Inial implementation for folder opening

_test/SyntaxTest.php

@@ -213,4 +213,24 @@ class plugin_filetools_test extends DokuWikiTest
 
         $this->assertStringContainsString('exampleimage.png', $xhtml);
     }
+
+    /**
+     * This function checks that the open syntax renders an inline button.
+     */
+    public function test_open_button()
+    {
+        $instructions = p_get_instructions('{{open>/tmp/somewhere|Open here}}');
+        $xhtml = p_render('xhtml', $instructions, $info);
+
+        $doc = new Document();
+        $doc->html($xhtml);
+
+        $structure = [
+            'button.filetools-open' => 1,
+        ];
+        $this->structureCheck($doc, $structure);
+
+        $this->assertStringContainsString('Open here', $xhtml);
+        $this->assertStringContainsString('data-path="/tmp/somewhere"', $xhtml);
+    }
 }

script.js

@@ -0,0 +1,58 @@
+/* global window, document */
+
+(function () {
+  'use strict';
+
+  function normalizeToFileUrl(path) {
+    if (!path) return '';
+
+    // already a file URL
+    if (/^file:\/\//i.test(path)) return path;
+
+    // UNC path: \\server\share\path
+    if (/^\\\\/.test(path)) {
+      var p = path.replace(/^\\\\/, '');
+      p = p.replace(/\\/g, '/');
+      return 'file://///' + p;
+    }
+
+    // Windows drive: C:\path\to\file
+    if (/^[a-zA-Z]:\\/.test(path)) {
+      var drive = path[0].toUpperCase();
+      var rest = path.slice(2).replace(/\\/g, '/');
+      return 'file:///' + drive + ':' + rest;
+    }
+
+    // POSIX absolute: /home/user/file
+    if (path[0] === '/') {
+      return 'file://' + path;
+    }
+
+    // Fall back to using the provided string.
+    return path;
+  }
+
+  function onClick(event) {
+    var el = event.target;
+    if (!el || !el.classList || !el.classList.contains('filetools-open')) return;
+
+    var raw = el.getAttribute('data-path') || '';
+    var url = normalizeToFileUrl(raw);
+    console.log('Opening file URL:', url);
+    if (!url) return;
+
+    // Best-effort: browsers may block file:// navigation depending on settings.
+    try {
+      window.open(url, '_blank', 'noopener');
+    } catch (e) {
+      console.error('Failed to open file URL in new tab:', e);
+      try {
+        window.location.href = url;
+      } catch (e2) {
+        console.error('Failed to open file URL:', e2);
+      }
+    }
+  }
+
+  document.addEventListener('click', onClick, false);
+})();

syntax/open.php

@@ -0,0 +1,79 @@
+<?php
+
+use dokuwiki\Extension\SyntaxPlugin;
+
+/**
+ * File Tools Plugin: Open local path syntax.
+ *
+ * Renders an inline button. Clicking it triggers client-side JS that attempts
+ * to open the configured path in the default file manager (best-effort).
+ */
+class syntax_plugin_filetools_open extends SyntaxPlugin
+{
+    /** @inheritdoc */
+    public function getType()
+    {
+        return 'substition';
+    }
+
+    /** @inheritdoc */
+    public function getPType()
+    {
+        // inline
+        return 'normal';
+    }
+
+    /** @inheritdoc */
+    public function getSort()
+    {
+        return 222;
+    }
+
+    /** @inheritdoc */
+    public function connectTo($mode)
+    {
+        $this->Lexer->addSpecialPattern('\{\{open>.+?\}\}', $mode, 'plugin_filetools_open');
+    }
+
+    /** @inheritdoc */
+    public function handle($match, $state, $pos, Doku_Handler $handler)
+    {
+        $match = substr($match, strlen('{{open>'), -2);
+        [$path, $caption] = array_pad(explode('|', $match, 2), 2, '');
+
+        $path = trim($path);
+        $caption = trim($caption);
+        if ($caption === '') $caption = $path !== '' ? $path : 'Open';
+
+        // Basic scheme filtering to avoid javascript: style injections.
+        // Allow either file:// URLs, or plain paths (Windows/UNC/Linux style).
+        if (preg_match('/^[a-zA-Z][a-zA-Z0-9+.-]*:/', $path)) {
+            if (!str_starts_with(strtolower($path), 'file://')) {
+                return false;
+            }
+        }
+
+        return [$path, $caption];
+    }
+
+    /** @inheritdoc */
+    public function render($format, Doku_Renderer $renderer, $data)
+    {
+        if ($data === false) return false;
+        [$path, $caption] = $data;
+
+        if ($format !== 'xhtml') {
+            // no meaningful representation in non-browser formats
+            $renderer->cdata($caption);
+            return true;
+        }
+
+        if ($path === '') {
+            $renderer->cdata('[n/a]');
+            return true;
+        }
+
+        $renderer->doc .= '<button type="button" class="filetools-open" data-path="' . hsc($path) . '">' . hsc($caption) . '</button>';
+        return true;
+    }
+}