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Remco
2036 lines
91 KiB
JavaScript
2036 lines
91 KiB
JavaScript
"use strict";
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var _sliceInstanceProperty2 = require("@babel/runtime-corejs3/core-js-stable/instance/slice");
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var _Array$from = require("@babel/runtime-corejs3/core-js-stable/array/from");
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var _Symbol = require("@babel/runtime-corejs3/core-js-stable/symbol");
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var _getIteratorMethod = require("@babel/runtime-corejs3/core-js/get-iterator-method");
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var _Array$isArray = require("@babel/runtime-corejs3/core-js-stable/array/is-array");
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var _Object$defineProperty = require("@babel/runtime-corejs3/core-js-stable/object/define-property");
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var _interopRequireDefault = require("@babel/runtime-corejs3/helpers/interopRequireDefault");
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_Object$defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = void 0;
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var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime-corejs3/helpers/slicedToArray"));
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var _flags = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/flags"));
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var _sort = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/sort"));
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var _slice = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/slice"));
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var _parseInt2 = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/parse-int"));
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var _indexOf = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/index-of"));
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var _forEach = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/for-each"));
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var _create = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/object/create"));
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var _concat = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/concat"));
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function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof _Symbol !== "undefined" && _getIteratorMethod(o) || o["@@iterator"]; if (!it) { if (_Array$isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
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function _unsupportedIterableToArray(o, minLen) { var _context9; if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = _sliceInstanceProperty2(_context9 = Object.prototype.toString.call(o)).call(_context9, 8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return _Array$from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
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/*!
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* XRegExp 5.1.1
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* <xregexp.com>
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* Steven Levithan (c) 2007-present MIT License
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*/
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/**
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* XRegExp provides augmented, extensible regular expressions. You get additional regex syntax and
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* flags, beyond what browsers support natively. XRegExp is also a regex utility belt with tools to
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* make your client-side grepping simpler and more powerful, while freeing you from related
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* cross-browser inconsistencies.
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*/
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// ==--------------------------==
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// Private stuff
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// ==--------------------------==
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// Property name used for extended regex instance data
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var REGEX_DATA = 'xregexp'; // Optional features that can be installed and uninstalled
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var features = {
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astral: false,
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namespacing: true
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}; // Storage for fixed/extended native methods
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var fixed = {}; // Storage for regexes cached by `XRegExp.cache`
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var regexCache = {}; // Storage for pattern details cached by the `XRegExp` constructor
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var patternCache = {}; // Storage for regex syntax tokens added internally or by `XRegExp.addToken`
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var tokens = []; // Token scopes
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var defaultScope = 'default';
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var classScope = 'class'; // Regexes that match native regex syntax, including octals
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var nativeTokens = {
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// Any native multicharacter token in default scope, or any single character
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'default': /\\(?:0(?:[0-3][0-7]{0,2}|[4-7][0-7]?)?|[1-9]\d*|x[\dA-Fa-f]{2}|u(?:[\dA-Fa-f]{4}|{[\dA-Fa-f]+})|c[A-Za-z]|[\s\S])|\(\?(?:[:=!]|<[=!])|[?*+]\?|{\d+(?:,\d*)?}\??|[\s\S]/,
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// Any native multicharacter token in character class scope, or any single character
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'class': /\\(?:[0-3][0-7]{0,2}|[4-7][0-7]?|x[\dA-Fa-f]{2}|u(?:[\dA-Fa-f]{4}|{[\dA-Fa-f]+})|c[A-Za-z]|[\s\S])|[\s\S]/
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}; // Any backreference or dollar-prefixed character in replacement strings
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var replacementToken = /\$(?:\{([^\}]+)\}|<([^>]+)>|(\d\d?|[\s\S]?))/g; // Check for correct `exec` handling of nonparticipating capturing groups
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var correctExecNpcg = /()??/.exec('')[1] === undefined; // Check for ES6 `flags` prop support
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var hasFlagsProp = (0, _flags["default"])(/x/) !== undefined;
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function hasNativeFlag(flag) {
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// Can't check based on the presence of properties/getters since browsers might support such
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// properties even when they don't support the corresponding flag in regex construction (tested
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// in Chrome 48, where `'unicode' in /x/` is true but trying to construct a regex with flag `u`
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// throws an error)
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var isSupported = true;
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try {
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// Can't use regex literals for testing even in a `try` because regex literals with
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// unsupported flags cause a compilation error in IE
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new RegExp('', flag); // Work around a broken/incomplete IE11 polyfill for sticky introduced in core-js 3.6.0
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if (flag === 'y') {
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// Using function to avoid babel transform to regex literal
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var gy = function () {
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return 'gy';
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}();
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var incompleteY = '.a'.replace(new RegExp('a', gy), '.') === '..';
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if (incompleteY) {
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isSupported = false;
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}
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}
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} catch (exception) {
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isSupported = false;
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}
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return isSupported;
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} // Check for ES2021 `d` flag support
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var hasNativeD = hasNativeFlag('d'); // Check for ES2018 `s` flag support
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var hasNativeS = hasNativeFlag('s'); // Check for ES6 `u` flag support
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var hasNativeU = hasNativeFlag('u'); // Check for ES6 `y` flag support
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var hasNativeY = hasNativeFlag('y'); // Tracker for known flags, including addon flags
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var registeredFlags = {
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d: hasNativeD,
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g: true,
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i: true,
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m: true,
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s: hasNativeS,
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u: hasNativeU,
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y: hasNativeY
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}; // Flags to remove when passing to native `RegExp` constructor
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var nonnativeFlags = hasNativeS ? /[^dgimsuy]+/g : /[^dgimuy]+/g;
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/**
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* Attaches extended data and `XRegExp.prototype` properties to a regex object.
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*
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* @private
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* @param {RegExp} regex Regex to augment.
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* @param {Array} captureNames Array with capture names, or `null`.
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* @param {String} xSource XRegExp pattern used to generate `regex`, or `null` if N/A.
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* @param {String} xFlags XRegExp flags used to generate `regex`, or `null` if N/A.
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* @param {Boolean} [isInternalOnly=false] Whether the regex will be used only for internal
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* operations, and never exposed to users. For internal-only regexes, we can improve perf by
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* skipping some operations like attaching `XRegExp.prototype` properties.
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* @returns {!RegExp} Augmented regex.
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*/
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function augment(regex, captureNames, xSource, xFlags, isInternalOnly) {
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var _context;
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regex[REGEX_DATA] = {
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captureNames: captureNames
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};
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if (isInternalOnly) {
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return regex;
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} // Can't auto-inherit these since the XRegExp constructor returns a nonprimitive value
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if (regex.__proto__) {
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regex.__proto__ = XRegExp.prototype;
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} else {
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for (var p in XRegExp.prototype) {
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// An `XRegExp.prototype.hasOwnProperty(p)` check wouldn't be worth it here, since this
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// is performance sensitive, and enumerable `Object.prototype` or `RegExp.prototype`
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// extensions exist on `regex.prototype` anyway
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regex[p] = XRegExp.prototype[p];
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}
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}
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regex[REGEX_DATA].source = xSource; // Emulate the ES6 `flags` prop by ensuring flags are in alphabetical order
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regex[REGEX_DATA].flags = xFlags ? (0, _sort["default"])(_context = xFlags.split('')).call(_context).join('') : xFlags;
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return regex;
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}
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/**
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* Removes any duplicate characters from the provided string.
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*
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* @private
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* @param {String} str String to remove duplicate characters from.
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* @returns {string} String with any duplicate characters removed.
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*/
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function clipDuplicates(str) {
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return str.replace(/([\s\S])(?=[\s\S]*\1)/g, '');
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}
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/**
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* Copies a regex object while preserving extended data and augmenting with `XRegExp.prototype`
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* properties. The copy has a fresh `lastIndex` property (set to zero). Allows adding and removing
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* flags g and y while copying the regex.
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*
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* @private
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* @param {RegExp} regex Regex to copy.
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* @param {Object} [options] Options object with optional properties:
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* - `addG` {Boolean} Add flag g while copying the regex.
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* - `addY` {Boolean} Add flag y while copying the regex.
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* - `removeG` {Boolean} Remove flag g while copying the regex.
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* - `removeY` {Boolean} Remove flag y while copying the regex.
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* - `isInternalOnly` {Boolean} Whether the copied regex will be used only for internal
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* operations, and never exposed to users. For internal-only regexes, we can improve perf by
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* skipping some operations like attaching `XRegExp.prototype` properties.
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* - `source` {String} Overrides `<regex>.source`, for special cases.
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* @returns {RegExp} Copy of the provided regex, possibly with modified flags.
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*/
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function copyRegex(regex, options) {
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var _context2;
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if (!XRegExp.isRegExp(regex)) {
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throw new TypeError('Type RegExp expected');
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}
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var xData = regex[REGEX_DATA] || {};
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var flags = getNativeFlags(regex);
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var flagsToAdd = '';
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var flagsToRemove = '';
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var xregexpSource = null;
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var xregexpFlags = null;
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options = options || {};
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if (options.removeG) {
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flagsToRemove += 'g';
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}
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if (options.removeY) {
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flagsToRemove += 'y';
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}
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if (flagsToRemove) {
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flags = flags.replace(new RegExp("[".concat(flagsToRemove, "]+"), 'g'), '');
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}
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if (options.addG) {
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flagsToAdd += 'g';
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}
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if (options.addY) {
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flagsToAdd += 'y';
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}
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if (flagsToAdd) {
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flags = clipDuplicates(flags + flagsToAdd);
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}
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if (!options.isInternalOnly) {
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if (xData.source !== undefined) {
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xregexpSource = xData.source;
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} // null or undefined; don't want to add to `flags` if the previous value was null, since
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// that indicates we're not tracking original precompilation flags
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if ((0, _flags["default"])(xData) != null) {
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// Flags are only added for non-internal regexes by `XRegExp.globalize`. Flags are never
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// removed for non-internal regexes, so don't need to handle it
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xregexpFlags = flagsToAdd ? clipDuplicates((0, _flags["default"])(xData) + flagsToAdd) : (0, _flags["default"])(xData);
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}
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} // Augment with `XRegExp.prototype` properties, but use the native `RegExp` constructor to avoid
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// searching for special tokens. That would be wrong for regexes constructed by `RegExp`, and
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// unnecessary for regexes constructed by `XRegExp` because the regex has already undergone the
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// translation to native regex syntax
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regex = augment(new RegExp(options.source || regex.source, flags), hasNamedCapture(regex) ? (0, _slice["default"])(_context2 = xData.captureNames).call(_context2, 0) : null, xregexpSource, xregexpFlags, options.isInternalOnly);
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return regex;
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}
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/**
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* Converts hexadecimal to decimal.
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*
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* @private
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* @param {String} hex
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* @returns {number}
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*/
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function dec(hex) {
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return (0, _parseInt2["default"])(hex, 16);
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}
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/**
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* Returns a pattern that can be used in a native RegExp in place of an ignorable token such as an
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* inline comment or whitespace with flag x. This is used directly as a token handler function
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* passed to `XRegExp.addToken`.
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*
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* @private
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* @param {String} match Match arg of `XRegExp.addToken` handler
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* @param {String} scope Scope arg of `XRegExp.addToken` handler
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* @param {String} flags Flags arg of `XRegExp.addToken` handler
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* @returns {string} Either '' or '(?:)', depending on which is needed in the context of the match.
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*/
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function getContextualTokenSeparator(match, scope, flags) {
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var matchEndPos = match.index + match[0].length;
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var precedingChar = match.input[match.index - 1];
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var followingChar = match.input[matchEndPos];
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if ( // No need to separate tokens if at the beginning or end of a group, before or after a
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// group, or before or after a `|`
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/^[()|]$/.test(precedingChar) || /^[()|]$/.test(followingChar) || // No need to separate tokens if at the beginning or end of the pattern
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match.index === 0 || matchEndPos === match.input.length || // No need to separate tokens if at the beginning of a noncapturing group or lookaround.
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// Looks only at the last 4 chars (at most) for perf when constructing long regexes.
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/\(\?(?:[:=!]|<[=!])$/.test(match.input.substring(match.index - 4, match.index)) || // Avoid separating tokens when the following token is a quantifier
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isQuantifierNext(match.input, matchEndPos, flags)) {
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return '';
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} // Keep tokens separated. This avoids e.g. inadvertedly changing `\1 1` or `\1(?#)1` to `\11`.
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// This also ensures all tokens remain as discrete atoms, e.g. it prevents converting the
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// syntax error `(? :` into `(?:`.
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return '(?:)';
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}
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/**
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* Returns native `RegExp` flags used by a regex object.
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*
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* @private
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* @param {RegExp} regex Regex to check.
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* @returns {string} Native flags in use.
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*/
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function getNativeFlags(regex) {
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return hasFlagsProp ? (0, _flags["default"])(regex) : // Explicitly using `RegExp.prototype.toString` (rather than e.g. `String` or concatenation
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// with an empty string) allows this to continue working predictably when
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// `XRegExp.proptotype.toString` is overridden
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/\/([a-z]*)$/i.exec(RegExp.prototype.toString.call(regex))[1];
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}
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/**
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* Determines whether a regex has extended instance data used to track capture names.
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*
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* @private
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* @param {RegExp} regex Regex to check.
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* @returns {boolean} Whether the regex uses named capture.
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*/
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function hasNamedCapture(regex) {
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return !!(regex[REGEX_DATA] && regex[REGEX_DATA].captureNames);
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}
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/**
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* Converts decimal to hexadecimal.
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*
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* @private
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* @param {Number|String} dec
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* @returns {string}
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*/
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function hex(dec) {
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return (0, _parseInt2["default"])(dec, 10).toString(16);
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}
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/**
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* Checks whether the next nonignorable token after the specified position is a quantifier.
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*
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* @private
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* @param {String} pattern Pattern to search within.
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* @param {Number} pos Index in `pattern` to search at.
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* @param {String} flags Flags used by the pattern.
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* @returns {Boolean} Whether the next nonignorable token is a quantifier.
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*/
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function isQuantifierNext(pattern, pos, flags) {
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var inlineCommentPattern = '\\(\\?#[^)]*\\)';
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var lineCommentPattern = '#[^#\\n]*';
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var quantifierPattern = '[?*+]|{\\d+(?:,\\d*)?}';
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var regex = (0, _indexOf["default"])(flags).call(flags, 'x') !== -1 ? // Ignore any leading whitespace, line comments, and inline comments
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/^(?:\s|#[^#\n]*|\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/ : // Ignore any leading inline comments
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/^(?:\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/;
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return regex.test((0, _slice["default"])(pattern).call(pattern, pos));
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}
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/**
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* Determines whether a value is of the specified type, by resolving its internal [[Class]].
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*
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* @private
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* @param {*} value Object to check.
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* @param {String} type Type to check for, in TitleCase.
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* @returns {boolean} Whether the object matches the type.
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*/
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function isType(value, type) {
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return Object.prototype.toString.call(value) === "[object ".concat(type, "]");
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}
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/**
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* Returns the object, or throws an error if it is `null` or `undefined`. This is used to follow
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* the ES5 abstract operation `ToObject`.
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*
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* @private
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* @param {*} value Object to check and return.
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* @returns {*} The provided object.
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*/
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function nullThrows(value) {
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// null or undefined
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if (value == null) {
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throw new TypeError('Cannot convert null or undefined to object');
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}
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return value;
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}
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/**
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* Adds leading zeros if shorter than four characters. Used for fixed-length hexadecimal values.
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*
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* @private
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* @param {String} str
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* @returns {string}
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*/
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function pad4(str) {
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while (str.length < 4) {
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str = "0".concat(str);
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}
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return str;
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}
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/**
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* Checks for flag-related errors, and strips/applies flags in a leading mode modifier. Offloads
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* the flag preparation logic from the `XRegExp` constructor.
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*
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* @private
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* @param {String} pattern Regex pattern, possibly with a leading mode modifier.
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* @param {String} flags Any combination of flags.
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* @returns {!Object} Object with properties `pattern` and `flags`.
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*/
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|
|
function prepareFlags(pattern, flags) {
|
|
// Recent browsers throw on duplicate flags, so copy this behavior for nonnative flags
|
|
if (clipDuplicates(flags) !== flags) {
|
|
throw new SyntaxError("Invalid duplicate regex flag ".concat(flags));
|
|
} // Strip and apply a leading mode modifier with any combination of flags except `dgy`
|
|
|
|
|
|
pattern = pattern.replace(/^\(\?([\w$]+)\)/, function ($0, $1) {
|
|
if (/[dgy]/.test($1)) {
|
|
throw new SyntaxError("Cannot use flags dgy in mode modifier ".concat($0));
|
|
} // Allow duplicate flags within the mode modifier
|
|
|
|
|
|
flags = clipDuplicates(flags + $1);
|
|
return '';
|
|
}); // Throw on unknown native or nonnative flags
|
|
|
|
var _iterator = _createForOfIteratorHelper(flags),
|
|
_step;
|
|
|
|
try {
|
|
for (_iterator.s(); !(_step = _iterator.n()).done;) {
|
|
var flag = _step.value;
|
|
|
|
if (!registeredFlags[flag]) {
|
|
throw new SyntaxError("Unknown regex flag ".concat(flag));
|
|
}
|
|
}
|
|
} catch (err) {
|
|
_iterator.e(err);
|
|
} finally {
|
|
_iterator.f();
|
|
}
|
|
|
|
return {
|
|
pattern: pattern,
|
|
flags: flags
|
|
};
|
|
}
|
|
/**
|
|
* Prepares an options object from the given value.
|
|
*
|
|
* @private
|
|
* @param {String|Object} value Value to convert to an options object.
|
|
* @returns {Object} Options object.
|
|
*/
|
|
|
|
|
|
function prepareOptions(value) {
|
|
var options = {};
|
|
|
|
if (isType(value, 'String')) {
|
|
(0, _forEach["default"])(XRegExp).call(XRegExp, value, /[^\s,]+/, function (match) {
|
|
options[match] = true;
|
|
});
|
|
return options;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
/**
|
|
* Registers a flag so it doesn't throw an 'unknown flag' error.
|
|
*
|
|
* @private
|
|
* @param {String} flag Single-character flag to register.
|
|
*/
|
|
|
|
|
|
function registerFlag(flag) {
|
|
if (!/^[\w$]$/.test(flag)) {
|
|
throw new Error('Flag must be a single character A-Za-z0-9_$');
|
|
}
|
|
|
|
registeredFlags[flag] = true;
|
|
}
|
|
/**
|
|
* Runs built-in and custom regex syntax tokens in reverse insertion order at the specified
|
|
* position, until a match is found.
|
|
*
|
|
* @private
|
|
* @param {String} pattern Original pattern from which an XRegExp object is being built.
|
|
* @param {String} flags Flags being used to construct the regex.
|
|
* @param {Number} pos Position to search for tokens within `pattern`.
|
|
* @param {Number} scope Regex scope to apply: 'default' or 'class'.
|
|
* @param {Object} context Context object to use for token handler functions.
|
|
* @returns {Object} Object with properties `matchLength`, `output`, and `reparse`; or `null`.
|
|
*/
|
|
|
|
|
|
function runTokens(pattern, flags, pos, scope, context) {
|
|
var i = tokens.length;
|
|
var leadChar = pattern[pos];
|
|
var result = null;
|
|
var match;
|
|
var t; // Run in reverse insertion order
|
|
|
|
while (i--) {
|
|
t = tokens[i];
|
|
|
|
if (t.leadChar && t.leadChar !== leadChar || t.scope !== scope && t.scope !== 'all' || t.flag && !((0, _indexOf["default"])(flags).call(flags, t.flag) !== -1)) {
|
|
continue;
|
|
}
|
|
|
|
match = XRegExp.exec(pattern, t.regex, pos, 'sticky');
|
|
|
|
if (match) {
|
|
result = {
|
|
matchLength: match[0].length,
|
|
output: t.handler.call(context, match, scope, flags),
|
|
reparse: t.reparse
|
|
}; // Finished with token tests
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
/**
|
|
* Enables or disables implicit astral mode opt-in. When enabled, flag A is automatically added to
|
|
* all new regexes created by XRegExp. This causes an error to be thrown when creating regexes if
|
|
* the Unicode Base addon is not available, since flag A is registered by that addon.
|
|
*
|
|
* @private
|
|
* @param {Boolean} on `true` to enable; `false` to disable.
|
|
*/
|
|
|
|
|
|
function setAstral(on) {
|
|
features.astral = on;
|
|
}
|
|
/**
|
|
* Adds named capture groups to the `groups` property of match arrays. See here for details:
|
|
* https://github.com/tc39/proposal-regexp-named-groups
|
|
*
|
|
* @private
|
|
* @param {Boolean} on `true` to enable; `false` to disable.
|
|
*/
|
|
|
|
|
|
function setNamespacing(on) {
|
|
features.namespacing = on;
|
|
} // ==--------------------------==
|
|
// Constructor
|
|
// ==--------------------------==
|
|
|
|
/**
|
|
* Creates an extended regular expression object for matching text with a pattern. Differs from a
|
|
* native regular expression in that additional syntax and flags are supported. The returned object
|
|
* is in fact a native `RegExp` and works with all native methods.
|
|
*
|
|
* @class XRegExp
|
|
* @constructor
|
|
* @param {String|RegExp} pattern Regex pattern string, or an existing regex object to copy.
|
|
* @param {String} [flags] Any combination of flags.
|
|
* Native flags:
|
|
* - `d` - indices for capturing groups (ES2021)
|
|
* - `g` - global
|
|
* - `i` - ignore case
|
|
* - `m` - multiline anchors
|
|
* - `u` - unicode (ES6)
|
|
* - `y` - sticky (Firefox 3+, ES6)
|
|
* Additional XRegExp flags:
|
|
* - `n` - named capture only
|
|
* - `s` - dot matches all (aka singleline) - works even when not natively supported
|
|
* - `x` - free-spacing and line comments (aka extended)
|
|
* - `A` - 21-bit Unicode properties (aka astral) - requires the Unicode Base addon
|
|
* Flags cannot be provided when constructing one `RegExp` from another.
|
|
* @returns {RegExp} Extended regular expression object.
|
|
* @example
|
|
*
|
|
* // With named capture and flag x
|
|
* XRegExp(`(?<year> [0-9]{4} ) -? # year
|
|
* (?<month> [0-9]{2} ) -? # month
|
|
* (?<day> [0-9]{2} ) # day`, 'x');
|
|
*
|
|
* // Providing a regex object copies it. Native regexes are recompiled using native (not XRegExp)
|
|
* // syntax. Copies maintain extended data, are augmented with `XRegExp.prototype` properties, and
|
|
* // have fresh `lastIndex` properties (set to zero).
|
|
* XRegExp(/regex/);
|
|
*/
|
|
|
|
|
|
function XRegExp(pattern, flags) {
|
|
if (XRegExp.isRegExp(pattern)) {
|
|
if (flags !== undefined) {
|
|
throw new TypeError('Cannot supply flags when copying a RegExp');
|
|
}
|
|
|
|
return copyRegex(pattern);
|
|
} // Copy the argument behavior of `RegExp`
|
|
|
|
|
|
pattern = pattern === undefined ? '' : String(pattern);
|
|
flags = flags === undefined ? '' : String(flags);
|
|
|
|
if (XRegExp.isInstalled('astral') && !((0, _indexOf["default"])(flags).call(flags, 'A') !== -1)) {
|
|
// This causes an error to be thrown if the Unicode Base addon is not available
|
|
flags += 'A';
|
|
}
|
|
|
|
if (!patternCache[pattern]) {
|
|
patternCache[pattern] = {};
|
|
}
|
|
|
|
if (!patternCache[pattern][flags]) {
|
|
var context = {
|
|
hasNamedCapture: false,
|
|
captureNames: []
|
|
};
|
|
var scope = defaultScope;
|
|
var output = '';
|
|
var pos = 0;
|
|
var result; // Check for flag-related errors, and strip/apply flags in a leading mode modifier
|
|
|
|
var applied = prepareFlags(pattern, flags);
|
|
var appliedPattern = applied.pattern;
|
|
var appliedFlags = (0, _flags["default"])(applied); // Use XRegExp's tokens to translate the pattern to a native regex pattern.
|
|
// `appliedPattern.length` may change on each iteration if tokens use `reparse`
|
|
|
|
while (pos < appliedPattern.length) {
|
|
do {
|
|
// Check for custom tokens at the current position
|
|
result = runTokens(appliedPattern, appliedFlags, pos, scope, context); // If the matched token used the `reparse` option, splice its output into the
|
|
// pattern before running tokens again at the same position
|
|
|
|
if (result && result.reparse) {
|
|
appliedPattern = (0, _slice["default"])(appliedPattern).call(appliedPattern, 0, pos) + result.output + (0, _slice["default"])(appliedPattern).call(appliedPattern, pos + result.matchLength);
|
|
}
|
|
} while (result && result.reparse);
|
|
|
|
if (result) {
|
|
output += result.output;
|
|
pos += result.matchLength || 1;
|
|
} else {
|
|
// Get the native token at the current position
|
|
var _XRegExp$exec = XRegExp.exec(appliedPattern, nativeTokens[scope], pos, 'sticky'),
|
|
_XRegExp$exec2 = (0, _slicedToArray2["default"])(_XRegExp$exec, 1),
|
|
token = _XRegExp$exec2[0];
|
|
|
|
output += token;
|
|
pos += token.length;
|
|
|
|
if (token === '[' && scope === defaultScope) {
|
|
scope = classScope;
|
|
} else if (token === ']' && scope === classScope) {
|
|
scope = defaultScope;
|
|
}
|
|
}
|
|
}
|
|
|
|
patternCache[pattern][flags] = {
|
|
// Use basic cleanup to collapse repeated empty groups like `(?:)(?:)` to `(?:)`. Empty
|
|
// groups are sometimes inserted during regex transpilation in order to keep tokens
|
|
// separated. However, more than one empty group in a row is never needed.
|
|
pattern: output.replace(/(?:\(\?:\))+/g, '(?:)'),
|
|
// Strip all but native flags
|
|
flags: appliedFlags.replace(nonnativeFlags, ''),
|
|
// `context.captureNames` has an item for each capturing group, even if unnamed
|
|
captures: context.hasNamedCapture ? context.captureNames : null
|
|
};
|
|
}
|
|
|
|
var generated = patternCache[pattern][flags];
|
|
return augment(new RegExp(generated.pattern, (0, _flags["default"])(generated)), generated.captures, pattern, flags);
|
|
} // Add `RegExp.prototype` to the prototype chain
|
|
|
|
|
|
XRegExp.prototype = /(?:)/; // ==--------------------------==
|
|
// Public properties
|
|
// ==--------------------------==
|
|
|
|
/**
|
|
* The XRegExp version number as a string containing three dot-separated parts. For example,
|
|
* '2.0.0-beta-3'.
|
|
*
|
|
* @static
|
|
* @memberOf XRegExp
|
|
* @type String
|
|
*/
|
|
|
|
XRegExp.version = '5.1.1'; // ==--------------------------==
|
|
// Public methods
|
|
// ==--------------------------==
|
|
// Intentionally undocumented; used in tests and addons
|
|
|
|
XRegExp._clipDuplicates = clipDuplicates;
|
|
XRegExp._hasNativeFlag = hasNativeFlag;
|
|
XRegExp._dec = dec;
|
|
XRegExp._hex = hex;
|
|
XRegExp._pad4 = pad4;
|
|
/**
|
|
* Extends XRegExp syntax and allows custom flags. This is used internally and can be used to
|
|
* create XRegExp addons. If more than one token can match the same string, the last added wins.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {RegExp} regex Regex object that matches the new token.
|
|
* @param {Function} handler Function that returns a new pattern string (using native regex syntax)
|
|
* to replace the matched token within all future XRegExp regexes. Has access to persistent
|
|
* properties of the regex being built, through `this`. Invoked with three arguments:
|
|
* - The match array, with named backreference properties.
|
|
* - The regex scope where the match was found: 'default' or 'class'.
|
|
* - The flags used by the regex, including any flags in a leading mode modifier.
|
|
* The handler function becomes part of the XRegExp construction process, so be careful not to
|
|
* construct XRegExps within the function or you will trigger infinite recursion.
|
|
* @param {Object} [options] Options object with optional properties:
|
|
* - `scope` {String} Scope where the token applies: 'default', 'class', or 'all'.
|
|
* - `flag` {String} Single-character flag that triggers the token. This also registers the
|
|
* flag, which prevents XRegExp from throwing an 'unknown flag' error when the flag is used.
|
|
* - `optionalFlags` {String} Any custom flags checked for within the token `handler` that are
|
|
* not required to trigger the token. This registers the flags, to prevent XRegExp from
|
|
* throwing an 'unknown flag' error when any of the flags are used.
|
|
* - `reparse` {Boolean} Whether the `handler` function's output should not be treated as
|
|
* final, and instead be reparseable by other tokens (including the current token). Allows
|
|
* token chaining or deferring.
|
|
* - `leadChar` {String} Single character that occurs at the beginning of any successful match
|
|
* of the token (not always applicable). This doesn't change the behavior of the token unless
|
|
* you provide an erroneous value. However, providing it can increase the token's performance
|
|
* since the token can be skipped at any positions where this character doesn't appear.
|
|
* @example
|
|
*
|
|
* // Basic usage: Add \a for the ALERT control code
|
|
* XRegExp.addToken(
|
|
* /\\a/,
|
|
* () => '\\x07',
|
|
* {scope: 'all'}
|
|
* );
|
|
* XRegExp('\\a[\\a-\\n]+').test('\x07\n\x07'); // -> true
|
|
*
|
|
* // Add the U (ungreedy) flag from PCRE and RE2, which reverses greedy and lazy quantifiers.
|
|
* // Since `scope` is not specified, it uses 'default' (i.e., transformations apply outside of
|
|
* // character classes only)
|
|
* XRegExp.addToken(
|
|
* /([?*+]|{\d+(?:,\d*)?})(\??)/,
|
|
* (match) => `${match[1]}${match[2] ? '' : '?'}`,
|
|
* {flag: 'U'}
|
|
* );
|
|
* XRegExp('a+', 'U').exec('aaa')[0]; // -> 'a'
|
|
* XRegExp('a+?', 'U').exec('aaa')[0]; // -> 'aaa'
|
|
*/
|
|
|
|
XRegExp.addToken = function (regex, handler, options) {
|
|
options = options || {};
|
|
var _options = options,
|
|
optionalFlags = _options.optionalFlags;
|
|
|
|
if (options.flag) {
|
|
registerFlag(options.flag);
|
|
}
|
|
|
|
if (optionalFlags) {
|
|
optionalFlags = optionalFlags.split('');
|
|
|
|
var _iterator2 = _createForOfIteratorHelper(optionalFlags),
|
|
_step2;
|
|
|
|
try {
|
|
for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
|
|
var flag = _step2.value;
|
|
registerFlag(flag);
|
|
}
|
|
} catch (err) {
|
|
_iterator2.e(err);
|
|
} finally {
|
|
_iterator2.f();
|
|
}
|
|
} // Add to the private list of syntax tokens
|
|
|
|
|
|
tokens.push({
|
|
regex: copyRegex(regex, {
|
|
addG: true,
|
|
addY: hasNativeY,
|
|
isInternalOnly: true
|
|
}),
|
|
handler: handler,
|
|
scope: options.scope || defaultScope,
|
|
flag: options.flag,
|
|
reparse: options.reparse,
|
|
leadChar: options.leadChar
|
|
}); // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and flags
|
|
// might now produce different results
|
|
|
|
XRegExp.cache.flush('patterns');
|
|
};
|
|
/**
|
|
* Caches and returns the result of calling `XRegExp(pattern, flags)`. On any subsequent call with
|
|
* the same pattern and flag combination, the cached copy of the regex is returned.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} pattern Regex pattern string.
|
|
* @param {String} [flags] Any combination of XRegExp flags.
|
|
* @returns {RegExp} Cached XRegExp object.
|
|
* @example
|
|
*
|
|
* let match;
|
|
* while (match = XRegExp.cache('.', 'gs').exec('abc')) {
|
|
* // The regex is compiled once only
|
|
* }
|
|
*/
|
|
|
|
|
|
XRegExp.cache = function (pattern, flags) {
|
|
if (!regexCache[pattern]) {
|
|
regexCache[pattern] = {};
|
|
}
|
|
|
|
return regexCache[pattern][flags] || (regexCache[pattern][flags] = XRegExp(pattern, flags));
|
|
}; // Intentionally undocumented; used in tests
|
|
|
|
|
|
XRegExp.cache.flush = function (cacheName) {
|
|
if (cacheName === 'patterns') {
|
|
// Flush the pattern cache used by the `XRegExp` constructor
|
|
patternCache = {};
|
|
} else {
|
|
// Flush the regex cache populated by `XRegExp.cache`
|
|
regexCache = {};
|
|
}
|
|
};
|
|
/**
|
|
* Escapes any regular expression metacharacters, for use when matching literal strings. The result
|
|
* can safely be used at any position within a regex that uses any flags.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to escape.
|
|
* @returns {string} String with regex metacharacters escaped.
|
|
* @example
|
|
*
|
|
* XRegExp.escape('Escaped? <.>');
|
|
* // -> 'Escaped\?\u0020<\.>'
|
|
*/
|
|
// Following are the contexts where each metacharacter needs to be escaped because it would
|
|
// otherwise have a special meaning, change the meaning of surrounding characters, or cause an
|
|
// error. Context 'default' means outside character classes only.
|
|
// - `\` - context: all
|
|
// - `[()*+?.$|` - context: default
|
|
// - `]` - context: default with flag u or if forming the end of a character class
|
|
// - `{}` - context: default with flag u or if part of a valid/complete quantifier pattern
|
|
// - `,` - context: default if in a position that causes an unescaped `{` to turn into a quantifier.
|
|
// Ex: `/^a{1\,2}$/` matches `'a{1,2}'`, but `/^a{1,2}$/` matches `'a'` or `'aa'`
|
|
// - `#` and <whitespace> - context: default with flag x
|
|
// - `^` - context: default, and context: class if it's the first character in the class
|
|
// - `-` - context: class if part of a valid character class range
|
|
|
|
|
|
XRegExp.escape = function (str) {
|
|
return String(nullThrows(str)). // Escape most special chars with a backslash
|
|
replace(/[\\\[\]{}()*+?.^$|]/g, '\\$&'). // Convert to \uNNNN for special chars that can't be escaped when used with ES6 flag `u`
|
|
replace(/[\s#\-,]/g, function (match) {
|
|
return "\\u".concat(pad4(hex(match.charCodeAt(0))));
|
|
});
|
|
};
|
|
/**
|
|
* Executes a regex search in a specified string. Returns a match array or `null`. If the provided
|
|
* regex uses named capture, named capture properties are included on the match array's `groups`
|
|
* property. Optional `pos` and `sticky` arguments specify the search start position, and whether
|
|
* the match must start at the specified position only. The `lastIndex` property of the provided
|
|
* regex is not used, but is updated for compatibility. Also fixes browser bugs compared to the
|
|
* native `RegExp.prototype.exec` and can be used reliably cross-browser.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {RegExp} regex Regex to search with.
|
|
* @param {Number} [pos=0] Zero-based index at which to start the search.
|
|
* @param {Boolean|String} [sticky=false] Whether the match must start at the specified position
|
|
* only. The string `'sticky'` is accepted as an alternative to `true`.
|
|
* @returns {Array} Match array with named capture properties on the `groups` object, or `null`. If
|
|
* the `namespacing` feature is off, named capture properties are directly on the match array.
|
|
* @example
|
|
*
|
|
* // Basic use, with named capturing group
|
|
* let match = XRegExp.exec('U+2620', XRegExp('U\\+(?<hex>[0-9A-F]{4})'));
|
|
* match.groups.hex; // -> '2620'
|
|
*
|
|
* // With pos and sticky, in a loop
|
|
* let pos = 3, result = [], match;
|
|
* while (match = XRegExp.exec('<1><2><3><4>5<6>', /<(\d)>/, pos, 'sticky')) {
|
|
* result.push(match[1]);
|
|
* pos = match.index + match[0].length;
|
|
* }
|
|
* // result -> ['2', '3', '4']
|
|
*/
|
|
|
|
|
|
XRegExp.exec = function (str, regex, pos, sticky) {
|
|
var cacheKey = 'g';
|
|
var addY = false;
|
|
var fakeY = false;
|
|
var match;
|
|
addY = hasNativeY && !!(sticky || regex.sticky && sticky !== false);
|
|
|
|
if (addY) {
|
|
cacheKey += 'y';
|
|
} else if (sticky) {
|
|
// Simulate sticky matching by appending an empty capture to the original regex. The
|
|
// resulting regex will succeed no matter what at the current index (set with `lastIndex`),
|
|
// and will not search the rest of the subject string. We'll know that the original regex
|
|
// has failed if that last capture is `''` rather than `undefined` (i.e., if that last
|
|
// capture participated in the match).
|
|
fakeY = true;
|
|
cacheKey += 'FakeY';
|
|
}
|
|
|
|
regex[REGEX_DATA] = regex[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.match`/`replace`
|
|
|
|
var r2 = regex[REGEX_DATA][cacheKey] || (regex[REGEX_DATA][cacheKey] = copyRegex(regex, {
|
|
addG: true,
|
|
addY: addY,
|
|
source: fakeY ? "".concat(regex.source, "|()") : undefined,
|
|
removeY: sticky === false,
|
|
isInternalOnly: true
|
|
}));
|
|
pos = pos || 0;
|
|
r2.lastIndex = pos; // Fixed `exec` required for `lastIndex` fix, named backreferences, etc.
|
|
|
|
match = fixed.exec.call(r2, str); // Get rid of the capture added by the pseudo-sticky matcher if needed. An empty string means
|
|
// the original regexp failed (see above).
|
|
|
|
if (fakeY && match && match.pop() === '') {
|
|
match = null;
|
|
}
|
|
|
|
if (regex.global) {
|
|
regex.lastIndex = match ? r2.lastIndex : 0;
|
|
}
|
|
|
|
return match;
|
|
};
|
|
/**
|
|
* Executes a provided function once per regex match. Searches always start at the beginning of the
|
|
* string and continue until the end, regardless of the state of the regex's `global` property and
|
|
* initial `lastIndex`.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {RegExp} regex Regex to search with.
|
|
* @param {Function} callback Function to execute for each match. Invoked with four arguments:
|
|
* - The match array, with named backreference properties.
|
|
* - The zero-based match index.
|
|
* - The string being traversed.
|
|
* - The regex object being used to traverse the string.
|
|
* @example
|
|
*
|
|
* // Extracts every other digit from a string
|
|
* const evens = [];
|
|
* XRegExp.forEach('1a2345', /\d/, (match, i) => {
|
|
* if (i % 2) evens.push(+match[0]);
|
|
* });
|
|
* // evens -> [2, 4]
|
|
*/
|
|
|
|
|
|
XRegExp.forEach = function (str, regex, callback) {
|
|
var pos = 0;
|
|
var i = -1;
|
|
var match;
|
|
|
|
while (match = XRegExp.exec(str, regex, pos)) {
|
|
// Because `regex` is provided to `callback`, the function could use the deprecated/
|
|
// nonstandard `RegExp.prototype.compile` to mutate the regex. However, since `XRegExp.exec`
|
|
// doesn't use `lastIndex` to set the search position, this can't lead to an infinite loop,
|
|
// at least. Actually, because of the way `XRegExp.exec` caches globalized versions of
|
|
// regexes, mutating the regex will not have any effect on the iteration or matched strings,
|
|
// which is a nice side effect that brings extra safety.
|
|
callback(match, ++i, str, regex);
|
|
pos = match.index + (match[0].length || 1);
|
|
}
|
|
};
|
|
/**
|
|
* Copies a regex object and adds flag `g`. The copy maintains extended data, is augmented with
|
|
* `XRegExp.prototype` properties, and has a fresh `lastIndex` property (set to zero). Native
|
|
* regexes are not recompiled using XRegExp syntax.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {RegExp} regex Regex to globalize.
|
|
* @returns {RegExp} Copy of the provided regex with flag `g` added.
|
|
* @example
|
|
*
|
|
* const globalCopy = XRegExp.globalize(/regex/);
|
|
* globalCopy.global; // -> true
|
|
*/
|
|
|
|
|
|
XRegExp.globalize = function (regex) {
|
|
return copyRegex(regex, {
|
|
addG: true
|
|
});
|
|
};
|
|
/**
|
|
* Installs optional features according to the specified options. Can be undone using
|
|
* `XRegExp.uninstall`.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {Object|String} options Options object or string.
|
|
* @example
|
|
*
|
|
* // With an options object
|
|
* XRegExp.install({
|
|
* // Enables support for astral code points in Unicode addons (implicitly sets flag A)
|
|
* astral: true,
|
|
*
|
|
* // Adds named capture groups to the `groups` property of matches
|
|
* namespacing: true
|
|
* });
|
|
*
|
|
* // With an options string
|
|
* XRegExp.install('astral namespacing');
|
|
*/
|
|
|
|
|
|
XRegExp.install = function (options) {
|
|
options = prepareOptions(options);
|
|
|
|
if (!features.astral && options.astral) {
|
|
setAstral(true);
|
|
}
|
|
|
|
if (!features.namespacing && options.namespacing) {
|
|
setNamespacing(true);
|
|
}
|
|
};
|
|
/**
|
|
* Checks whether an individual optional feature is installed.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} feature Name of the feature to check. One of:
|
|
* - `astral`
|
|
* - `namespacing`
|
|
* @returns {boolean} Whether the feature is installed.
|
|
* @example
|
|
*
|
|
* XRegExp.isInstalled('astral');
|
|
*/
|
|
|
|
|
|
XRegExp.isInstalled = function (feature) {
|
|
return !!features[feature];
|
|
};
|
|
/**
|
|
* Returns `true` if an object is a regex; `false` if it isn't. This works correctly for regexes
|
|
* created in another frame, when `instanceof` and `constructor` checks would fail.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {*} value Object to check.
|
|
* @returns {boolean} Whether the object is a `RegExp` object.
|
|
* @example
|
|
*
|
|
* XRegExp.isRegExp('string'); // -> false
|
|
* XRegExp.isRegExp(/regex/i); // -> true
|
|
* XRegExp.isRegExp(RegExp('^', 'm')); // -> true
|
|
* XRegExp.isRegExp(XRegExp('(?s).')); // -> true
|
|
*/
|
|
|
|
|
|
XRegExp.isRegExp = function (value) {
|
|
return Object.prototype.toString.call(value) === '[object RegExp]';
|
|
}; // Same as `isType(value, 'RegExp')`, but avoiding that function call here for perf since
|
|
// `isRegExp` is used heavily by internals including regex construction
|
|
|
|
/**
|
|
* Returns the first matched string, or in global mode, an array containing all matched strings.
|
|
* This is essentially a more convenient re-implementation of `String.prototype.match` that gives
|
|
* the result types you actually want (string instead of `exec`-style array in match-first mode,
|
|
* and an empty array instead of `null` when no matches are found in match-all mode). It also lets
|
|
* you override flag g and ignore `lastIndex`, and fixes browser bugs.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {RegExp} regex Regex to search with.
|
|
* @param {String} [scope='one'] Use 'one' to return the first match as a string. Use 'all' to
|
|
* return an array of all matched strings. If not explicitly specified and `regex` uses flag g,
|
|
* `scope` is 'all'.
|
|
* @returns {String|Array} In match-first mode: First match as a string, or `null`. In match-all
|
|
* mode: Array of all matched strings, or an empty array.
|
|
* @example
|
|
*
|
|
* // Match first
|
|
* XRegExp.match('abc', /\w/); // -> 'a'
|
|
* XRegExp.match('abc', /\w/g, 'one'); // -> 'a'
|
|
* XRegExp.match('abc', /x/g, 'one'); // -> null
|
|
*
|
|
* // Match all
|
|
* XRegExp.match('abc', /\w/g); // -> ['a', 'b', 'c']
|
|
* XRegExp.match('abc', /\w/, 'all'); // -> ['a', 'b', 'c']
|
|
* XRegExp.match('abc', /x/, 'all'); // -> []
|
|
*/
|
|
|
|
|
|
XRegExp.match = function (str, regex, scope) {
|
|
var global = regex.global && scope !== 'one' || scope === 'all';
|
|
var cacheKey = (global ? 'g' : '') + (regex.sticky ? 'y' : '') || 'noGY';
|
|
regex[REGEX_DATA] = regex[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.exec`/`replace`
|
|
|
|
var r2 = regex[REGEX_DATA][cacheKey] || (regex[REGEX_DATA][cacheKey] = copyRegex(regex, {
|
|
addG: !!global,
|
|
removeG: scope === 'one',
|
|
isInternalOnly: true
|
|
}));
|
|
var result = String(nullThrows(str)).match(r2);
|
|
|
|
if (regex.global) {
|
|
regex.lastIndex = scope === 'one' && result ? // Can't use `r2.lastIndex` since `r2` is nonglobal in this case
|
|
result.index + result[0].length : 0;
|
|
}
|
|
|
|
return global ? result || [] : result && result[0];
|
|
};
|
|
/**
|
|
* Retrieves the matches from searching a string using a chain of regexes that successively search
|
|
* within previous matches. The provided `chain` array can contain regexes and or objects with
|
|
* `regex` and `backref` properties. When a backreference is specified, the named or numbered
|
|
* backreference is passed forward to the next regex or returned.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {Array} chain Regexes that each search for matches within preceding results.
|
|
* @returns {Array} Matches by the last regex in the chain, or an empty array.
|
|
* @example
|
|
*
|
|
* // Basic usage; matches numbers within <b> tags
|
|
* XRegExp.matchChain('1 <b>2</b> 3 <b>4 a 56</b>', [
|
|
* XRegExp('(?is)<b>.*?</b>'),
|
|
* /\d+/
|
|
* ]);
|
|
* // -> ['2', '4', '56']
|
|
*
|
|
* // Passing forward and returning specific backreferences
|
|
* const html = `<a href="http://xregexp.com/api/">XRegExp</a>
|
|
* <a href="http://www.google.com/">Google</a>`;
|
|
* XRegExp.matchChain(html, [
|
|
* {regex: /<a href="([^"]+)">/i, backref: 1},
|
|
* {regex: XRegExp('(?i)^https?://(?<domain>[^/?#]+)'), backref: 'domain'}
|
|
* ]);
|
|
* // -> ['xregexp.com', 'www.google.com']
|
|
*/
|
|
|
|
|
|
XRegExp.matchChain = function (str, chain) {
|
|
return function recurseChain(values, level) {
|
|
var item = chain[level].regex ? chain[level] : {
|
|
regex: chain[level]
|
|
};
|
|
var matches = [];
|
|
|
|
function addMatch(match) {
|
|
if (item.backref) {
|
|
var ERR_UNDEFINED_GROUP = "Backreference to undefined group: ".concat(item.backref);
|
|
var isNamedBackref = isNaN(item.backref);
|
|
|
|
if (isNamedBackref && XRegExp.isInstalled('namespacing')) {
|
|
// `groups` has `null` as prototype, so using `in` instead of `hasOwnProperty`
|
|
if (!(match.groups && item.backref in match.groups)) {
|
|
throw new ReferenceError(ERR_UNDEFINED_GROUP);
|
|
}
|
|
} else if (!match.hasOwnProperty(item.backref)) {
|
|
throw new ReferenceError(ERR_UNDEFINED_GROUP);
|
|
}
|
|
|
|
var backrefValue = isNamedBackref && XRegExp.isInstalled('namespacing') ? match.groups[item.backref] : match[item.backref];
|
|
matches.push(backrefValue || '');
|
|
} else {
|
|
matches.push(match[0]);
|
|
}
|
|
}
|
|
|
|
var _iterator3 = _createForOfIteratorHelper(values),
|
|
_step3;
|
|
|
|
try {
|
|
for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
|
|
var value = _step3.value;
|
|
(0, _forEach["default"])(XRegExp).call(XRegExp, value, item.regex, addMatch);
|
|
}
|
|
} catch (err) {
|
|
_iterator3.e(err);
|
|
} finally {
|
|
_iterator3.f();
|
|
}
|
|
|
|
return level === chain.length - 1 || !matches.length ? matches : recurseChain(matches, level + 1);
|
|
}([str], 0);
|
|
};
|
|
/**
|
|
* Returns a new string with one or all matches of a pattern replaced. The pattern can be a string
|
|
* or regex, and the replacement can be a string or a function to be called for each match. To
|
|
* perform a global search and replace, use the optional `scope` argument or include flag g if using
|
|
* a regex. Replacement strings can use `$<n>` or `${n}` for named and numbered backreferences.
|
|
* Replacement functions can use named backreferences via the last argument. Also fixes browser bugs
|
|
* compared to the native `String.prototype.replace` and can be used reliably cross-browser.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {RegExp|String} search Search pattern to be replaced.
|
|
* @param {String|Function} replacement Replacement string or a function invoked to create it.
|
|
* Replacement strings can include special replacement syntax:
|
|
* - $$ - Inserts a literal $ character.
|
|
* - $&, $0 - Inserts the matched substring.
|
|
* - $` - Inserts the string that precedes the matched substring (left context).
|
|
* - $' - Inserts the string that follows the matched substring (right context).
|
|
* - $n, $nn - Where n/nn are digits referencing an existing capturing group, inserts
|
|
* backreference n/nn.
|
|
* - $<n>, ${n} - Where n is a name or any number of digits that reference an existing capturing
|
|
* group, inserts backreference n.
|
|
* Replacement functions are invoked with three or more arguments:
|
|
* - args[0] - The matched substring (corresponds to `$&` above). If the `namespacing` feature
|
|
* is off, named backreferences are accessible as properties of this argument.
|
|
* - args[1..n] - One argument for each backreference (corresponding to `$1`, `$2`, etc. above).
|
|
* If the regex has no capturing groups, no arguments appear in this position.
|
|
* - args[n+1] - The zero-based index of the match within the entire search string.
|
|
* - args[n+2] - The total string being searched.
|
|
* - args[n+3] - If the the search pattern is a regex with named capturing groups, the last
|
|
* argument is the groups object. Its keys are the backreference names and its values are the
|
|
* backreference values. If the `namespacing` feature is off, this argument is not present.
|
|
* @param {String} [scope] Use 'one' to replace the first match only, or 'all'. Defaults to 'one'.
|
|
* Defaults to 'all' if using a regex with flag g.
|
|
* @returns {String} New string with one or all matches replaced.
|
|
* @example
|
|
*
|
|
* // Regex search, using named backreferences in replacement string
|
|
* const name = XRegExp('(?<first>\\w+) (?<last>\\w+)');
|
|
* XRegExp.replace('John Smith', name, '$<last>, $<first>');
|
|
* // -> 'Smith, John'
|
|
*
|
|
* // Regex search, using named backreferences in replacement function
|
|
* XRegExp.replace('John Smith', name, (...args) => {
|
|
* const groups = args[args.length - 1];
|
|
* return `${groups.last}, ${groups.first}`;
|
|
* });
|
|
* // -> 'Smith, John'
|
|
*
|
|
* // String search, with replace-all
|
|
* XRegExp.replace('RegExp builds RegExps', 'RegExp', 'XRegExp', 'all');
|
|
* // -> 'XRegExp builds XRegExps'
|
|
*/
|
|
|
|
|
|
XRegExp.replace = function (str, search, replacement, scope) {
|
|
var isRegex = XRegExp.isRegExp(search);
|
|
var global = search.global && scope !== 'one' || scope === 'all';
|
|
var cacheKey = (global ? 'g' : '') + (search.sticky ? 'y' : '') || 'noGY';
|
|
var s2 = search;
|
|
|
|
if (isRegex) {
|
|
search[REGEX_DATA] = search[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.exec`/`match`. Since a copy is used, `search`'s
|
|
// `lastIndex` isn't updated *during* replacement iterations
|
|
|
|
s2 = search[REGEX_DATA][cacheKey] || (search[REGEX_DATA][cacheKey] = copyRegex(search, {
|
|
addG: !!global,
|
|
removeG: scope === 'one',
|
|
isInternalOnly: true
|
|
}));
|
|
} else if (global) {
|
|
s2 = new RegExp(XRegExp.escape(String(search)), 'g');
|
|
} // Fixed `replace` required for named backreferences, etc.
|
|
|
|
|
|
var result = fixed.replace.call(nullThrows(str), s2, replacement);
|
|
|
|
if (isRegex && search.global) {
|
|
// Fixes IE, Safari bug (last tested IE 9, Safari 5.1)
|
|
search.lastIndex = 0;
|
|
}
|
|
|
|
return result;
|
|
};
|
|
/**
|
|
* Performs batch processing of string replacements. Used like `XRegExp.replace`, but accepts an
|
|
* array of replacement details. Later replacements operate on the output of earlier replacements.
|
|
* Replacement details are accepted as an array with a regex or string to search for, the
|
|
* replacement string or function, and an optional scope of 'one' or 'all'. Uses the XRegExp
|
|
* replacement text syntax, which supports named backreference properties via `$<name>` or
|
|
* `${name}`.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {Array} replacements Array of replacement detail arrays.
|
|
* @returns {String} New string with all replacements.
|
|
* @example
|
|
*
|
|
* str = XRegExp.replaceEach(str, [
|
|
* [XRegExp('(?<name>a)'), 'z$<name>'],
|
|
* [/b/gi, 'y'],
|
|
* [/c/g, 'x', 'one'], // scope 'one' overrides /g
|
|
* [/d/, 'w', 'all'], // scope 'all' overrides lack of /g
|
|
* ['e', 'v', 'all'], // scope 'all' allows replace-all for strings
|
|
* [/f/g, (match) => match.toUpperCase()]
|
|
* ]);
|
|
*/
|
|
|
|
|
|
XRegExp.replaceEach = function (str, replacements) {
|
|
var _iterator4 = _createForOfIteratorHelper(replacements),
|
|
_step4;
|
|
|
|
try {
|
|
for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
|
|
var r = _step4.value;
|
|
str = XRegExp.replace(str, r[0], r[1], r[2]);
|
|
}
|
|
} catch (err) {
|
|
_iterator4.e(err);
|
|
} finally {
|
|
_iterator4.f();
|
|
}
|
|
|
|
return str;
|
|
};
|
|
/**
|
|
* Splits a string into an array of strings using a regex or string separator. Matches of the
|
|
* separator are not included in the result array. However, if `separator` is a regex that contains
|
|
* capturing groups, backreferences are spliced into the result each time `separator` is matched.
|
|
* Fixes browser bugs compared to the native `String.prototype.split` and can be used reliably
|
|
* cross-browser.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to split.
|
|
* @param {RegExp|String} separator Regex or string to use for separating the string.
|
|
* @param {Number} [limit] Maximum number of items to include in the result array.
|
|
* @returns {Array} Array of substrings.
|
|
* @example
|
|
*
|
|
* // Basic use
|
|
* XRegExp.split('a b c', ' ');
|
|
* // -> ['a', 'b', 'c']
|
|
*
|
|
* // With limit
|
|
* XRegExp.split('a b c', ' ', 2);
|
|
* // -> ['a', 'b']
|
|
*
|
|
* // Backreferences in result array
|
|
* XRegExp.split('..word1..', /([a-z]+)(\d+)/i);
|
|
* // -> ['..', 'word', '1', '..']
|
|
*/
|
|
|
|
|
|
XRegExp.split = function (str, separator, limit) {
|
|
return fixed.split.call(nullThrows(str), separator, limit);
|
|
};
|
|
/**
|
|
* Executes a regex search in a specified string. Returns `true` or `false`. Optional `pos` and
|
|
* `sticky` arguments specify the search start position, and whether the match must start at the
|
|
* specified position only. The `lastIndex` property of the provided regex is not used, but is
|
|
* updated for compatibility. Also fixes browser bugs compared to the native
|
|
* `RegExp.prototype.test` and can be used reliably cross-browser.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {String} str String to search.
|
|
* @param {RegExp} regex Regex to search with.
|
|
* @param {Number} [pos=0] Zero-based index at which to start the search.
|
|
* @param {Boolean|String} [sticky=false] Whether the match must start at the specified position
|
|
* only. The string `'sticky'` is accepted as an alternative to `true`.
|
|
* @returns {boolean} Whether the regex matched the provided value.
|
|
* @example
|
|
*
|
|
* // Basic use
|
|
* XRegExp.test('abc', /c/); // -> true
|
|
*
|
|
* // With pos and sticky
|
|
* XRegExp.test('abc', /c/, 0, 'sticky'); // -> false
|
|
* XRegExp.test('abc', /c/, 2, 'sticky'); // -> true
|
|
*/
|
|
// Do this the easy way :-)
|
|
|
|
|
|
XRegExp.test = function (str, regex, pos, sticky) {
|
|
return !!XRegExp.exec(str, regex, pos, sticky);
|
|
};
|
|
/**
|
|
* Uninstalls optional features according to the specified options. Used to undo the actions of
|
|
* `XRegExp.install`.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {Object|String} options Options object or string.
|
|
* @example
|
|
*
|
|
* // With an options object
|
|
* XRegExp.uninstall({
|
|
* // Disables support for astral code points in Unicode addons (unless enabled per regex)
|
|
* astral: true,
|
|
*
|
|
* // Don't add named capture groups to the `groups` property of matches
|
|
* namespacing: true
|
|
* });
|
|
*
|
|
* // With an options string
|
|
* XRegExp.uninstall('astral namespacing');
|
|
*/
|
|
|
|
|
|
XRegExp.uninstall = function (options) {
|
|
options = prepareOptions(options);
|
|
|
|
if (features.astral && options.astral) {
|
|
setAstral(false);
|
|
}
|
|
|
|
if (features.namespacing && options.namespacing) {
|
|
setNamespacing(false);
|
|
}
|
|
};
|
|
/**
|
|
* Returns an XRegExp object that is the union of the given patterns. Patterns can be provided as
|
|
* regex objects or strings. Metacharacters are escaped in patterns provided as strings.
|
|
* Backreferences in provided regex objects are automatically renumbered to work correctly within
|
|
* the larger combined pattern. Native flags used by provided regexes are ignored in favor of the
|
|
* `flags` argument.
|
|
*
|
|
* @memberOf XRegExp
|
|
* @param {Array} patterns Regexes and strings to combine.
|
|
* @param {String} [flags] Any combination of XRegExp flags.
|
|
* @param {Object} [options] Options object with optional properties:
|
|
* - `conjunction` {String} Type of conjunction to use: 'or' (default) or 'none'.
|
|
* @returns {RegExp} Union of the provided regexes and strings.
|
|
* @example
|
|
*
|
|
* XRegExp.union(['a+b*c', /(dogs)\1/, /(cats)\1/], 'i');
|
|
* // -> /a\+b\*c|(dogs)\1|(cats)\2/i
|
|
*
|
|
* XRegExp.union([/man/, /bear/, /pig/], 'i', {conjunction: 'none'});
|
|
* // -> /manbearpig/i
|
|
*/
|
|
|
|
|
|
XRegExp.union = function (patterns, flags, options) {
|
|
options = options || {};
|
|
var conjunction = options.conjunction || 'or';
|
|
var numCaptures = 0;
|
|
var numPriorCaptures;
|
|
var captureNames;
|
|
|
|
function rewrite(match, paren, backref) {
|
|
var name = captureNames[numCaptures - numPriorCaptures]; // Capturing group
|
|
|
|
if (paren) {
|
|
++numCaptures; // If the current capture has a name, preserve the name
|
|
|
|
if (name) {
|
|
return "(?<".concat(name, ">");
|
|
} // Backreference
|
|
|
|
} else if (backref) {
|
|
// Rewrite the backreference
|
|
return "\\".concat(+backref + numPriorCaptures);
|
|
}
|
|
|
|
return match;
|
|
}
|
|
|
|
if (!(isType(patterns, 'Array') && patterns.length)) {
|
|
throw new TypeError('Must provide a nonempty array of patterns to merge');
|
|
}
|
|
|
|
var parts = /(\()(?!\?)|\\([1-9]\d*)|\\[\s\S]|\[(?:[^\\\]]|\\[\s\S])*\]/g;
|
|
var output = [];
|
|
|
|
var _iterator5 = _createForOfIteratorHelper(patterns),
|
|
_step5;
|
|
|
|
try {
|
|
for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {
|
|
var pattern = _step5.value;
|
|
|
|
if (XRegExp.isRegExp(pattern)) {
|
|
numPriorCaptures = numCaptures;
|
|
captureNames = pattern[REGEX_DATA] && pattern[REGEX_DATA].captureNames || []; // Rewrite backreferences. Passing to XRegExp dies on octals and ensures patterns are
|
|
// independently valid; helps keep this simple. Named captures are put back
|
|
|
|
output.push(XRegExp(pattern.source).source.replace(parts, rewrite));
|
|
} else {
|
|
output.push(XRegExp.escape(pattern));
|
|
}
|
|
}
|
|
} catch (err) {
|
|
_iterator5.e(err);
|
|
} finally {
|
|
_iterator5.f();
|
|
}
|
|
|
|
var separator = conjunction === 'none' ? '' : '|';
|
|
return XRegExp(output.join(separator), flags);
|
|
}; // ==--------------------------==
|
|
// Fixed/extended native methods
|
|
// ==--------------------------==
|
|
|
|
/**
|
|
* Adds named capture support (with backreferences returned as `result.name`), and fixes browser
|
|
* bugs in the native `RegExp.prototype.exec`. Use via `XRegExp.exec`.
|
|
*
|
|
* @memberOf RegExp
|
|
* @param {String} str String to search.
|
|
* @returns {Array} Match array with named backreference properties, or `null`.
|
|
*/
|
|
|
|
|
|
fixed.exec = function (str) {
|
|
var origLastIndex = this.lastIndex;
|
|
var match = RegExp.prototype.exec.apply(this, arguments);
|
|
|
|
if (match) {
|
|
// Fix browsers whose `exec` methods don't return `undefined` for nonparticipating capturing
|
|
// groups. This fixes IE 5.5-8, but not IE 9's quirks mode or emulation of older IEs. IE 9
|
|
// in standards mode follows the spec.
|
|
if (!correctExecNpcg && match.length > 1 && (0, _indexOf["default"])(match).call(match, '') !== -1) {
|
|
var _context3;
|
|
|
|
var r2 = copyRegex(this, {
|
|
removeG: true,
|
|
isInternalOnly: true
|
|
}); // Using `str.slice(match.index)` rather than `match[0]` in case lookahead allowed
|
|
// matching due to characters outside the match
|
|
|
|
(0, _slice["default"])(_context3 = String(str)).call(_context3, match.index).replace(r2, function () {
|
|
var len = arguments.length; // Skip index 0 and the last 2
|
|
|
|
for (var i = 1; i < len - 2; ++i) {
|
|
if ((i < 0 || arguments.length <= i ? undefined : arguments[i]) === undefined) {
|
|
match[i] = undefined;
|
|
}
|
|
}
|
|
});
|
|
} // Attach named capture properties
|
|
|
|
|
|
if (this[REGEX_DATA] && this[REGEX_DATA].captureNames) {
|
|
var groupsObject = match;
|
|
|
|
if (XRegExp.isInstalled('namespacing')) {
|
|
// https://tc39.github.io/proposal-regexp-named-groups/#sec-regexpbuiltinexec
|
|
match.groups = (0, _create["default"])(null);
|
|
groupsObject = match.groups;
|
|
} // Skip index 0
|
|
|
|
|
|
for (var i = 1; i < match.length; ++i) {
|
|
var name = this[REGEX_DATA].captureNames[i - 1];
|
|
|
|
if (name) {
|
|
groupsObject[name] = match[i];
|
|
}
|
|
} // Preserve any existing `groups` obj that came from native ES2018 named capture
|
|
|
|
} else if (!match.groups && XRegExp.isInstalled('namespacing')) {
|
|
match.groups = undefined;
|
|
} // Fix browsers that increment `lastIndex` after zero-length matches
|
|
|
|
|
|
if (this.global && !match[0].length && this.lastIndex > match.index) {
|
|
this.lastIndex = match.index;
|
|
}
|
|
}
|
|
|
|
if (!this.global) {
|
|
// Fixes IE, Opera bug (last tested IE 9, Opera 11.6)
|
|
this.lastIndex = origLastIndex;
|
|
}
|
|
|
|
return match;
|
|
};
|
|
/**
|
|
* Fixes browser bugs in the native `RegExp.prototype.test`.
|
|
*
|
|
* @memberOf RegExp
|
|
* @param {String} str String to search.
|
|
* @returns {boolean} Whether the regex matched the provided value.
|
|
*/
|
|
|
|
|
|
fixed.test = function (str) {
|
|
// Do this the easy way :-)
|
|
return !!fixed.exec.call(this, str);
|
|
};
|
|
/**
|
|
* Adds named capture support (with backreferences returned as `result.name`), and fixes browser
|
|
* bugs in the native `String.prototype.match`.
|
|
*
|
|
* @memberOf String
|
|
* @param {RegExp|*} regex Regex to search with. If not a regex object, it is passed to `RegExp`.
|
|
* @returns {Array} If `regex` uses flag g, an array of match strings or `null`. Without flag g,
|
|
* the result of calling `regex.exec(this)`.
|
|
*/
|
|
|
|
|
|
fixed.match = function (regex) {
|
|
if (!XRegExp.isRegExp(regex)) {
|
|
// Use the native `RegExp` rather than `XRegExp`
|
|
regex = new RegExp(regex);
|
|
} else if (regex.global) {
|
|
var result = String.prototype.match.apply(this, arguments); // Fixes IE bug
|
|
|
|
regex.lastIndex = 0;
|
|
return result;
|
|
}
|
|
|
|
return fixed.exec.call(regex, nullThrows(this));
|
|
};
|
|
/**
|
|
* Adds support for `${n}` (or `$<n>`) tokens for named and numbered backreferences in replacement
|
|
* text, and provides named backreferences to replacement functions as `arguments[0].name`. Also
|
|
* fixes browser bugs in replacement text syntax when performing a replacement using a nonregex
|
|
* search value, and the value of a replacement regex's `lastIndex` property during replacement
|
|
* iterations and upon completion. Note that this doesn't support SpiderMonkey's proprietary third
|
|
* (`flags`) argument. Use via `XRegExp.replace`.
|
|
*
|
|
* @memberOf String
|
|
* @param {RegExp|String} search Search pattern to be replaced.
|
|
* @param {String|Function} replacement Replacement string or a function invoked to create it.
|
|
* @returns {string} New string with one or all matches replaced.
|
|
*/
|
|
|
|
|
|
fixed.replace = function (search, replacement) {
|
|
var isRegex = XRegExp.isRegExp(search);
|
|
var origLastIndex;
|
|
var captureNames;
|
|
var result;
|
|
|
|
if (isRegex) {
|
|
if (search[REGEX_DATA]) {
|
|
captureNames = search[REGEX_DATA].captureNames;
|
|
} // Only needed if `search` is nonglobal
|
|
|
|
|
|
origLastIndex = search.lastIndex;
|
|
} else {
|
|
search += ''; // Type-convert
|
|
} // Don't use `typeof`; some older browsers return 'function' for regex objects
|
|
|
|
|
|
if (isType(replacement, 'Function')) {
|
|
// Stringifying `this` fixes a bug in IE < 9 where the last argument in replacement
|
|
// functions isn't type-converted to a string
|
|
result = String(this).replace(search, function () {
|
|
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
args[_key] = arguments[_key];
|
|
}
|
|
|
|
if (captureNames) {
|
|
var groupsObject;
|
|
|
|
if (XRegExp.isInstalled('namespacing')) {
|
|
// https://tc39.github.io/proposal-regexp-named-groups/#sec-regexpbuiltinexec
|
|
groupsObject = (0, _create["default"])(null);
|
|
args.push(groupsObject);
|
|
} else {
|
|
// Change the `args[0]` string primitive to a `String` object that can store
|
|
// properties. This really does need to use `String` as a constructor
|
|
args[0] = new String(args[0]);
|
|
groupsObject = args[0];
|
|
} // Store named backreferences
|
|
|
|
|
|
for (var i = 0; i < captureNames.length; ++i) {
|
|
if (captureNames[i]) {
|
|
groupsObject[captureNames[i]] = args[i + 1];
|
|
}
|
|
}
|
|
} // ES6 specs the context for replacement functions as `undefined`
|
|
|
|
|
|
return replacement.apply(void 0, args);
|
|
});
|
|
} else {
|
|
// Ensure that the last value of `args` will be a string when given nonstring `this`,
|
|
// while still throwing on null or undefined context
|
|
result = String(nullThrows(this)).replace(search, function () {
|
|
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
|
|
args[_key2] = arguments[_key2];
|
|
}
|
|
|
|
return String(replacement).replace(replacementToken, replacer);
|
|
|
|
function replacer($0, bracketed, angled, dollarToken) {
|
|
bracketed = bracketed || angled; // ES2018 added a new trailing `groups` arg that's passed to replacement functions
|
|
// when the search regex uses native named capture
|
|
|
|
var numNonCaptureArgs = isType(args[args.length - 1], 'Object') ? 4 : 3;
|
|
var numCaptures = args.length - numNonCaptureArgs; // Handle named or numbered backreference with curly or angled braces: ${n}, $<n>
|
|
|
|
if (bracketed) {
|
|
// Handle backreference to numbered capture, if `bracketed` is an integer. Use
|
|
// `0` for the entire match. Any number of leading zeros may be used.
|
|
if (/^\d+$/.test(bracketed)) {
|
|
// Type-convert and drop leading zeros
|
|
var _n = +bracketed;
|
|
|
|
if (_n <= numCaptures) {
|
|
return args[_n] || '';
|
|
}
|
|
} // Handle backreference to named capture. If the name does not refer to an
|
|
// existing capturing group, it's an error. Also handles the error for numbered
|
|
// backference that does not refer to an existing group.
|
|
// Using `indexOf` since having groups with the same name is already an error,
|
|
// otherwise would need `lastIndexOf`.
|
|
|
|
|
|
var n = captureNames ? (0, _indexOf["default"])(captureNames).call(captureNames, bracketed) : -1;
|
|
|
|
if (n < 0) {
|
|
throw new SyntaxError("Backreference to undefined group ".concat($0));
|
|
}
|
|
|
|
return args[n + 1] || '';
|
|
} // Handle `$`-prefixed variable
|
|
// Handle space/blank first because type conversion with `+` drops space padding
|
|
// and converts spaces and empty strings to `0`
|
|
|
|
|
|
if (dollarToken === '' || dollarToken === ' ') {
|
|
throw new SyntaxError("Invalid token ".concat($0));
|
|
}
|
|
|
|
if (dollarToken === '&' || +dollarToken === 0) {
|
|
// $&, $0 (not followed by 1-9), $00
|
|
return args[0];
|
|
}
|
|
|
|
if (dollarToken === '$') {
|
|
// $$
|
|
return '$';
|
|
}
|
|
|
|
if (dollarToken === '`') {
|
|
var _context4;
|
|
|
|
// $` (left context)
|
|
return (0, _slice["default"])(_context4 = args[args.length - 1]).call(_context4, 0, args[args.length - 2]);
|
|
}
|
|
|
|
if (dollarToken === "'") {
|
|
var _context5;
|
|
|
|
// $' (right context)
|
|
return (0, _slice["default"])(_context5 = args[args.length - 1]).call(_context5, args[args.length - 2] + args[0].length);
|
|
} // Handle numbered backreference without braces
|
|
// Type-convert and drop leading zero
|
|
|
|
|
|
dollarToken = +dollarToken; // XRegExp behavior for `$n` and `$nn`:
|
|
// - Backrefs end after 1 or 2 digits. Use `${..}` or `$<..>` for more digits.
|
|
// - `$1` is an error if no capturing groups.
|
|
// - `$10` is an error if less than 10 capturing groups. Use `${1}0` or `$<1>0`
|
|
// instead.
|
|
// - `$01` is `$1` if at least one capturing group, else it's an error.
|
|
// - `$0` (not followed by 1-9) and `$00` are the entire match.
|
|
// Native behavior, for comparison:
|
|
// - Backrefs end after 1 or 2 digits. Cannot reference capturing group 100+.
|
|
// - `$1` is a literal `$1` if no capturing groups.
|
|
// - `$10` is `$1` followed by a literal `0` if less than 10 capturing groups.
|
|
// - `$01` is `$1` if at least one capturing group, else it's a literal `$01`.
|
|
// - `$0` is a literal `$0`.
|
|
|
|
if (!isNaN(dollarToken)) {
|
|
if (dollarToken > numCaptures) {
|
|
throw new SyntaxError("Backreference to undefined group ".concat($0));
|
|
}
|
|
|
|
return args[dollarToken] || '';
|
|
} // `$` followed by an unsupported char is an error, unlike native JS
|
|
|
|
|
|
throw new SyntaxError("Invalid token ".concat($0));
|
|
}
|
|
});
|
|
}
|
|
|
|
if (isRegex) {
|
|
if (search.global) {
|
|
// Fixes IE, Safari bug (last tested IE 9, Safari 5.1)
|
|
search.lastIndex = 0;
|
|
} else {
|
|
// Fixes IE, Opera bug (last tested IE 9, Opera 11.6)
|
|
search.lastIndex = origLastIndex;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
};
|
|
/**
|
|
* Fixes browser bugs in the native `String.prototype.split`. Use via `XRegExp.split`.
|
|
*
|
|
* @memberOf String
|
|
* @param {RegExp|String} separator Regex or string to use for separating the string.
|
|
* @param {Number} [limit] Maximum number of items to include in the result array.
|
|
* @returns {!Array} Array of substrings.
|
|
*/
|
|
|
|
|
|
fixed.split = function (separator, limit) {
|
|
if (!XRegExp.isRegExp(separator)) {
|
|
// Browsers handle nonregex split correctly, so use the faster native method
|
|
return String.prototype.split.apply(this, arguments);
|
|
}
|
|
|
|
var str = String(this);
|
|
var output = [];
|
|
var origLastIndex = separator.lastIndex;
|
|
var lastLastIndex = 0;
|
|
var lastLength; // Values for `limit`, per the spec:
|
|
// If undefined: pow(2,32) - 1
|
|
// If 0, Infinity, or NaN: 0
|
|
// If positive number: limit = floor(limit); if (limit >= pow(2,32)) limit -= pow(2,32);
|
|
// If negative number: pow(2,32) - floor(abs(limit))
|
|
// If other: Type-convert, then use the above rules
|
|
// This line fails in very strange ways for some values of `limit` in Opera 10.5-10.63, unless
|
|
// Opera Dragonfly is open (go figure). It works in at least Opera 9.5-10.1 and 11+
|
|
|
|
limit = (limit === undefined ? -1 : limit) >>> 0;
|
|
(0, _forEach["default"])(XRegExp).call(XRegExp, str, separator, function (match) {
|
|
// This condition is not the same as `if (match[0].length)`
|
|
if (match.index + match[0].length > lastLastIndex) {
|
|
output.push((0, _slice["default"])(str).call(str, lastLastIndex, match.index));
|
|
|
|
if (match.length > 1 && match.index < str.length) {
|
|
Array.prototype.push.apply(output, (0, _slice["default"])(match).call(match, 1));
|
|
}
|
|
|
|
lastLength = match[0].length;
|
|
lastLastIndex = match.index + lastLength;
|
|
}
|
|
});
|
|
|
|
if (lastLastIndex === str.length) {
|
|
if (!separator.test('') || lastLength) {
|
|
output.push('');
|
|
}
|
|
} else {
|
|
output.push((0, _slice["default"])(str).call(str, lastLastIndex));
|
|
}
|
|
|
|
separator.lastIndex = origLastIndex;
|
|
return output.length > limit ? (0, _slice["default"])(output).call(output, 0, limit) : output;
|
|
}; // ==--------------------------==
|
|
// Built-in syntax/flag tokens
|
|
// ==--------------------------==
|
|
|
|
/*
|
|
* Letter escapes that natively match literal characters: `\a`, `\A`, etc. These should be
|
|
* SyntaxErrors but are allowed in web reality. XRegExp makes them errors for cross-browser
|
|
* consistency and to reserve their syntax, but lets them be superseded by addons.
|
|
*/
|
|
|
|
|
|
XRegExp.addToken(/\\([ABCE-RTUVXYZaeg-mopqyz]|c(?![A-Za-z])|u(?![\dA-Fa-f]{4}|{[\dA-Fa-f]+})|x(?![\dA-Fa-f]{2}))/, function (match, scope) {
|
|
// \B is allowed in default scope only
|
|
if (match[1] === 'B' && scope === defaultScope) {
|
|
return match[0];
|
|
}
|
|
|
|
throw new SyntaxError("Invalid escape ".concat(match[0]));
|
|
}, {
|
|
scope: 'all',
|
|
leadChar: '\\'
|
|
});
|
|
/*
|
|
* Unicode code point escape with curly braces: `\u{N..}`. `N..` is any one or more digit
|
|
* hexadecimal number from 0-10FFFF, and can include leading zeros. Requires the native ES6 `u` flag
|
|
* to support code points greater than U+FFFF. Avoids converting code points above U+FFFF to
|
|
* surrogate pairs (which could be done without flag `u`), since that could lead to broken behavior
|
|
* if you follow a `\u{N..}` token that references a code point above U+FFFF with a quantifier, or
|
|
* if you use the same in a character class.
|
|
*/
|
|
|
|
XRegExp.addToken(/\\u{([\dA-Fa-f]+)}/, function (match, scope, flags) {
|
|
var code = dec(match[1]);
|
|
|
|
if (code > 0x10FFFF) {
|
|
throw new SyntaxError("Invalid Unicode code point ".concat(match[0]));
|
|
}
|
|
|
|
if (code <= 0xFFFF) {
|
|
// Converting to \uNNNN avoids needing to escape the literal character and keep it
|
|
// separate from preceding tokens
|
|
return "\\u".concat(pad4(hex(code)));
|
|
} // If `code` is between 0xFFFF and 0x10FFFF, require and defer to native handling
|
|
|
|
|
|
if (hasNativeU && (0, _indexOf["default"])(flags).call(flags, 'u') !== -1) {
|
|
return match[0];
|
|
}
|
|
|
|
throw new SyntaxError('Cannot use Unicode code point above \\u{FFFF} without flag u');
|
|
}, {
|
|
scope: 'all',
|
|
leadChar: '\\'
|
|
});
|
|
/*
|
|
* Comment pattern: `(?# )`. Inline comments are an alternative to the line comments allowed in
|
|
* free-spacing mode (flag x).
|
|
*/
|
|
|
|
XRegExp.addToken(/\(\?#[^)]*\)/, getContextualTokenSeparator, {
|
|
leadChar: '('
|
|
});
|
|
/*
|
|
* Whitespace and line comments, in free-spacing mode (aka extended mode, flag x) only.
|
|
*/
|
|
|
|
XRegExp.addToken(/\s+|#[^\n]*\n?/, getContextualTokenSeparator, {
|
|
flag: 'x'
|
|
});
|
|
/*
|
|
* Dot, in dotAll mode (aka singleline mode, flag s) only.
|
|
*/
|
|
|
|
if (!hasNativeS) {
|
|
XRegExp.addToken(/\./, function () {
|
|
return '[\\s\\S]';
|
|
}, {
|
|
flag: 's',
|
|
leadChar: '.'
|
|
});
|
|
}
|
|
/*
|
|
* Named backreference: `\k<name>`. Backreference names can use RegExpIdentifierName characters
|
|
* only. Also allows numbered backreferences as `\k<n>`.
|
|
*/
|
|
|
|
|
|
XRegExp.addToken(/\\k<([^>]+)>/, function (match) {
|
|
var _context6, _context7;
|
|
|
|
// Groups with the same name is an error, else would need `lastIndexOf`
|
|
var index = isNaN(match[1]) ? (0, _indexOf["default"])(_context6 = this.captureNames).call(_context6, match[1]) + 1 : +match[1];
|
|
var endIndex = match.index + match[0].length;
|
|
|
|
if (!index || index > this.captureNames.length) {
|
|
throw new SyntaxError("Backreference to undefined group ".concat(match[0]));
|
|
} // Keep backreferences separate from subsequent literal numbers. This avoids e.g.
|
|
// inadvertedly changing `(?<n>)\k<n>1` to `()\11`.
|
|
|
|
|
|
return (0, _concat["default"])(_context7 = "\\".concat(index)).call(_context7, endIndex === match.input.length || isNaN(match.input[endIndex]) ? '' : '(?:)');
|
|
}, {
|
|
leadChar: '\\'
|
|
});
|
|
/*
|
|
* Numbered backreference or octal, plus any following digits: `\0`, `\11`, etc. Octals except `\0`
|
|
* not followed by 0-9 and backreferences to unopened capture groups throw an error. Other matches
|
|
* are returned unaltered. IE < 9 doesn't support backreferences above `\99` in regex syntax.
|
|
*/
|
|
|
|
XRegExp.addToken(/\\(\d+)/, function (match, scope) {
|
|
if (!(scope === defaultScope && /^[1-9]/.test(match[1]) && +match[1] <= this.captureNames.length) && match[1] !== '0') {
|
|
throw new SyntaxError("Cannot use octal escape or backreference to undefined group ".concat(match[0]));
|
|
}
|
|
|
|
return match[0];
|
|
}, {
|
|
scope: 'all',
|
|
leadChar: '\\'
|
|
});
|
|
/*
|
|
* Named capturing group; match the opening delimiter only: `(?<name>`. Capture names can use the
|
|
* RegExpIdentifierName characters only. Names can't be integers. Supports Python-style
|
|
* `(?P<name>` as an alternate syntax to avoid issues in some older versions of Opera which natively
|
|
* supported the Python-style syntax. Otherwise, XRegExp might treat numbered backreferences to
|
|
* Python-style named capture as octals.
|
|
*/
|
|
|
|
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D00-\uDD06\uDD08\uDD09\uDD0B-\uDD36\uDD3A\uDD3C\uDD3D\uDD3F-\uDD47\uDD50-\uDD59\uDD60-\uDD65\uDD67\uDD68\uDD6A-\uDD8E\uDD90\uDD91\uDD93-\uDD98\uDDA0-\uDDA9\uDEE0-\uDEF6\uDFB0]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|\uD80B[\uDF90-\uDFF0]|[\uD80C\uD81C-\uD820\uD822\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879\uD880-\uD883][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDE70-\uDEBE\uDEC0-\uDEC9\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDE40-\uDE7F\uDF00-\uDF4A\uDF4F-\uDF87\uDF8F-\uDF9F\uDFE0\uDFE1\uDFE3\uDFE4\uDFF0\uDFF1]|\uD821[\uDC00-\uDFF7]|\uD823[\uDC00-\uDCD5\uDD00-\uDD08]|\uD82B[\uDFF0-\uDFF3\uDFF5-\uDFFB\uDFFD\uDFFE]|\uD82C[\uDC00-\uDD22\uDD50-\uDD52\uDD64-\uDD67\uDD70-\uDEFB]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD833[\uDF00-\uDF2D\uDF30-\uDF46]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD837[\uDF00-\uDF1E]|\uD838[\uDC00-\uDC06\uDC08-\uDC18\uDC1B-\uDC21\uDC23\uDC24\uDC26-\uDC2A\uDD00-\uDD2C\uDD30-\uDD3D\uDD40-\uDD49\uDD4E\uDE90-\uDEAE\uDEC0-\uDEF9]|\uD839[\uDFE0-\uDFE6\uDFE8-\uDFEB\uDFED\uDFEE\uDFF0-\uDFFE]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6\uDD00-\uDD4B\uDD50-\uDD59]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD83E[\uDFF0-\uDFF9]|\uD869[\uDC00-\uDEDF\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF38\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D]|\uD884[\uDC00-\uDF4A]|\uDB40[\uDD00-\uDDEF])*)>/, function (match) {
|
|
var _context8;
|
|
|
|
if (!XRegExp.isInstalled('namespacing') && (match[1] === 'length' || match[1] === '__proto__')) {
|
|
throw new SyntaxError("Cannot use reserved word as capture name ".concat(match[0]));
|
|
}
|
|
|
|
if ((0, _indexOf["default"])(_context8 = this.captureNames).call(_context8, match[1]) !== -1) {
|
|
throw new SyntaxError("Cannot use same name for multiple groups ".concat(match[0]));
|
|
}
|
|
|
|
this.captureNames.push(match[1]);
|
|
this.hasNamedCapture = true;
|
|
return '(';
|
|
}, {
|
|
leadChar: '('
|
|
});
|
|
/*
|
|
* Capturing group; match the opening parenthesis only. Required for support of named capturing
|
|
* groups. Also adds named capture only mode (flag n).
|
|
*/
|
|
|
|
XRegExp.addToken(/\((?!\?)/, function (match, scope, flags) {
|
|
if ((0, _indexOf["default"])(flags).call(flags, 'n') !== -1) {
|
|
return '(?:';
|
|
}
|
|
|
|
this.captureNames.push(null);
|
|
return '(';
|
|
}, {
|
|
optionalFlags: 'n',
|
|
leadChar: '('
|
|
});
|
|
var _default = XRegExp;
|
|
exports["default"] = _default;
|
|
module.exports = exports.default; |