package main
import (
"fmt"
"strings"
"github.com/dyatlov/go-opengraph/opengraph"
"golang.org/x/net/html"
)
func main() {
h := `
`
og := opengraph.NewOpenGraph()
doc, err := html.Parse(strings.NewReader(h))
if err != nil {
fmt.Println(err)
return
}
var parseHead func(*html.Node)
parseHead = func(n *html.Node) {
for c := n.FirstChild; c != nil; c = c.NextSibling {
if c.Type == html.ElementNode && c.Data == "meta" {
m := make(map[string]string)
for _, a := range c.Attr {
m[a.Key] = a.Val
}
og.ProcessMeta(m)
}
}
}
var f func(*html.Node)
f = func(n *html.Node) {
for c := n.FirstChild; c != nil; c = c.NextSibling {
if c.Type == html.ElementNode {
if c.Data == "head" {
parseHead(c)
continue
} else if c.Data == "body" { // OpenGraph is only in head, so we don't need body
break
}
}
f(c)
}
}
f(doc)
fmt.Printf("Type: %s\n", og.Type)
fmt.Printf("Title: %s\n", og.Title)
fmt.Printf("URL: %s\n", og.URL)
fmt.Printf("String/JSON Representation: %s\n", og)
}