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。

先设置环境变量 source ./env:

rust export TEST_server__host=127.0.0.1 export TEST_site__title="xxAI.Art - 我们计算艺术" export TEST_grpc_port=9999 export TEST_site__xxai_art__mail=xxai.art@gmail.com export TEST_compress=true

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 std::env::vars;

let config = "grpcport=1234 mysqlport=1235

[site] title=\"a b c\" password=\"xyz\"

[site.xxai_art] hide=true "; println!("\n## toml config\n\n```toml\n{config}\n");

let prefix = "TEST"; let env = envwith_prefix(vars(), prefix);

let toml = kvtoml(env, "_"); println!("## convert env into toml\n\ntoml\n{toml}\n");

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\ntoml\n{config}\n"); } ```

输出为 :

toml config

```toml grpcport=1234 mysqlport=1235

[site] title="a b c" password="xyz"

[site.xxai_art] hide=true

convert env into toml

```toml grpcport=9999 compress=true [site] title="xxAI.Art - 我们计算艺术" [site.xxaiart] mail="xxai.art@gmail.com" [server] host="127.0.0.1"

```

merge config and env

```toml compress = true grpcport = 9999 mysqlport = 1235

[server] host = "127.0.0.1"

[site] password = "xyz" title = "xxAI.Art - 我们计算艺术"

[site.xxai_art] hide = true mail = "xxai.art@gmail.com"

```