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import vec;
import uint;
#[doc = "An IP address"]
enum ip_addr {
/*
Variant: ipv4
An IPv4 address
*/
ipv4(u8, u8, u8, u8),
}
#[doc = "Convert an `ip_addr` to a str"]
fn format_addr(ip: ip_addr) -> str {
alt ip {
ipv4(a, b, c, d) {
#fmt["%u.%u.%u.%u", a as uint, b as uint, c as uint, d as uint]
}
_ { fail "Unsupported address type"; }
}
}
#[doc = "
Convert a str to `ip_addr`
Converts a string of the format `x.x.x.x` into an ip_addr enum.
Fails if the string is not a valid IPv4 address
"]
fn parse_addr(ip: str) -> ip_addr {
let parts = vec::map(str::split_char(ip, '.'), {|s|
alt uint::from_str(s) {
some(n) if n <= 255u { n }
_ { fail "Invalid IP Address part." }
}
});
if vec::len(parts) != 4u { fail "Too many dots in IP address"; }
ipv4(parts[0] as u8, parts[1] as u8, parts[2] as u8, parts[3] as u8)
}
#[test]
fn test_format_ip() {
assert (net::format_addr(net::ipv4(127u8, 0u8, 0u8, 1u8)) == "127.0.0.1")
}
#[test]
fn test_parse_ip() {
assert (net::parse_addr("127.0.0.1") == net::ipv4(127u8, 0u8, 0u8, 1u8));
}
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