webpack/lib/createFilenameShortener.js

Packs CommonJs Modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loading of js, json, jade, coffee, css, ... out of the box and more with custom loaders.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var path = require("path");

module.exports = function(cwd) {
	var cwd = cwd;
	var cwdParent = path.dirname(cwd);
	var buildins = path.join(__dirname, "..");
	cwd = cwd.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
	cwd = new RegExp("^" + cwd + "|(!)" + cwd, "g");
	var buildinsAsModule = cwd.test(buildins);
	cwdParent = cwdParent.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
	cwdParent = new RegExp("^" + cwdParent + "|(!)" + cwdParent, "g");
	buildins = buildins.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
	buildins = new RegExp("^" + buildins + "|(!)" + buildins, "g");
	var node_modulesRegExpA = /\/node_modules\//g;
	var node_modulesRegExpB = /\\node_modules\\/g;
	var index_jsRegExp = /[\\\/]index.js!/g;
	function compressFilename(filename) {
		if(!filename)
			return filename;
		if(buildinsAsModule)
			filename = filename.replace(buildins, "!(webpack)");
		filename = filename.replace(cwd, "!.");
		if(!buildinsAsModule)
			filename = filename.replace(buildins, "!(webpack)");
		filename = filename.replace(node_modulesRegExpA, "/~/");
		filename = filename.replace(node_modulesRegExpB, "\\~\\");
		filename = filename.replace(index_jsRegExp, "!");
		return filename.replace(/^!|!$/, "");
	}
	return compressFilename;
}