New plugin: Use Prism for syntax highlighting

CHANGELOG.md

@@ -5,6 +5,7 @@
 - CSS: Hide menu on mobile
 - CSS: Invert icons in dark mode
 - Plugins: Allow changing CSP by more plugins
+- New plugin: Use Prism for syntax highlighting
 
 ## Adminer 5.1.0 (released 2025-03-24)
 - Display collation at table structure if different from table

plugins/prism.php

@@ -0,0 +1,41 @@
+<?php
+
+/** Use Prism for syntax highlighting, disables highlighting in <textarea>
+* @link https://prismjs.com/
+* @link https://www.adminer.org/plugins/#use
+* @author Jakub Vrana, https://www.vrana.cz/
+* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+* @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
+*/
+class AdminerPrism {
+	private $root;
+	private $minified;
+	private $theme;
+
+	function __construct($root = "https://cdn.jsdelivr.net/npm/prismjs@1", $minified = ".min", $theme = "prism") {
+		$this->root = $root;
+		$this->minified = $minified;
+		$this->theme = $theme;
+	}
+
+	function syntaxHighlighting($tableStatuses) {
+		echo "<style>@import url($this->root/themes/$this->theme$this->minified.css);</style>\n";
+		echo Adminer\script_src("$this->root/prism$this->minified.js");
+		echo Adminer\script_src("$this->root/components/prism-json$this->minified.js");
+		echo Adminer\script_src("$this->root/components/prism-sql$this->minified.js");
+		?>
+<script <?php echo Adminer\nonce(); ?>>
+function changeClass(el) {
+	el.className = el.className
+		.replace(/jush-js/, 'language-json')
+		.replace(/jush-\w*sql/, 'language-sql')
+	;
+	return el;
+}
+qsa('code').forEach(changeClass);
+adminerHighlighter = els => els.forEach(el => Prism.highlightElement(changeClass(el)));
+</script>
+<?php
+		return true;
+	}
+}