summaryrefslogtreecommitdiffstats
path: root/connectivity/source/commontools/dbconversion.cxx
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--connectivity/source/commontools/dbconversion.cxx461
1 files changed, 461 insertions, 0 deletions
diff --git a/connectivity/source/commontools/dbconversion.cxx b/connectivity/source/commontools/dbconversion.cxx
new file mode 100644
index 000000000..3dd42e9ca
--- /dev/null
+++ b/connectivity/source/commontools/dbconversion.cxx
@@ -0,0 +1,461 @@
+/* -*- 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 <osl/diagnose.h>
+#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/ustrbuf.hxx>
+#include <rtl/math.hxx>
+#include <unotools/datetime.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().c_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().c_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().c_str());
+ }
+
+ OUString DBTypeConversion::toDateTimeString(const css::util::DateTime& _rDateTime)
+ {
+ css::util::Date aDate(_rDateTime.Day,_rDateTime.Month,_rDateTime.Year);
+ OUStringBuffer aTemp(toDateString(aDate));
+ aTemp.append(" ");
+ css::util::Time const aTime(_rDateTime.NanoSeconds, _rDateTime.Seconds,
+ _rDateTime.Minutes, _rDateTime.Hours, _rDateTime.IsUTC);
+ aTemp.append( toTimeString(aTime) );
+ return aTemp.makeStringAndClear();
+ }
+
+ 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 const sal_Int32 aDaysInMonth[12] = { 31, 28, 31, 30, 31, 30,
+ 31, 31, 30, 31, 30, 31 };
+
+
+ static bool implIsLeapYear(sal_Int32 _nYear)
+ {
+ return ( ((_nYear % 4) == 0)
+ && ((_nYear % 100) != 0)
+ )
+
+ || ((_nYear % 400) == 0)
+ ;
+ }
+
+
+ static sal_Int32 implDaysInMonth(sal_Int32 _nMonth, sal_Int32 _nYear)
+ {
+ OSL_ENSURE(_nMonth > 0 && _nMonth < 13,"Month as invalid value!");
+ if (_nMonth != 2)
+ return aDaysInMonth[_nMonth-1];
+ else
+ {
+ if (implIsLeapYear(_nYear))
+ return aDaysInMonth[_nMonth-1] + 1;
+ else
+ return aDaysInMonth[_nMonth-1];
+ }
+ }
+
+
+ static sal_Int32 implRelativeToAbsoluteNull(const css::util::Date& _rDate)
+ {
+ sal_Int32 nDays = 0;
+
+ // ripped this code from the implementation of tools::Date
+ sal_Int32 nNormalizedYear = _rDate.Year - 1;
+ nDays = nNormalizedYear * 365;
+ // leap years
+ nDays += (nNormalizedYear / 4) - (nNormalizedYear / 100) + (nNormalizedYear / 400);
+
+ for (sal_Int32 i = 1; i < _rDate.Month; ++i)
+ nDays += implDaysInMonth(i, _rDate.Year);
+
+ nDays += _rDate.Day;
+ return nDays;
+ }
+
+ static void implBuildFromRelative( const sal_Int32 nDays, sal_uInt16& rDay, sal_uInt16& rMonth, sal_Int16& rYear)
+ {
+ sal_Int32 nTempDays;
+ sal_Int32 i = 0;
+ bool bCalc;
+
+ do
+ {
+ nTempDays = nDays;
+ rYear = static_cast<sal_uInt16>((nTempDays / 365) - i);
+ nTempDays -= (rYear-1) * 365;
+ nTempDays -= ((rYear-1) / 4) - ((rYear-1) / 100) + ((rYear-1) / 400);
+ bCalc = false;
+ if ( nTempDays < 1 )
+ {
+ i++;
+ bCalc = true;
+ }
+ else
+ {
+ if ( nTempDays > 365 )
+ {
+ if ( (nTempDays != 366) || !implIsLeapYear( rYear ) )
+ {
+ i--;
+ bCalc = true;
+ }
+ }
+ }
+ }
+ while ( bCalc );
+
+ rMonth = 1;
+ while ( nTempDays > implDaysInMonth( rMonth, rYear ) )
+ {
+ nTempDays -= implDaysInMonth( rMonth, rYear );
+ rMonth++;
+ }
+ rDay = static_cast<sal_uInt16>(nTempDays);
+ }
+
+ 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_Int32 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
+ // implBuildFromRelative probably needs to be updated for the "no year 0" question
+ else if ( nTempDays <= 0 )
+ {
+ _rDate.Day = 1;
+ _rDate.Month = 1;
+ _rDate.Year = 1;
+ }
+ else
+ implBuildFromRelative( nTempDays, _rDate.Day, _rDate.Month, _rDate.Year );
+ }
+
+ static void subDays(const sal_Int32 nDays, css::util::Date& _rDate )
+ {
+ sal_Int32 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
+ // implBuildFromRelative probably needs to be updated for the "no year 0" question
+ else if ( nTempDays <= 0 )
+ {
+ _rDate.Day = 1;
+ _rDate.Month = 1;
+ _rDate.Year = 1;
+ }
+ else
+ implBuildFromRelative( 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 sal_Int32 nDays = static_cast<sal_Int32>(dVal);
+ sal_Int64 nNS;
+ {
+ double fSeconds((dVal - static_cast<double>(nDays)) * (fNanoSecondsPerDay / nanoSecInSec));
+ fSeconds = ::rtl::math::round( fSeconds, nDigits );
+ 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::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);
+
+ css::util::DateTime aRet;
+
+ 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(const OUString& _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>(_sSQLString.getToken(0,sDateSep,nIndex).toInt32());
+ if(nIndex != -1)
+ {
+ nMonth = static_cast<sal_uInt16>(_sSQLString.getToken(0,sDateSep,nIndex).toInt32());
+ if(nIndex != -1)
+ nDay = static_cast<sal_uInt16>(_sSQLString.getToken(0,sDateSep,nIndex).toInt32());
+ }
+
+ 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.copy( 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(const OUString& _sSQLString)
+ {
+ css::util::Time aTime;
+ ::utl::ISO8601parseTime(_sSQLString, aTime);
+ return aTime;
+ }
+
+
+} // namespace dbtools
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 04:48:25 +0000