(Go) How to use toml files?

Question

As title, I want to know how to use toml files from golang.

Before that, I show my toml examples. Is it right?

[datatitle]
enable = true
userids = [
             


        

Answer 1

I am using spf13/viper

3rd packages

Status	Project	Starts	Forks
Alive	spf13/viper
Unmaintained	BurntSushi/toml

so that is why I choose viper

usage of viper

I tried to use a table to put the code and the contents of the configuration file together, but obviously, the editing did not match the final result, so I put the image up in the hope that it would make it easier for you to compare

---

package main
import (
    "github.com/spf13/viper"
    "log"
    "os"
)
func main() {
    check := func(err error) {
        if err != nil {
            panic(err)
        }
    }
    myConfigPath := "test_config.toml"
    fh, err := os.OpenFile(myConfigPath, os.O_RDWR, 0666)
    check(err)
    viper.SetConfigType("toml") // do not ignore
    err = viper.ReadConfig(fh)
    check(err)

    // Read
    log.Printf("%#v", viper.GetString("title"))                 // "my config"
    log.Printf("%#v", viper.GetString("DataTitle.12345.prop1")) // "30"
    log.Printf("%#v", viper.GetString("dataTitle.12345.prop1")) // "30"  // case-insensitive
    log.Printf("%#v", viper.GetInt("DataTitle.12345.prop1"))    // 30
    log.Printf("%#v", viper.GetIntSlice("feature1.userids"))    // []int{456, 789}

    // Write
    viper.Set("database", "newuser")
    viper.Set("owner.name", "Carson")
    viper.Set("feature1.userids", []int{111, 222}) // overwrite
    err = viper.WriteConfigAs(myConfigPath)
    check(err)
}

title = "my config"

[datatitle]

  [datatitle.12345]
    prop1 = 30

[feature1]
  userids = [456,789]

database = "newuser"  # New
title = "my config"

[datatitle]

  [datatitle.12345]
    prop1 = 30

[feature1]
  userids = [111,222]  # Update

[owner]  # New
  name = "Carson"