mirror of https://github.com/webpack/webpack.git
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
"use strict";
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const path = require("path");
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const looksLikeAbsolutePath = (maybeAbsolutePath) => {
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return /^(?:[a-z]:\\|\/)/i.test(maybeAbsolutePath);
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};
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const normalizePathSeparator = (p) => p.replace(/\\/g, "/");
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const _makePathsRelative = (context, identifier) => {
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return identifier
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.split(/([|! ])/)
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.map(str => looksLikeAbsolutePath(str) ?
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normalizePathSeparator(path.relative(context, str)) : str)
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.join("");
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};
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exports.makePathsRelative = (context, identifier, cache) => {
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if(!cache) return _makePathsRelative(context, identifier);
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const relativePaths = cache.relativePaths || (cache.relativePaths = new Map());
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let cachedResult;
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let contextCache = relativePaths.get(context);
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if(typeof contextCache === "undefined") {
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relativePaths.set(context, contextCache = new Map());
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} else {
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cachedResult = contextCache.get(identifier);
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}
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if(typeof cachedResult !== "undefined") {
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return cachedResult;
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} else {
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const relativePath = _makePathsRelative(context, identifier);
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contextCache.set(identifier, relativePath);
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return relativePath;
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}
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};
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