diff --git a/hugolib/site.go b/hugolib/site.go
index bbbacb4a8..679fd202a 100644
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -1960,6 +1960,13 @@ func (s *Site) renderAndWritePage(name string, dest string, d interface{}, layou
transformLinks = append(transformLinks, transform.LiveReloadInject)
}
+ // For performance reasons we only inject the Hugo generator tag on the home page.
+ if n, ok := d.(*Node); ok && n.IsHome {
+ if !viper.GetBool("DisableHugoGeneratorInject") {
+ transformLinks = append(transformLinks, transform.HugoGeneratorInject)
+ }
+ }
+
var path []byte
if viper.GetBool("RelativeURLs") {
diff --git a/transform/hugogeneratorinject.go b/transform/hugogeneratorinject.go
new file mode 100644
index 000000000..fe82a2eaf
--- /dev/null
+++ b/transform/hugogeneratorinject.go
@@ -0,0 +1,44 @@
+// Copyright 2016 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 transform
+
+import (
+ "bytes"
+ "fmt"
+ "regexp"
+
+ "github.com/spf13/hugo/helpers"
+)
+
+var metaTagsCheck = regexp.MustCompile(`(?i)`, helpers.HugoVersion())
+
+func HugoGeneratorInject(ct contentTransformer) {
+ if metaTagsCheck.Match(ct.Content()) {
+ ct.Write(ct.Content())
+ return
+ }
+
+ head := ""
+ replace := []byte(fmt.Sprintf("%s\n\t%s", head, hugoGeneratorTag))
+ newcontent := bytes.Replace(ct.Content(), []byte(head), replace, 1)
+
+ if len(newcontent) == len(ct.Content()) {
+ head := ""
+ replace := []byte(fmt.Sprintf("%s\n\t%s", head, hugoGeneratorTag))
+ newcontent = bytes.Replace(ct.Content(), []byte(head), replace, 1)
+ }
+
+ ct.Write(newcontent)
+}
diff --git a/transform/hugogeneratorinject_test.go b/transform/hugogeneratorinject_test.go
new file mode 100644
index 000000000..3f8b26de7
--- /dev/null
+++ b/transform/hugogeneratorinject_test.go
@@ -0,0 +1,60 @@
+// Copyright 2016 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 transform
+
+import (
+ "bytes"
+ "testing"
+
+ "github.com/spf13/hugo/helpers"
+)
+
+func TestHugoGeneratorInject(t *testing.T) {
+ hugoGeneratorTag = "META"
+ for i, this := range []struct {
+ in string
+ expect string
+ }{
+ {`
+
+`, `
+ META
+
+`},
+ {`
+
+`, `
+ META
+
+`},
+ {``, ``},
+ {``, ``},
+ {``, ``},
+ {``, ``},
+ {"", ""},
+ {"", ""},
+ {"", "\n\tMETA"},
+ } {
+ in := helpers.StringToReader(this.in)
+ out := new(bytes.Buffer)
+
+ tr := NewChain(HugoGeneratorInject)
+ tr.Apply(out, in, []byte(""))
+
+ if out.String() != this.expect {
+ t.Errorf("[%d] Expected \n%q got \n%q", i, this.expect, out.String())
+ }
+ }
+
+}