1 | const word = '[a-fA-F\\d:]';
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2 |
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3 | const boundry = options => options && options.includeBoundaries
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4 | ? `(?:(?<=\\s|^)(?=${word})|(?<=${word})(?=\\s|$))`
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5 | : '';
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6 |
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7 | const v4 = '(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)(?:\\.(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)){3}';
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8 |
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9 | const v6segment = '[a-fA-F\\d]{1,4}';
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10 |
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11 | const v6 = `
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12 | (?:
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13 | (?:${v6segment}:){7}(?:${v6segment}|:)| // 1:2:3:4:5:6:7:: 1:2:3:4:5:6:7:8
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14 | (?:${v6segment}:){6}(?:${v4}|:${v6segment}|:)| // 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
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15 | (?:${v6segment}:){5}(?::${v4}|(?::${v6segment}){1,2}|:)| // 1:2:3:4:5:: 1:2:3:4:5::7:8 1:2:3:4:5::8 1:2:3:4:5::7:1.2.3.4
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16 | (?:${v6segment}:){4}(?:(?::${v6segment}){0,1}:${v4}|(?::${v6segment}){1,3}|:)| // 1:2:3:4:: 1:2:3:4::6:7:8 1:2:3:4::8 1:2:3:4::6:7:1.2.3.4
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17 | (?:${v6segment}:){3}(?:(?::${v6segment}){0,2}:${v4}|(?::${v6segment}){1,4}|:)| // 1:2:3:: 1:2:3::5:6:7:8 1:2:3::8 1:2:3::5:6:7:1.2.3.4
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18 | (?:${v6segment}:){2}(?:(?::${v6segment}){0,3}:${v4}|(?::${v6segment}){1,5}|:)| // 1:2:: 1:2::4:5:6:7:8 1:2::8 1:2::4:5:6:7:1.2.3.4
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19 | (?:${v6segment}:){1}(?:(?::${v6segment}){0,4}:${v4}|(?::${v6segment}){1,6}|:)| // 1:: 1::3:4:5:6:7:8 1::8 1::3:4:5:6:7:1.2.3.4
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20 | (?::(?:(?::${v6segment}){0,5}:${v4}|(?::${v6segment}){1,7}|:)) // ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::1.2.3.4
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21 | )(?:%[0-9a-zA-Z]{1,})? // %eth0 %1
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22 | `.replace(/\s*\/\/.*$/gm, '').replace(/\n/g, '').trim();
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23 |
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24 |
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25 | const v46Exact = new RegExp(`(?:^${v4}$)|(?:^${v6}$)`);
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26 | const v4exact = new RegExp(`^${v4}$`);
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27 | const v6exact = new RegExp(`^${v6}$`);
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28 |
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29 | const ipRegex = options => options && options.exact
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30 | ? v46Exact
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31 | : new RegExp(`(?:${boundry(options)}${v4}${boundry(options)})|(?:${boundry(options)}${v6}${boundry(options)})`, 'g');
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32 |
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33 | ipRegex.v4 = options => options && options.exact ? v4exact : new RegExp(`${boundry(options)}${v4}${boundry(options)}`, 'g');
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34 | ipRegex.v6 = options => options && options.exact ? v6exact : new RegExp(`${boundry(options)}${v6}${boundry(options)}`, 'g');
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35 |
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36 | export default ipRegex;
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