add mkqrcode.go

Makefile

@@ -30,6 +30,9 @@ review:
 	gitbook build
 	go run zh2tw.go . .md$$ zh2tw
 
+qrcode:
+	go run mkqrcode.go
+
 fixlink:
 	go run fixlinks.go . .md$$
 

mkqrcode.go

@@ -0,0 +1,33 @@
+// Copyright 2015 <chaishushan{AT}gmail.com>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ingore
+
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+
+	qr "github.com/chai2010/image/qrencoder"
+)
+
+const (
+	gopl_zh_url = "http://golang-china.github.io/gopl-zh/"
+	output      = "gopl-zh-qrcode.png"
+)
+
+func main() {
+	c, err := qr.Encode(gopl_zh_url, qr.H)
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = ioutil.WriteFile(output, c.PNG(), 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println("output:", output)
+}