toml_conf

用于从环境变量、命令行参数生成 toml，然后与已有的 toml 文件做配置合并。

用法见 ./src/lib.rs

```rust mod env; pub use env::{envwithprefix, kv_toml}; mod merge; pub use merge::merge;

[test]

fn test() { use toml::Value; let config = "[a] b=1 c=\"x\" f=3 "; println!("\n--- toml config ---\n{config}"); let env = std::env::vars(); let env = std::env::vars(); let env = envwithprefix(env, "TOMLCONF"); println!("--- env with prefix TOMLCONF ( set by direnv & ./.env ) ---\n"); for (k, v) in &env { println!("{k}={v}"); }

let toml = kvtoml(env, "_"); println!("\n--- convert env into toml ---\n{toml}"); let mut config = config.parse().unwrap();

merge(&mut config, &toml.parse().unwrap()); let config = toml::ser::tostringpretty(&config).unwrap(); println!("--- merge config and env ---\n{config}"); } ```

输出为

``` --- toml config --- [a] b=1 c="x" f=3

--- env with prefix TOMLCONF ( set by direnv & ./.env ) ---

ad="x" c=13 ab=0 aef="x"

--- convert env into toml --- c=13 [a.e] f="x" [a] d="x" b=0

--- merge config and env --- c = 13

[a] b = 0 c = "x" d = "x" f = 3

[a.e] f = "x" ```