vsi_l_offset VSIFTellL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Tell();
}

int VSIFFlushL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Flush();
}

int VSIFEofL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Eof();
}

size_t VSIFReadL( void * pBuffer, size_t nSize, size_t nCount, VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Read( pBuffer, nSize, nCount );
}

size_t VSIFWriteL( const void *pBuffer, size_t nSize, size_t nCount, VSILFILE *fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Write( pBuffer, nSize, nCount );
}

int VSIFEofL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Eof();
}

int VSIFTruncateL( VSILFILE * fp, vsi_l_offset nNewSize )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;

    return poFileHandle->Truncate(nNewSize);
}

int VSIFTruncateL( VSILFILE * fp, vsi_l_offset nNewSize )

{
  VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Truncate(nNewSize);
}

size_t VSIFWriteL( const void *pBuffer, size_t nSize, size_t nCount, VSILFILE *fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Write( pBuffer, nSize, nCount );
}

size_t VSIFReadL( void * pBuffer, size_t nSize, size_t nCount, VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Read( pBuffer, nSize, nCount );
}

int VSIFFlushL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    return poFileHandle->Flush();
}

vsi_l_offset VSIFTellL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Tell();
}

int VSIFSeekL( VSILFILE * fp, vsi_l_offset nOffset, int nWhence )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->Seek( nOffset, nWhence );
}

int VSIFReadMultiRangeL( int nRanges, void ** ppData,
                         const vsi_l_offset* panOffsets,
                         const size_t* panSizes, VSILFILE * fp )
{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;

    return poFileHandle->ReadMultiRange( nRanges, ppData, panOffsets, panSizes );
}

int VSIFCloseL( FILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    int nResult = poFileHandle->Close();
    
    delete poFileHandle;

    return nResult;
}

int VSIFCloseL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    VSIDebug1( "VSICloseL(%p)", fp );
    
    int nResult = poFileHandle->Close();
    
    delete poFileHandle;

    return nResult;
}

int VSIFCloseL( VSILFILE * fp )

{
    VSIVirtualHandle *poFileHandle = reinterpret_cast<VSIVirtualHandle *>( fp );

    VSIDebug1( "VSIFCloseL(%p)", fp );

    const int nResult = poFileHandle->Close();

    delete poFileHandle;

    return nResult;
}

int VSISparseFileFilesystemHandler::Stat( const char * pszFilename, 
                                          VSIStatBufL * psStatBuf,
                                          int nFlags )

{
    VSIVirtualHandle *poFile = Open( pszFilename, "r" );

    memset( psStatBuf, 0, sizeof(VSIStatBufL) );

    if( poFile == NULL )
        return -1;

    poFile->Seek( 0, SEEK_END );
    size_t nLength = (size_t) poFile->Tell();
    delete poFile;

    int nResult = VSIStatExL( pszFilename + strlen("/vsisparse/"), 
                            psStatBuf, nFlags );

    psStatBuf->st_size = nLength;

    return nResult;
}

void *VSIFGetNativeFileDescriptorL( VSILFILE* fp )
{
    VSIVirtualHandle *poFileHandle = (VSIVirtualHandle *) fp;
    
    return poFileHandle->GetNativeFileDescriptor();
}

int VSIBufferedReaderHandle::Seek( vsi_l_offset nOffset, int nWhence )
{
    //CPLDebug( "BUFFERED", "Seek(%d,%d)", (int)nOffset, (int)nWhence);
    bEOF = FALSE;
    if (nWhence == SEEK_CUR)
        nCurOffset += nOffset;
    else if (nWhence == SEEK_END)
    {
        poBaseHandle->Seek(nOffset, nWhence);
        nCurOffset = poBaseHandle->Tell();
        bNeedBaseHandleSeek = TRUE;
    }
    else
        nCurOffset = nOffset;

    return 0;
}