1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
use std::net::Ipv4Addr;
/// Checks if the string is a valid ipv4 address.
///
/// # Arguments
///
/// * `s` - The string to check.
///
/// # Returns
///
/// Returns true if string is a valid ipv4 address, false if not.
///
/// # Examples
///
/// ```
/// use rufl::string;
///
/// assert_eq!(true, string::is_ipv4("127.0.0.1"));
///
/// assert_eq!(false, string::is_ipv4("256.0.0.1"));
///
/// ```
pub fn is_ipv4(s: impl AsRef<str>) -> bool {
s.as_ref().parse::<Ipv4Addr>().is_ok()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_is_ipv4() {
assert_eq!(true, is_ipv4("127.0.0.1"));
assert_eq!(false, is_ipv4(""));
assert_eq!(false, is_ipv4("::0:0:0:0:0:0:1"));
assert_eq!(false, is_ipv4("127.0.0.1.1"));
assert_eq!(false, is_ipv4("256.0.0.1"));
assert_eq!(false, is_ipv4("127.0.0.a"));
}
}