User:tfowr Easydiff2.js

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This user script seems to have a documentation page at User:TFOWR/easyDiff2 and an accompanying .css page at User:TFOWR/easyDiff2.css.

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// Schedule it to run after the HTML page is rendered

$(fullUrlLinks);



// Define main function

function fullUrlLinks() {

	importStylesheet("User:TFOWR/easyDiff2.css");



	doDiffs();

	if (mw.config.get('wgNamespaceNumber') === -1) {

		doSpecialLog();

	}

}



function doSpecialLog() {

	var url = document.URL;

	if ('Special:Log' == getTitle(url)) {

		var span = getSpan();

		span.setAttribute('style', 'float: right;');

		var args = new Array('type', 'user', 'page');

		span.innerHTML += '{{fullurl:Special:Log' + getKvPairsString(args, url) + '}}';

		document.getElementById('siteSub').appendChild(span);

	}

}



function doDiffs() {



	if (document.URL.indexOf('diff=') != -1) {

		var prev = document.getElementById('mw-diff-otitle4');

		var current = document.getElementById('mw-diff-ntitle4');

		var prevId = getRevId(document.getElementById('mw-diff-otitle1').firstChild.firstChild.href);

		var currentId = getRevId(document.getElementById('mw-diff-ntitle1').firstChild.firstChild.href);



		// Left : diff2

		if ((prevId != null) && ('prev' != prevId) && ('next' != prevId)) {

			var span = getSpan();

			var br = getBr();

			prev.appendChild(br);

			span.innerHTML += '{{diff2|' + prevId + '|<i>label</i>}}';

			prev.appendChild(span);

		}



		// Right : diff2

		if ((currentId != null) && ('prev' != currentId)

				&& ('next' != currentId)) {

			var span = getSpan();

			var br = getBr();

			current.appendChild(br);

			span.innerHTML += '{{diff2|' + currentId + '|<i>label</i>}}';

			current.appendChild(span);

		}

		// Left-right : diff

		if ((prevId != null) && (prevId != 'prev') && (prevId != 'current')

				&& ((currentId != null) && currentId != 'prev')

				&& (currentId != 'current')) {

			var span = getSpan();

			var br = getBr();

			current.appendChild(br);

			span.innerHTML += '{{diff|1=' + getTitle(document.URL) + '|2='

					+ currentId + '|3=' + prevId + '|4=<i>label</i>}}';

			current.appendChild(span);

		}

	}

}



function getSpan() {

	var rv = document.createElement('span');

	rv.setAttribute('class', 'tfowr-diff');

	return rv;

}



function getBr() {

	return document.createElement('br');

}



function getRevId(href) {

	var rv = getSubstring(href, "oldid=", "&");

	if (rv != null)

		return rv;



	return getSubstring(document.URL, "diff=", "&");

}



function getTitle(url) {

	return unescape(getSubstring(url, "title=", "&"));

}



function getKvPairsString(args, url) {

	var rv = '';

	for ( var i = 0; i < args.length; i++) {

		var key = argsi];

		var value = getSubstring(url, key + "=", "&");

		if (value != null && value != '') {

			if (rv == '') {

				rv += '|';

			} else {

				rv += '&';

			}

			rv += key + '=' + unescape(value);

		}

	}

	return rv;

}



function getSubstring(stringIn, start, end) {

	if (stringIn == null)

		return null;



	if (stringIn.indexOf(start) == -1) {

		return null;

	}



	var startIdx = stringIn.indexOf(start) + start.length;

	var endIdx = stringIn.indexOf(end, startIdx);

	if (endIdx != -1) {

		return stringIn.substring(startIdx, endIdx);

	} else {

		return stringIn.substring(startIdx);

	}

}