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js/include.js

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+/**
+ * @file Inserts the contents of remote files into the document.
+ *
+ * @licstart The following is the entire license notice for the JavaScript code
+ * in this page.
+ *
+ * Copyright (C) 2026 Madison L.
+ *
+ * The JavaScript code in this page is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU General Public License (GNU GPL)
+ * as published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version. The code is distributed
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
+ *
+ * As additional permission under GNU GPL version 3 section 7, you may
+ * distribute non-source (e.g., minimized or compacted) forms of that code
+ * without the copy of the GNU GPL normally required by section 4, provided you
+ * include this license notice and a URL through which recipients can access the
+ * Corresponding Source.
+ *
+ * @licend The above is the entire license notice for the JavaScript code in
+ * this page.
+ *
+ * @warning This script should only execute AFTER the document has been parsed.
+ * Otherwise, some directives may not be processed. To avoid this, import this
+ * script with the 'defer' attribute.
+ */
+
+async function processDirectives() {
+    for (var element of document.getElementsByTagName("*")) {
+        var path = element.getAttribute("include");
+        if (!path)
+            continue;
+        await fetch(path)
+            .then(response => {
+                if (!response.ok)
+                    throw new Error(`Fetching '${path}' failed`);
+                return response.text();
+            }).then(contents => {
+                element.innerHTML = contents;
+            }).catch(error => {
+                console.error(error);
+                element.innerHTML = `<p style="color: red;">${error}</p>`;
+            });
+    }
+}
+
+processDirectives();