A simple cross-platform Rust utility to expand environment variable placeholders in strings.
Supports:
- Unix-style:
$VAR,${VAR} - Windows-style:
%VAR%
Missing environment variables are replaced with empty strings by default. In the future they will error out
Add to your project:
mod env_expand;
use env_expand::expand_env_vars;
fn main() {
std::env::set_var("USERNAME", "alice");
let input = "Hello $USERNAME!";
match expand_env_vars(input) {