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package util
import (
"errors"
"golang.org/x/net/html"
"os"
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"strconv"
)
func LoadHtml(p string) (*html.Node, error) {
f, err := os.Open(p)
if err != nil {
return nil, err
}
defer f.Close()
return html.Parse(f)
}
func GetAttribute(attrs []html.Attribute, key string) string {
for _, attr := range attrs {
if attr.Key == key {
return attr.Val
}
}
return ""
}
var internalIDCounter int = 999
func GetNextId() string {
internalIDCounter++
return "id" + strconv.Itoa(internalIDCounter)
}
func GetOrCreateId(node *html.Node, text string) string {
var err error
nodeId := GetAttribute(node.Attr, "id")
if nodeId != "" {
return nodeId
}
nodeId, err = BuildTextKey(text)
if err != nil {
nodeId = GetNextId()
}
node.Attr = append(node.Attr, html.Attribute{Key: "id", Val: nodeId})
return nodeId
}
func ReplaceAttribute(node *html.Node, key, value string) {
for i, attr := range node.Attr {
if attr.Key != key {
continue
}
node.Attr[i].Val = value
return
}
node.Attr = append(node.Attr, html.Attribute{Key: key, Val: value})
}
func SaveHtml(p string, node *html.Node) error {
var f *os.File
var err error
_, err = os.Stat(p)
if errors.Is(err, os.ErrNotExist) {
var dir = path.Dir(p)
err := os.MkdirAll(dir, os.ModePerm)
if err != nil {
return err
}
if err != nil {
return err
}
} else if err != nil {
return err
} else {
err := os.Remove(p)
if err != nil {
return err
}