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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 <connectivity/dbconversion.hxx>
#include <com/sun/star/sdbc/SQLException.hpp>
#include <com/sun/star/util/Date.hpp>
#include <com/sun/star/util/Time.hpp>
#include <com/sun/star/util/DateTime.hpp>
#include <rtl/character.hxx>
#include <rtl/math.hxx>
#include <sal/log.hxx>
#include <unotools/datetime.hxx>
#include <comphelper/date.hxx>
#include <o3tl/string_view.hxx>
#include <sstream>
#include <iomanip>
namespace
{
const sal_Int64 nanoSecInSec = 1000000000;
const sal_Int16 secInMin = 60;
const sal_Int16 minInHour = 60;
const sal_Int64 secMask = 1000000000;
const sal_Int64 minMask = 100000000000LL;
const sal_Int64 hourMask = 10000000000000LL;
const double fNanoSecondsPerDay = nanoSecInSec * secInMin * minInHour * 24.0;
// 32767-12-31 in "(days since 0001-01-01) + 1" format
const sal_Int32 maxDays = 11967896;
// -32768-01-01 in "(days since 0001-01-01) + 1" format
// Yes, I know it is currently unused. Will have to be used
// when we implement negative years. Writing down the correct
// value for future reference.
// *** Please don't remove just because it is unused ***
// Lionel Élie Mamane 2017-08-02
// const sal_Int32 minDays = -11968270;
}
namespace dbtools
{
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::util;
using namespace ::com::sun::star::sdb;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
css::util::Date const & DBTypeConversion::getStandardDate()
{
static css::util::Date STANDARD_DB_DATE(1,1,1900);
return STANDARD_DB_DATE;
}
OUString DBTypeConversion::toDateString(const css::util::Date& rDate)
{
std::ostringstream ostr;
using std::setw;
ostr.fill('0');
ostr << setw(4) << rDate.Year << "-"
<< setw(2) << rDate.Month << "-"
<< setw(2) << rDate.Day;
return OUString::createFromAscii(ostr.str());
}
OUString DBTypeConversion::toTimeStringS(const css::util::Time& rTime)
{
std::ostringstream ostr;
using std::setw;
ostr.fill('0');
ostr << setw(2) << rTime.Hours << ":"
<< setw(2) << rTime.Minutes << ":"
<< setw(2) << rTime.Seconds;
return OUString::createFromAscii(ostr.str());
}
OUString DBTypeConversion::toTimeString(const css::util::Time& rTime)
{
std::ostringstream ostr;
using std::setw;
ostr.fill('0');
ostr << setw(2) << rTime.Hours << ":"
<< setw(2) << rTime.Minutes << ":"
<< setw(2) << rTime.Seconds << "."
<< setw(9) << rTime.NanoSeconds;
return OUString::createFromAscii(ostr.str());
}
OUString DBTypeConversion::toDateTimeString(const css::util::DateTime& _rDateTime)
{
css::util::Date aDate(_rDateTime.Day,_rDateTime.Month,_rDateTime.Year);
css::util::Time const aTime(_rDateTime.NanoSeconds, _rDateTime.Seconds,
_rDateTime.Minutes, _rDateTime.Hours, _rDateTime.IsUTC);
return toDateString(aDate) + " " + toTimeString(aTime);
}
css::util::Date DBTypeConversion::toDate(const sal_Int32 _nVal)
{
css::util::Date aReturn;
aReturn.Day = static_cast<sal_uInt16>(_nVal % 100);
aReturn.Month = static_cast<sal_uInt16>((_nVal / 100) % 100);
aReturn.Year = static_cast<sal_uInt16>(_nVal / 10000);
return aReturn;
}
css::util::Time DBTypeConversion::toTime(const sal_Int64 _nVal)
{
css::util::Time aReturn;
sal_uInt64 unVal = static_cast<sal_uInt64>(_nVal >= 0 ? _nVal : -_nVal);
aReturn.Hours = unVal / hourMask;
aReturn.Minutes = (unVal / minMask) % 100;
aReturn.Seconds = (unVal / secMask) % 100;
aReturn.NanoSeconds = unVal % secMask;
return aReturn;
}
sal_Int64 DBTypeConversion::getNsFromTime(const css::util::Time& rVal)
{
sal_Int32 nHour = rVal.Hours;
sal_Int32 nMin = rVal.Minutes;
sal_Int32 nSec = rVal.Seconds;
sal_Int32 nNanoSec = rVal.NanoSeconds;
return nNanoSec +
nSec * nanoSecInSec +
nMin * (secInMin * nanoSecInSec) +
nHour * (minInHour * secInMin * nanoSecInSec);
}
static sal_Int32 implRelativeToAbsoluteNull(const css::util::Date& _rDate)
{
if (_rDate.Day == 0 && _rDate.Month == 0 && _rDate.Year == 0)
{
// 0000-00-00 is *NOT* a valid date and passing it to the date
// conversion even when normalizing rightly asserts. Whatever we
// return here, it will be wrong. The old before commit
// 52ff16771ac160d27fd7beb78a4cfba22ad84f06 wrong implementation
// calculated -365 for that, effectively that would be a date of
// -0001-01-01 now but it was likely assumed that would be
// 0000-00-01 or even 0000-00-00 instead. Try if we get away with 0
// for -0001-12-31, the same that
// comphelper::date::convertDateToDaysNormalizing()
// would return if comphelper::date::normalize() wouldn't ignore
// such "empty" date.
return 0;
}
return comphelper::date::convertDateToDaysNormalizing( _rDate.Day, _rDate.Month, _rDate.Year);
}
sal_Int32 DBTypeConversion::toDays(const css::util::Date& _rVal, const css::util::Date& _rNullDate)
{
return implRelativeToAbsoluteNull(_rVal) - implRelativeToAbsoluteNull(_rNullDate);
}
double DBTypeConversion::toDouble(const css::util::Date& rVal, const css::util::Date& _rNullDate)
{
return static_cast<double>(toDays(rVal, _rNullDate));
}
double DBTypeConversion::toDouble(const css::util::Time& rVal)
{
return static_cast<double>(getNsFromTime(rVal)) / fNanoSecondsPerDay;
}
double DBTypeConversion::toDouble(const css::util::DateTime& _rVal, const css::util::Date& _rNullDate)
{
sal_Int64 nTime = toDays(css::util::Date(_rVal.Day, _rVal.Month, _rVal.Year), _rNullDate);
css::util::Time aTimePart;
aTimePart.Hours = _rVal.Hours;
aTimePart.Minutes = _rVal.Minutes;
aTimePart.Seconds = _rVal.Seconds;
aTimePart.NanoSeconds = _rVal.NanoSeconds;
return static_cast<double>(nTime) + toDouble(aTimePart);
}
static void addDays(const sal_Int32 nDays, css::util::Date& _rDate)
{
sal_Int64 nTempDays = implRelativeToAbsoluteNull(_rDate);
nTempDays += nDays;
if ( nTempDays > maxDays )
{
_rDate.Day = 31;
_rDate.Month = 12;
_rDate.Year = 9999;
}
// TODO: can we replace that check by minDays? Would allow dates BCE
else if ( nTempDays <= 0 )
{
_rDate.Day = 1;
_rDate.Month = 1;
_rDate.Year = 1;
}
else
comphelper::date::convertDaysToDate( nTempDays, _rDate.Day, _rDate.Month, _rDate.Year );
}
static void subDays(const sal_Int32 nDays, css::util::Date& _rDate )
{
sal_Int64 nTempDays = implRelativeToAbsoluteNull(_rDate);
nTempDays -= nDays;
if ( nTempDays > maxDays )
{
_rDate.Day = 31;
_rDate.Month = 12;
_rDate.Year = 9999;
}
// TODO: can we replace that check by minDays? Would allow dates BCE
else if ( nTempDays <= 0 )
{
_rDate.Day = 1;
_rDate.Month = 1;
_rDate.Year = 1;
}
else
comphelper::date::convertDaysToDate( nTempDays, _rDate.Day, _rDate.Month, _rDate.Year );
}
css::util::Date DBTypeConversion::toDate(const double dVal, const css::util::Date& _rNullDate)
{
css::util::Date aRet = _rNullDate;
if (dVal >= 0)
addDays(static_cast<sal_Int32>(dVal),aRet);
else
subDays(static_cast<sal_uInt32>(-dVal),aRet);
// x -= (sal_uInt32)(-nDays);
return aRet;
}
css::util::Time DBTypeConversion::toTime(const double dVal, short nDigits)
{
const double nDays = std::trunc(dVal);
double fSeconds((dVal - nDays) * (fNanoSecondsPerDay / nanoSecInSec));
fSeconds = ::rtl::math::round(fSeconds, nDigits);
sal_Int64 nNS = fSeconds * nanoSecInSec;
sal_Int16 nSign;
if ( nNS < 0 )
{
nNS *= -1;
nSign = -1;
}
else
nSign = 1;
css::util::Time aRet;
// normalize time
// we have to sal_Int32 here because otherwise we get an overflow
sal_Int64 nNanoSeconds = nNS;
sal_Int32 nSeconds = nNanoSeconds / nanoSecInSec;
sal_Int32 nMinutes = nSeconds / secInMin;
aRet.NanoSeconds = nNanoSeconds % nanoSecInSec;
aRet.Seconds = nSeconds % secInMin;
aRet.Hours = nMinutes / minInHour;
aRet.Minutes = nMinutes % minInHour;
// assemble time
sal_Int64 nTime = nSign *
(aRet.NanoSeconds +
aRet.Seconds * secMask +
aRet.Minutes * minMask +
aRet.Hours * hourMask);
if(nTime < 0)
{
aRet.NanoSeconds = nanoSecInSec-1;
aRet.Seconds = secInMin-1;
aRet.Minutes = minInHour-1;
aRet.Hours = 23;
}
return aRet;
}
css::util::DateTime DBTypeConversion::toDateTime(const double dVal, const css::util::Date& _rNullDate)
{
css::util::DateTime aRet;
if (!std::isfinite(dVal))
{
SAL_WARN("connectivity.commontools", "DateTime has invalid value: " << dVal);
return aRet;
}
css::util::Date aDate = toDate(dVal, _rNullDate);
// there is not enough precision in a double to have both a date
// and a time up to nanoseconds -> limit to microseconds to have
// correct rounding, that is e.g. 13:00:00.000000000 instead of
// 12:59:59.999999790
css::util::Time aTime = toTime(dVal, 6);
aRet.Day = aDate.Day;
aRet.Month = aDate.Month;
aRet.Year = aDate.Year;
aRet.NanoSeconds = aTime.NanoSeconds;
aRet.Minutes = aTime.Minutes;
aRet.Seconds = aTime.Seconds;
aRet.Hours = aTime.Hours;
return aRet;
}
css::util::Date DBTypeConversion::toDate(std::u16string_view _sSQLString)
{
// get the token out of a string
static const sal_Unicode sDateSep = '-';
sal_Int32 nIndex = 0;
sal_uInt16 nYear = 0,
nMonth = 0,
nDay = 0;
nYear = static_cast<sal_uInt16>(o3tl::toInt32(o3tl::getToken(_sSQLString, 0,sDateSep,nIndex)));
if(nIndex != -1)
{
nMonth = static_cast<sal_uInt16>(o3tl::toInt32(o3tl::getToken(_sSQLString, 0,sDateSep,nIndex)));
if(nIndex != -1)
nDay = static_cast<sal_uInt16>(o3tl::toInt32(o3tl::getToken(_sSQLString, 0,sDateSep,nIndex)));
}
return css::util::Date(nDay,nMonth,nYear);
}
css::util::DateTime DBTypeConversion::toDateTime(const OUString& _sSQLString)
{
//@see http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Timestamp.html#valueOf(java.lang.String)
//@see http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Date.html#valueOf(java.lang.String)
//@see http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Time.html#valueOf(java.lang.String)
// the date part
css::util::Date aDate = toDate(_sSQLString);
css::util::Time aTime;
sal_Int32 nSeparation = _sSQLString.indexOf( ' ' );
if ( -1 != nSeparation )
{
const sal_Unicode *p = _sSQLString.getStr() + nSeparation;
const sal_Unicode *const begin = p;
while (rtl::isAsciiWhiteSpace(*p)) { ++p; }
nSeparation += p - begin;
aTime = toTime( _sSQLString.subView( nSeparation ) );
}
return css::util::DateTime(aTime.NanoSeconds, aTime.Seconds, aTime.Minutes, aTime.Hours,
aDate.Day, aDate.Month, aDate.Year, false);
}
css::util::Time DBTypeConversion::toTime(std::u16string_view _sSQLString)
{
css::util::Time aTime;
::utl::ISO8601parseTime(_sSQLString, aTime);
return aTime;
}
} // namespace dbtools
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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