# config-rs
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> Layered configuration system for Rust applications (with strong support for [12-factor] applications).

[12-factor]: https://12factor.net/config

 - Set defaults
 - Set explicit values (to programmatically override)
 - Read from [JSON], [TOML], and [YAML] files
 - Read from environment
 - Loosely typed — Configuration values may be read in any supported type, as long as there exists a reasonable conversion
 - Access nested fields using a formatted path — Uses a subset of JSONPath; currently supports the child ( `redis.port` ) and subscript operators ( `databases[0].name` )

[JSON]: https://github.com/serde-rs/json
[TOML]: https://github.com/toml-lang/toml
[YAML]: https://github.com/chyh1990/yaml-rust

## Usage

```toml
[dependencies]
config = "0.5"
```

 - `json` - Adds support for reading JSON files
 - `yaml` - Adds support for reading YAML files
 - `toml` - Adds support for reading TOML files (included by default)

See the [documentation](https://docs.rs/config) or [examples](https://github.com/mehcode/config-rs/tree/master/examples) for
more usage information.

## License

config-rs is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.
