Function rebuildYear

codebase/sources/dhtmlxscheduler.js:17349–17432

(year, options)

    return wdaymask;
  }();
  function rebuildYear(year, options) {
    var firstyday = datetime(year, 1, 1);
    var yearlen = isLeapYear(year) ? 366 : 365;
    var nextyearlen = isLeapYear(year + 1) ? 366 : 365;
    var yearordinal = toOrdinal(firstyday);
    var yearweekday = getWeekday(firstyday);
    var result = __assign(__assign({ yearlen, nextyearlen, yearordinal, yearweekday }, baseYearMasks(year)), { wnomask: null });
    if (empty(options.byweekno)) {
      return result;
    }
    result.wnomask = repeat(0, yearlen + 7);
    var firstwkst;
    var wyearlen;
    var no1wkst = firstwkst = pymod(7 - yearweekday + options.wkst, 7);
    if (no1wkst >= 4) {
      no1wkst = 0;
      wyearlen = result.yearlen + pymod(yearweekday - options.wkst, 7);
    } else {
      wyearlen = yearlen - no1wkst;
    }
    var div = Math.floor(wyearlen / 7);
    var mod = pymod(wyearlen, 7);
    var numweeks = Math.floor(div + mod / 4);
    for (var j = 0; j < options.byweekno.length; j++) {
      var n = options.byweekno[j];
      if (n < 0) {
        n += numweeks + 1;
      }
      if (!(n > 0 && n <= numweeks)) {
        continue;
      }
      var i = void 0;
      if (n > 1) {
        i = no1wkst + (n - 1) * 7;
        if (no1wkst !== firstwkst) {
          i -= 7 - firstwkst;
        }
      } else {
        i = no1wkst;
      }
      for (var k = 0; k < 7; k++) {
        result.wnomask[i] = 1;
        i++;
        if (result.wdaymask[i] === options.wkst)
          break;
      }
    }
    if (includes(options.byweekno, 1)) {
      var i = no1wkst + numweeks * 7;
      if (no1wkst !== firstwkst)
        i -= 7 - firstwkst;
      if (i < yearlen) {
        for (var j = 0; j < 7; j++) {
          result.wnomask[i] = 1;
          i += 1;
          if (result.wdaymask[i] === options.wkst)
            break;
        }