DateFormatter: make TextToDate() long date calendar aware, tdf#125035
Using number formatter to display long date now can generate any
arbitrary date string in any calendar known to the locale. Cope
with non-default non-Gregorian calendars when parsing such string
back to a date and convert to Gregorian for the calendar widget.
This currently relies on month names being different between
calendars, which isn't fail-proof but at least works for the ar_DZ
Hijri->Gregorian case.
A better approach would be to remember the calendar used in the
number formatter output, but that's not available (yet?).
Change-Id: I829655275de4d1983b7e453624efca967b16a3bd
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118449
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins
diff --git a/vcl/source/control/field2.cxx b/vcl/source/control/field2.cxx
index 6ed04e3..0339052 100644
--- a/vcl/source/control/field2.cxx
+++ b/vcl/source/control/field2.cxx
@@ -36,6 +36,7 @@
#include <svdata.hxx>
#include <com/sun/star/i18n/XCharacterClassification.hpp>
#include <com/sun/star/i18n/CalendarFieldIndex.hdl>
#include <unotools/localedatawrapper.hxx>
#include <unotools/calendarwrapper.hxx>
@@ -1201,20 +1202,83 @@ static bool ImplCutMonthName( OUString& rStr, std::u16string_view _rLookupMonthN
return index >= 0;
}
static sal_uInt16 ImplCutMonthFromString( OUString& rStr, const CalendarWrapper& rCalendarWrapper )
static sal_uInt16 ImplGetMonthFromCalendarItem( OUString& rStr, const uno::Sequence< i18n::CalendarItem2 >& rMonths )
{
// search for a month' name
for ( sal_uInt16 i=1; i <= 12; i++ )
const sal_uInt16 nMonths = rMonths.getLength();
for (sal_uInt16 i=0; i < nMonths; ++i)
{
OUString aMonthName = rCalendarWrapper.getMonths()[i-1].FullName;
// long month name?
if ( ImplCutMonthName( rStr, aMonthName ) )
return i;
if ( ImplCutMonthName( rStr, rMonths[i].FullName ) )
return i+1;
// short month name?
OUString aAbbrevMonthName = rCalendarWrapper.getMonths()[i-1].AbbrevName;
if ( ImplCutMonthName( rStr, aAbbrevMonthName ) )
return i;
if ( ImplCutMonthName( rStr, rMonths[i].AbbrevName ) )
return i+1;
}
return 0;
}
static sal_uInt16 ImplCutMonthFromString( OUString& rStr, OUString& rCalendarName,
const LocaleDataWrapper& rLocaleData, const CalendarWrapper& rCalendarWrapper )
{
const OUString aDefaultCalendarName( rCalendarWrapper.getUniqueID());
rCalendarName = aDefaultCalendarName;
// Search for a month name of the loaded default calendar.
const uno::Sequence< i18n::CalendarItem2 > aMonths = rCalendarWrapper.getMonths();
sal_uInt16 nMonth = ImplGetMonthFromCalendarItem( rStr, aMonths);
if (nMonth > 0)
return nMonth;
// And also possessive genitive and partitive month names.
const uno::Sequence< i18n::CalendarItem2 > aGenitiveMonths = rCalendarWrapper.getGenitiveMonths();
if (aGenitiveMonths != aMonths)
{
nMonth = ImplGetMonthFromCalendarItem( rStr, aGenitiveMonths);
if (nMonth > 0)
return nMonth;
}
const uno::Sequence< i18n::CalendarItem2 > aPartitiveMonths = rCalendarWrapper.getPartitiveMonths();
if (aPartitiveMonths != aMonths)
{
nMonth = ImplGetMonthFromCalendarItem( rStr, aPartitiveMonths);
if (nMonth > 0)
return nMonth;
}
// Check if there are more calendars and try them if so, as the long date
// format is obtained from the number formatter this is possible (e.g.
// ar_DZ "[~hijri] ...")
const uno::Sequence< i18n::Calendar2 > aCalendars = rLocaleData.getAllCalendars();
if (aCalendars.getLength() > 1)
{
for (const auto& rCalendar : aCalendars)
{
if (rCalendar.Name != aDefaultCalendarName)
{
rCalendarName = rCalendar.Name;
nMonth = ImplGetMonthFromCalendarItem( rStr, rCalendar.Months);
if (nMonth > 0)
return nMonth;
if (rCalendar.Months != rCalendar.GenitiveMonths)
{
nMonth = ImplGetMonthFromCalendarItem( rStr, rCalendar.GenitiveMonths);
if (nMonth > 0)
return nMonth;
}
if (rCalendar.Months != rCalendar.PartitiveMonths)
{
nMonth = ImplGetMonthFromCalendarItem( rStr, rCalendar.PartitiveMonths);
if (nMonth > 0)
return nMonth;
}
rCalendarName = aDefaultCalendarName;
}
}
}
return ImplCutNumberFromString( rStr );
@@ -1251,26 +1315,50 @@ bool DateFormatter::TextToDate(const OUString& rStr, Date& rDate, ExtDateFieldFo
if ( eDateOrder == ExtDateFieldFormat::SystemLong )
{
OUString aCalendarName;
DateOrder eFormat = rLocaleDataWrapper.getLongDateOrder();
switch( eFormat )
{
case DateOrder::MDY:
nMonth = ImplCutMonthFromString( aStr, rCalendarWrapper );
nMonth = ImplCutMonthFromString( aStr, aCalendarName, rLocaleDataWrapper, rCalendarWrapper );
nDay = ImplCutNumberFromString( aStr );
nYear = ImplCutNumberFromString( aStr );
break;
case DateOrder::DMY:
nDay = ImplCutNumberFromString( aStr );
nMonth = ImplCutMonthFromString( aStr, rCalendarWrapper );
nMonth = ImplCutMonthFromString( aStr, aCalendarName, rLocaleDataWrapper, rCalendarWrapper );
nYear = ImplCutNumberFromString( aStr );
break;
case DateOrder::YMD:
default:
nYear = ImplCutNumberFromString( aStr );
nMonth = ImplCutMonthFromString( aStr, rCalendarWrapper );
nMonth = ImplCutMonthFromString( aStr, aCalendarName, rLocaleDataWrapper, rCalendarWrapper );
nDay = ImplCutNumberFromString( aStr );
break;
}
if (aCalendarName != "gregorian")
{
// Calendar widget is Gregorian, convert date.
// Need full date.
bError = !nDay || !nMonth || !nYear;
if (!bError)
{
CalendarWrapper aCW( rLocaleDataWrapper.getComponentContext());
aCW.loadCalendar( aCalendarName, rLocaleDataWrapper.getLoadedLanguageTag().getLocale());
aCW.setDateTime(0.5); // get rid of current time, set some day noon
aCW.setValue( i18n::CalendarFieldIndex::DAY_OF_MONTH, nDay);
aCW.setValue( i18n::CalendarFieldIndex::MONTH, nMonth - 1);
aCW.setValue( i18n::CalendarFieldIndex::YEAR, nYear);
bError = !aCW.isValid();
if (!bError)
{
Date aDate = aCW.getEpochStart() + aCW.getDateTime();
nYear = aDate.GetYear();
nMonth = aDate.GetMonth();
nDay = aDate.GetDay();
}
}
}
}
else
{
