Small library for simple internationalization in Go.

var ctx InterContext
ctx.Init()
ctx.AddLocale("pt_BR", map[string]string{"hello": "olá"})

Optionally set the prefered locale to properly use ctx.Get():

ctx.SetPreferedLocale("pt_BR")

This returns "olá", as we have a "pt_BR" locale set.

txt, err := ctx.GetFromLocale("hello", "pt_BR")

This returns "olá", as we haven't set any Portuguese Portuguese locale, so it falls back to other locales in the same language:

txt, err = ctx.GetFromLocale("hello", "pt_PT")

This returns "hello", as we haven't set any English language locale, so it'll just return the string we have passed.

txt, err = ctx.GetFromLocale("hello", "en_US")

It's possible to set a prefered locale. This way, we simply use ctx.Get() to retrive strings instead of passing the locale every time:

err := ctx.SetPreferedLocale(locale)
if err != nil {
    return fmt.Errorf("error parsing locale string: %v", locale)
}
txt := ctx.Get("hello")

Note how ctx.Get() does not need to return any error as it does not parses a locale string.

It's also possible to automatically set the prefered locale from the environment variables LC_ALL and LANG:

err := ctx.AutoSetPreferedLocale()
if err != nil {
    return fmt.Errorf("error parsing environment variables: %v", err)
}