fix: calendar week numbers

fix their format to correct

fix last number hide if the last day of the month is the last day of the week

some refactoring(mostly renaming abbreviations to the full phrases)

src/modules/clock.cpp

@@ -113,8 +113,12 @@ auto waybar::modules::Clock::update() -> void {
     if (config_["tooltip-format"].isString()) {
       std::string calendar_lines{""};
       std::string timezoned_time_lines{""};
-      if (is_calendar_in_tooltip_) calendar_lines = calendar_text(wtime);
+      if (is_calendar_in_tooltip_) {
-      if (is_timezoned_list_in_tooltip_) timezoned_time_lines = timezones_text(&now);
+        calendar_lines = calendar_text(wtime);
+      }
+      if (is_timezoned_list_in_tooltip_) {
+        timezoned_time_lines = timezones_text(&now);
+      }
       auto tooltip_format = config_["tooltip-format"].asString();
       text =
           fmt::format(tooltip_format, wtime, fmt::arg(kCalendarPlaceholder.c_str(), calendar_lines),
@@ -168,72 +172,77 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
   const auto daypoint = date::floor<date::days>(wtime.ztime.get_local_time());
   const auto ymd{date::year_month_day{daypoint}};
 
-  if (calendar_cached_ymd_ == ymd) return calendar_cached_text_;
+  if (calendar_cached_ymd_ == ymd) {
+    return calendar_cached_text_;
+  }
 
   const auto curr_day{(calendar_shift_init_.count() != 0 && calendar_shift_.count() != 0)
                           ? date::day{0}
                           : ymd.day()};
   const date::year_month ym{ymd.year(), ymd.month()};
-  const auto week_format{config_["format-calendar-weekdays"].isString()
+  const auto weeks_format{config_["format-calendar-weeks"].isString()
-                             ? config_["format-calendar-weekdays"].asString()
-                             : ""};
-  const auto wn_format{config_["format-calendar-weeks"].isString()
                               ? config_["format-calendar-weeks"].asString()
                               : ""};
 
   std::stringstream os;
 
-  const auto first_dow = first_day_of_week();
+  const date::weekday first_week_day = first_day_of_week();
-  int ws{0};  // weeks-pos: side(1 - left, 2 - right)
+
+  enum class WeeksPlacement {
+    LEFT,
+    RIGHT,
+    HIDDEN,
+  };
+  WeeksPlacement weeks_pos = WeeksPlacement::HIDDEN;
 
   if (config_["calendar-weeks-pos"].isString()) {
     if (config_["calendar-weeks-pos"].asString() == "left") {
-      ws = 1;
+      weeks_pos = WeeksPlacement::LEFT;
       // Add paddings before the header
       os << std::string(4, ' ');
     } else if (config_["calendar-weeks-pos"].asString() == "right") {
-      ws = 2;
+      weeks_pos = WeeksPlacement::RIGHT;
     }
   }
 
-  weekdays_header(first_dow, os);
+  weekdays_header(first_week_day, os);
 
   // First week prefixed with spaces if needed.
-  auto wd = date::weekday(ym / 1);
+  auto first_month_day = date::weekday(ym / 1);
-  auto empty_days = (wd - first_dow).count();
+  int empty_days = (first_week_day - first_month_day).count() + 1;
-  date::sys_days lwd{static_cast<date::sys_days>(ym / 1) + date::days{7 - empty_days}};
+  date::sys_days last_week_day{static_cast<date::sys_days>(ym / 1) + date::days{7 - empty_days}};
 
-  if (first_dow == date::Monday) {
+  if (first_week_day == date::Monday) {
-    lwd -= date::days{1};
+    last_week_day -= date::days{1};
   }
   /* Print weeknumber on the left for the first row*/
-  if (ws == 1) {
+  if (weeks_pos == WeeksPlacement::LEFT) {
-    os << fmt::format(wn_format, lwd);
+    os << fmt::format(weeks_format, date::format("%U", last_week_day)) << ' ';
-    os << ' ';
+    last_week_day += date::weeks{1};
-    lwd += date::weeks{1};
   }
 
   if (empty_days > 0) {
     os << std::string(empty_days * 3 - 1, ' ');
   }
-  auto last_day = (ym / date::literals::last).day();
+  const auto last_day = (ym / date::literals::last).day();
-  for (auto d = date::day(1); d <= last_day; ++d, ++wd) {
+  auto weekday = first_month_day;
-    if (wd != first_dow) {
+  for (auto d = date::day(1); d <= last_day; ++d, ++weekday) {
+    if (weekday != first_week_day) {
       os << ' ';
     } else if (unsigned(d) != 1) {
-      if (ws == 2) {
+      last_week_day -= date::days{1};
+      if (weeks_pos == WeeksPlacement::RIGHT) {
         os << ' ';
-        os << fmt::format(wn_format, lwd);
+        os << fmt::format(weeks_format, date::format("%U", last_week_day));
-        lwd += date::weeks{1};
       }
 
-      os << '\n';
+      os << "\n";
 
-      if (ws == 1) {
+      if (weeks_pos == WeeksPlacement::LEFT) {
-        os << fmt::format(wn_format, lwd);
+        os << fmt::format(weeks_format, date::format("%U", last_week_day));
         os << ' ';
-        lwd += date::weeks{1};
       }
+      last_week_day += date::weeks{1} + date::days{1};
     }
     if (d == curr_day) {
       if (config_["today-format"].isString()) {
@@ -244,15 +253,16 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
       }
     } else if (config_["format-calendar"].isString()) {
       os << fmt::format(config_["format-calendar"].asString(), date::format("%e", d));
-    } else
+    } else {
       os << date::format("%e", d);
-    /*Print weeks on the right when the endings with spaces*/
-    if (ws == 2 && d == last_day) {
-      empty_days = 6 - (wd.c_encoding() - first_dow.c_encoding());
-      if (empty_days > 0) {
-        os << std::string(empty_days * 3 + 1, ' ');
-        os << fmt::format(wn_format, lwd);
     }
+    /*Print weeks on the right when the endings with spaces*/
+    if (weeks_pos == WeeksPlacement::RIGHT && d == last_day) {
+      last_week_day -= date::days{1};
+      empty_days = 6 - (weekday - first_week_day).count();
+      os << std::string(empty_days * 3 + 1, ' ');
+      os << fmt::format(weeks_format, date::format("%U", last_week_day));
+      last_week_day += date::days{1};
     }
   }
 
@@ -262,12 +272,14 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
   return result;
 }
 
-auto waybar::modules::Clock::weekdays_header(const date::weekday& first_dow, std::ostream& os)
+auto waybar::modules::Clock::weekdays_header(const date::weekday& first_week_day, std::ostream& os)
     -> void {
   std::stringstream res;
-  auto wd = first_dow;
+  auto wd = first_week_day;
   do {
-    if (wd != first_dow) res << ' ';
+    if (wd != first_week_day) {
+      res << ' ';
+    }
     Glib::ustring wd_ustring(date::format(locale_, "%a", wd));
     auto clen = ustring_clen(wd_ustring);
     auto wd_len = wd_ustring.length();
@@ -278,7 +290,7 @@ auto waybar::modules::Clock::weekdays_header(const date::weekday& first_dow, std
     }
     const std::string pad(2 - clen, ' ');
     res << pad << wd_ustring;
-  } while (++wd != first_dow);
+  } while (++wd != first_week_day);
   res << "\n";
 
   if (config_["format-calendar-weekdays"].isString()) {