73 lines
3.0 KiB
TypeScript
73 lines
3.0 KiB
TypeScript
// https://github.com/kevva/url-regex/blob/master/index.js
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let urlReg: RegExp;
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export default () => {
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if (urlReg) {
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return urlReg;
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}
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const word = '[a-fA-F\\d:]';
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const b = options =>
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options && options.includeBoundaries
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? `(?:(?<=\\s|^)(?=${word})|(?<=${word})(?=\\s|$))`
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: '';
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const v4 =
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'(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)(?:\\.(?:25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)){3}';
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const v6seg = '[a-fA-F\\d]{1,4}';
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const v6 = `
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(?:
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(?:${v6seg}:){7}(?:${v6seg}|:)| // 1:2:3:4:5:6:7:: 1:2:3:4:5:6:7:8
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(?:${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
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(?:${v6seg}:){5}(?::${v4}|(?::${v6seg}){1,2}|:)| // 1:2:3:4:5:: 1:2:3:4:5::7:8 1:2:3:4:5::8 1:2:3:4:5::7:1.2.3.4
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(?:${v6seg}:){4}(?:(?::${v6seg}){0,1}:${v4}|(?::${v6seg}){1,3}|:)| // 1:2:3:4:: 1:2:3:4::6:7:8 1:2:3:4::8 1:2:3:4::6:7:1.2.3.4
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(?:${v6seg}:){3}(?:(?::${v6seg}){0,2}:${v4}|(?::${v6seg}){1,4}|:)| // 1:2:3:: 1:2:3::5:6:7:8 1:2:3::8 1:2:3::5:6:7:1.2.3.4
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(?:${v6seg}:){2}(?:(?::${v6seg}){0,3}:${v4}|(?::${v6seg}){1,5}|:)| // 1:2:: 1:2::4:5:6:7:8 1:2::8 1:2::4:5:6:7:1.2.3.4
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(?:${v6seg}:){1}(?:(?::${v6seg}){0,4}:${v4}|(?::${v6seg}){1,6}|:)| // 1:: 1::3:4:5:6:7:8 1::8 1::3:4:5:6:7:1.2.3.4
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(?::(?:(?::${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
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)(?:%[0-9a-zA-Z]{1,})? // %eth0 %1
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`
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.replace(/\s*\/\/.*$/gm, '')
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.replace(/\n/g, '')
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.trim();
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// Pre-compile only the exact regexes because adding a global flag make regexes stateful
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const v46Exact = new RegExp(`(?:^${v4}$)|(?:^${v6}$)`);
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const v4exact = new RegExp(`^${v4}$`);
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const v6exact = new RegExp(`^${v6}$`);
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const ip = options =>
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options && options.exact
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? v46Exact
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: new RegExp(
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`(?:${b(options)}${v4}${b(options)})|(?:${b(options)}${v6}${b(
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options,
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)})`,
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'g',
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);
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ip.v4 = (options?) =>
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options && options.exact
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? v4exact
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: new RegExp(`${b(options)}${v4}${b(options)}`, 'g');
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ip.v6 = (options?) =>
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options && options.exact
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? v6exact
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: new RegExp(`${b(options)}${v6}${b(options)}`, 'g');
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const protocol = `(?:(?:[a-z]+:)?//)`;
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const auth = '(?:\\S+(?::\\S*)?@)?';
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const ipv4 = ip.v4().source;
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const ipv6 = ip.v6().source;
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const host = '(?:(?:[a-z\\u00a1-\\uffff0-9][-_]*)*[a-z\\u00a1-\\uffff0-9]+)';
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const domain =
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'(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*';
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const tld = `(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))`;
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const port = '(?::\\d{2,5})?';
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const path = '(?:[/?#][^\\s"]*)?';
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const regex = `(?:${protocol}|www\\.)${auth}(?:localhost|${ipv4}|${ipv6}|${host}${domain}${tld})${port}${path}`;
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urlReg = new RegExp(`(?:^${regex}$)`, 'i');
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return urlReg;
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};
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