INI Configuration Provider

These features are only available if the ini feature is activated

The IniConfigurationProvider supports loading configuration from an *.ini file.

The following code adds several configuration providers, including a couple of *.ini files:

use config::{*, ext::*};

fn main() {
    let name = std::env::var("ENVIRONMENT").or_else("production");
    let config = DefaultConfigurationBuilder::new()
        .add_ini_file("MyIniConfig.ini".is().optional())
        .add_ini_file(format!("MyIniConfig.{}.ini", name).is().optional())
        .add_env_vars()
        .add_command_line()
        .build()
        .unwrap();
}

In the preceding code, settings in the MyIniConfig.ini and MyIniConfig.{Environment}.ini files are overridden by settings in the:

• Environment variables configuration provider
• Command-line configuration provider

Assume the MyIniConfig.ini file contains:

MyKey="MyIniConfig.ini Value"

[Position]
Title="My INI Config title"
Name="My INI Config name"

[Logging:LogLevel]
Default=Information
App=Warning

The following code displays several of the preceding configurations settings:

let my_key_value = config.get("MyKey").unwrap().as_str();
let title = config.get("Position:Title").unwrap().as_str();
let name = config.section("Position").get("Name").unwrap().as_str();
let default_log_level = config.get("Logging:LogLevel:Default").unwrap().as_str();

println!("MyKey value: {}\n\
          Title: {}\n\
          Name: {}\n\
          Default Log Level: {}",
          my_key_value,
          title,
          name,
          default_log_level);