Add option to embed the stylesheet

Author: jessedijkstra

lib/ex_css_modules/ex_css_modules.ex

@@ -21,7 +21,7 @@ defmodule ExCSSModules do
   def stylesheet(definition) when is_map(definition), do: definition
 
   @doc false
-  def stylesheet(definition), do: definition |> read_stylesheet()
+  def stylesheet(definition), do: read_stylesheet(definition)
 
   def read_stylesheet(filename) do
     case File.exists?(filename) do

lib/ex_css_modules/view.ex

@@ -7,27 +7,43 @@ defmodule ExCSSModules.View do
   Use the ExCSSModules.View on a view which defines the JSON for CSS Modules
   as an external resource.
 
+  To embed the stylesheet in the file set :embed_stylesheet to true.
+
   If adds the following functions to the View:
   - stylesheet/0 - same as ExCSSModules.stylesheet/1 with the stylesheet predefined
   - class/1 - same as ExCSSModules.class/2 with the stylesheet predefined
   - class_name/1 - same as ExCSSModules.class_name/2 with the stylesheet predefined
   - class_name/2 - same as ExCSSModules.class_name/3 with the stylesheet predefined
   - class_selector/1 - same as ExCSSModules.class_selector/2 with the stylesheet predefined
   """
+
   defmacro __using__(opts \\ []) do
+    {file, [file: relative_to]} = Code.eval_quoted(opts[:stylesheet], file: __CALLER__.file)
+
+    file = Path.expand(file, Path.dirname(relative_to))
+
     quote do
-      @external_resource unquote(opts[:stylesheet]) <> ".json"
-      @stylesheet ExCSSModules.read_stylesheet(unquote(opts[:stylesheet]))
+      @stylesheet unquote(
+        if opts[:embed_stylesheet] do
+          Macro.escape(ExCSSModules.read_stylesheet(file))
+        else
+          Macro.escape(file)
+        end
+      )
+
+      def stylesheet_definition, do: @stylesheet
 
       def stylesheet, do: ExCSSModules.stylesheet(@stylesheet)
 
-      def class(key), do: ExCSSModules.class(@stylesheet, key)
+      def class(key), do: stylesheet() |> ExCSSModules.class(key)
 
-      def class_name(key), do: ExCSSModules.class_name(@stylesheet, key)
+      def class_name(key) do
+        ExCSSModules.class_name(stylesheet(), key)
+      end
       def class_name(key, value), do:
-        ExCSSModules.class_name(@stylesheet, key, value)
+        ExCSSModules.class_name(stylesheet(), key, value)
 
-      def class_selector(key), do: ExCSSModules.class_selector(@stylesheet, key)
+      def class_selector(key), do: ExCSSModules.class_selector(stylesheet(), key)
     end
   end
 end

test/ex_css_modules/view_test.exs

@@ -7,14 +7,33 @@ defmodule ExCSSModules.ViewTest do
 
   defmodule ViewModuleTest do
     use ExCSSModules.View, stylesheet: __ENV__.file
-                                      |> Path.dirname
-                                      |> Path.join("../support/stylesheet.css")
+                                       |> Path.dirname
+                                       |> Path.join("../support/stylesheet.css")
+  end
+
+  defmodule EmbeddedViewModuleTest do
+    use ExCSSModules.View, stylesheet: __ENV__.file
+                                       |> Path.dirname
+                                       |> Path.join("../support/stylesheet.css"),
+                           embed_stylesheet: true
+  end
 
+  describe "stylesheet_definition/0" do
+    test "gets the stylesheet string" do
+      assert ViewModuleTest.stylesheet_definition
+        == Path.expand(@example_stylesheet)
+    end
+
+    test "gets the embedded stylesheet" do
+      assert EmbeddedViewModuleTest.stylesheet_definition
+        == ExCSSModules.stylesheet(@example_stylesheet)
+    end
   end
 
   describe "stylesheet/0" do
     test "calls the stylesheet" do
-      assert ViewModuleTest.stylesheet == ExCSSModules.stylesheet(@example_stylesheet)
+      assert ViewModuleTest.stylesheet
+        == ExCSSModules.stylesheet(@example_stylesheet)
     end
   end