// use_urlshortener.go package main import ( urlshortener "code.google.com/p/google-api-go-client/urlshortener/v1" "fmt" "net/http" "text/template" ) func main() { http.HandleFunc("/", root) http.HandleFunc("/short", short) http.HandleFunc("/long", long) http.ListenAndServe("localhost:8080", nil) } // the template used to show the forms and the results web page to the user var rootHtmlTmpl = template.Must(template.New("rootHtml").Parse(`

URL SHORTENER

{{if .}}{{.}}

{{end}}
Shorten this:

Expand this: http://goo.gl/
`)) func root(w http.ResponseWriter, r *http.Request) { rootHtmlTmpl.Execute(w, nil) } func short(w http.ResponseWriter, r *http.Request) { longUrl := r.FormValue("longUrl") urlshortenerSvc, _ := urlshortener.New(http.DefaultClient) url, _ := urlshortenerSvc.Url.Insert(&urlshortener.Url{LongUrl: longUrl}).Do() rootHtmlTmpl.Execute(w, fmt.Sprintf("Shortened version of %s is : %s", longUrl, url.Id)) } func long(w http.ResponseWriter, r *http.Request) { shortUrl := "http://goo.gl/" + r.FormValue("shortUrl") urlshortenerSvc, _ := urlshortener.New(http.DefaultClient) url, err := urlshortenerSvc.Url.Get(shortUrl).Do() if err != nil { fmt.Println("error: %v", err) return } rootHtmlTmpl.Execute(w, fmt.Sprintf("Longer version of %s is : %s", shortUrl, url.LongUrl)) }