在一个toml文档中查找未解码的值。

huangapple
go评论107阅读模式
英文:

Go find undecoded values in a toml document

问题

我正在使用BurntSushi的go解析器（https://godocs.io/github.com/BurntSushi/toml），并按照他的示例来解码值，但似乎无法解码哈希表中的toml文档，以查找意外添加的额外键。

官方文档中解释了如何解码toml文档以查找任何额外的键（https://godocs.io/github.com/BurntSushi/toml#MetaData.Undecoded）。
按照上面的示例，我只想确保哈希表也是正确的：

  1. var blob = `
  2.     [kiwi]
  3. 		key1 = "value1"
  4. 		key2 = "value2"
  5. 		key3 = "value3"
  6. 	`
  8. var conf struct {
  9.     Key1 string
  10.     Key3 string
  11. }
  12. md, err := toml.Decode(blob, &conf)
  13. if err != nil {
  14.     log.Fatal(err)
  15. }
  17. fmt.Printf("Undecoded keys: %q\n", md.Undecoded())
  19. // 期望输出
  20. // Undecoded keys: ["kiwi.key2"]
  22. // 实际输出
  23. // Undecoded keys: ["kiwi" "kiwi.key1" "kiwi.key2" "kiwi.key3"]

我该如何将哈希表[kiwi]表示为conf结构体？

Go Playground链接：
https://go.dev/play/p/uHKbCEDwkg_p

谢谢阅读，任何帮助都将不胜感激。

英文:

I am using BurntSushi's go parser (https://godocs.io/github.com/BurntSushi/toml) and following his example to undecode values, It seems like I can't undecode a toml document inside a hash table to find extra keys that were added accidentaly.

Official docs, explaining how to decode a toml document to find any extra keys (https://godocs.io/github.com/BurntSushi/toml#MetaData.Undecoded)
Following the example above, I just want to ensure that the hash table is also correct:

  1. var blob = `
  2.     [kiwi]
  3. 		key1 = "value1"
  4. 		key2 = "value2"
  5. 		key3 = "value3"
  6. 	`
  8. var conf struct {
  9.     Key1 string
  10.     Key3 string
  11. }
  12. md, err := toml.Decode(blob, &conf)
  13. if err != nil {
  14.     log.Fatal(err)
  15. }
  17. fmt.Printf("Undecoded keys: %q\n", md.Undecoded())
  19. // Desired output
  20. // Undecoded keys: ["kiwi.key2"]
  22. // Actual output
  23. // Undecoded keys: ["kiwi" "kiwi.key1" "kiwi.key2" "kiwi.key3"]

How do I represent the hash table [kiwi] into the conf struct?

Go Playground link:
https://go.dev/play/p/uHKbCEDwkg_p

Thanks for reading, any help is appreciated.

答案1

得分: 0

  1. type kiwi struct {
  2. 	Key1 string
  3. 	Key3 string
  4. }
  6. func main() {
  7. 	var blob = `
  8. 	[kiwi]
  9.         key1 = "value1"
  10.         key2 = "value2"
  11.         key3 = "value3"
  12.     `
  13. 	var conf map[string]kiwi
  14. 	md, err := toml.Decode(blob, &conf)
  15. 	if err != nil {
  16. 		log.Fatal(err)
  17. 	}
  18. 	fmt.Printf("未解码的键: %q\n", md.Undecoded())
  20. 	//未解码的键: ["kiwi.key2"]  
  22. }

请注意，我只翻译了代码部分，其他内容不做翻译。

英文:

https://github.com/BurntSushi/toml/blob/master/_example/example.toml

  1. type kiwi struct {
  2. 	Key1 string
  3. 	Key3 string
  4. }
  6. func main() {
  7. 	var blob = `
  8. 	[kiwi]
  9.         key1 = "value1"
  10.         key2 = "value2"
  11.         key3 = "value3"
  12.     `
  13. 	var conf map[string]kiwi
  14. 	md, err := toml.Decode(blob, &conf)
  15. 	if err != nil {
  16. 		log.Fatal(err)
  17. 	}
  18. 	fmt.Printf("Undecoded keys: %q\n", md.Undecoded())
  20. 	//Undecoded keys: ["kiwi.key2"]  
  22. }

答案2

得分: 0

最终，使用以下结构体，它将仅成功检查表名：

  1. type config struct {
  2.     Kiwi struct {
  3.         Key1 string
  4.         Key3 string
  5.     }
  6. }
  7. var conf config
  8. md, err := toml.Decode(blob, &conf)
  9. if err != nil {
  10.     panic(err)
  11. }
  12. fmt.Printf("未解码的键：%q\n", md.Undecoded())
英文:

Finally with the following struct, it will only succesfully check for the table name:

  1.    type config struct {
  2.         Kiwi struct {
  3.            Key1 string
  4.            Key3 string
  5.         }
  6.     }
  7.     var conf config
  8.     md, err := toml.Decode(blob, &conf)
  9.     if err != nil {
  10.         panic(err)
  11.     }
  12.     fmt.Printf("Undecoded keys: %q\n", md.Undecoded())

huangapple
  • 本文由 发表于 2022年10月18日 04:28:25
  • 转载请务必保留本文链接：https://go.coder-hub.com/74102892.html
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