Finish details of newlib install

toolchain_build/command.py

 #!/usr/bin/python
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Class capturing a command invocation as data."""
 
 
 # Done first to setup python module path.
 import toolchain_env
@@ skipping 109 matching lines @@
   # TODO(bradnelson): Replace with something less hacky.
   return Command([
       sys.executable, '-c',
       'import sys,shutil; shutil.copyfile(sys.argv[1], sys.argv[2])', src, dst])
 
 
 def RemoveDirectory(path):
   """Convenience method for generating a command to remove a directory tree."""
   # TODO(mcgrathr): Windows
   return Command(['rm', '-rf', path])
+
+
+def Remove(path):
+  """Convenience method for generating a command to remove a file."""
+  # TODO(mcgrathr): Replace with something less hacky.
+  return Command([
+      sys.executable, '-c',
+      'import sys, os; os.remove(sys.argv[1])', path
+      ])
+
+
+def Rename(src, dst):
+  """Convenience method for generating a command to rename a file."""
+  # TODO(mcgrathr): Replace with something less hacky.
+  return Command([
+      sys.executable, '-c',
+      'import sys, os; os.rename(sys.argv[1], sys.argv[2])', src, dst
+      ])
+
+
+def WriteData(data, dst):
+  """Convenience method to write a file with fixed contents."""
+  # TODO(mcgrathr): Replace with something less hacky.
+  return Command([
+      sys.executable, '-c',
+      'import sys; open(sys.argv[1], "wb").write(%r)' % data, dst
+      ])