lib/spinebox/compiler.rb in spinebox-0.0.14 vs lib/spinebox/compiler.rb in spinebox-0.0.15

@@ -1,8 +1,10 @@
 module Spinebox
   module Compiler
     
+    require "digest"
+    
     # Compiles the assets and the views into the public folder
     def self.compile
       Spinebox.config.concatenate = true
       create_directories
       compile_javascripts
@@ -17,27 +19,45 @@
       Dir.mkdir "public/assets"  unless File.directory?("public/assets")
     end
     
     def self.compile_javascripts
       asset = Spinebox.assets["application.js"]
-      asset.write_to(File.join("public/assets", asset.logical_path))
+      path  = File.join("public/assets", asset.logical_path)
+      
+      write_asset!(asset, path) if asset_updated?(asset, path)
     end
     
     def self.compile_stylesheets
       asset = Spinebox.assets["application.css"]
-      asset.write_to(File.join("public/assets", asset.logical_path))
+      path  = File.join("public/assets", asset.logical_path)
+      
+      write_asset!(asset, path) if asset_updated?(asset, path)
     end
     
     def self.compile_views
       Spinebox.views.each_logical_path do |logical_path|
         next if logical_path.start_with?("_")
         asset = Spinebox.views[logical_path]
-        asset.write_to(File.join("public", asset.logical_path))
+        path  = File.join("public", asset.logical_path)
+        
+        write_asset!(asset, path) if asset_updated?(asset, path)
       end      
     end
     
     def self.copy_images
-      FileUtils.cp_r "app/assets/images/.", "public/assets"
+      FileUtils.cp_r "app/assets/images/.", "public/assets", :preserve => true
+    end
+    
+    def self.asset_updated?(asset, path)
+      return true unless File.exists?(path)
+      Digest::SHA2.file(path).hexdigest != Digest::SHA2.hexdigest(asset.to_s)
+    end
+    
+    def self.write_asset!(asset, path)
+      asset.write_to(path) 
+      time = Time.now
+      File.utime(time, time, path)
+      puts path
     end
     
   end
 end
\ No newline at end of file