vue hello world项目
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3 years ago
'use strict';
const Assert = require('@hapi/hoek/lib/assert');
const Uri = require('./uri');
const internals = {};
exports.regex = function (options = {}) {
// CIDR
Assert(options.cidr === undefined || typeof options.cidr === 'string', 'options.cidr must be a string');
const cidr = options.cidr ? options.cidr.toLowerCase() : 'optional';
Assert(['required', 'optional', 'forbidden'].includes(cidr), 'options.cidr must be one of required, optional, forbidden');
// Versions
Assert(options.version === undefined || typeof options.version === 'string' || Array.isArray(options.version), 'options.version must be a string or an array of string');
let versions = options.version || ['ipv4', 'ipv6', 'ipvfuture'];
if (!Array.isArray(versions)) {
versions = [versions];
}
Assert(versions.length >= 1, 'options.version must have at least 1 version specified');
for (let i = 0; i < versions.length; ++i) {
Assert(typeof versions[i] === 'string', 'options.version must only contain strings');
versions[i] = versions[i].toLowerCase();
Assert(['ipv4', 'ipv6', 'ipvfuture'].includes(versions[i]), 'options.version contains unknown version ' + versions[i] + ' - must be one of ipv4, ipv6, ipvfuture');
}
versions = Array.from(new Set(versions));
// Regex
const parts = versions.map((version) => {
// Forbidden
if (cidr === 'forbidden') {
return Uri.ip[version];
}
// Required
const cidrpart = `\\/${version === 'ipv4' ? Uri.ip.v4Cidr : Uri.ip.v6Cidr}`;
if (cidr === 'required') {
return `${Uri.ip[version]}${cidrpart}`;
}
// Optional
return `${Uri.ip[version]}(?:${cidrpart})?`;
});
const raw = `(?:${parts.join('|')})`;
const regex = new RegExp(`^${raw}$`);
return { cidr, versions, regex, raw };
};