Compatibility fix for Nikki’s Paste-a-Date!* for better script interaction (innerHTML → standard DOM methods) (*) http://userscripts.org/scripts/show/121217

96465.user.js

// ==UserScript==
// @name		MusicBrainz: Paste-A-Date!
// @description		This script adds a field after the existing date fields where you can paste a (numeric) date and it will try to parse it.
// @version		2012-01-05 modified by j99, please compare and check, it's ok for me now
// @author		-
// @namespace		df069240-fe79-11dc-95ff-0800200c9a66
//
// @include		http://*musicbrainz.org/*
// ==/UserScript==
//**************************************************************************//

/* Javascript sucks! */
function unique(arr) {
	var r = new Array();
	o:for(var i = 0, n = arr.length; i < n; i++) {
		for(var x = 0, y = r.length; x < y; x++) {
			if(r[x]==arr[i])
				continue o;
		}
		r[r.length] = arr[i];
	}
	return r;
}
/* End of workaround because Javascript sucks! */

function nikkis_messy_date_extractor (str) {
	var ymd = /^\W*((?:[0-9]{2})?[0-9]{2})(?:(?:\W+|年|년\W?)(0?[1-9]|1[0-2])(?:(?:\W+|月|월\W?)(0?[1-9]|[12][0-9]|3[01])(?:日|일)?)?)?\W*$/;
	var dmy = /^\W*(?:(0?[1-9]|[12][0-9]|3[01])\W+)?(0?[1-9]|1[0-2])\W+((?:[0-9]{2})?[0-9]{2})\W*$/;
	var mdy = /^\W*(0?[1-9]|1[0-2])\W+(0?[1-9]|[12][0-9]|3[01])\W+((?:1[89]|20)?[0-9]{2})\W*$/;
	var dmy_text = /^\W*(?:(0?[1-9]|[12][0-9]|3[01])\W+)?([\w ]+)\W+((?:[0-9]{2})?[0-9]{2})\W*$/;
	var ymd_text = /^\W*((?:[0-9]{2})?[0-9]{2})\W+([\w ]+)(?:\W+(0?[1-9]|[12][0-9]|3[01]))?\W*$/;
	var mdy_text = /^\W*([\w+]+)\W+(0?[1-9]|[12][0-9]|3[01])\W+((?:[0-9]{2})?[0-9]{2})\W*$/;

	var dates = Array();

	if (ymd.test(str)) {
		var matches = ymd.exec(str);
		var newdate = clean_date(matches[1], matches[2], matches[3]);
		if (newdate) dates.push(newdate);
	}
	if (dmy.test(str)) {
		var matches = dmy.exec(str);
		if (matches[3] > 2484) matches[3] = matches[3] - 543; // Thai years
		var newdate = clean_date(matches[3], matches[2], matches[1]);
		if (newdate) dates.push(newdate);

	}
	if (mdy.test(str)) {
		var matches = mdy.exec(str);
		var newdate = clean_date(matches[3], matches[1], matches[2])
		if (newdate) dates.push(newdate);
	}
	if (dmy_text.test(str)) {
		var matches = dmy_text.exec(str);
		var month = get_month(matches[2]);
		var newdate = clean_date(matches[3], month, matches[1]);
		if (newdate) dates.push(newdate);

	}
	if (ymd_text.test(str)) {
		var matches = ymd_text.exec(str);
		var month = get_month(matches[2]);
		var newdate = clean_date(matches[1], month, matches[3]);
		if (newdate) dates.push(newdate);

	}
	if (mdy_text.test(str)) {
		var matches = mdy_text.exec(str);
		var month = get_month(matches[1]);
		var newdate = clean_date(matches[3], month, matches[2]);
		if (newdate) dates.push(newdate);

	}

	return dates;
}

function clean_date(y, m, d) {
	if (y.length == 2) y = (y > 20) ? "19"+y : "20"+y;
	if (m && m.length == 1) m = "0"+m;
	if (d && d.length == 1) d = "0"+d;

	if (d == 29 && m == 2 && y%4 != 0 && y%400 != 0) return false;
	if (d == 30 && m == 2) return false;
	if (d == 31 && (m == 2 || m == 4 || m == 6 || m == 9 || m == 11)) return false;

	var newdate = [ y ];
	if (m) newdate.push(m);
	if (d) newdate.push(d);
	
	return newdate.join("-");
}

function get_date(id) {
	var div = document.getElementById("display"+id);
	var str = document.getElementById(id).value;
	var dates = unique(nikkis_messy_date_extractor(str).sort());

	if (str.length < 1) {
		div.style.borderColor = 'white';
		div.style.backgroundColor = 'white';
		div.innerHTML = "";
		div.style.display = 'inline';
	} else if (dates.length == 1) {
		set_date(id, dates[0].split('-')[0], dates[0].split('-')[1], dates[0].split('-')[2]);
 
		div.style.borderColor = 'green';
		div.style.backgroundColor = '#CDFFBD';
		div.innerHTML = "✓";
		div.style.display = 'inline';
	} else if (dates.length > 1) {
		div.style.borderColor = 'yellow';
		div.style.backgroundColor = '#FFEEBD';
		div.style.display = 'block';
		div.innerHTML = "multiple possibilities:";
		for (var j = 0; j < dates.length; j++) {
			div.appendChild( document.createElement("br"));
			var a = document.createElement("a");
			a.innerHTML = dates[j];
			a.style.cursor = "pointer";
			a.addEventListener("click", (function(i,j,k,l) { return function(){ set_date(i,j,k,l); }})(id, dates[j].split('-')[0], dates[j].split('-')[1], dates[j].split('-')[2]), false);
			div.appendChild(a, div);
		}
	} else {
		div.style.borderColor = 'red';
		div.style.backgroundColor = '#FFBDCD';
		div.innerHTML = "✗";
		div.style.display = 'inline';
	}
}

function set_date(id, year, month, day) {
	var e = document.getElementById(id).parentNode.getElementsByTagName("input");
	e[0].value = year ? year : "";
	e[1].value = month ? month : "";
	e[2].value = day ? day : "";
}

function get_month (str) {
	var months = Array();

	months["january"] = "1";
	months["jan"] = "1";
	months["janv"] = "1";
	months["januari"] = "1";
	months["janeiro"] = "1";
	months["januar"] = "1";
	months["janvier"] = "1";

	months["february"] = "2";
	months["feb"] = "2";
	months["févr"] = "2";
	months["februari"] = "2";
	months["fevereiro"] = "2";
	months["februar"] = "2";
	months["février"] = "2";

	months["march"] = "3";
	months["mar"] = "3";
	months["mars"] = "3";
	months["março"] = "3";
	months["märz"] = "3";
	months["mars"] = "3";

	months["april"] = "4";
	months["apr"] = "4";
	months["avr"] = "4";
	months["abril"] = "4";
	months["avril"] = "4";

	months["may"] = "5";
	months["mai"] = "5";
	months["maj"] = "5";
	months["maio"] = "5";
	months["mai"] = "5";

	months["june"] = "6";
	months["jun"] = "6";
	months["juin"] = "6";
	months["juni"] = "6";
	months["junho"] = "6";
	months["juin"] = "6";

	months["july"] = "7";
	months["jul"] = "7";
	months["juil"] = "7";
	months["juli"] = "7";
	months["julho"] = "7";
	months["juillet"] = "7";

	months["august"] = "8";
	months["aug"] = "8";
	months["augusti"] = "8";
	months["agosto"] = "8";
	months["août"] = "8";

	months["september"] = "9";
	months["sep"] = "9";
	months["sept"] = "9";
	months["setembro"] = "9";
	months["septembre"] = "9";

	months["october"] = "10";
	months["oct"] = "10";
	months["oktober"] = "10";
	months["outubro"] = "10";
	months["octobre"] = "10";

	months["november"] = "11";
	months["nov"] = "11";
	months["novembro"] = "11";
	months["novembre"] = "11";

	months["december"] = "12";
	months["dec"] = "12";
	months["déc"] = "12";
	months["dezembro"] = "12";
	months["dezember"] = "12";
	months["décembre"] = "12";

	months["enero"] = "1";
	months["febrero"] = "2";
	months["marzo"] = "3";
	months["mayo"] = "4";
	months["junio"] = "6";
	months["julio"] = "7";
	months["septiembre,"] = "9";
	months["octubre"] = "10";
	months["noviembre"] = "11";
	months["diciembre"] = "12";

	// roman numerals
	months["i"] = "1";
	months["ii"] = "2";
	months["iii"] = "3";
	months["iv"] = "4";
	months["v"] = "5";
	months["vi"] = "6";
	months["vii"] = "7";
	months["viii"] = "8";
	months["ix"] = "9";
	months["x"] = "10";
	months["xi"] = "11";
	months["xii"] = "12";
	months["Ⅰ"] = "1";
	months["Ⅱ"] = "2";
	months["Ⅲ"] = "3";
	months["Ⅳ"] = "4";
	months["Ⅴ"] = "5";
	months["Ⅵ"] = "6";
	months["Ⅵ"] = "7";
	months["Ⅷ"] = "8";
	months["Ⅸ"] = "9";
	months["Ⅹ"] = "10";
	months["Ⅺ"] = "11";
	months["Ⅻ"] = "12";

	if (months[str.toLowerCase()])
		return months[str.toLowerCase()];
	return str;
}


var e = document.getElementsByClassName('partial-date');
for (var i = 0; i < e.length; i++) {
	if (!document.location.pathname.match(/^\/release\//))
		e[i].style.display = "block";
//	e[i].innerHTML += ' <input type="text" id="dateinput'+i+'" size="12" /><div id="displaydateinput'+i+'" style="border:1px solid white"></div>';
	var it = e[i].appendChild(document.createElement("input"));
	it.setAttribute("type", "text");
	it.setAttribute("size", "12");
	it.setAttribute("id", "dateinput"+i);
	it.style.marginLeft = "4px";
	var div = e[i].appendChild(document.createElement("div"));
	div.setAttribute("id", "displaydateinput"+i);
	div.style.border = "1px solid white";

	document.getElementById('dateinput'+i).addEventListener("input", (function(i){ return function(){ get_date('dateinput'+i); }})(i), false);
}

/* workaround for weird placeholder text in release editor */
var idy = document.getElementById('id-date.year');
var idm = document.getElementById('id-date.month');
var idd = document.getElementById('id-date.day');
if (idy && idm && idd) {
	var iyear = document.createElement("input");
	iyear.id="id-date.year";
	iyear.name="date.year";
	iyear.size="4";
	iyear.maxlength="4";
	iyear.value=idy.value;
	idy.parentNode.replaceChild(iyear, idy);

	var imonth = document.createElement("input");
	imonth.id="id-date.month";
	imonth.name="date.month";
	imonth.size="2";
	imonth.maxlength="2";
	imonth.value=idm.value;
	idm.parentNode.replaceChild(imonth, idm);

	var iday = document.createElement("input");
	iday.id="id-date.day";
	iday.name="date.day";
	iday.size="2";
	iday.maxlength="2";
	iday.value=idd.value;
	idd.parentNode.replaceChild(iday, idd);
}
/* end workaround for weird behaviour of placeholder text in release editor */

function removeChildren(p) {
	while (p && p.hasChildNodes()) { p.removeChild(p.firstChild); }
}