List fitting problem about go-i18n

[nicksnyder]

I am not sure what you are trying to do with this function here. What are you expecting to happen? Are you using v1 or v2 of the library? Can you include the full implementation of recGetMessages?

[Huang-JiaWei]

I would like to be able to translate an item of the list by something like item[n]
I'm using [email protected].
Here is an example
toml file:

item = ["item a", "item b", "item c"]

go.mod

module i18n_demo

go 1.18

require (
	github.com/BurntSushi/toml v1.0.0
	github.com/nicksnyder/go-i18n/v2 v2.2.1
)

require golang.org/x/text v0.4.0

code:

package main

import (
	"fmt"

	"github.com/BurntSushi/toml"
	"github.com/nicksnyder/go-i18n/v2/i18n"
	"golang.org/x/text/language"
)

func main() {
	bundle := i18n.NewBundle(language.English)
	bundle.RegisterUnmarshalFunc("toml", toml.Unmarshal)
	bundle.LoadMessageFile("./en.toml")

	localizer := i18n.NewLocalizer(bundle, language.English.String())
	fmt.Println(localizer.LocalizeMessage(&i18n.Message{ID: "item.1"}))  // I hope I can get "item b" this way
	fmt.Println(localizer.LocalizeMessage(&i18n.Message{ID: "item[1]"})) // Or this, or some other way it could be done
	fmt.Println(localizer.LocalizeMessage(&i18n.Message{ID: "item."}))
}

>>>  <nil>
>>>  <nil>
>>> item c <nil>

In the example I define a list and LoadMessageFile it.
Later I would like to be able to translate one of its items using i18n, but as indicated above, I can only get "item c" from "item."
By debuging in the source code I found (LoadMessageFile->ParseMessageFileBytes->ParseMessageFileBytes->recGetMessages)
recGetMessages switch []interface{}

// recGetMessages looks for translation messages inside "raw" parameter,
// scanning nested maps using recursion.
func recGetMessages(raw interface{}, isMapMessage, isInitialCall bool) ([]*Message, error) {
......
	case []interface{}:
		// Backward compatibility for v1 file format.
		messages = make([]*Message, 0, len(data))
		for _, data := range data {
			// recursively scan slice items
			childMessages, err := recGetMessages(data, isMessage(data), false)
			if err != nil {
				return nil, err
			}
			messages = append(messages, childMessages...)
		}
......
}

But in the string list case all childMessages are Message{ID: "", Other: data} elements
This results in the ID of all the elements in the item list being "item.", so eventually I can't get the correct translation of item[n]

[nicksnyder]

Oh, what you are trying to do is not supported. Each message key can only have one value.

You need to create a unique key for each message that you want to translate.