SpecialVersion.js – MediaWiki

/*****************************************************************************************
 * JavaScript here will be loaded by MediaWiki:Common.js when viewing "Special:Version".
 *
 *****************************************************************************************/

(function() { // BEGIN WRAPPER
 
/*****************************************************************************************
 * Variables required by all functions below
 */

	// All tables on "Special:Version"
	var tbls = document.getElementsByTagName( "table" );

/*****************************************************************************************
 * Check extension versions and indicate available updates.
 * Maintainer: BIKI User:Fred Gandt
 */

	function checkExtensionVersions() {
		var mwve = tbls[0].getElementsByTagName( "tr" )[1].getElementsByTagName( "td" )[1],
			exts = tbls[2].getElementsByTagName( "em" ),
			mwaddr = "www.mediawiki.org",
			mwcurv = mwve.textContent,
			extso = {};
			fetchData = function( ns, n, fnc ) {
				$.ajax( {
					url: "https://" + mwaddr + "/w/api.php",
					data: {
						action: "query",
						prop: "revisions",
						rvprop: "content",
						titles: ns + n,
						format: "json",
						redirects: ""
					},
					dataType: "jsonp",
					success: function( data ) {
						var pgs = data.query.pages;
						for ( var pg in pgs ) {
							if ( pgs[pg].hasOwnProperty( "revisions" ) ) {
								var ttl = !!data.query.redirects ? data.query.redirects[0].from : pgs[pg].title;
								fnc( pgs[pg].revisions[0]["*"], ttl.replace( / /g, "_" ).replace( ns, "" ).toLowerCase() );
								break;
							}
						}
					}
				} );
			};
		fetchData(
			"Template:",
			"MW_stable_branch_number",
			function( txt, ttl ) {
				var mwlurv = txt.substring( 0, txt.indexOf( "<noinclude>" ) ).trim(),
					mwrnaddr = "Release_notes/" + mwlurv;
				if ( mwlurv > mwcurv ) {
					fetchData(
						"",
						mwrnaddr,
						function( txt, ttl ) {
							var mwcmpt = /={2,}\s*compatibility\s*={2,}([^]+)={2,}\s*[\w]+\s*={2,}/i.exec( txt );
							if ( !!mwcmpt ) {
								mwve.innerHTML = "Current version: " + mwcurv +
								"<br><b><span style='color:#0a0;'>Latest stable version: " + mwlurv + "</span>" +
								"<br>Compatibility <a href='https://" + mwaddr + "/wiki/" + mwrnaddr + "'>release notes for " + mwlurv + "</a>:</b>" +
								"<p style='margin-left:1em;white-space:pre-wrap;'>" + mwcmpt[1].trim() + "</p>";
							}
						}
					);
				}
			}
		);
		for ( var ext in exts ) {
			if ( typeof exts[ext] == "object" ) {
				var ev = exts[ext].getElementsByClassName( "mw-version-ext-version" );
				if ( ev[0] ) {
					var en;
					if ( exts[ext].firstChild.nodeType === Node.ELEMENT_NODE && exts[ext].firstChild.hasAttribute( "href" ) ) {
						en = exts[ext].firstChild.getAttribute( "href" );
						if ( en.indexOf( mwaddr ) > 0 ) {
							en = en.substring( en.indexOf( "Extension:" ) + 10 );
						} else {
							en = exts[ext].firstChild.textContent.trim();
						}
					} else {
						en = exts[ext].firstChild.textContent.trim();
					}
					extso[en.toLowerCase().replace( / /g, "_" )] = [
						exts[ext],
						ev[0].textContent.replace( /[^\d\. ]/g, "" ).trim()
					];
					fetchData(
						"Extension:",
						en,
						function( txt, ttl ) {
							var curv = extso[ttl][1],
								stts = /\|\s*status\s*=\s*(.+)\s*\|/i.exec( txt ),
								lurv = /\|\s*version\s*=\s*(.+)\s*\|/i.exec( txt ),
								bndl = [];
							if ( !!stts && !!lurv ) {
								stts = stts[1].toLowerCase();
								lurv = lurv[1].replace( /<.*>/g, "" ).trim();
								bndl = /\|.*(?=\bbundled\b).*(?=\bmediawiki\b).*(?=\s([\d\.]+)).*/i.exec( txt );
							} else {
								bndl = /\s*\{\{\s*archived(?: |_)extension\s*\|\s*\d+\s*\|\s*reason\s*=.*(?=\bmerged\b).*(?=\bcore\b).*(?=\bmediawiki\b).*(?=\bversion\s*([\d\.]+)).*/i.exec( txt );
							}
							if ( !!bndl ) {
								stts = "bundled since";
								lurv = bndl[1].replace(/[^\d]*$/g, "");
								curv = mwcurv;
							}
							if ( lurv != curv ) { // todo: latest version is greater than current version
								extso[ttl][0].innerHTML += "<br><span style='color:" + (
								stts === "unmaintained" ? "#aaa;" :
									stts === "archive" ? "#aaa;" :
										stts === "milestone" ? "#aaa;" :
											stts === "unstable" ? "#f00;" :
												stts === "experimental" ? "#f00;" :
													stts === "beta" ? "#d80;" :
														stts === "stable" ? "#0a0;" :
															stts === "magic" ? "#aaa;" :
																stts === "bundled since" ? "#0a0;font-weight:bold;" :
																	"#f00;"
								) + "'>" + stts.charAt( 0 ).toUpperCase() + stts.slice( 1 ) + ": " + lurv + "</span>";
							}
						}
					);
				}
			}
		}
	}
	function initCheckExtensionVersions() {
		var btn = document.createElement( "button" );
		btn.setAttribute( "style", "vertical-align: -6px;" );
		btn.innerHTML = "Check Versions";
		btn.addEventListener( "click", checkExtensionVersions, false );
		tbls[0].setAttribute( "style", "display: inline-table;" );
		tbls[0].parentElement.insertBefore( btn, tbls[0].nextSibling );
	}
 
/*****************************************************************************************/
 
/*****************************************************************************************
 * Next ***
 */

	// code code code

/*****************************************************************************************/
 
/*****************************************************************************************
 * Call the functions above
 */

	if ( mw.config.get( "wgUserGroups" ).indexOf( "sysop" ) >= 0 ) {
		initCheckExtensionVersions();
	}

}()); // END WRAPPER