Bring back the RSS feed

Closes #307

Author: sondr3

src/main.rs

@@ -91,8 +91,7 @@ impl Blog {
                 ..ComrakOptions::default()
             };
 
-            let contents =
-                comrak::markdown_to_html(&contents[end_of_yaml + 5..], &options);
+            let contents = comrak::markdown_to_html(&contents[end_of_yaml + 5..], &options);
 
             // finally, the url.
             let mut url = PathBuf::from(&*filename);
@@ -117,9 +116,7 @@ impl Blog {
 
         // finally, sort the posts. oldest first.
 
-        posts.sort_by_key(|post|
-            format!("{}-{}-{}", post.year, post.month, post.day)
-        );
+        posts.sort_by_key(|post| format!("{}-{}-{}", post.year, post.month, post.day));
 
         posts.reverse();
 
@@ -134,6 +131,8 @@ impl Blog {
 
         self.render_posts()?;
 
+        self.render_feed()?;
+
         self.compile_sass("app");
         self.compile_sass("fonts");
 
@@ -205,6 +204,14 @@ impl Blog {
         Ok(())
     }
 
+    fn render_feed(&self) -> Result<(), Box<Error>> {
+        let posts: Vec<_> = self.posts.iter().by_ref().take(10).collect();
+        let data = json!({ "posts": posts });
+
+        self.render_template("feed.xml", "feed", data)?;
+        Ok(())
+    }
+
     fn copy_static_files(&self) -> Result<(), Box<Error>> {
         use fs_extra::dir::{self, CopyOptions};
 

templates/feed.hbs

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
+    <generator uri="https://blog.rust-lang.org/" version="0.1.0">Rust Blog</generator>
+    <link href="https://blog.rust-lang.org/feed.xml" rel="self" type="application/atom+xml" />
+    <link href="https://blog.rust-lang.org/" rel="alternate" type="text/html" />
+    <title>Rust Blog</title>
+    <subtitle>Empowering everyone to build reliable and efficient software.</subtitle>
+
+    {{#each posts}}
+    <entry>
+        <title>{{title}}</title>
+        <link rel="alternate" href="https://blog.rust-lang.org/{{url}}" type="text/html" title="{{title}}" />
+        <published>{{year}}-{{month}}-{{day}}</published>
+        <id>https://blog.rust-lang.org/{{url}}</id>
+        <content type="html" xml:base="https://blog.rust-lang.org/{{url}}">{{contents}}</content>
+    </entry>
+    {{/each}}
+</feed>

templates/headers.hbs

@@ -37,3 +37,6 @@
 <link rel="mask-icon" href="/images/safari-pinned-tab.svg" color="#5bbad5">
 <meta name="msapplication-TileColor" content="#00aba9">
 <meta name="theme-color" content="#ffffff">
+
+ <!-- atom -->
+ <link type="application/atom+xml" rel="alternate" href="https://blog.rust-lang.org/feed.xml" title="Rust Blog" />