1 files changed, 76 insertions, 0 deletions
diff --git a/app/helpers/gitlab/blob_helper.rb b/app/helpers/gitlab/blob_helper.rb
new file mode 100644
index 00000000000..8b53ba8b54f
--- /dev/null
+++ b/app/helpers/gitlab/blob_helper.rb
@@ -0,0 +1,76 @@
+module Gitlab
+  module BlobHelper
+    def highlight(blob_name, blob_content, nowrap: false, continue: false)
+      @formatter ||= Rouge::Formatters::HTMLGitlab.new(
+        nowrap: nowrap,
+        cssclass: 'code highlight',
+        lineanchors: true,
+        lineanchorsid: 'LC'
+      )
+
+      begin
+        @lexer ||= Rouge::Lexer.guess(filename: blob_name, source: blob_content).new
+        result = @formatter.format(@lexer.lex(blob_content, continue: continue)).html_safe
+      rescue
+        @lexer = Rouge::Lexers::PlainText
+        result = @formatter.format(@lexer.lex(blob_content)).html_safe
+      end
+
+      result
+    end
+
+    def no_highlight_files
+      %w(credits changelog news copying copyright license authors)
+    end
+
+    def edit_blob_link(project, ref, path, options = {})
+      blob =
+        begin
+          project.repository.blob_at(ref, path)
+        rescue
+          nil
+        end
+
+      if blob && blob.text?
+        text = 'Edit'
+        after = options[:after] || ''
+        from_mr = options[:from_merge_request_id]
+        link_opts = {}
+        link_opts[:from_merge_request_id] = from_mr if from_mr
+        cls = 'btn btn-small'
+        if allowed_tree_edit?(project, ref)
+          link_to(text,
+                  namespace_project_edit_blob_path(project.namespace, project,
+                                                   tree_join(ref, path),
+                                                   link_opts),
+                  class: cls
+                 )
+        else
+          content_tag :span, text, class: cls + ' disabled'
+        end + after.html_safe
+      else
+        ''
+      end
+    end
+
+    def leave_edit_message
+      "Leave edit mode?\nAll unsaved changes will be lost."
+    end
+
+    def editing_preview_title(filename)
+      if Gitlab::MarkupHelper.previewable?(filename)
+        'Preview'
+      else
+        'Preview changes'
+      end
+    end
+
+    # Return an image icon depending on the file mode and extension
+    #
+    # mode - File unix mode
+    # mode - File name
+    def blob_icon(mode, name)
+      icon("#{file_type_icon_class('file', mode, name)} fw")
+    end
+  end
+end