blf_userscript_datefix

// ==UserScript==
// @name     Blockland Forums 'Today' and 'Yesterday' dates
// @version  1
// @author   Clay Hanson [15144]
// @grant    none
// @match https://forum.blockland.us/*
// ==/UserScript==

function parseDates() {
 	var content = document.getElementById("content_section");
  if(content == undefined) return;

 	var text    = content.innerHTML;
  var curTime = new Date();
  var months  = ["Janurary", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
  var regexes = [
    /(Janurary|February|March|April|May|June|July|August|September|October|November|December) ([0-9][0-9]), (20[0-9][0-9]), ([0-9][0-9]\:[0-9][0-9]\:[0-9][0-9])/,
    /* Month index */ 0, /*  Day index  */ 1, /* Year index */ 2, /* Time index */ 3
  ];

  while(true) {
    var month;
    var year;
    var day;
    var time;
    var done = 0;
    for(var i=0;i<=regexes.length;i+=5) {
      if(i == regexes.length) { done = 1; break; } // Couldn't find any dates to convert!

			var regie = regexes[i];
      var moIdx = regexes[i + 1];
      var daIdx = regexes[i + 2];
      var yrIdx = regexes[i + 3];
      var tmIdx = regexes[i + 4];
      var match = text.match(regie);

      if(match == null || match.length == 0) { continue; }

      month = match[moIdx + 1];
      year  = match[yrIdx + 1];
      day   = parseInt(match[daIdx + 1]);
      time  = match[tmIdx + 1];

      break;
    }

    if(done) break;

    var str = month + "{{{on}}} " + day + ", " + year + ", ";

    if(curTime.getFullYear() == year && curTime.getMonth() == months.indexOf(month) && curTime.getDate() == day)     { str = "<b>Today</b> at "; }
    else if(curTime.getFullYear() == year && curTime.getMonth() == months.indexOf(month) && curTime.getDate() == day + 1) { str = "<b>Yesterday</b> at "; }

   	text = text.substring(0, text.indexOf(match[0])) + str + time + text.substring(text.indexOf(match[0]) + match[0].length, text.length);
  }

  text = text.replace(/{{{on}}}/g, "");

  content.innerHTML = text;
}

parseDates();