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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const getPaths = require("./getPaths");
const forEachBail = require("./forEachBail");
module.exports = class SymlinkPlugin {
constructor(source, target) {
this.source = source;
this.target = target;
}
apply(resolver) {
const target = resolver.ensureHook(this.target);
const fs = resolver.fileSystem;
resolver.getHook(this.source).tapAsync("SymlinkPlugin", (request, resolveContext, callback) => {
const pathsResult = getPaths(request.path);
const pathSeqments = pathsResult.seqments;
const paths = pathsResult.paths;
let containsSymlink = false;
forEachBail.withIndex(paths, (path, idx, callback) => {
fs.readlink(path, (err, result) => {
if(!err && result) {
pathSeqments[idx] = result;
containsSymlink = true;
// Shortcut when absolute symlink found
if(/^(\/|[a-zA-Z]:($|\\))/.test(result))
return callback(null, idx);
}
callback();
});
}, (err, idx) => {
if(!containsSymlink) return callback();
const resultSeqments = typeof idx === "number" ? pathSeqments.slice(0, idx + 1) : pathSeqments.slice();
const result = resultSeqments.reverse().reduce((a, b) => {
return resolver.join(a, b);
});
const obj = Object.assign({}, request, {
path: result
});
resolver.doResolve(target, obj, "resolved symlink to " + result, resolveContext, callback);
});
});
}
};
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