uint32 ui32Index );
        virtual PajaTypes::uint32   get_file_handle_patch_id( PajaTypes::uint32 ui32Index );

        virtual PluginClass::FactoryC*  get_factory() const;

        virtual PajaTypes::uint32   get_error_message_count();
        virtual const char*         get_error_message( PajaTypes::uint32 ui32Index );

        virtual void                add_error_message( const char* szMessage );

        virtual PajaTypes::uint32   get_file_size() const;
        virtual PajaTypes::uint32   get_read_pos() const;

    private:

        struct ChunkHdrS {
            PajaTypes::uint32   m_ui32ID;
            PajaTypes::uint32   m_ui32Version;
            PajaTypes::uint32   m_ui32Size;
            PajaTypes::uint32   m_ui32Next;
            bool                m_bLastChunk;
        };

        struct FileHandlePatchS {
            PajaTypes::uint32   m_ui32HandleId;
            void**              m_pPointer;
        };

        struct ErrorMessageS {
            std::string         m_sMessage;
        };
        
        FILE*                           m_pStream;
        std::vector<ChunkHdrS>          m_rChunkList;
        std::vector<FileHandlePatchS>   m_rFileHandlePatches;
        std::vector<ErrorMessageS>      m_rErrorLog;
        PajaTypes::uint32               m_ui32Indent;
        PajaTypes::uint32               m_ui32Error;
        PajaTypes::uint32               m_ui32FileSize;

        PluginClass::FactoryC*          m_pFactory;
    };

};

#endif // __LOADC_H__

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