INNER CODE UNIT · Rust

is_mac_addr

pythops/bluetui · src/bluetooth.rs:150

fn is_mac_addr(s: &str) -> bool {
    if s.len() != 17 {
        return false;
    }
    let mut chars = s.chars();
    for _ in 0..5 {
        // Matches [A-Fa-f0-9][A-Fa-f0-9]-
        if !(matches!(chars.next(), Some(c) if c.is_ascii_hexdigit())
            && matches!(chars.next(), Some(c) if c.is_ascii_hexdigit())
            && matches!(chars.next(), Some('-')))
        {
            return false;
        }
    }
    // Matches [A-Fa-f0-9][A-Fa-f0-9]$
    matches!(chars.next(), Some(c) if c.is_ascii_hexdigit())
        && matches!(chars.next(), Some(c) if c.is_ascii_hexdigit())
        && chars.next().is_none()

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