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| -rw-r--r-- | ip.pl | 51 |
1 files changed, 51 insertions, 0 deletions
@@ -0,0 +1,51 @@ +% vim: syntax=prolog + +:- use_module(library(clpfd)). +:- use_module(library(dcg/basics)). + +ip4(A, B, C, D, Addr) :- + A in 0..255, + B in 0..255, + C in 0..255, + D in 0..255, + Addr #= (A * 2^24 + B * 2^16 + C * 2^8 + D). + +ip4_range(ip4(_, _, _, _), Range) :- + Range in 0..32. + +ip_format(ip4(A, B, C, D, _), Str) :- + format(string(Str), "~w.~w.~w.~w", [A, B, C, D]). + +ip_format(ip4_range(ip4(A, B, C, D, _), Range), Str) :- + format(string(Str), "~w.~w.~w.~w/~w", [A, B, C, D, Range]). + +ip4_g(A, B, C, D) --> ip4_num(A), ".", ip4_num(B), ".", ip4_num(C), ".", ip4_num(D). +ip4_num(D) --> integer(D), { D >= 0, D =< 255 }. +ipx(A) --> integer(A). + +ip_parse(Str, Obj) :- + string_codes(Str, Codes), + phrase(ip4_g(A, B, C, D), Codes), + Obj = ip4(A, B, C, D). + +:- begin_tests(lists). +:- use_module(library(lists)). + +test(ip4) :- + ip4(127, 0, 0, 1, A), + assertion(A =:= (127 * 2**24 + 1)). + +test(ip_format) :- + ip_format(ip4(127, 0, 0, 1, _), Str), + assertion(Str == "127.0.0.1"). + +test(ip_format) :- + Ip = ip4_range(ip4(192, 168, 0, 0, _), 24), + ip_format(Ip, Str), + assertion(Str == "192.168.0.0/24"). + +test(ip_parse) :- + ip_parse("1.2.3.4", Ip), + assertion(Ip == ip4(1, 2, 3, 4)). + +:- end_tests(lists). |