31 lines
698 B
Rust
31 lines
698 B
Rust
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import str;
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import ivec;
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import uint;
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tag ip_addr {
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ipv4(u8, u8, u8, u8);
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}
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fn format_addr(ip : ip_addr) -> str {
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alt(ip) {
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ipv4(a, b, c, d) {
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#fmt("%u.%u.%u.%u",
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a as uint,
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b as uint,
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c as uint,
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d as uint)
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}
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_ { fail "Unsupported address type"; }
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}
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}
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fn parse_addr(ip : str) -> ip_addr {
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let parts = ivec::map(uint::from_str, str::split(ip, ".".(0)));
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if ivec::len(parts) != 4u { fail "Too many dots in IP address"; }
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for i in parts { if i > 255u { fail "Invalid IP Address part."; } }
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ipv4(parts.(0) as u8,
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parts.(1) as u8,
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parts.(2) as u8,
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parts.(3) as u8)
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}
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