1 files changed, 25 insertions, 0 deletions
diff --git a/lib/gitlab/markdown_helper.rb b/lib/gitlab/markdown_helper.rb
new file mode 100644
index 00000000000..abed12fe570
--- /dev/null
+++ b/lib/gitlab/markdown_helper.rb
@@ -0,0 +1,25 @@
+module Gitlab
+  module MarkdownHelper
+    module_function
+
+    # Public: Determines if a given filename is compatible with GitHub::Markup.
+    #
+    # filename - Filename string to check
+    #
+    # Returns boolean
+    def markup?(filename)
+      filename.downcase.end_with?(*%w(.textile .rdoc .org .creole .wiki
+                                      .mediawiki .rst .adoc .asciidoc .asc))
+    end
+
+    # Public: Determines if a given filename is compatible with
+    # GitLab-flavored Markdown.
+    #
+    # filename - Filename string to check
+    #
+    # Returns boolean
+    def gitlab_markdown?(filename)
+      filename.downcase.end_with?(*%w(.mdown .md .markdown))
+    end
+  end
+end