Function IsActiveImpl

3party/opening_hours/rules_evaluation.cpp:349–371

@return [day active, time active].

/// @return [day active, time active].
std::pair<bool, bool> IsActiveImpl(RuleSequence const & rule, time_t const timestamp)
{
  if (rule.IsTwentyFourHours())
    return {true, true};

  auto const dateTimeTM = MakeTimetuple(timestamp);
  if (!HasExtendedHours(rule))
    return MakeActiveResult(rule, dateTimeTM, rule.GetTimes());

  TTimespans originalNormalizedSpans;
  Timespan additionalSpan;
  SplitExtendedHours(rule.GetTimes(), originalNormalizedSpans, additionalSpan);

  auto const res1 = MakeActiveResult(rule, dateTimeTM, originalNormalizedSpans);
  if (res1.first && res1.second)
    return res1;

  time_t constexpr twentyFourHoursShift = 24 * 60 * 60;
  auto const dateTimeTMShifted = MakeTimetuple(timestamp - twentyFourHoursShift);

  auto const res2 = MakeActiveResult(rule, dateTimeTMShifted, additionalSpan);
  return { res1.first || res2.first, res2.second };
}

/// Check if r1 is more general range and includes r2.
bool IsR1IncludesR2(RuleSequence const & r1, RuleSequence const & r2)