Built ontop the dotenvy and envy crates, serde-envfile supports both the serialization and the deserialization of environment variables from or to files (from_file, to_file), strings (from_str, to_string), or the environment of the application (from_env).
Extend your Cargo.toml configuration file to include serde-envfile as a dependency or install the package with the Cargo package manager.
cargo add serde-envfileuse serde::{Deserialize, Serialize};
use serde_envfile::{Error, from_str, to_string};
#[derive(Debug, Deserialize, Serialize)]
struct Test {
hello: String,
}
fn main() -> Result<(), Error> {
let env = "HELLO=\"WORLD\"";
let test: Test = from_str(env)?;
let env = to_string(&test)?;
println!("{}", env);
Ok(())
}Introducing the Value type, serde-envfile, provides a more flexible approach to working with environment variables.
use serde_envfile::{to_string, Error, Value};
fn main() -> Result<(), Error> {
let mut env = Value::new();
env.insert("hello".into(), "world".into());
let env = to_string(&env)?;
println!("{}", env);
Ok(())
}