Extract template filling: pair usage consistant

client/public/gen.ex

@@ -5,6 +5,22 @@ post_template = File.read!("./templates/post_single_page.html")
 post_feed_item_template = File.read!("./templates/post_item.xml")
 post_feed_template = File.read!("./templates/posts.xml")
 
+# Converting handlebars in template to values
+fill_template = fn template, pairs ->
+  Regex.compile!("{{(.*)}}") |>
+  Regex.replace(template, fn _, key -> if key != "content" do Map.get(pairs, String.to_atom(key)) else
+    Map.get(pairs, String.to_atom(key))
+    # Converting \n to paragraphs
+    |> String.split("\\n")
+    |> Enum.reject(fn(x) -> x == "" end)
+    |> Enum.map(fn paragraph -> ("<p>" <> paragraph <> "</p>\n") end)
+    |> Enum.join("")
+    end
+  end)
+end
+
+fill_template_pretemplated = fn template -> &fill_template.(template, &1) end
+
 post_contents = File.ls!("./posts")
   |> Enum.reject(fn(x) -> String.starts_with?(x, ".") end)
   |> Enum.map(fn f -> File.read!("./posts/" <> f) end)
@@ -26,43 +42,28 @@ index_file = post_contents
       Enum.map(fn post -> "<h2>" <> (Map.get(post, :date) |> String.slice(0..9)) <>
                         " - <a href=\"" <> Map.get(post, :id) <> ".html\">" <> Map.get(post, :title) <> "</a></h2>"
       end) |> Enum.join("\n")) end) 
-  |> (fn template -> Regex.replace(Regex.compile!("{{index}}"), index_template, fn _, __ -> template end) end).()
+  |> Enum.join("\n")
+  |> (fn v -> %{index: v} end).()
+  |> fill_template_pretemplated.(index_template).()
 
 File.open!("./gen/index.html", [:write])
   |> IO.binwrite(index_file)
   |> File.close()
 
-
 post_contents
   |> Enum.each(fn post ->
       File.open!("./gen/" <> Map.get(post, :id) <> ".html", [:write])
-      |> IO.binwrite(
-          # Converting handlebars to values
-          Regex.compile!("{{(.*)}}") |>
-          Regex.replace(post_template, fn _, key -> if key != "content" do Map.get(post, String.to_atom(key)) else
-            Map.get(post, String.to_atom(key))
-            # Converting \n to paragraphs
-            |> String.split("\\n")
-            |> Enum.reject(fn(x) -> x == "" end)
-            |> Enum.map(fn paragraph -> ("<p>" <> paragraph <> "</p>\n") end)
-            |> Enum.join("")
-            end
-          end))
+      |> IO.binwrite(fill_template.(post_template, post))
       |> File.close()
   end)
 
 post_feed = post_contents
   |> Enum.sort_by(fn m -> Map.get(m, :date) end)
   |> Enum.reverse()
-  |> Enum.map(fn post ->
-          Regex.compile!("{{(.*)}}") |>
-    Regex.replace(post_feed_item_template, fn _, key -> Map.get(post, String.to_atom(key))
-    end)
-  end)
+  |> Enum.map(fill_template_pretemplated.(post_feed_item_template))
   |> Enum.join("\n")
-  |> (fn items -> (Regex.compile!("{{items}}") |>
-    Regex.replace(post_feed_template, fn _, __ -> items end))
-      end).()
+  |> (fn v -> %{items: v} end).()
+  |> fill_template_pretemplated.(post_feed_template).()
 
 File.open!("./gen/rss.xml", [:write])
   |> IO.binwrite(post_feed)