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asyncsrc.go
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/
asyncsrc.go
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/**
* Copyright 2020 Google LLC
*
* 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 asyncsrc
import (
"github.com/gauntface/go-html-asset-manager/v3/manipulations"
"github.com/gauntface/go-html-asset-manager/v3/utils/html/htmlparsing"
"golang.org/x/net/html"
)
func Manipulator(runtime manipulations.Runtime, doc *html.Node) error {
allElements := htmlparsing.FindNodesByTag("iframe", doc)
for _, ele := range allElements {
for i, a := range ele.Attr {
if a.Key != "src" {
continue
}
if a.Val == "" {
continue
}
ele.Attr = append(ele.Attr, html.Attribute{
Key: "data-src",
Val: a.Val,
})
ele.Attr = append(ele.Attr[:i], ele.Attr[i+1:]...)
}
}
return nil
}