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108 lines
3.3 KiB
108 lines
3.3 KiB
'use strict'; |
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Object.defineProperty(exports, '__esModule', { |
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value: true |
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}); |
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exports.default = globsToMatcher; |
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function _picomatch() { |
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const data = _interopRequireDefault(require('picomatch')); |
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_picomatch = function () { |
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return data; |
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}; |
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return data; |
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} |
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var _replacePathSepForGlob = _interopRequireDefault( |
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require('./replacePathSepForGlob') |
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); |
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function _interopRequireDefault(obj) { |
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return obj && obj.__esModule ? obj : {default: obj}; |
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} |
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/** |
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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*/ |
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const globsToMatchersMap = new Map(); |
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const picomatchOptions = { |
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dot: true |
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}; |
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/** |
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* Converts a list of globs into a function that matches a path against the |
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* globs. |
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* |
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* Every time picomatch is called, it will parse the glob strings and turn |
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* them into regexp instances. Instead of calling picomatch repeatedly with |
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* the same globs, we can use this function which will build the picomatch |
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* matchers ahead of time and then have an optimized path for determining |
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* whether an individual path matches. |
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* |
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* This function is intended to match the behavior of `micromatch()`. |
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* |
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* @example |
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* const isMatch = globsToMatcher(['*.js', '!*.test.js']); |
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* isMatch('pizza.js'); // true |
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* isMatch('pizza.test.js'); // false |
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*/ |
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function globsToMatcher(globs) { |
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if (globs.length === 0) { |
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// Since there were no globs given, we can simply have a fast path here and |
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// return with a very simple function. |
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return () => false; |
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} |
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const matchers = globs.map(glob => { |
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if (!globsToMatchersMap.has(glob)) { |
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const isMatch = (0, _picomatch().default)(glob, picomatchOptions, true); |
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const matcher = { |
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isMatch, |
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// Matchers that are negated have different behavior than matchers that |
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// are not negated, so we need to store this information ahead of time. |
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negated: isMatch.state.negated || !!isMatch.state.negatedExtglob |
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}; |
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globsToMatchersMap.set(glob, matcher); |
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} |
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return globsToMatchersMap.get(glob); |
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}); |
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return path => { |
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const replacedPath = (0, _replacePathSepForGlob.default)(path); |
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let kept = undefined; |
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let negatives = 0; |
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for (let i = 0; i < matchers.length; i++) { |
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const {isMatch, negated} = matchers[i]; |
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if (negated) { |
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negatives++; |
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} |
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const matched = isMatch(replacedPath); |
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if (!matched && negated) { |
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// The path was not matched, and the matcher is a negated matcher, so we |
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// want to omit the path. This means that the negative matcher is |
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// filtering the path out. |
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kept = false; |
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} else if (matched && !negated) { |
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// The path was matched, and the matcher is not a negated matcher, so we |
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// want to keep the path. |
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kept = true; |
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} |
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} // If all of the globs were negative globs, then we want to include the path |
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// as long as it was not explicitly not kept. Otherwise only include |
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// the path if it was kept. This allows sets of globs that are all negated |
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// to allow some paths to be matched, while sets of globs that are mixed |
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// negated and non-negated to cause the negated matchers to only omit paths |
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// and not keep them. |
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return negatives === matchers.length ? kept !== false : !!kept; |
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}; |
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}
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