Write binstubs using the system encoding.

lib/src/io.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Helper functionality to make working with IO easier.
 library pub.io;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
@@ skipping 147 matching lines @@
   log.io("Reading binary file $file.");
   var contents = new File(file).readAsBytesSync();
   log.io("Read ${contents.length} bytes from $file.");
   return contents;
 }
 
 /// Creates [file] and writes [contents] to it.
 ///
 /// If [dontLogContents] is true, the contents of the file will never be logged.
 String writeTextFile(String file, String contents,
-  {bool dontLogContents: false}) {
+    {bool dontLogContents: false, Encoding encoding}) {
+  if (encoding == null) encoding = UTF8;
+
   // Sanity check: don't spew a huge file.
   log.io("Writing ${contents.length} characters to text file $file.");
   if (!dontLogContents && contents.length < 1024 * 1024) {
     log.fine("Contents:\n$contents");
   }
 
-  new File(file).writeAsStringSync(contents);
+  new File(file).writeAsStringSync(contents, encoding: encoding);
   return file;
 }
 
 /// Creates [file] and writes [contents] to it.
 String writeBinaryFile(String file, List<int> contents) {
   log.io("Writing ${contents.length} bytes to binary file $file.");
   new File(file).openSync(mode: FileMode.WRITE)
       ..writeFromSync(contents)
       ..closeSync();
   log.fine("Wrote text file $file.");
@@ skipping 863 matching lines @@
 
   // TODO(rnystrom): Remove this and change to returning one string.
   static List<String> _toLines(String output) {
     var lines = splitLines(output);
     if (!lines.isEmpty && lines.last == "") lines.removeLast();
     return lines;
   }
 
   bool get success => exitCode == exit_codes.SUCCESS;
 }