Convert build/linux/install-debian.wheezy.sysroot.wrapper.sh to python for Windows compatibility.

build/linux/install-debian.wheezy.sysroot.wrapper.py

-#!/bin/sh
+#!/usr/bin/env python
 # Copyright (c) 2013 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.
 
 # This wrapper script runs the Debian sysroot installation scripts, if they
 # exist.
 #
 # The script is a no-op except for linux users who have the following in their
 # GYP_DEFINES:
 #
 # * branding=Chrome
 # * buildtype=Official
 # * target_arch=[matching_arch]
 #
 # and not:
 #
 # * chromeos=1
 
-set -e
+import os.path
+import subprocess

[Dan Beam, 2013/05/08 08:33:30]

not sure if we're supposed to be using subproccess or subprocess2 here...

[Lei Zhang, 2013/05/08 08:42:10]

Isn't subprocess2 in depot_tools? Everything in src/build use subprocess.

[Dan Beam, 2013/05/08 09:06:47]

ah, ok, ignore me then

+import sys
 
-SRC_DIR="$(dirname "$0")/../../"
-SCRIPT_DIR="chrome/installer/linux/internal/sysroot_scripts/"
-SCRIPT_FILE="$SRC_DIR/$SCRIPT_DIR/install-debian.wheezy.sysroot.py"
+def main():
+  if sys.platform != 'linux2':
+    return 0
 
-if [ -e "$SCRIPT_FILE" ]; then
-  python "$SCRIPT_FILE" --linux-only --arch=amd64
-  python "$SCRIPT_FILE" --linux-only --arch=i386
-fi
+  SRC_DIR = os.path.dirname(os.path.dirname(os.path.dirname(
+      os.path.realpath(__file__))))

[Dan Beam, 2013/05/08 08:33:30]

this is slightly hacky, but not the end of the world...

  up = os.path.dirname
  SRC_DIR = up(up(up(os.path.realpath(__file__))))

is slightly more readable, IMO

+  SCRIPT_FILE = os.path.join(SRC_DIR,
+                             'chrome',
+                             'installer',
+                             'linux',
+                             'internal',
+                             'sysroot_scripts',
+                             'install-debian.wheezy.sysroot.py')
+  if os.path.exists(SCRIPT_FILE):

[Dan Beam, 2013/05/08 08:33:30]

is it OK that the file doesn't exist?

[Lei Zhang, 2013/05/08 08:42:10]

Yes, see the bash script this converts from.

+    ret = subprocess.call([SCRIPT_FILE, '--linux-only', '--arch=amd64'])

[Dan Beam, 2013/05/08 08:33:30]

most of the scripts I've seen use .communicate to buffer needless output, but it
depends on what you're doing here... ex:
https://code.google.com/p/chromium/codesearch#chromium/tools/depot_tools/git_...

[Lei Zhang, 2013/05/08 08:42:10]

We don't need to process the output.

+    if ret != 0:
+      return ret
+    ret  = subprocess.call([SCRIPT_FILE, '--linux-only', '--arch=i386'])
+    if ret != 0:
+      return ret
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(main())