From 3aaf71fdea914af1a7f2b2fb97bb6ae44132fcc4 Mon Sep 17 00:00:00 2001 From: Debanshu Kundu Date: Fri, 20 Jan 2017 23:11:13 +0530 Subject: #4257 Added functionality to create previews for post links using open graph data from those links. (#4890) --- .../dyatlov/go-opengraph/examples/advanced.go | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 vendor/github.com/dyatlov/go-opengraph/examples/advanced.go (limited to 'vendor/github.com/dyatlov/go-opengraph/examples/advanced.go') diff --git a/vendor/github.com/dyatlov/go-opengraph/examples/advanced.go b/vendor/github.com/dyatlov/go-opengraph/examples/advanced.go new file mode 100644 index 000000000..e24b821e7 --- /dev/null +++ b/vendor/github.com/dyatlov/go-opengraph/examples/advanced.go @@ -0,0 +1,58 @@ +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) +} -- cgit v1.2.3-1-g7c22