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35 lines (27 sloc) 556 Bytes
package title
import (
"golang.org/x/net/html"
"io"
)
func isTitleElement(n *html.Node) bool {
return n.Type == html.ElementNode && n.Data == "title"
}
func traverse(n *html.Node) (string, bool) {
if isTitleElement(n) {
return n.FirstChild.Data, true
}
for c := n.FirstChild; c != nil; c = c.NextSibling {
result, ok := traverse(c)
if ok {
return result, ok
}
}
return "", false
}
func GetHtmlTitle(r io.Reader) (string, bool) {
doc, err := html.Parse(r)
if err != nil {
panic("Fail to parse html")
}
return traverse(doc)
}