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