Add the scanners

lib/dimples/scanner/pages.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Dimples
+  module Scanner
+    # A helper class for scanning a directory of page files.
+    class Pages
+      def self.scan(source_path)
+        Dir[File.join(source_path, '**', '*.*')].map { |path| Dimples::Page.new(path: path) }
+      end
+    end
+  end
+end

lib/dimples/scanner/posts.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Dimples
+  module Scanner
+    # A helper class for scanning a directory of post files.
+    class Posts
+      def self.scan(source_path)
+        posts = Dir[File.join(source_path, '**', '*.*')].map { |path| Dimples::Post.new(path: path) }
+        posts.sort_by!(&:date).reverse!
+      end
+    end
+  end
+end

lib/dimples/scanner/templates.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module Dimples
+  module Scanner
+    # A helper class for scanning a directory of template files.
+    class Templates
+      def self.scan(source_path)
+        {}.tap do |templates|
+          Dir[File.join(source_path, '**', '*.*')].each do |path|
+            templates[File.basename(path, '.erb')] = Dimples::Template.new(path: path)
+          end
+        end
+      end
+    end
+  end
+end