FlagStruct

A simple way to register and parse flag into struct

Install

go get -u github.com/ngdinhtoan/flagstruct

Tag syntax

`flag:"name" default:"value" usage:"description"`

Tag default and usage can be omit.

Example

package main

import (
	"fmt"

	"github.com/ngdinhtoan/flagstruct"
)

type dbConfig struct {
	Hostname string `flag:"hostname" default:"localhost" usage:"Hostname"`
	Port     uint64 `flag:"port" default:"3306"`
	DbName   string `flag:"db_name" usage:"Database name"`
}

func main() {
	conf := dbConfig{}
	flagstruct.Parse(&conf)

	fmt.Println("Hostname:", conf.Hostname)
	fmt.Println("Port:", conf.Port)
	fmt.Println("DB Name:", conf.DbName)
}

Run with some options:

go run main.go -hostname=127.0.0.1 -db_name=test_db

Output:

Hostname: 127.0.0.1
Port: 3306
DB Name: test_db