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Edit File: DescriptionFilePlugin.js

"use strict";
/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
const createInnerCallback = require("./createInnerCallback");
const DescriptionFileUtils = require("./DescriptionFileUtils");

class DescriptionFilePlugin {
	constructor(source, filenames, target) {
		this.source = source;
		this.filenames = [].concat(filenames);
		this.target = target;
	}

apply(resolver) {
		const filenames = this.filenames;
		const target = this.target;
		resolver.plugin(this.source, (request, callback) => {
			const directory = request.path;
			DescriptionFileUtils.loadDescriptionFile(resolver, directory, filenames, ((err, result) => {
				if(err) return callback(err);
				if(!result) {
					if(callback.missing) {
						filenames.forEach((filename) => {
							callback.missing.push(resolver.join(directory, filename));
						});
					}
					if(callback.log) callback.log("No description file found");
					return callback();
				}
				const relativePath = "." + request.path.substr(result.directory.length).replace(/\\/g, "/");
				const obj = Object.assign({}, request, {
					descriptionFilePath: result.path,
					descriptionFileData: result.content,
					descriptionFileRoot: result.directory,
					relativePath: relativePath
				});
				resolver.doResolve(target, obj, "using description file: " + result.path + " (relative path: " + relativePath + ")", createInnerCallback((err, result) => {
					if(err) return callback(err);
					if(result) return callback(null, result);

// Don't allow other description files or none at all
					callback(null, null);
				}, callback));
			}));
		});
	}
}

module.exports = DescriptionFilePlugin;

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