custom_tryread/
custom_tryread.rs

1use smart_read::*;
2
3
4
5// take in a password input
6fn main() {
7	let input = read!(PasswordInput {min_len: 10, min_digits: 1});
8	println!("You entered: \"{input}\"");
9}
10
11
12
13struct PasswordInput {
14	pub min_len: usize,
15	pub min_digits: usize,
16}
17
18impl TryRead for PasswordInput {
19	type Output = String;
20	type Default = (); // ensure no default can be given
21	fn try_read_line(self, prompt: Option<String>, _default: Option<Self::Default>) -> smart_read::BoxResult<Self::Output> {
22		let prompt = prompt.unwrap_or_else(
23			|| format!("Enter a password (must have {}+ characters and have {}+ digits): ", self.min_len, self.min_digits)
24		);
25		loop {
26			
27			// you could also do `let password = try_prompt!(prompt)?;`
28			print!("{prompt}");
29			let password = read_stdin()?;
30			
31			if password.len() < 10 {
32				println!("Invalid, password must have at least 10 characters");
33				continue;
34			}
35			if password.chars().filter(|c| c.is_digit(10)).count() < 1 {
36				println!("Invalid, password must have at least 1 digit");
37				continue;
38			}
39			
40			return Ok(password)
41			
42		}
43	}
44}
custom_tryread/custom_tryread.rs

custom_tryread/
custom_tryread.rs
