2016 Update

Task/Discordian-date/JavaScript/discordian-date-1.js

@@ -1,49 +1,72 @@
 /**
  * All Hail Discordia! - this script prints Discordian date using system date.
- * author: s1w_, lang: JavaScript
+ * author: jklu, lang: JavaScript
  */
-function print_ddate(mod) {
-  var p;
-  switch(mod || 0) {// <--choose display pattern or pass option by parameter
-   default:
-    case 0:/* Sweetmorn, Day 57 of the Season of Confusion, Anno Mung 3177 */ p="{0}, [Day {1} of the Season of {2}], Anno Mung {3}"; break;
-    case 1:/* Sweetmorn, The 57th Day of Confusion, 3177 YOLD              */ p="{0}, [The {1}th Day of {2}], {3} YOLD";              break;
-    case 2:/* Sweetmorn, the 57th day of Confusion, AM 3177                */ p="{0}, [the {1}th day of {2}], AM {3}";                break;
-    case 3:/* Sweetmorn / Confusion 57th / AM 3177                         */ p="{0} / [{2} {1}th] / AM {3}";                         break;
-  }
-  var ddateStr, curr, sum, extra, today, day, month, year, dSeason, dDay, season, ddate, dyear;
+var seasons = ["Chaos", "Discord", "Confusion",
+  "Bureaucracy", "The Aftermath"];
+var weekday = ["Sweetmorn", "Boomtime", "Pungenday",
+  "Prickle-Prickle", "Setting Orange"];
 
-  format = function(s, $1, $2, $3, $4) {
-    if ($2 != undefined) {
-      var postfix;
-      switch(parseInt($2.charAt($2.length-1))) {
-        case 1: postfix = '}st'; break;
-        case 2: postfix = '}nd'; break;
-        case 3: postfix = '}rd'; break;
-        default:postfix = '}th';
-      }
-      return p.replace(/\}th/, postfix).replace(/(\[|\])/g, '').format($1, $2, $3, $4);
-    }
-    else return p.replace(/\[.*?\]/,"<span style='color:green'>{2}</span>").format($1, $2, $3, $4);
-  }
+var apostle = ["Mungday", "Mojoday", "Syaday",
+  "Zaraday", "Maladay"];
 
-  String.prototype.format = function() {
-    var pattern = /\{\d+\}/g;
-    var args = arguments;
-    return this.replace(pattern, function(capture){ return args[capture.match(/\d+/)]; });
-  }
+var holiday = ["Chaoflux", "Discoflux", "Confuflux",
+  "Bureflux", "Afflux"];
 
-  dDay = new Array("Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange");
-  dSeason = new Array("Chaos", "Discord", "Confusion", "Bureaucracy", "Aftermath");
-  curr = new Date(); extra = new Array(0,3,0,3,2,3,2,3,3,2,3,2);
-  today = curr.getDate(); month = curr.getMonth(); year = curr.getFullYear();
-  sum = month * 28;
-  for(var i=0; i<=month; i++)
-    sum += extra[i];
-  sum += today;
-  day = (sum - 1) % 5; ddate = sum % 73;
-  season = (month==1)&&(today==29) ? "St. Tib\'s Day" : dSeason[Math.floor(sum/73)];
-  dyear = year+1166;
-  ddateStr = ""+dDay[day]+ddate+season+dyear;
-  document.write(ddateStr.replace(/(\D+)(?:(\d+)(?!St)|(?:\d+))(\D+)(\d+)/i, format));
+
+Date.prototype.isLeapYear = function() {
+  var year = this.getFullYear();
+  if ((year & 3) !== 0) return false;
+  return ((year % 100) !== 0 || (year % 400) === 0);
+};
+
+// Get Day of Year
+Date.prototype.getDOY = function() {
+  var dayCount = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
+  var mn = this.getMonth();
+  var dn = this.getDate();
+  var dayOfYear = dayCount[mn] + dn;
+  if (mn > 1 && this.isLeapYear()) dayOfYear++;
+  return dayOfYear;
+};
+
+function discordianDate(date) {
+  var y = date.getFullYear();
+  var yold = y + 1166;
+  var dayOfYear = date.getDOY();
+
+  if (date.isLeapYear()) {
+    if (dayOfYear == 60)
+      return "St. Tib's Day, in the YOLD " + yold;
+    else if (dayOfYear > 60)
+      dayOfYear--;
+  }
+  dayOfYear--;
+
+  var divDay= Math.floor(dayOfYear/73);
+
+  var seasonDay = (dayOfYear % 73) + 1;
+  if (seasonDay == 5)
+    return apostle[divDay] + ", in the YOLD " + yold;
+  if (seasonDay == 50)
+    return holiday[divDay] + ", in the YOLD " + yold;
+
+  var season = seasons[divDay];
+  var dayOfWeek = weekday[dayOfYear % 5];
+
+  return dayOfWeek + ", day " + seasonDay + " of " +
+    season + " in the YOLD " + yold;
 }
+
+function test(y, m, d, result) {
+  console.assert((discordianDate(new Date(y, m, d)) == result), result);
+}
+
+console.log(discordianDate(new Date(Date.now())));
+test(2010, 6, 22, "Pungenday, day 57 of Confusion in the YOLD 3176");
+test(2012, 1, 28, "Prickle-Prickle, day 59 of Chaos in the YOLD 3178");
+test(2012, 1, 29, "St. Tib's Day, in the YOLD 3178");
+test(2012, 2, 1, "Setting Orange, day 60 of Chaos in the YOLD 3178");
+test(2010, 0, 5, "Mungday, in the YOLD 3176");
+test(2011, 4, 3, "Discoflux, in the YOLD 3177");
+test(2015, 9, 19, "Boomtime, day 73 of Bureaucracy in the YOLD 3181");

Task/Discordian-date/JavaScript/discordian-date-2.js

@@ -1,8 +1,2 @@
-print_ddate()
-"Sweetmorn, Day 57 of the Season of Confusion, Anno Mung 3177"
-print_ddate(1)
-"Sweetmorn, The 57th Day of Confusion, 3177 YOLD"
-print_ddate(2)
-"Sweetmorn, the 57th day of Confusion, AM 3177"
-print_ddate(3)
-"Sweetmorn / Confusion 57th / AM 3177"
+console.log(discordianDate(new Date(Date.now())));
+"Prickle-Prickle, day 47 of The Aftermath in the YOLD 3181"