mirror of https://github.com/webpack/webpack.git
103 lines
2.8 KiB
JavaScript
103 lines
2.8 KiB
JavaScript
"use strict";
|
|
const path = require("path");
|
|
|
|
/**
|
|
* @typedef {Object} MakeRelativePathsCache
|
|
* @property {Map<string, Map<string, string>>=} relativePaths
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @param {string} maybeAbsolutePath path to check
|
|
* @returns {boolean} returns true if path is "Absolute Path"-like
|
|
*/
|
|
const looksLikeAbsolutePath = maybeAbsolutePath => {
|
|
if (/^\/.*\/$/.test(maybeAbsolutePath)) {
|
|
// this 'path' is actually a regexp generated by dynamic requires.
|
|
// Don't treat it as an absolute path.
|
|
return false;
|
|
}
|
|
return /^(?:[a-z]:\\|\/)/i.test(maybeAbsolutePath);
|
|
};
|
|
|
|
/**
|
|
*
|
|
* @param {string} p path to normalize
|
|
* @returns {string} normalized version of path
|
|
*/
|
|
const normalizePathSeparator = p => p.replace(/\\/g, "/");
|
|
|
|
/**
|
|
*
|
|
* @param {string} context context for relative path
|
|
* @param {string} identifier identifier for path
|
|
* @returns {string} a converted relative path
|
|
*/
|
|
const _makePathsRelative = (context, identifier) => {
|
|
return identifier
|
|
.split(/([|! ])/)
|
|
.map(str =>
|
|
looksLikeAbsolutePath(str)
|
|
? normalizePathSeparator(path.relative(context, str))
|
|
: str
|
|
)
|
|
.join("");
|
|
};
|
|
|
|
/**
|
|
*
|
|
* @param {string} context context used to create relative path
|
|
* @param {string} identifier identifier used to create relative path
|
|
* @param {MakeRelativePathsCache=} cache the cache object being set
|
|
* @returns {string} the returned relative path
|
|
*/
|
|
exports.makePathsRelative = (context, identifier, cache) => {
|
|
if (!cache) return _makePathsRelative(context, identifier);
|
|
|
|
const relativePaths =
|
|
cache.relativePaths || (cache.relativePaths = new Map());
|
|
|
|
let cachedResult;
|
|
let contextCache = relativePaths.get(context);
|
|
if (contextCache === undefined) {
|
|
relativePaths.set(context, (contextCache = new Map()));
|
|
} else {
|
|
cachedResult = contextCache.get(identifier);
|
|
}
|
|
|
|
if (cachedResult !== undefined) {
|
|
return cachedResult;
|
|
} else {
|
|
const relativePath = _makePathsRelative(context, identifier);
|
|
contextCache.set(identifier, relativePath);
|
|
return relativePath;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @param {string} context absolute context path
|
|
* @param {string} request any request string may containing absolute paths, query string, etc.
|
|
* @returns {string} a new request string avoiding absolute paths when possible
|
|
*/
|
|
exports.contextify = (context, request) => {
|
|
return request
|
|
.split("!")
|
|
.map(r => {
|
|
const splitPath = r.split("?", 2);
|
|
if (/^[a-zA-Z]:\\/.test(splitPath[0])) {
|
|
splitPath[0] = path.win32.relative(context, splitPath[0]);
|
|
if (!/^[a-zA-Z]:\\/.test(splitPath[0])) {
|
|
splitPath[0] = splitPath[0].replace(/\\/g, "/");
|
|
}
|
|
}
|
|
if (/^\//.test(splitPath[0])) {
|
|
splitPath[0] = path.posix.relative(context, splitPath[0]);
|
|
}
|
|
if (!/^(\.\.\/|\/|[a-zA-Z]:\\)/.test(splitPath[0])) {
|
|
splitPath[0] = "./" + splitPath[0];
|
|
}
|
|
return splitPath.join("?");
|
|
})
|
|
.join("!");
|
|
};
|