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- "use strict";
- var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
- if (k2 === undefined) k2 = k;
- var desc = Object.getOwnPropertyDescriptor(m, k);
- if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
- desc = { enumerable: true, get: function() { return m[k]; } };
- }
- Object.defineProperty(o, k2, desc);
- }) : (function(o, m, k, k2) {
- if (k2 === undefined) k2 = k;
- o[k2] = m[k];
- }));
- var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
- Object.defineProperty(o, "default", { enumerable: true, value: v });
- }) : function(o, v) {
- o["default"] = v;
- });
- var __importStar = (this && this.__importStar) || function (mod) {
- if (mod && mod.__esModule) return mod;
- var result = {};
- if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
- __setModuleDefault(result, mod);
- return result;
- };
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.possibleElisions = exports.simpleRegularExpression = exports.ADDRESS_BOUNDARY = exports.padGroup = exports.groupPossibilities = void 0;
- const v6 = __importStar(require("./constants"));
- const sprintf_js_1 = require("sprintf-js");
- function groupPossibilities(possibilities) {
- return (0, sprintf_js_1.sprintf)('(%s)', possibilities.join('|'));
- }
- exports.groupPossibilities = groupPossibilities;
- function padGroup(group) {
- if (group.length < 4) {
- return (0, sprintf_js_1.sprintf)('0{0,%d}%s', 4 - group.length, group);
- }
- return group;
- }
- exports.padGroup = padGroup;
- exports.ADDRESS_BOUNDARY = '[^A-Fa-f0-9:]';
- function simpleRegularExpression(groups) {
- const zeroIndexes = [];
- groups.forEach((group, i) => {
- const groupInteger = parseInt(group, 16);
- if (groupInteger === 0) {
- zeroIndexes.push(i);
- }
- });
- // You can technically elide a single 0, this creates the regular expressions
- // to match that eventuality
- const possibilities = zeroIndexes.map((zeroIndex) => groups
- .map((group, i) => {
- if (i === zeroIndex) {
- const elision = i === 0 || i === v6.GROUPS - 1 ? ':' : '';
- return groupPossibilities([padGroup(group), elision]);
- }
- return padGroup(group);
- })
- .join(':'));
- // The simplest case
- possibilities.push(groups.map(padGroup).join(':'));
- return groupPossibilities(possibilities);
- }
- exports.simpleRegularExpression = simpleRegularExpression;
- function possibleElisions(elidedGroups, moreLeft, moreRight) {
- const left = moreLeft ? '' : ':';
- const right = moreRight ? '' : ':';
- const possibilities = [];
- // 1. elision of everything (::)
- if (!moreLeft && !moreRight) {
- possibilities.push('::');
- }
- // 2. complete elision of the middle
- if (moreLeft && moreRight) {
- possibilities.push('');
- }
- if ((moreRight && !moreLeft) || (!moreRight && moreLeft)) {
- // 3. complete elision of one side
- possibilities.push(':');
- }
- // 4. elision from the left side
- possibilities.push((0, sprintf_js_1.sprintf)('%s(:0{1,4}){1,%d}', left, elidedGroups - 1));
- // 5. elision from the right side
- possibilities.push((0, sprintf_js_1.sprintf)('(0{1,4}:){1,%d}%s', elidedGroups - 1, right));
- // 6. no elision
- possibilities.push((0, sprintf_js_1.sprintf)('(0{1,4}:){%d}0{1,4}', elidedGroups - 1));
- // 7. elision (including sloppy elision) from the middle
- for (let groups = 1; groups < elidedGroups - 1; groups++) {
- for (let position = 1; position < elidedGroups - groups; position++) {
- possibilities.push((0, sprintf_js_1.sprintf)('(0{1,4}:){%d}:(0{1,4}:){%d}0{1,4}', position, elidedGroups - position - groups - 1));
- }
- }
- return groupPossibilities(possibilities);
- }
- exports.possibleElisions = possibleElisions;
- //# sourceMappingURL=regular-expressions.js.map
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