Function ReorderRTL

libs/drape/harfbuzz_shaping.cpp:189–211

}

void ReorderRTL(TextSegments & segments)
{
  // TODO(AB): Optimize implementation to use indexes to segments instead of copying them.
  auto it = segments.m_segments.begin();
  auto const end = segments.m_segments.end();
  // TODO(AB): Line (default rendering) direction is determined by the first segment. It should be defined as
  // a parameter depending on the language.
  auto const lineDirection = it->m_direction;
  while (it != end)
  {
    if (it->m_direction == lineDirection)
      ++it;
    else
    {
      auto const start = it++;
      while (it != end && it->m_direction != lineDirection)
        ++it;
      std::reverse(start, it);
    }
  }
  if (lineDirection != HB_DIRECTION_LTR)
    std::reverse(segments.m_segments.begin(), end);
}
}  // namespace

TextSegments GetTextSegments(std::string_view utf8)