// Parse a regex match which includes 'day', 'month' and 'year' (optional) group
private DateTimeResolutionResult Match2Date(Match match, DateObject referenceDate, string relativeStr)
{
var ret = new DateTimeResolutionResult();
int month = 0, day = 0, year = 0;
var monthStr = match.Groups["month"].Value;
var dayStr = match.Groups["day"].Value;
var weekdayStr = match.Groups["weekday"].Value;
var yearStr = match.Groups["year"].Value;
var writtenYear = match.Groups["fullyear"].Value;
var ambiguousCentury = false;
if (this.config.MonthOfYear.ContainsKey(monthStr) && this.config.DayOfMonth.ContainsKey(dayStr))
{
month = this.config.MonthOfYear[monthStr];
day = this.config.DayOfMonth[dayStr];
if (!string.IsNullOrEmpty(writtenYear))
{
year = this.config.DateExtractor.GetYearFromText(match);
}
else if (!string.IsNullOrEmpty(yearStr))
{
year = int.Parse(yearStr, CultureInfo.InvariantCulture);
if (year < 100 && year >= Constants.MinTwoDigitYearPastNum)
{
year += Constants.BASE_YEAR_PAST_CENTURY;
}
else if (year >= 0 && year < Constants.MaxTwoDigitYearFutureNum)
{
year += Constants.BASE_YEAR_CURRENT_CENTURY;
}
else if (year >= Constants.MaxTwoDigitYearFutureNum && year < Constants.MinTwoDigitYearPastNum)
{
// Two-digit years in the range [30, 40) are ambiguos
ambiguousCentury = true;
}
}
}
var noYear = false;
if (year == 0)
{
year = referenceDate.Year;
if (!string.IsNullOrEmpty(relativeStr))
{
var swift = this.config.GetSwiftMonthOrYear(relativeStr);
// @TODO Improve handling of next/last in particular cases "next friday 5/12" when the next friday is not 5/12.
if (!string.IsNullOrEmpty(weekdayStr))
{
swift = 0;
}
year += swift;
}
else
{
noYear = true;
}
ret.Timex = DateTimeFormatUtil.LuisDate(-1, month, day);
}
else
{
ret.Timex = DateTimeFormatUtil.LuisDate(year, month, day);
}
var futurePastDates = DateContext.GenerateDates(noYear, referenceDate, year, month, day);
ret.FutureValue = futurePastDates.future;
ret.PastValue = futurePastDates.past;
ret.Success = true;
// Ambiguous two-digit years are assigned values in both centuries (e.g. 35 -> 1935, 2035)
if (ambiguousCentury)
{
ret.PastValue = futurePastDates.past.AddYears(Constants.BASE_YEAR_PAST_CENTURY);
ret.FutureValue = futurePastDates.future.AddYears(Constants.BASE_YEAR_CURRENT_CENTURY);
ret.Timex = TimexUtility.ModifyAmbiguousCenturyTimex(ret.Timex);
}
return(ret);
}