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codeql-action/node_modules/enhanced-resolve/lib/SymlinkPlugin.js
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/* | |
MIT License http://www.opensource.org/licenses/mit-license.php | |
Author Tobias Koppers @sokra | |
*/ | |
"use strict"; | |
const forEachBail = require("./forEachBail"); | |
const getPaths = require("./getPaths"); | |
const { getType, PathType } = require("./util/path"); | |
/** @typedef {import("./Resolver")} Resolver */ | |
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */ | |
module.exports = class SymlinkPlugin { | |
/** | |
* @param {string | ResolveStepHook} source source | |
* @param {string | ResolveStepHook} target target | |
*/ | |
constructor(source, target) { | |
this.source = source; | |
this.target = target; | |
} | |
/** | |
* @param {Resolver} resolver the resolver | |
* @returns {void} | |
*/ | |
apply(resolver) { | |
const target = resolver.ensureHook(this.target); | |
const fs = resolver.fileSystem; | |
resolver | |
.getHook(this.source) | |
.tapAsync("SymlinkPlugin", (request, resolveContext, callback) => { | |
if (request.ignoreSymlinks) return callback(); | |
const pathsResult = getPaths(request.path); | |
const pathSegments = pathsResult.segments; | |
const paths = pathsResult.paths; | |
let containsSymlink = false; | |
let idx = -1; | |
forEachBail( | |
paths, | |
(path, callback) => { | |
idx++; | |
if (resolveContext.fileDependencies) | |
resolveContext.fileDependencies.add(path); | |
fs.readlink(path, (err, result) => { | |
if (!err && result) { | |
pathSegments[idx] = result; | |
containsSymlink = true; | |
// Shortcut when absolute symlink found | |
const resultType = getType(result.toString()); | |
if ( | |
resultType === PathType.AbsoluteWin || | |
resultType === PathType.AbsolutePosix | |
) { | |
return callback(null, idx); | |
} | |
} | |
callback(); | |
}); | |
}, | |
(err, idx) => { | |
if (!containsSymlink) return callback(); | |
const resultSegments = | |
typeof idx === "number" | |
? pathSegments.slice(0, idx + 1) | |
: pathSegments.slice(); | |
const result = resultSegments.reduceRight((a, b) => { | |
return resolver.join(a, b); | |
}); | |
const obj = { | |
...request, | |
path: result | |
}; | |
resolver.doResolve( | |
target, | |
obj, | |
"resolved symlink to " + result, | |
resolveContext, | |
callback | |
); | |
} | |
); | |
}); | |
} | |
}; |