toml文件解析--golang

toml的简单说明与配置
https://github.com/bbangert/toml
toml简介
解析toml配置文件
server.toml

[Mongo]
connstr="localhost"
dbname="blogs"
usertab="users"
blogtab="blogs"

[servers]
  ip = "localhost"
  port = ":8086"

conf.go
解析代码与toml文件保持一致，数量也是

package config

import (
    "errors"
    "flag"
    "fmt"
    "github.com/BurntSushi/toml"
    "os"
)

type Mongo struct {
    Connstr string
    DBName  string
    UserTab string
    BlogTab string
}

type Server struct {
    IP   string
    Port string
}
type Config struct {
    //DB database `toml:"database"`
    Mongo   Mongo
    Servers Server
}

var Conf *Config

func printHelp() {
    fmt.Printf("%s -c config_file [-h] [-v]\n", os.Args[0])
}
func printVer() {
    fmt.Printf("author   :%s\n", "abc")
    fmt.Printf("version:%s\n", "1.0.0")
    fmt.Printf("time   :%s\n", "2019-12")
}
func init() {
    if getConfig() != nil {
        os.Exit(-1)
    }
    fmt.Println(*Conf)
}
func getConfig() error {
    configFile := flag.String("c", "", "config_file")
    help := flag.Bool("h", false, "help")
    ver := flag.Bool("v", false, "version")
    flag.Parse()
    if *help {
        printHelp()
        os.Exit(0)
    }
    if *ver {
        printVer()
        os.Exit(0)
    }

    if *configFile == "" {
        printHelp()
        return errors.New("no config file")
    } else {
        Conf = &Config{}
        _, err := toml.DecodeFile(*configFile, Conf)
        if err != nil {
            fmt.Println("failed to decode config file", configFile, err)
            return err
        }
    }
    return nil
}

main.go添加
import _ "blog/config"
命令行 go build

$ ./blog -h
E:\code\go\blog\blog.exe -c config_file [-h] [-v]
$ ./blog -v
author   :abc
version:1.0.0
time   :2020-05-17 18:42:10.3490859 +0800 CST m=+0.025060301

admin@LAPTOP-F4QE2B2L MINGW64 /e/code/go/blog
$ ./blog -c etc/server.toml
{{localhost blogs users blogs} {localhost :8086}}