FlagStruct
A simple way to register and parse flag into struct
Wed, Jun 22, 2016
Install
go get -u github.com/ngdinhtoan/flagstruct
Tag syntax
`flag:"flagname" default:"default_value" usage:"description here"`
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