70 lines
1.4 KiB
JavaScript
70 lines
1.4 KiB
JavaScript
'use strict';
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const escapeStringRegexp = require('escape-string-regexp');
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const reCache = new Map();
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function makeRe(pattern, options) {
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const opts = Object.assign({
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caseSensitive: false
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}, options);
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const cacheKey = pattern + JSON.stringify(opts);
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if (reCache.has(cacheKey)) {
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return reCache.get(cacheKey);
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}
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const negated = pattern[0] === '!';
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if (negated) {
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pattern = pattern.slice(1);
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}
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pattern = escapeStringRegexp(pattern).replace(/\\\*/g, '.*');
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const re = new RegExp(`^${pattern}$`, opts.caseSensitive ? '' : 'i');
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re.negated = negated;
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reCache.set(cacheKey, re);
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return re;
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}
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module.exports = (inputs, patterns, options) => {
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if (!(Array.isArray(inputs) && Array.isArray(patterns))) {
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throw new TypeError(`Expected two arrays, got ${typeof inputs} ${typeof patterns}`);
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}
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if (patterns.length === 0) {
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return inputs;
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}
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const firstNegated = patterns[0][0] === '!';
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patterns = patterns.map(x => makeRe(x, options));
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const ret = [];
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for (const input of inputs) {
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// If first pattern is negated we include everything to match user expectation
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let matches = firstNegated;
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for (const pattern of patterns) {
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if (pattern.test(input)) {
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matches = !pattern.negated;
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}
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}
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if (matches) {
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ret.push(input);
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}
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}
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return ret;
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};
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module.exports.isMatch = (input, pattern, options) => {
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const re = makeRe(pattern, options);
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const matches = re.test(input);
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return re.negated ? !matches : matches;
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};
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