Jekyll sitemap without plugins

There are plenty of Jekyll plugins available if you want to generate a sitemap for your blog. The only problem is that GitHub Pages, where a lot of us are hosting our Jekyll sites, does not allow plugins.

Thankfully, Jekyll is quite versatile and I was able to create a sitemap without using Jekyll plugins. In the undocumented :pages accessor you can find all non-post pages in your site and iterating over it gives you all the data you need to build a sitemap.

Just remember to exclude things like CSS files (detectable by missing layout) and your feeds (layout is feed in my case).

---
---
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    {{ "{% for post in site.posts " }}%}
    <url>
        <loc>http://foo.com{{ "{{ post.url | remove: 'index.html' " }}}}</loc>
    </url>
    {{ "{% endfor " }}%}

    {{ "{% for page in site.pages " }}%}
    {{ "{% if page.layout != nil "}}%}
    {{ "{% if page.layout != 'feed' "}}%}
    <url>
        <loc>http://foo.com{{ "{{ page.url | remove: 'index.html' " }}}}</loc>
    </url>
    {{ "{% endif " }}%}
    {{ "{% endif " }}%}
    {{ "{% endfor " }}%}
</urlset>

Obviously, for your own use you will need to update it with your own domain name. Save it as sitemap.xml and you are good to go!

Update: As ArmNo pointed out, you will need to include site.posts and site.page in order to cover all the pages of your website.