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72 lines
1.9 KiB
Plaintext
72 lines
1.9 KiB
Plaintext
'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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/**
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* @fileoverview Utility to convert gitignore patterns to minimatch.
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* @author Nicholas C. Zakas
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*/
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/**
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* Converts a gitignore pattern to a minimatch pattern.
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* @param {string} pattern The gitignore pattern to convert.
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* @returns {string} A minimatch pattern equivalent to `pattern`.
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*/
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function gitignoreToMinimatch(pattern) {
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if (typeof pattern !== "string") {
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throw new TypeError("Argument must be a string.");
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}
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// Special case: Empty string
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if (!pattern) {
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return pattern;
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}
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// strip off negation to make life easier
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const negated = pattern.startsWith("!");
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let patternToTest = negated ? pattern.slice(1) : pattern;
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let result = patternToTest;
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let leadingSlash = false;
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// strip off leading slash
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if (patternToTest[0] === "/") {
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leadingSlash = true;
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result = patternToTest.slice(1);
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}
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// For the most part, the first character determines what to do
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switch (result[0]) {
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case "*":
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if (patternToTest[1] !== "*") {
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result = "**/" + result;
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}
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break;
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default:
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if (!leadingSlash && !result.includes("/") || result.endsWith("/")) {
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result = "**/" + result;
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}
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// no further changes if the pattern ends with a wildcard
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if (result.endsWith("*") || result.endsWith("?")) {
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break;
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}
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// differentiate between filenames and directory names
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if (!/\.[a-z\d_-]+$/.test(result)) {
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if (!result.endsWith("/")) {
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result += "/";
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}
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result += "**";
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}
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}
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return negated ? "!" + result : result;
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}
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exports.gitignoreToMinimatch = gitignoreToMinimatch;
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