91 lines
2.7 KiB
Markdown
91 lines
2.7 KiB
Markdown
# Internationalization
|
|
|
|
|
|
[](https://crates.io/crates/internationalization)
|
|
[](https://coveralls.io/github/terry90/internationalization-rs?branch=master)
|
|
[](https://travis-ci.org/terry90/internationalization-rs)
|
|
|
|
An simple compile time i18n implementation in Rust.
|
|
It throws a compilation error if the translation key is not present, but since the `lang` argument is dynamic it will panic if the language has not been added for the matching key.
|
|
|
|
> API documentation [https://crates.io/crates/internationalization](https://crates.io/crates/internationalization)
|
|
|
|
## Usage
|
|
|
|
Have a `locales/` folder somewhere in your app, root, src, anywhere. with `.json` files, nested in folders or not.
|
|
It uses a glob pattern: `**/locales/**/*.json` to match your translation files.
|
|
|
|
the files must look like this:
|
|
|
|
```json
|
|
{
|
|
"err.user.not_found": {
|
|
"fr": "Utilisateur introuvable: $email, $id",
|
|
"en": "User not found: $email, $id"
|
|
},
|
|
"err.answer.all": {
|
|
"fr": "Échec lors de la récupération des réponses",
|
|
"en": "Failed to retrieve answers"
|
|
},
|
|
"err.answer.delete.failed": {
|
|
"fr": "Échec lors de la suppression de la réponse",
|
|
"en": "Failed to delete answer"
|
|
}
|
|
}
|
|
```
|
|
|
|
Any number of languages can be added, but you should provide them for everything since it will panic if a language is not found when queried for a key.
|
|
|
|
In your app, just call the `t!` macro
|
|
|
|
```rust
|
|
use internationalization::t;
|
|
|
|
fn main() {
|
|
let lang = "en";
|
|
let res = t!("err.not_allowed", lang);
|
|
|
|
assert_eq!("You are not allowed to do this", res);
|
|
}
|
|
```
|
|
|
|
You can use interpolation, any number of argument is OK but you should note that they have to be sorted alphabetically.
|
|
To use variables, call the `t!` macro like this:
|
|
|
|
```rust
|
|
use internationalization::t;
|
|
|
|
fn main() {
|
|
let lang = "en";
|
|
let res = t!("err.user.not_found", email: "me@localhost", id: "1", lang);
|
|
|
|
assert_eq!("User not found: me@localhost, ID: 1", res);
|
|
}
|
|
```
|
|
|
|
## Installation
|
|
|
|
Internationalization is available on [crates.io](https://crates.io/crates/internationalization), include it in your `Cargo.toml`:
|
|
|
|
```toml
|
|
[dependencies]
|
|
internationalization = "0.0.3"
|
|
```
|
|
|
|
Then include it in your code like this:
|
|
|
|
```rust
|
|
#[macro_use]
|
|
extern crate internationalization;
|
|
```
|
|
|
|
Or use the macro where you want to use it:
|
|
|
|
```rust
|
|
use internationalization::t;
|
|
```
|
|
|
|
## Note
|
|
|
|
Internationalization will not work if no `PWD` env var is set at compile time.
|