add filename filter

Author: lcxfs1991

README.md

@@ -64,6 +64,15 @@ new ExtractTextPlugin(options: filename | object)
 * `options.allChunks: boolean` extract from all additional chunks too (by default it extracts only from the initial chunk(s))
 * `options.disable: boolean` disables the plugin
 * `options.id: string` Unique ident for this plugin instance. (For advanced usage only, by default automatically generated)
+* `filenamefilter` function to modify path and filename before files are emitted
+```
+{
+  filenamefilter: function(filename) {
+    // modify filename
+    return filename;
+  }
+}
+```
 
 The `ExtractTextPlugin` generates an output file per entry, so you must use `[name]`, `[id]` or `[contenthash]` when using multiple entries.
 

index.js

@@ -309,6 +309,7 @@ ExtractTextPlugin.prototype.apply = function(compiler) {
 					}).replace(/\[(?:(\w+):)?contenthash(?::([a-z]+\d*))?(?::(\d+))?\]/ig, function() {
 						return loaderUtils.getHashDigest(source.source(), arguments[1], arguments[2], parseInt(arguments[3], 10));
 					});
+					file = (options.filenamefilter) ? options.filenamefilter(file) : file;
 					compilation.assets[file] = source;
 					chunk.files.push(file);
 				}

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "extract-text-webpack-plugin",
+  "name": "extract-text-webpack-plugin-steamer",
   "version": "2.0.0-beta.5",
   "author": "Tobias Koppers @sokra",
   "description": "Extract text from bundle into a file.",