qrcp/qr/qr.go

package qr

import (
	"fmt"
	"image"
	"log"
	"os"
	"path/filepath"

	"github.com/skip2/go-qrcode"
)

// RenderString as a QR code
func RenderString(s string) {
	q, err := qrcode.New(s, qrcode.Medium)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(q.ToSmallString(false))
	
	dir, err1 := filepath.Abs(filepath.Dir(os.Args[0]))
	if err1 != nil {
		log.Fatal(err1)
	}
	err2 := qrcode.WriteFile(s, qrcode.Medium, 200, dir + "/tmp.png")
	if err2 != nil {
		panic(err2)
	}
}

// RenderImage returns a QR code as an image.Image
func RenderImage(s string) image.Image {
	q, err := qrcode.New(s, qrcode.Medium)
	if err != nil {
		log.Fatal(err)
	}
	return q.Image(256)
}