Add --exclude_resource_types= flag (#27)

Author: raphink

lib/puppet/catalog-diff/differ.rb

@@ -71,6 +71,13 @@ def diff(options = {})
         end
       end
 
+      if options[:exclude_resource_types]
+        types = options[:exclude_resource_types].split(',')
+        [to, from].each do |c|
+          c.reject! { |x| types.include?(x[:type]) }
+        end
+      end
+
       Puppet.debug("Processing: #{from_file}")
       titles = {}
       titles[:to] = extract_titles(to)

lib/puppet/face/catalog/diff.rb

@@ -40,6 +40,10 @@
       summary 'Do not print defined resources in resource diffs'
     end
 
+    option '--exclude_resource_types=' do
+      summary 'A comma-separated list of (capitalized) resource types to exclude from the diff'
+    end
+
     option '--ignore_parameters=' do
       summary 'A comma-separated list of resource parameters to ignore in diff'
     end