go-gettext i18n

i18n.go

package main

import (
	"fmt"
	"os"
	"strconv"
	"strings"

	"github.com/samuel/go-gettext/gettext"
)

var domain *gettext.Domain

func main() {
	var err error
	domain, err = gettext.NewDomain("im", "./lang")
	if err != nil {
		panic(err)
	}

	fmt.Println(loc("logined as %1", os.Getenv("LOGNAME")))
}

func loc(msgid string, args ...string) string {
	tr := domain.GetText(os.Getenv("LANG"), msgid)
	for i, v := range args {
		p := "%" + strconv.Itoa(i+1)
		tr = strings.Replace(tr, p, v, 1)
	}
	return tr
}

$ LANG=ja_JP.UTF-8 go run i18n.go
fujiwara としてログインしています
$ LANG=en_US.UTF-8 go run i18n.go
logined as fujiwara