text: /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  "use strict";
  
  const path = require("path");
  
  class RequestShortener {
  	constructor(directory) {
  		directory = directory.replace(/\\/g, "/");
  		if(/[\/\\]$/.test(directory)) directory = directory.substr(0, directory.length - 1);
  
  		if(directory) {
  			const currentDirectoryRegExpString = directory.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
  			this.currentDirectoryRegExp = new RegExp("^" + currentDirectoryRegExpString + "|(!)" + currentDirectoryRegExpString, "g");
  		}
  
  		const dirname = path.dirname(directory);
  		const endsWithSeperator = /[\/\\]$/.test(dirname);
  		const parentDirectory = endsWithSeperator ? dirname.substr(0, dirname.length - 1) : dirname;
  		if(parentDirectory && parentDirectory !== directory) {
  			const parentDirectoryRegExpString = parentDirectory.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
  			this.parentDirectoryRegExp = new RegExp("^" + parentDirectoryRegExpString + "|(!)" + parentDirectoryRegExpString, "g");
  		}
  
  		if(__dirname.length >= 2) {
  			const buildins = path.join(__dirname, "..").replace(/\\/g, "/");
  			const buildinsAsModule = this.currentDirectoryRegExp && this.currentDirectoryRegExp.test(buildins);
  			this.buildinsAsModule = buildinsAsModule;
  			const buildinsRegExpString = buildins.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
  			this.buildinsRegExp = new RegExp("^" + buildinsRegExpString + "|(!)" + buildinsRegExpString, "g");
  		}
  
  		this.indexJsRegExp = /\/index.js(!|\?|\(query\))/g;
  	}
  
  	shorten(request) {
  		if(!request) return request;
  		request = request.replace(/\\/g, "/");
  		if(this.buildinsAsModule && this.buildinsRegExp)
  			request = request.replace(this.buildinsRegExp, "!(webpack)");
  		if(this.currentDirectoryRegExp)
  			request = request.replace(this.currentDirectoryRegExp, "!.");
  		if(this.parentDirectoryRegExp)
  			request = request.replace(this.parentDirectoryRegExp, "!..");
  		if(!this.buildinsAsModule && this.buildinsRegExp)
  			request = request.replace(this.buildinsRegExp, "!(webpack)");
  		request = request.replace(this.indexJsRegExp, "$1");
  		return request.replace(/^!|!$/, "");
  	}
  }
  
  module.exports = RequestShortener;
  