tools/sort_sources.py: sort C++ source file names in build files.

tools/sort-headers.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Given a filename as an argument, sort the #include/#imports in that file.
 
 Shows a diff and prompts for confirmation before doing the deed.
 Works great with tools/git/for-all-touched-files.py.
 """
 
 import optparse
 import os
 import sys
 
-
-def YesNo(prompt):
-  """Prompts with a yes/no question, returns True if yes."""
-  print prompt,
-  sys.stdout.flush()
-  # http://code.activestate.com/recipes/134892/
-  if sys.platform == 'win32':
-    import msvcrt
-    ch = msvcrt.getch()
-  else:
-    import termios
-    import tty
-    fd = sys.stdin.fileno()
-    old_settings = termios.tcgetattr(fd)
-    ch = 'n'
-    try:
-      tty.setraw(sys.stdin.fileno())
-      ch = sys.stdin.read(1)
-    finally:
-      termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
-  print ch
-  return ch in ('Y', 'y')
+from yes_no import YesNo
 
 
 def IncludeCompareKey(line):
   """Sorting comparator key used for comparing two #include lines.
   Returns the filename without the #include/#import/import prefix.
   """
   for prefix in ('#include ', '#import ', 'import '):
     if line.startswith(prefix):
       line = line[len(prefix):]
       break
@@ skipping 131 matching lines @@
   if len(filenames) < 1:
     parser.print_help()
     return 1
 
   for filename in filenames:
     DiffAndConfirm(filename, opts.should_confirm, opts.perform_safety_checks)
 
 
 if __name__ == '__main__':
   sys.exit(main())