/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     io_RomFileStream.h

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Revision:$
 *---------------------------------------------------------------------------*/

#ifndef NW_IO_ROM_FILE_STREAM_H_
#define NW_IO_ROM_FILE_STREAM_H_

#include <nn/fs.h>
#include <nw/io/io_FileStream.h>

namespace nw {
namespace io {

class RomFileStream : public FileStream
{
public:
    NW_UT_RUNTIME_TYPEINFO;

    RomFileStream();
    RomFileStream( const char* path );
    // RomFileStream( const wchar_t* path );
#ifdef NW_PLATFORM_CTRWIN
    RomFileStream( const nn::fs::File* openedFile, bool closeEnable = true );
#else
    RomFileStream( nn::fs::FileReader* openedFileReader, bool closeEnable = true );
#endif
    virtual ~RomFileStream();

    bool Open( const char* path );
    // bool Open( const wchar_t* path );
#ifdef NW_PLATFORM_CTRWIN
    bool Open( const nn::fs::File* openedFile, bool closeEnable = true );
#else
    bool Open( nn::fs::FileReader* openedFileReader, bool closeEnable = true );
#endif
    virtual void Close();
    virtual s32 Read( void* buf, u32 length );

    virtual void Seek( s32 offset, u32 origin );
    virtual u32 GetSize() const { return m_FilePosition.GetFileSize(); }
    virtual u32 Tell() const { return m_FilePosition.Tell(); }

    virtual bool CanSeek()   const { return true; }
    virtual bool CanCancel() const { return false; } // TODO: CTR_SDK で非同期ロードサポートされたら true
    virtual bool CanRead()   const { return true; }
    virtual bool CanWrite()  const { return false; }
    virtual bool CanAsync()  const { return false; } // TODO: CTR_SDK で非同期ロードサポートされたら true

protected:

private:
    void Initialize();

    FilePosition m_FilePosition;

#ifdef NW_PLATFORM_CTRWIN
    nn::fs::File m_File;
        /* TODO: オープン済みのファイルを nn::fs::FileReader で扱えるようになったら、
                 完全に nn::fs::FileReader を使う実装に置き換える */
#else
    nn::fs::FileReader m_FileReader;
    nn::fs::FileReader* m_pOpenedFileReader;
#endif
    bool m_IsAvailable;
    bool m_CloseOnDestroyFlag;  // true: デストラクト時にファイルをクローズする
    bool m_CloseEnableFlag;     // true: RomFileStream 内でファイルのクローズを許可

};


} // namespace nw::io
} // namespace nw


#endif /* NW_IO_ROM_FILE_STREAM_H_ */