mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
47 lines
1.6 KiB
Go
47 lines
1.6 KiB
Go
// Copyright 2018 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 livereloadinject
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
|
|
"github.com/gohugoio/hugo/helpers"
|
|
"github.com/gohugoio/hugo/transform"
|
|
)
|
|
|
|
// New creates a function that can be used
|
|
// to inject a script tag for the livereload JavaScript in a HTML document.
|
|
func New(port int) transform.Transformer {
|
|
return func(ft transform.FromTo) error {
|
|
b := ft.From().Bytes()
|
|
endBodyTag := "</body>"
|
|
match := []byte(endBodyTag)
|
|
replaceTemplate := `<script data-no-instant>document.write('<script src="/livereload.js?port=%d&mindelay=10&v=2"></' + 'script>')</script>%s`
|
|
replace := []byte(fmt.Sprintf(replaceTemplate, port, endBodyTag))
|
|
|
|
newcontent := bytes.Replace(b, match, replace, 1)
|
|
if len(newcontent) == len(b) {
|
|
endBodyTag = "</BODY>"
|
|
replace := []byte(fmt.Sprintf(replaceTemplate, port, endBodyTag))
|
|
match := []byte(endBodyTag)
|
|
newcontent = bytes.Replace(b, match, replace, 1)
|
|
}
|
|
|
|
if _, err := ft.To().Write(newcontent); err != nil {
|
|
helpers.DistinctWarnLog.Println("Failed to inject LiveReload script:", err)
|
|
}
|
|
return nil
|
|
}
|
|
}
|