diff options
Diffstat (limited to 'transform/hugogeneratorinject.go')
-rw-r--r-- | transform/hugogeneratorinject.go | 44 |
1 files changed, 44 insertions, 0 deletions
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)<meta\s+name=['|"]?generator['|"]?`) +var hugoGeneratorTag = fmt.Sprintf(`<meta name="generator" content="Hugo %s" />`, helpers.HugoVersion()) + +func HugoGeneratorInject(ct contentTransformer) { + if metaTagsCheck.Match(ct.Content()) { + ct.Write(ct.Content()) + return + } + + head := "<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 := "<HEAD>" + replace := []byte(fmt.Sprintf("%s\n\t%s", head, hugoGeneratorTag)) + newcontent = bytes.Replace(ct.Content(), []byte(head), replace, 1) + } + + ct.Write(newcontent) +} |