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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: svt_flbytes.cxx,v $
 * $Revision: 1.4 $
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// MARKER(update_precomp.py): autogen include statement, do not remove


#ifndef _SV_SVAPP_HXX
#include <vcl/svapp.hxx>
#endif

#ifndef _FLBYTES_HXX
#include <flbytes.hxx>
#endif

#ifndef _SVSTDARR_ULONGS_DECL
#define _SVSTDARR_ULONGS
#include <bf_svtools/svstdarr.hxx>
#undef _SVSTDARR_ULONGS
#endif

//============================================================================
namespace binfilter
{

inline ULONG MyMin( long a, long b )
{
	return Max( long( Min(  a ,  b ) ), 0L );
}

//============================================================================
SV_DECL_IMPL_REF_LIST( SvLockBytes, SvLockBytes* )

//============================================================================
//
//  SvSyncLockBytes
//
//============================================================================

TYPEINIT1(SvSyncLockBytes, SvOpenLockBytes);

//============================================================================
// virtual
ErrCode SvSyncLockBytes::ReadAt(ULONG nPos, void * pBuffer, ULONG nCount,
								ULONG * pRead) const
{
	for (ULONG nReadTotal = 0;;)
	{
		ULONG nReadCount = 0;
		ErrCode nError = m_xAsyncLockBytes->ReadAt(nPos, pBuffer, nCount,
												   &nReadCount);
		nReadTotal += nReadCount;
		if (nError != ERRCODE_IO_PENDING || !IsSynchronMode())
		{
			if (pRead)
				*pRead = nReadTotal;
			return nError;
		}
		nPos += nReadCount;
		pBuffer = static_cast< sal_Char * >(pBuffer) + nReadCount;
		nCount -= nReadCount;
		Application::Yield();
	}
}

//============================================================================
// virtual
ErrCode SvSyncLockBytes::WriteAt(ULONG nPos, const void * pBuffer,
								 ULONG nCount, ULONG * pWritten)
{
	for (ULONG nWrittenTotal = 0;;)
	{
		ULONG nWrittenCount = 0;
		ErrCode nError = m_xAsyncLockBytes->WriteAt(nPos, pBuffer, nCount,
													&nWrittenCount);
		nWrittenTotal += nWrittenCount;
		if (nError != ERRCODE_IO_PENDING || !IsSynchronMode())
		{
			if (pWritten)
				*pWritten = nWrittenTotal;
			return nError;
		}
		nPos += nWrittenCount;
		pBuffer = static_cast< sal_Char const * >(pBuffer) + nWrittenCount;
		nCount -= nWrittenCount;
		Application::Yield();
	}
}

}
