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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <biffhelper.hxx>
#include <rtl/math.hxx>
#include <rtl/tencinfo.h>
#include <osl/diagnose.h>
#include <worksheethelper.hxx>
#include <oox/helper/binaryoutputstream.hxx>
#include <oox/helper/binaryinputstream.hxx>
namespace oox {
namespace xls {
namespace {
const sal_Int32 BIFF_RK_100FLAG = 0x00000001;
const sal_Int32 BIFF_RK_INTFLAG = 0x00000002;
const sal_Int32 BIFF_RK_VALUEMASK = 0xFFFFFFFC;
union DecodedDouble
{
double mfValue;
sal_math_Double maStruct;
explicit DecodedDouble() {}
explicit DecodedDouble( double fValue ) : mfValue( fValue ) {}
};
} // namespace
// conversion -----------------------------------------------------------------
/*static*/ double BiffHelper::calcDoubleFromRk( sal_Int32 nRkValue )
{
DecodedDouble aDecDbl( 0.0 );
if( getFlag( nRkValue, BIFF_RK_INTFLAG ) )
{
sal_Int32 nTemp = nRkValue >> 2;
setFlag< sal_Int32 >( nTemp, 0xE0000000, nRkValue < 0 );
aDecDbl.mfValue = nTemp;
}
else
{
aDecDbl.maStruct.w32_parts.msw = static_cast< sal_uInt32 >( nRkValue & BIFF_RK_VALUEMASK );
}
if( getFlag( nRkValue, BIFF_RK_100FLAG ) )
aDecDbl.mfValue /= 100.0;
return aDecDbl.mfValue;
}
/*static*/ double BiffHelper::calcDoubleFromError( sal_uInt8 nErrorCode )
{
sal_uInt16 nApiError = 0x7FFF;
switch( nErrorCode )
{
case BIFF_ERR_NULL: nApiError = 521; break;
case BIFF_ERR_DIV0: nApiError = 532; break;
case BIFF_ERR_VALUE: nApiError = 519; break;
case BIFF_ERR_REF: nApiError = 524; break;
case BIFF_ERR_NAME: nApiError = 525; break;
case BIFF_ERR_NUM: nApiError = 503; break;
case BIFF_ERR_NA: nApiError = 0x7FFF; break;
default: OSL_FAIL( "BiffHelper::calcDoubleFromError - unknown error code" );
}
DecodedDouble aDecDbl;
::rtl::math::setNan( &aDecDbl.mfValue );
aDecDbl.maStruct.nan_parts.fraction_lo = nApiError;
return aDecDbl.mfValue;
}
// BIFF12 import --------------------------------------------------------------
/*static*/ OUString BiffHelper::readString( SequenceInputStream& rStrm, bool b32BitLen, bool bAllowNulChars )
{
OUString aString;
if( !rStrm.isEof() )
{
sal_Int32 nCharCount = b32BitLen ? rStrm.readValue< sal_Int32 >() : rStrm.readValue< sal_Int16 >();
// string length -1 is often used to indicate a missing string
OSL_ENSURE( !rStrm.isEof() && (nCharCount >= -1), "BiffHelper::readString - invalid string length" );
if( !rStrm.isEof() && (nCharCount > 0) )
{
// SequenceInputStream always supports getRemaining()
nCharCount = ::std::min( nCharCount, static_cast< sal_Int32 >( rStrm.getRemaining() / 2 ) );
aString = rStrm.readUnicodeArray( nCharCount, bAllowNulChars );
}
}
return aString;
}
} // namespace xls
} // namespace oox
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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