repo-quest 0.3.4

Interactive programming tutorials via Github.
Documentation 
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use std::{collections::HashMap, ops::Deref, path::Path, process::Command, sync::LazyLock};

#[cfg(unix)]
fn get_user_env() -> HashMap<String, String> {
  use std::env;

  let shell = env::var("SHELL").unwrap_or_else(|_| String::from("sh"));
  let output = Command::new(shell)
    .args(["-c", "env"])
    .output()
    .expect("Failed to get shell env");
  let stdout = String::from_utf8(output.stdout).expect("Env vars not utf8");
  stdout
    .lines()
    .filter_map(|line| {
      let (key, value) = line.split_once("=")?;
      Some((key.to_string(), value.to_string()))
    })
    .collect()
}

static ENV: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
  #[cfg(unix)]
  {
    get_user_env()
  }

  #[cfg(not(unix))]
  {
    HashMap::default()
  }
});

pub fn command(args: &str, dir: &Path) -> Command {
  let mut arg_vec = shlex::split(args).expect("Invalid command");
  let mut cmd = Command::new(arg_vec.remove(0));
  cmd.current_dir(dir).envs(ENV.deref()).args(arg_vec);
  cmd
}