75 lines
1.9 KiB
Plaintext
75 lines
1.9 KiB
Plaintext
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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function _export(target, all) {
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for(var name in all)Object.defineProperty(target, name, {
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enumerable: true,
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get: all[name]
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});
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}
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_export(exports, {
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pattern: function() {
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return pattern;
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},
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withoutCapturing: function() {
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return withoutCapturing;
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},
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any: function() {
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return any;
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},
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optional: function() {
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return optional;
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},
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zeroOrMore: function() {
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return zeroOrMore;
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},
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nestedBrackets: function() {
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return nestedBrackets;
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},
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escape: function() {
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return escape;
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}
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});
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const REGEX_SPECIAL = /[\\^$.*+?()[\]{}|]/g;
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const REGEX_HAS_SPECIAL = RegExp(REGEX_SPECIAL.source);
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/**
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* @param {string|RegExp|Array<string|RegExp>} source
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*/ function toSource(source) {
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source = Array.isArray(source) ? source : [
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source
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];
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source = source.map((item)=>item instanceof RegExp ? item.source : item);
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return source.join("");
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}
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function pattern(source) {
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return new RegExp(toSource(source), "g");
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}
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function withoutCapturing(source) {
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return new RegExp(`(?:${toSource(source)})`, "g");
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}
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function any(sources) {
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return `(?:${sources.map(toSource).join("|")})`;
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}
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function optional(source) {
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return `(?:${toSource(source)})?`;
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}
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function zeroOrMore(source) {
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return `(?:${toSource(source)})*`;
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}
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function nestedBrackets(open, close, depth = 1) {
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return withoutCapturing([
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escape(open),
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/[^\s]*/,
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depth === 1 ? `[^${escape(open)}${escape(close)}\s]*` : any([
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`[^${escape(open)}${escape(close)}\s]*`,
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nestedBrackets(open, close, depth - 1)
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]),
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/[^\s]*/,
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escape(close)
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]);
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}
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function escape(string) {
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return string && REGEX_HAS_SPECIAL.test(string) ? string.replace(REGEX_SPECIAL, "\\$&") : string || "";
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}
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