Add a auto-generated sitemap.xml

docs/_layouts/default.html

@@ -41,8 +41,11 @@ <h2 class="project-tagline">{{ page.description | default: site.description | de
             <a href="https://pages-themes.github.io/cayman/">Cayman theme</a>,
             using
             <a href="https://github.com/allejo/jekyll-toc">allejo/jekyll-toc</a> and
+            <br>
             snippets from
-            <a href="https://www.bram.us/2020/01/10/smooth-scrolling-sticky-scrollspy-navigation/">Bram.us</a></span>
+            <a href="https://www.bram.us/2020/01/10/smooth-scrolling-sticky-scrollspy-navigation/">Bram.us</a>
+            as well as
+            <a href="https://github.com/davidensinger/davidensinger.github.io">David Ensinger</a></span>
             ❤️
           </span>
         </footer>

docs/sitemap.xml

@@ -0,0 +1,59 @@
+---
+layout: null
+sitemap:
+  exclude: 'yes'
+permalink: /sitemap.xml
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  {% for post in site.posts %}
+    {% assign file_ext = post.url | split: '.' | last  %}
+    {% if post.published != false and file_ext != 'css' %}
+    <url>
+      <loc>{{ site.url }}{{ post.url }}</loc>
+      {% if post.sitemap.lastmod %}
+        <lastmod>{{ post.sitemap.lastmod | date: "%Y-%m-%d" }}</lastmod>
+      {% elsif post.date %}
+        <lastmod>{{ post.date | date_to_xmlschema }}</lastmod>
+      {% else %}
+        <lastmod>{{ site.time | date_to_xmlschema }}</lastmod>
+      {% endif %}
+      {% if post.sitemap.changefreq %}
+        <changefreq>{{ post.sitemap.changefreq }}</changefreq>
+      {% else %}
+        <changefreq>monthly</changefreq>
+      {% endif %}
+      {% if post.sitemap.priority %}
+        <priority>{{ post.sitemap.priority }}</priority>
+      {% else %}
+        <priority>0.5</priority>
+      {% endif %}
+    </url>
+    {% endif %}
+  {% endfor %}
+  {% for page in site.pages %}
+    {% assign file_ext = page.url | split: '.' | last  %}
+    {% if page.sitemap.exclude != "yes" and file_ext != 'css' %}
+    <url>
+      <loc>{{ site.url }}{{ page.url | remove: "index.html" }}</loc>
+      {% if page.sitemap.lastmod %}
+        <lastmod>{{ page.sitemap.lastmod | date: "%Y-%m-%d" }}</lastmod>
+      {% elsif page.date %}
+        <lastmod>{{ page.date | date_to_xmlschema }}</lastmod>
+      {% else %}
+        <lastmod>{{ site.time | date_to_xmlschema }}</lastmod>
+      {% endif %}
+      {% if page.sitemap.changefreq %}
+        <changefreq>{{ page.sitemap.changefreq }}</changefreq>
+      {% else %}
+        <changefreq>monthly</changefreq>
+      {% endif %}
+      {% if page.sitemap.priority %}
+        <priority>{{ page.sitemap.priority }}</priority>
+      {% else %}
+        <priority>0.3</priority>
+      {% endif %}
+    </url>
+    {% endif %}
+  {% endfor %}
+</urlset>