/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const DescriptionFileUtils = require("./DescriptionFileUtils");
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
module.exports = class DescriptionFilePlugin {
/**
* @param {string | ResolveStepHook} source source
* @param {string[]} filenames filenames
* @param {boolean} pathIsFile pathIsFile
* @param {string | ResolveStepHook} target target
*/
constructor(source, filenames, pathIsFile, target) {
this.source = source;
this.filenames = filenames;
this.pathIsFile = pathIsFile;
this.target = target;
}
/**
* @param {Resolver} resolver the resolver
* @returns {void}
*/
apply(resolver) {
const target = resolver.ensureHook(this.target);
resolver
.getHook(this.source)
.tapAsync(
"DescriptionFilePlugin",
(request, resolveContext, callback) => {
const path = request.path;
if (!path) return callback();
const directory = this.pathIsFile
? DescriptionFileUtils.cdUp(path)
: path;
if (!directory) return callback();
DescriptionFileUtils.loadDescriptionFile(
resolver,
directory,
this.filenames,
request.descriptionFilePath
? {
path: request.descriptionFilePath,
content: request.descriptionFileData,
directory: /** @type {string} */ (request.descriptionFileRoot)
}
: undefined,
resolveContext,
(err, result) => {
if (err) return callback(err);
if (!result) {
if (resolveContext.log)
resolveContext.log(
`No description file found in ${directory} or above`
);
return callback();
}
const relativePath =
"." + path.slice(result.directory.length).replace(/\\/g, "/");
/** @type {ResolveRequest} */
const obj = {
...request,
descriptionFilePath: result.path,
descriptionFileData: result.content,
descriptionFileRoot: result.directory,
relativePath: relativePath
};
resolver.doResolve(
target,
obj,
"using description file: " +
result.path +
" (relative path: " +
relativePath +
")",
resolveContext,
(err, result) => {
if (err) return callback(err);
// Don't allow other processing
if (result === undefined) return callback(null, null);
callback(null, result);
}
);
}
);
}
);
}
};