（继续）如何使用toml文件？

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 = [
    "12345", "67890"
]
    [datatitle.12345]
    prop1 = 30
    prop2 = 10

    [datatitle.67890]
    prop1 = 30
    prop2 = 10

And then, I want to set these data as type of struct.

As a result I want to access child element as below.

datatitle["12345"].prop1
datatitle["67890"].prop2

Thanks in advance!

Answer 1

First get BurntSushi's toml parser:

go get github.com/BurntSushi/toml

BurntSushi parses toml and maps it to structs, which is what you want.

Then execute the following example and learn from it:

package main

import (
    "github.com/BurntSushi/toml"
    "log"
)

var tomlData = `title = "config"
[feature1]
enable = true
userids = [
  "12345", "67890"
]

[feature2]
enable = false`

type feature1 struct {
    Enable  bool
    Userids []string
}

type feature2 struct {
    Enable bool
}

type tomlConfig struct {
    Title string
    F1    feature1 `toml:"feature1"`
    F2    feature2 `toml:"feature2"`
}

func main() {
    var conf tomlConfig
    if _, err := toml.Decode(tomlData, &conf); err != nil {
        log.Fatal(err)
    }
    log.Printf("title: %s", conf.Title)
    log.Printf("Feature 1: %#v", conf.F1)
    log.Printf("Feature 2: %#v", conf.F2)
}

Notice the tomlData and how it maps to the tomlConfig struct.

See more examples at https://github.com/BurntSushi/toml