Method GetIso8601WeekNumberingYear

be/src/runtime/timestamp-parse-util.cc:379–392

}

int TimestampParser::GetIso8601WeekNumberingYear(const boost::gregorian::date& d) {
  DCHECK(!d.is_special());
  DCHECK(1400 <= d.year() && d.year() <= 9999);

  static const boost::gregorian::date epoch(1970, 1, 1);
  DateValue dv((d - epoch).days());
  DCHECK(dv.IsValid());

  int week_numbering_year = dv.Iso8601WeekNumberingYear();
  // 1400.01.01 is Wednesday. 9999.12.31 is Friday.
  // This means that week_numbering_year must fall in the [1400, 9999] range.
  DCHECK(1400 <= week_numbering_year && week_numbering_year <= 9999);
  return week_numbering_year;
}

}