Function FixTimeSpans

libs/editor/opening_hours_ui.cpp:36–97

}

bool FixTimeSpans(osmoh::Timespan openingTime, osmoh::TTimespans & spans)
{
  using osmoh::operator""_h;

  if (spans.empty())
    return true;

  for (auto & span : spans)
    if (span.HasExtendedHours())
      span.GetEnd().GetHourMinutes().AddDuration(24_h);

  std::sort(std::begin(spans), std::end(spans), [](osmoh::Timespan const & s1, osmoh::Timespan const s2)
  {
    auto const start1 = s1.GetStart().GetHourMinutes();
    auto const start2 = s2.GetStart().GetHourMinutes();

    // If two spans start at the same point the longest span should be leftmost.
    if (start1 == start2)
      return SpanLength(s1) > SpanLength(s2);

    return start1 < start2;
  });

  osmoh::TTimespans result{spans.front()};
  for (size_t i = 1, j = 0; i < spans.size(); ++i)
  {
    auto const start2 = spans[i].GetStart().GetHourMinutes().GetDuration();
    auto const end1 = spans[j].GetEnd().GetHourMinutes().GetDuration();
    auto const end2 = spans[i].GetEnd().GetHourMinutes().GetDuration();

    // The first one includes the second.
    if (start2 < end1 && end2 <= end1)
    {
      continue;
    }
    // Two spans have non-empty intersection.
    else if (start2 <= end1)
    {
      result.back().SetEnd(spans[i].GetEnd());
    }
    // The scond span starts after the end of the first one.
    else
    {
      result.push_back(spans[i]);
      ++j;
    }
  }

  // Check that all exclude time spans are included in opening time.
  if (openingTime.HasExtendedHours())
    openingTime.GetEnd().GetHourMinutes().AddDuration(24_h);

  if (!DoesIncludeAll(openingTime, spans))
    return false;

  for (auto & span : result)
    if (span.HasExtendedHours())
      span.GetEnd().GetHourMinutes().AddDuration(-24_h);