hugolib: Add basic setup for output def per Kind

hugolib/site_output.go

@@ -0,0 +1,50 @@
+// Copyright 2017-present The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package hugolib
+
+import (
+	"strings"
+
+	"github.com/spf13/hugo/output"
+)
+
+var defaultOutputDefinitions = siteOutputDefinitions{
+	// All have HTML
+	siteOutputDefinition{ExcludedKinds: "", Outputs: []output.Type{output.HTMLType}},
+	// Some have RSS
+	siteOutputDefinition{ExcludedKinds: "page", Outputs: []output.Type{output.RSSType}},
+}
+
+type siteOutputDefinitions []siteOutputDefinition
+
+type siteOutputDefinition struct {
+	// What Kinds of pages are excluded in this definition.
+	// A blank strings means NONE.
+	// Comma separated list (for now).
+	ExcludedKinds string
+
+	Outputs []output.Type
+}
+
+func (defs siteOutputDefinitions) ForKind(kind string) []output.Type {
+	var result []output.Type
+
+	for _, def := range defs {
+		if def.ExcludedKinds == "" || !strings.Contains(def.ExcludedKinds, kind) {
+			result = append(result, def.Outputs...)
+		}
+	}
+
+	return result
+}