# message-locator

Localization for message assets. This library uses [language-objects](https://crates.io/crates/language-objects) for working with language data.

## Usage

Add this to `Cargo.toml`:

```toml
[dependencies]
message-locator = "1"
maplit = "1.0"
tokio = { version = "1", features = ["full"] }
```

Example asset located at `res/lang/en/_.json`:

```rust
{
    "message_id": "Some message",
    "parameterized": "Here: $x",
    "contextual_male": "Male message",
    "contextual_female": "Female message",
    "contextual_other": "Other message",
    "qty_empty": "Empty ($number)",
    "qty_one": "One ($number)",
    "qty_multiple": "Multiple ($number)"
}
```

Example code:

```rust
use message_locator::{
    MessageLocator, MessageLocatorOptions, MessageLocatorAssetOptions,
    MessageLocatorLoadMethod,
    locator_vars,
};
use maplit::hashmap;

#[tokio::main]
async fn main() {
    let mut msg_locator = MessageLocator::new(
        MessageLocatorOptions::new()
            // Specify supported locale codes.
            // The form in which the locale code appears here
            // is a post-component for the assets "src" path. 
            // For example: "path/to/res/lang/en-US"
            .supported_locales(vec!["en", "en-US", "pt-BR"])
            .default_locale("en-US")
            .fallbacks(hashmap! {
                "en-US" => vec!["en"],
                "pt-BR" => vec!["en-US"],
            })
            .assets(MessageLocatorAssetOptions::new()
                .src("res/lang")
                .base_file_names(vec!["_"])
                // "clean_unused" indicates whether to clean previous unused locale data. 
                .clean_unused(true)
                // Specify MessageLocatorLoadMethod::FileSystem or MessageLocatorLoadMethod::Http
                .load_method(MessageLocatorLoadMethod::FileSystem))
    ); // msg_locator

    if !msg_locator.load(None).await {
        // failed to load
        return;
    }

    println!("{}", msg_locator.get("_.message_id"));
    println!("{}", msg_locator.get_formatted("_.parameterized", vec![ &locator_vars!{
        "x" => "foo"
    } ]));
    println!("{}", msg_locator.get_formatted("_.contextual", vec![ &"female" ]));
}
```