Add extension.json, empty PHP entry point

Depends upon I9a736a4c0ff73 in MediaWiki core

Bug: T87893
Change-Id: I860a1da0b49092bfeeea2c8f80b4da57efc913ec

Cite.php

@@ -1,73 +1,14 @@
 <?php
-if ( ! defined( 'MEDIAWIKI' ) )
-	die();
-/**#@+
- * A parser extension that adds two tags, <ref> and <references> for adding
- * citations to pages
- *
- * @file
- * @ingroup Extensions
- *
- * @link http://www.mediawiki.org/wiki/Extension:Cite Documentation
- *
- * @bug 4579
- *
- * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
- * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
- * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
- */
 
-$wgHooks['ParserFirstCallInit'][] = 'Cite::setHooks';
-
-$wgExtensionCredits['parserhook'][] = array(
-	'path' => __FILE__,
-	'name' => 'Cite',
-	'author' => array(
-		'Ævar Arnfjörð Bjarmason',
-		'Andrew Garrett',
-		'Brion Vibber',
-		'Marius Hoch',
-		'Steve Sanbeg'
-	),
-	'descriptionmsg' => 'cite-desc',
-	'license-name' => 'GPL-2.0+',
-	'url' => 'https://www.mediawiki.org/wiki/Extension:Cite'
-);
-
-$wgParserTestFiles[] = __DIR__ . "/citeParserTests.txt";
-$wgMessagesDirs['Cite'] = __DIR__ . '/i18n';
-$wgAutoloadClasses['Cite'] = __DIR__ . "/Cite_body.php";
-
-/**
- * The emergency shut-off switch.  Override in local settings to disable
- * groups; or remove all references from this file to enable unconditionally
- */
-$wgAllowCiteGroups = true;
-
-/**
- * An emergency optimisation measure for caching cite <references /> output.
- */
-$wgCiteCacheReferences = false;
-
-// Resources
-$citeResourceTemplate = array(
-	'localBasePath' => __DIR__ . '/modules',
-	'remoteExtPath' => 'Cite/modules'
-);
-
-$wgResourceModules['ext.cite'] = $citeResourceTemplate + array(
-	'scripts' => 'ext.cite.js',
-	'styles' => 'ext.cite.css',
-	'messages' => array(
-		'cite_references_link_accessibility_label',
-		'cite_references_link_many_accessibility_label',
-	),
-);
-
-/* Add RTL fix for the cite <sup> elements */
-$wgResourceModules['ext.rtlcite'] = $citeResourceTemplate + array(
-	'styles' => 'ext.rtlcite.css',
-	'position' => 'top',
-);
-
-/**#@-*/
+if ( function_exists( 'wfLoadExtension' ) ) {
+	wfLoadExtension( 'Cite' );
+	// Keep i18n globals so mergeMessageFileList.php doesn't break
+	$wgMessagesDirs['Cite'] = __DIR__ . '/i18n';
+	/* wfWarn(
+		'Deprecated PHP entry point used for Cite extension. Please use wfLoadExtension instead, ' .
+		'see https://www.mediawiki.org/wiki/Extension_registration for more details.'
+	); */
+	return true;
+} else {
+	die( 'This version of the Cite extension requires MediaWiki 1.25+' );
+}

extension.json

@@ -0,0 +1,52 @@
+{
+	"name": "Cite",
+	"author": [
+		"Ævar Arnfjörð Bjarmason",
+		"Andrew Garrett",
+		"Brion Vibber",
+		"Marius Hoch",
+		"Steve Sanbeg"
+	],
+	"url": "https://www.mediawiki.org/wiki/Extension:Cite",
+	"descriptionmsg": "cite-desc",
+	"license-name": "GPL-2.0+",
+	"type": "parserhook",
+	"MessagesDirs": {
+		"Cite": [
+			"i18n"
+		]
+	},
+	"Hooks": {
+		"ParserFirstCallInit": [
+			"Cite::setHooks"
+		]
+	},
+	"ResourceModules": {
+		"ext.cite": {
+			"scripts": "ext.cite.js",
+			"styles": "ext.cite.css",
+			"messages": [
+				"cite_references_link_accessibility_label",
+				"cite_references_link_many_accessibility_label"
+			]
+		},
+		"ext.rtlcite": {
+			"styles": "ext.rtlcite.css",
+			"position": "top"
+		}
+	},
+	"ResourceFileModulePaths": {
+		"localBasePath": "modules",
+		"remoteExtPath": "Cite/modules"
+	},
+	"config": {
+		"AllowCiteGroups": true,
+		"CiteCacheReferences": false
+	},
+	"AutoloadClasses": {
+		"Cite": "Cite_body.php"
+	},
+	"ParserTestFiles": [
+		"citeParserTests.txt"
+	]
+}