2023-2-WS_group_project_pmuw-innovative-shell/src/main.rs

mod error;
mod execute;
mod parse;
mod prompt;

use crate::error::ShellError;
use execute::interpret;
use rustyline::error::ReadlineError;
use rustyline::{Editor, Result};

use crate::prompt::Prompt;

fn main() -> Result<()> {
    let mut rl = Editor::<()>::new()?;

    let mut prompt = Prompt::new();

    loop {
        let readline = rl.readline(&prompt.get_prompt());

        match readline {
            Ok(line) => match interpret(&line) {
                Ok(_) => {}
                Err(ShellError::EmptyLine) => {
                    continue;
                }
                Err(ShellError::Execute(err)) => {
                    eprintln!("{}", err)
                }
            },
            Err(ReadlineError::Interrupted) => {
                break;
            }
            Err(ReadlineError::Eof) => {
                break;
            }
            Err(err) => {
                println!("Error: {:?}", err);
                break;
            }
        }
    }

    Ok(())
}