prompt_validate/
prompt_validate.rs

1//! Example: composable validators + clean Ctrl+C handling.
2//!
3//! ```bash
4//! cargo run --example prompt_validate
5//! ```
6
7use cli_ui::prompt::prelude::*;
8
9fn main() {
10    let _ = colors(); // silence unused-import warning if you remove theming below
11
12    intro("Validation playground");
13
14    let abort = "Aborted — nothing was saved.";
15
16    // 12-word seed phrase, composed from primitives.
17    let lowercase_words = Validator::new(|v: &str| {
18        if v.split_whitespace()
19            .all(|w| w.chars().all(|c| c.is_ascii_lowercase()))
20        {
21            Ok(())
22        } else {
23            Err("Words must be lowercase ASCII".into())
24        }
25    });
26    let _seed = text("Recovery phrase")
27        .rule(word_count(12).and(lowercase_words))
28        .run()
29        .or_cancel(abort);
30
31    let _pw = secret("Set a password")
32        .rule(
33            min_chars(12)
34                .and(has_upper())
35                .and(has_lower())
36                .and(has_digit())
37                .and(has_special())
38                .msg("≥12 chars with upper, lower, digit, and a special char"),
39        )
40        .run()
41        .or_cancel(abort);
42
43    let _mail = text("Email")
44        .placeholder("you@example.com")
45        .rule(email())
46        .run()
47        .or_cancel(abort);
48
49    let _port = text("Listen port")
50        .default("8080")
51        .rule(int_between(1024, 65535))
52        .run()
53        .or_cancel(abort);
54
55    let _user = text("Username")
56        .rule(
57            min_chars(3)
58                .and(max_chars(20))
59                .and(alphanumeric())
60                .msg("3–20 alphanumeric characters"),
61        )
62        .run()
63        .or_cancel(abort);
64
65    let _name = text("Display name")
66        .validate(|s: &str| {
67            if s.contains(char::is_whitespace) {
68                Err("No spaces allowed".into())
69            } else {
70                Ok(())
71            }
72        })
73        .run()
74        .or_cancel(abort);
75
76    outro("All validators passed!");
77}
prompt_validate/prompt_validate.rs

prompt_validate/
prompt_validate.rs
