modcli/commands/
hello.rs

1use crate::command::Command;
2use crate::error::ModCliError;
3
4pub struct HelloCommand;
5
6impl Command for HelloCommand {
7    fn name(&self) -> &'static str {
8        "hello"
9    }
10
11    fn help(&self) -> Option<&str> {
12        Some("Greets the user")
13    }
14
15    fn validate(&self, args: &[String]) -> Result<(), ModCliError> {
16        if args.len() > 1 {
17            Err(ModCliError::InvalidUsage(
18                "Hello takes at most one argument (your name).".into(),
19            ))
20        } else {
21            Ok(())
22        }
23    }
24
25    fn execute(&self, args: &[String]) {
26        if let Some(name) = args.first() {
27            println!("Hello, {name}!");
28        } else {
29            println!("Hello!");
30        }
31    }
32}
modcli/commands/hello.rs

modcli/commands/
hello.rs
