Function console_prompt::command_loop

pub fn command_loop(
    commands: &Vec<Command<'_>>,
    context: &mut Option<Box<dyn Any>>
) -> Result<(), Box<dyn Error>>

Runs the actual command loop, providing readline output via rustyline. The context arg allows for the passing of additional ‘context’ information to maintain a state during subcalls if needed.

Examples found in repository

examples/conversation.rs (line 56)

fn converse(args: &[&str], _context: &mut Option<Box<dyn Any>>)->Result<String, Box<dyn Error>>{
    if args.len() == 0 {
        return Ok("no name provided".to_string());
    }
    println!("interacting with: {}", args[0]);
    let commands = vec![
        Command{command: "hello", func: hello, help_output: "hello - say hello"},
        Command{command: "change", func: change, help_output: "change <name> - change the name of the person with whom you're speaking"},
        //Command{command: "yes", func: yes, help_output: "yes - reply yes"},
        //Command{command: "no", func: no, help_output: "no - reply no"},
    ];

    let mut name: Option<Box<dyn Any>> = Some(Box::new(args[0].to_string()));
    // passing the arguments for the converse commands as context
    // to the commands in the next command loop for reference
    if let Err(e) = command_loop(&commands, &mut name){
        eprintln!("error running interact command loop: {}", e);
    }
    Ok(String::new())
}

fn main(){
    let commands = vec![
        Command{
            command: "converse",
            func: converse,
            help_output: "converse <name> - interact with a person"
        },
    ];

    // start the command loop with the provided commands
    if let Err(e) = command_loop(&commands, &mut None){
        eprintln!("error running command loop: {}", e.to_string());
    }
}