1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 |
- // Copyright 2009 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- package main
- import (
- "flag"
- "html/template"
- "log"
- "net/http"
- )
- var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
- var templ = template.Must(template.New("qr").Parse(templateStr))
- func main() {
- flag.Parse()
- http.Handle("/", http.HandlerFunc(QR))
- err := http.ListenAndServe(*addr, nil)
- if err != nil {
- log.Fatal("ListenAndServe:", err)
- }
- }
- func QR(w http.ResponseWriter, req *http.Request) {
- templ.Execute(w, req.FormValue("s"))
- }
- const templateStr = `
- <html>
- <head>
- <title>QR Link Generator</title>
- </head>
- <body>
- {{if .}}
- <img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{.}}" />
- <br>
- {{.}}
- <br>
- <br>
- {{end}}
- <form action="/" name=f method="GET"><input maxLength=1024 size=70
- name=s value="" title="Text to QR Encode"><input type=submit
- value="Show QR" name=qr>
- </form>
- </body>
- </html>
- `
|