Read post listing item from template

src/main.rs

@@ -66,10 +66,16 @@ fn render_post(cwd: &path::PathBuf, layout: &str, post: &Post) {
 }
 
 fn render_post_listing(cwd: &path::PathBuf, layout: &str, posts: &Vec<Post>) {
+    let post_item_template =
+        fs::read_to_string(cwd.join("templates").join("post_listing_item.html"))
+            .expect("Couldn't find post listing item template");
     let post_listing = posts
         .iter()
-        .map(|ref post| format!("<li><a href='/{}/'>{}</a></li>", post.slug, post.title))
-        .collect::<Vec<String>>()
+        .map(|ref post| {
+            post_item_template
+                .replace("{{ slug }}", &post.slug)
+                .replace("{{ title }}", &post.title)
+        }).collect::<Vec<String>>()
         .join("\n");
 
     let output = layout.replace("{{ contents }}", &post_listing);