cicada 0.9.15

A simple Bash-like Unix shell.
Documentation 
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use std::env;
use std::path::Path;

use crate::scripting;
use crate::shell;
use crate::tools;

pub fn get_rc_file() -> String {
    let dir_config = tools::get_config_dir();
    let rc_file = format!("{}/cicadarc", dir_config);
    if Path::new(&rc_file).exists() {
        return rc_file;
    }

    // fail back to $HOME/.cicadarc
    let home = tools::get_user_home();
    let rc_file_home = format!("{}/{}", home, ".cicadarc");
    if Path::new(&rc_file_home).exists() {
        return rc_file_home;
    }

    // use std path if both absent
    rc_file
}

pub fn load_rc_files(sh: &mut shell::Shell) {
    // make "/usr/local/bin" as the first item in PATH
    if let Ok(env_path) = env::var("PATH") {
        if !env_path.contains("/usr/local/bin:") {
            let env_path_new = format!("/usr/local/bin:{}", env_path);
            env::set_var("PATH", &env_path_new);
        }
    }

    let rc_file = get_rc_file();
    if !Path::new(&rc_file).exists() {
        return;
    }

    let args = vec!["source".to_string(), rc_file];
    scripting::run_script(sh, &args);
}