hugo/transform/livereloadinject.go

// Copyright 2015 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"
)

func LiveReloadInject(ct contentTransformer) {
	match := []byte("</body>")
	replace := []byte(`<script data-no-instant>document.write('<script src="/livereload.js?mindelay=10"></' + 'script>')</script></body>`)

	newcontent := bytes.Replace(ct.Content(), match, replace, -1)
	if len(newcontent) == len(ct.Content()) {
		match := []byte("</BODY>")
		newcontent = bytes.Replace(ct.Content(), match, replace, -1)
	}

	ct.Write(newcontent)
}