Making it possible to have files for posts

_plugins/custom-posts.rb

@@ -19,6 +19,11 @@ def process_post(site, post_file)
             post.data["slug"] = post.data["title"]
 
             post.content = post.content.gsub(/\(images\//, '({{ page.url | relative_url }}images/')
+            post.content = post.content.gsub(/\(files\//, '({{ page.url | relative_url }}files/')
+
+            if post.data["title"] == "Cross AppDomain Singleton"
+                puts post.content
+            end
 
             site.collections['posts'].docs << post
           end         

_plugins/files-from-posts.rb

@@ -0,0 +1,21 @@
+Jekyll::Hooks.register :site, :post_write do |site|
+    site.posts.each do |post|
+        anchor_regex = /a href="(.*?)"/
+        file_regex = /files\/(.*?)"/
+        file_urls = post.content.scan(anchor_regex).flatten
+
+        source_directory = File.dirname(post.path)
+        destination_directory = File.dirname(post.destination('/'))
+
+        file_urls.each do |file_url|
+            file_url = File.join("files", File.basename(file_url))
+            file_path = File.join(source_directory, file_url)
+
+            if File.exist?(file_path)
+                file_dest = File.join(destination_directory, file_url)
+                FileUtils.mkdir_p(File.dirname(file_dest))
+                FileUtils.cp(file_path, file_dest)
+            end
+        end
+    end
+end