feat(macros): add XsltSidebar for XSLT pages (#9021)

Co-authored-by: Claas Augner <[email protected]>

Author: bsmth

Diff for: kumascript/macros/XsltSidebar.ejs

@@ -0,0 +1,41 @@
+<%
+async function renderRootItem(slug) {
+  const [link, title] = await getPageLinkAndTitle(slug);
+  return `<li><a href="${link}"><strong>${title}</strong></a></li>`
+}
+
+async function getPageLinkAndTitle(slug) {
+  let link = `/${env.locale}${slug}`;
+  let page = await wiki.getPage(link);
+  if (!page.title && env.locale !== 'en-US') {
+    link = `/en-US${slug}`;
+    page = await wiki.getPage(link);
+  }
+  let title = page.short_title || page.title;
+  title = mdn.htmlEscape(title);
+  return [link, title];
+}
+
+%>
+
+<section id="Quick_links" data-macro="XsltSidebar">
+  <ol>
+    <%- await renderRootItem("/docs/Web/XSLT") %>
+    <%- await template("ListSubpagesForSidebar", ['/docs/Web/XSLT/Transforming_XML_with_XSLT', 1]) %>
+  </ol>
+  <ol>
+    <%- await renderRootItem("/docs/Web/XSLT/Element") %>
+    <%- await template("ListSubpagesForSidebar", ['/docs/Web/XSLT/Element', 1]) %>
+  </ol>
+  <ol>
+    <%- await renderRootItem("/docs/Web/EXSLT") %>
+    <%- await template("ListSubpagesForSidebar", ['/docs/Web/EXSLT', 1]) %>
+  </ol>
+  <ol>
+    <%- await renderRootItem("/docs/Web/XPath/Functions") %>
+    <%- await template("ListSubpagesForSidebar", ['/docs/Web/XPath/Functions', 1]) %>
+  </ol>
+  <ol>
+    <%- await renderRootItem("/docs/Web/XPath/Axes") %>
+  </ol>
+</section>