struct_input/
util.rs

1pub mod formats;
2
3use tokio::io::{self, AsyncBufReadExt, BufReader};
4use crate::Format;
5
6pub async fn read_string_option(prompt: &str, format_checker: Format) -> Option<String> {
7    let mut reader = BufReader::new(io::stdin());
8    loop {
9        println!("{prompt}");
10        println!("(Leave empty and press Enter to set as None)");
11        let mut value = String::new();
12        match reader.read_line(&mut value).await {
13            Ok(_) => (),
14            Err(_) => continue
15        }
16
17        let value = value.trim();
18
19        if value.is_empty() {
20            return None
21        }
22
23        if format_checker.valid(value) {
24            return Some(value.to_string());
25        } else {
26            println!("invalid input");
27        }
28    }
29}
30
31pub async fn read_string(prompt: &str, format_checker: Format, default: Option<String>) -> String {
32    let mut reader = BufReader::new(io::stdin());
33    loop {
34        println!("{prompt}");
35        let mut value = String::new();
36        match reader.read_line(&mut value).await {
37            Ok(_) => (),
38            Err(_) => continue
39        }
40
41        let value = value.trim();
42
43        if value.is_empty() && let Some(default) = default {
44            return default;
45        }
46
47        if format_checker.valid(value) {
48            return value.to_string();
49        } else {
50            println!("invalid input");
51        }
52    }
53}
54
55pub async fn read_int(prompt: &str) -> i32 {
56    let mut reader = BufReader::new(io::stdin());
57    loop {
58        println!("{prompt}");
59        let mut value = String::new();
60        match reader.read_line(&mut value).await {
61            Ok(_) => (),
62            Err(_) => continue
63        }
64
65        let value = value.trim();
66
67        match value.parse() {
68            Ok(value) => {
69                return value
70            },
71            Err(_) => {
72                println!("invalid input");
73                continue;
74            }
75        };
76    }
77}
struct_input/util.rs

struct_input/
util.rs
