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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 <stringconversiontools.hxx>
#include <rtl/math.hxx>
namespace basegfx::internal
{
void skipSpaces(sal_Int32& io_rPos,
std::u16string_view rStr,
const sal_Int32 nLen)
{
while( io_rPos < nLen &&
rStr[io_rPos] == ' ' )
{
++io_rPos;
}
}
static void skipSpacesAndCommas(sal_Int32& io_rPos,
std::u16string_view rStr,
const sal_Int32 nLen)
{
while(io_rPos < nLen
&& (rStr[io_rPos] == ' ' || rStr[io_rPos] == ','))
{
++io_rPos;
}
}
static bool getDoubleChar(double& o_fRetval,
sal_Int32& io_rPos,
std::u16string_view rStr)
{
const sal_Int64 nStrSize = rStr.size();
sal_Unicode aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
const sal_Int32 nStartPos = io_rPos;
// sign
if(aChar == '+' || aChar == '-')
{
aChar = rStr[++io_rPos];
}
// numbers before point
while('0' <= aChar && '9' >= aChar)
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
}
// point
if(aChar == '.')
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
}
// numbers after point
while ('0' <= aChar && '9' >= aChar)
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
}
// 'e'
if(aChar == 'e' || aChar == 'E')
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
// sign for 'e'
if(aChar == '+' || aChar == '-')
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
}
// number for 'e'
while('0' <= aChar && '9' >= aChar)
{
io_rPos++;
aChar = io_rPos < nStrSize ? rStr[io_rPos] : 0;
}
}
const sal_Int32 nLen = io_rPos - nStartPos;
if(nLen)
{
rStr = rStr.substr(nStartPos, nLen);
rtl_math_ConversionStatus eStatus;
o_fRetval = ::rtl::math::stringToDouble( rStr,
'.',
',',
&eStatus );
return ( eStatus == rtl_math_ConversionStatus_Ok );
}
return false;
}
bool importDoubleAndSpaces(double& o_fRetval,
sal_Int32& io_rPos,
std::u16string_view rStr,
const sal_Int32 nLen )
{
if( !getDoubleChar(o_fRetval, io_rPos, rStr) )
return false;
skipSpacesAndCommas(io_rPos, rStr, nLen);
return true;
}
bool importFlagAndSpaces(sal_Int32& o_nRetval,
sal_Int32& io_rPos,
std::u16string_view rStr,
const sal_Int32 nLen)
{
sal_Unicode aChar( rStr[io_rPos] );
if(aChar == '0')
{
o_nRetval = 0;
++io_rPos;
}
else if (aChar == '1')
{
o_nRetval = 1;
++io_rPos;
}
else
return false;
skipSpacesAndCommas(io_rPos, rStr, nLen);
return true;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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