Use intermediate file containing javac arguments to overcome windows limitations

tools/list_files.py

 #!/usr/bin/env python
 # Copyright (c) 2012, 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.
 
 '''Tool for listing files whose name match a pattern.
 
 Usage:
   python tools/list_files.py PATTERN DIRECTORY...
 '''
 
 import os
 import re
 import sys
 
-
-def main(argv):
-  pattern = re.compile(argv[1])
-  for directory in argv[2:]:
+def list_files(pattern_str, search_directories):
+  pattern = re.compile(pattern_str)
+  found_files = []
+  for directory in search_directories:
     for root, directories, files in os.walk(directory):
       if '.svn' in directories:
         directories.remove('.svn')
       for filename in files:
         fullname = os.path.relpath(os.path.join(root, filename))
         fullname = fullname.replace(os.sep, '/')
         if re.search(pattern, fullname):
-          print fullname
+          found_files.append(fullname)
+  return found_files
 
+def main(argv):
+  pattern_str = argv[1]
+  directories = argv[2:]
+  for filename in list_files(pattern_str, directories):
+    print filename
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))