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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: */