1'use strict'; 2 3const word = '[a-fA-F\\d:]'; 4const b = options => options && options.includeBoundaries ? 5 `(?:(?<=\\s|^)(?=${word})|(?<=${word})(?=\\s|$))` : 6 ''; 7 8const v4 = '(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)(?:\\.(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)){3}'; 9 10const v6seg = '[a-fA-F\\d]{1,4}'; 11const v6 = ` 12(?: 13(?:${v6seg}:){7}(?:${v6seg}|:)| // 1:2:3:4:5:6:7:: 1:2:3:4:5:6:7:8 14(?:${v6seg}:){6}(?:${v4}|:${v6seg}|:)| // 1:2:3:4:5:6:: 1:2:3:4:5:6::8 1:2:3:4:5:6::8 1:2:3:4:5:6::1.2.3.4 15(?:${v6seg}:){5}(?::${v4}|(?::${v6seg}){1,2}|:)| // 1:2:3:4:5:: 1:2:3:4:5::7:8 1:2:3:4:5::8 1:2:3:4:5::7:1.2.3.4 16(?:${v6seg}:){4}(?:(?::${v6seg}){0,1}:${v4}|(?::${v6seg}){1,3}|:)| // 1:2:3:4:: 1:2:3:4::6:7:8 1:2:3:4::8 1:2:3:4::6:7:1.2.3.4 17(?:${v6seg}:){3}(?:(?::${v6seg}){0,2}:${v4}|(?::${v6seg}){1,4}|:)| // 1:2:3:: 1:2:3::5:6:7:8 1:2:3::8 1:2:3::5:6:7:1.2.3.4 18(?:${v6seg}:){2}(?:(?::${v6seg}){0,3}:${v4}|(?::${v6seg}){1,5}|:)| // 1:2:: 1:2::4:5:6:7:8 1:2::8 1:2::4:5:6:7:1.2.3.4 19(?:${v6seg}:){1}(?:(?::${v6seg}){0,4}:${v4}|(?::${v6seg}){1,6}|:)| // 1:: 1::3:4:5:6:7:8 1::8 1::3:4:5:6:7:1.2.3.4 20(?::(?:(?::${v6seg}){0,5}:${v4}|(?::${v6seg}){1,7}|:)) // ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::1.2.3.4 21)(?:%[0-9a-zA-Z]{1,})? // %eth0 %1 22`.replace(/\s*\/\/.*$/gm, '').replace(/\n/g, '').trim(); 23 24// Pre-compile only the exact regexes because adding a global flag make regexes stateful 25const v46Exact = new RegExp(`(?:^${v4}$)|(?:^${v6}$)`); 26const v4exact = new RegExp(`^${v4}$`); 27const v6exact = new RegExp(`^${v6}$`); 28 29const ip = options => options && options.exact ? 30 v46Exact : 31 new RegExp(`(?:${b(options)}${v4}${b(options)})|(?:${b(options)}${v6}${b(options)})`, 'g'); 32 33ip.v4 = options => options && options.exact ? v4exact : new RegExp(`${b(options)}${v4}${b(options)}`, 'g'); 34ip.v6 = options => options && options.exact ? v6exact : new RegExp(`${b(options)}${v6}${b(options)}`, 'g'); 35 36module.exports = ip; 37