Touch extracted D3DX9 dll in extract_d3dx9 action.

This was necessary because the Windows expand utility preserves the modification time from the archive. This lead to the extract_d3dx9 action firing repeatedly because the action output was older than the input.

TEST=try
BUG=none

Review URL: http://codereview.chromium.org/3067008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54058 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 27 insertions, 0 deletions

diff --git a/build/extract_from_cab.py b/build/extract_from_cab.py
new file mode 100644
index 0000000..fd99184
--- /dev/null
+++ b/build/extract_from_cab.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# Copyright (c) 2009 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.
+
+# Extracts a single file from a CAB archive.
+
+import os
+import subprocess
+import sys
+
+if len(sys.argv) != 4:
+  print 'Usage: extract_from_cab.py cab_path archived_file output_dir'
+  sys.exit(1)
+
+[cab_path, archived_file, output_dir] = sys.argv[1:]
+
+# Invoke the Windows expand utility to extract the file.
+level = subprocess.call(['expand', cab_path, '-F:' + archived_file, output_dir])
+if level != 0:
+  sys.exit(level)
+
+# The expand utility preserves the modification date and time of the archived
+# file. Touch the extracted file. This helps build systems that compare the
+# modification times of input and output files to determine whether to do an
+# action.
+os.utime(os.path.join(output_dir, archived_file), None)