Merge pull request #3823 from 18F/adapt-static-file

Adapt StaticFile for collections, config defaults

lib/jekyll/static_file.rb

@@ -37,7 +37,7 @@ module Jekyll
 
     def destination_rel_dir
       if @collection
-        @dir.gsub(/\A_/, '')
+        File.dirname(url)
       else
         @dir
       end
@@ -61,9 +61,10 @@ module Jekyll
 
     # Whether to write the file to the filesystem
     #
-    # Returns true.
+    # Returns true unless the defaults for the destination path from
+    # _config.yml contain `published: false`.
     def write?
-      true
+      defaults.fetch('published', true)
     end
 
     # Write the static file to the destination directory (if modified).
@@ -100,5 +101,41 @@ module Jekyll
         "path"          => File.join("", relative_path)
       }
     end
+
+    def placeholders
+      {
+        collection: @collection.label,
+        path: relative_path[
+          @collection.relative_directory.size..relative_path.size],
+        output_ext: '',
+        name: '',
+        title: '',
+      }
+    end
+
+    # Applies a similar URL-building technique as Jekyll::Document that takes
+    # the collection's URL template into account. The default URL template can
+    # be overriden in the collection's configuration in _config.yml.
+    def url
+      @url ||= if @collection.nil?
+        relative_path
+      else
+        ::Jekyll::URL.new({
+          template:  @collection.url_template,
+          placeholders: placeholders,
+        })
+      end.to_s.gsub /\/$/, ''
+    end
+
+    # Returns the type of the collection if present, nil otherwise.
+    def type
+      @type ||= @collection.nil? ? nil : @collection.label.to_sym
+    end
+
+    # Returns the front matter defaults defined for the file's URL and/or type
+    # as defined in _config.yml.
+    def defaults
+      @defaults ||= @site.frontmatter_defaults.all url, type
+    end
   end
 end