Extract helper and replace if with case

src/api/app/helpers/webui/buildresult_helper.rb

@@ -64,4 +64,16 @@ def collapse_link(expanded, main_name, repository_name = nil)
       end
     end
   end
+
+  # Paints an rpmlog line green-ish when the line has a Warning and red when it has an error.
+  def colorize_line(line)
+    case line
+    when /\w+(?:\.\w+)+: W: /
+      tag.span(line.strip, style: 'color: olive;')
+    when /\w+(?:\.\w+)+: E: /
+      tag.span(line.strip, style: 'color: red;')
+    else
+      line.strip
+    end
+  end
 end

src/api/app/views/webui/package/_rpmlint_log.html.haml

@@ -1,8 +1,3 @@
 -# FIXME: move this into a helper
 - @log.lines.each do |line|
-  - if /\w+(?:\.\w+)+: W: /.match?(line)
-    = tag.span(line.strip, style: 'color: olive;')
-  - elsif /\w+(?:\.\w+)+: E: /.match?(line)
-    = tag.span(line.strip, style: 'color: red;')
-  - else
-    = line.strip
+  = colorize_line(line)