Extracted `read_content` from site.rb into reader.rb

- Extracted
 - Updated References
 - Ran Tests

Signed-off-by: Martin Jorn Rogalla <martin@martinrogalla.com>

lib/jekyll/reader.rb

@@ -74,6 +74,14 @@ module Jekyll
       end
     end
 
+    def read_content(dir, magic_dir, klass)
+      get_entries(dir, magic_dir).map do |entry|
+        klass.new(site, site.source, dir, entry) if klass.valid?(entry)
+      end.reject do |entry|
+        entry.nil?
+      end
+    end
+
     # Read and parse all yaml files under <source>/<dir>
     #
     # Returns nothing

lib/jekyll/site.rb

@@ -175,7 +175,7 @@ module Jekyll
     #
     # Returns nothing.
     def read_posts(dir)
-      posts = read_content(dir, '_posts', Post)
+      posts = reader.read_content(dir, '_posts', Post)
 
       posts.each do |post|
         aggregate_post_info(post) if publisher.publish?(post)
@@ -189,7 +189,7 @@ module Jekyll
     #
     # Returns nothing.
     def read_drafts(dir)
-      drafts = read_content(dir, '_drafts', Draft)
+      drafts = reader.read_content(dir, '_drafts', Draft)
 
       drafts.each do |draft|
         if draft.published?
@@ -198,14 +198,6 @@ module Jekyll
       end
     end
 
-    def read_content(dir, magic_dir, klass)
-      reader.get_entries(dir, magic_dir).map do |entry|
-        klass.new(self, source, dir, entry) if klass.valid?(entry)
-      end.reject do |entry|
-        entry.nil?
-      end
-    end
-
     # Read in all collections specified in the configuration
     #
     # Returns nothing.