github.com/mattn/go-libxml2

go-libxml2

Interface to libxml2, with DOM interface

This library is still in very early stages of development. API may still change

import (
	"log"
	"net/http"

	"github.com/lestrrat/go-libxml2"
)

func ExampleHTML() {
	res, err := http.Get("http://golang.org")
	if err != nil {
		panic("failed to get golang.org: " + err.Error())
	}

	doc, err := libxml2.ParseHTML(res.Body)
	if err != nil {
		panic("failed to parse HTML: " + err.Error())
	}
	defer doc.Free()

	doc.Walk(func(n Node) error {
		log.Printf(n.NodeName())
		return nil
	})

	nodes, err := doc.FindNodes(`//div[@id="menu"]/a`)
	if err != nil {
		panic("failed to evaluate xpath: " + err.Error())
	}

	for i := 0; i < len(nodes); i++ {
		log.Printf("Found node: %s", nodes[i].NodeName())
	}
}

Caveats

Other libraries

There exists many similar libraries. I want speed, I want DOM, and I want XPath.When all of these are met, I'd be happy to switch to another library.

For now my closest contender was xmlpath, but as of this writing it suffers in the speed (for xpath) area a bit:

go test -tags bench -bench=. -benchtime=5s
PASS
BenchmarkXmlpath      100000         88764 ns/op
BenchmarkLibxml2      300000         22509 ns/op
ok      github.com/lestrrat/go-libxml2  24.926s