rustit/01_phase_rust_src/sv/src/main.rs

mod parser;

use std::env;
use std::process::exit;

fn main() {

    // def env variables.
    let svdir_env = env::var("SVDIR");
    let svwait_env = env::var("SVWAIT");

    let svdir_var = match svdir_env {
        Ok(var) => var,
        Err(..) => "/run/runit/service".to_string(),
    };

    let mut svwait_var = match svwait_env {
        Ok(env) => match env.parse::<i32>() {
            Ok(var) => var,
            Err(..) => 7,
        },
        Err(..) => 7,
    };

    let mut verbose = 0;

    dbg!(svdir_var);
    dbg!(svwait_var);


    // run the parser
    let args: Vec<String> = env::args().collect();

    let arg_parser: Vec<String> = parser::parse_args(args);

    //dbg!(arg_parser);


    
    let mut i = 0;
    let mut command;

    for val in arg_parser.iter() {
        if i == 0 {
            if val == "-v" {
                verbose = 1;
                dbg!(verbose);
            }
            else if val == "-w" {
                i = 3;
                // take next parametter before returning to i = 0.
            }
            else if val == "--" {
                i += 1;
            }
            else {
                if val.len() == 2 { 
                    println!("sv: illegal option -- {}", val.chars().nth(1).unwrap() );
                    // TODO: thread NOT pannic if it is not an ASCII character.
                }
                parser::misc::usage();
                exit(100);
            }
        }
        else if i == 1 {
            command = val;
            dbg!(command);
            i += 1;
        }
        // TODO: Exec the command on all given services.
        else if i == 3 {
            svwait_var = match val.parse::<i32>() {
                Ok(val) => val,
                Err(..) => svwait_var,
            };
            dbg!(svwait_var);
            i = 0;
        }
    }



    
    
}