From 46a390d6759065271b2158537691a53679c58989 Mon Sep 17 00:00:00 2001
From: Martin Fischer <martin@push-f.com>
Date: Sat, 3 Dec 2022 07:07:55 +0100
Subject: allow code display to be customized via Scribunto

---
 Code.php | 41 ++++++++++++++++++++++++++++++-----------
 1 file changed, 30 insertions(+), 11 deletions(-)

(limited to 'Code.php')

diff --git a/Code.php b/Code.php
index 0243e6f..045448e 100644
--- a/Code.php
+++ b/Code.php
@@ -4,10 +4,12 @@ namespace MediaWiki\Extension\Code;
 use Content;
 use ErrorPageError;
 use ExtensionRegistry;
+use FatalError;
 use Html;
 use MediaWiki\Content\Renderer\ContentParseParams;
 use MediaWiki\MediaWikiServices;
 use Parser;
+use ParserOptions;
 use ParserOutput;
 use Sanitizer;
 use SpecialPage;
@@ -70,15 +72,6 @@ function renderCode( string $code, $lang, $outputPage, ?array $tagAttrs = null )
 		$codeBlock = pre( $code, $tagAttrs );
 	}
 
-	foreach ( $lang['linkifiers'] as $regex => $href ) {
-		$codeBlock = preg_replace_callback( $regex, fn( $match ) =>
-			Xml::element( 'a', [
-				'href' => str_replace( '$1', $match[0], $href ),
-				'tabindex' => -1
-			], $match[0] ),
-		 $codeBlock );
-	}
-
 	$actions = '';
 
 	foreach ( $lang['actions'] as $action => $url ) {
@@ -96,7 +89,34 @@ function renderCode( string $code, $lang, $outputPage, ?array $tagAttrs = null )
 		$actions .= Xml::closeElement( 'a' ) . ' ';
 	}
 
-	return $codeBlock . $actions;
+	$additionalOutput = '';
+
+	$scribuntoModule = $lang['scribuntoModule'] ?? null;
+	if ( $scribuntoModule && ExtensionRegistry::getInstance()->isLoaded( 'Scribunto' ) ) {
+		$callFunction = static function ( Parser $parser, string $function, array $extraArgs = [] ) use ( $scribuntoModule, $code, $lang, $tagAttrs ) {
+			$args = [ $scribuntoModule, $function, $code, $lang['tag'], $tagAttrs == null ];
+			$args = array_merge( $args, $extraArgs );
+			if ( $tagAttrs ) {
+				$args = array_merge( $args, $tagAttrs );
+			}
+			$frame = $parser->getPreprocessor()->newFrame();
+			$res = $parser->callParserFunction( $frame, '#invoke', $args );
+			if ( !$res['found'] ) {
+				throw new FatalError( "unexpected condition in Code extension: the Scribunto module is loaded but the #invoke parser function wasn't found" );
+			}
+			return Sanitizer::removeSomeTags( $res['text'], [ 'extraTags' => [ 'a' ], 'extra' ] );
+		};
+		if ( $tagAttrs ) {
+			$parser = MediaWikiServices::getInstance()->getParser();
+		} else {
+			$parser = MediaWikiServices::getInstance()->getParserFactory()->create();
+			$parser->startExternalParse( null, ParserOptions::newFromAnon(), Parser::OT_HTML );
+		}
+		$codeBlock = $callFunction( $parser, 'formatCode', [ $codeBlock ] );
+		$additionalOutput = $callFunction( $parser, 'additionalOutput' );
+	}
+
+	return $codeBlock . $actions . $additionalOutput;
 }
 
 class ContentHandler extends TextContentHandler {
@@ -118,7 +138,6 @@ class ContentHandler extends TextContentHandler {
 			$lang = [
 				'pygmentsLexer' => 'text',
 				'actions' => [],
-				'linkifiers' => [],
 			];
 		}
 		$out .= renderCode( $content->getText(), $lang, $output );
-- 
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