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visual_studio/NativeClientVSAddIn/InstallerResources/install.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.
 
 """Copies necessary add-in files into place to install the add-in.
 
 This script will copy the necessary files for the Visual Studio add-in
 to where Visual Studio can find them. It assumes the current directory
 contains the necessary files to copy.
@@ skipping 21 matching lines @@
 ADDIN_FILES = ['NativeClientVSAddIn.AddIn', 'NativeClientVSAddIn.dll']
 
 class InstallError(Exception):
   """Error class for this installer indicating a fatal but expected error."""
   pass
 
 def UninstallDirectory(directory):
   if os.path.exists(directory):
     shutil.rmtree(directory)
     print 'Removed: %s' % (directory)
-  else:
-    print 'Failed to remove non-existant directory: %s' % (directory)
 
 
 def UninstallFile(file_path):
   if os.path.exists(file_path):
     os.remove(file_path)
     print 'Removed: %s' % (file_path)
-  else:
-    print 'Failed to remove non-existant file: %s' % (file_path)
 
 
 def Uninstall(nacl_directory, pepper_directory, addin_directory):
   UninstallDirectory(nacl_directory)
   UninstallDirectory(pepper_directory)
   for file_name in ADDIN_FILES:
     UninstallFile(os.path.join(addin_directory, file_name))
 
 
 def CheckForRunningProgams():
@@ skipping 57 matching lines @@
         if i == 5:
           print "Trying taskkill with /f"
           os.system("taskkill.exe /IM devenv.exe /f")
       if CheckForRunningProgams():
         raise InstallError('Failed to kill Visual Studio and MSBuild instances')
 
   if sys.version_info < (2, 6, 2):
     print "\n\nWARNING: Only python version 2.6.2 or greater is supported. " \
           "Current version is %s\n\n" % (sys.version_info[:3],)
 
-  # Admin is needed to write to the default platform directory.
-  if ctypes.windll.shell32.IsUserAnAdmin() != 1:
-    raise InstallError("Not running as administrator. The install script needs "
-                       "write access to protected Visual Studio directories.")
-
   # Ensure install directories exist.
   if not os.path.exists(options.vsuser_path):
     raise InstallError("Could not find user Visual Studio directory: %s" % (
         options.vsuser_path))
   if not os.path.exists(options.msbuild_path):
     raise InstallError("Could not find MS Build directory: %s" % (
         options.msbuild_path))
 
   addin_directory = os.path.join(options.vsuser_path, 'Addins')
-  platform_directory = os.path.join(
-      options.msbuild_path, 'Microsoft.Cpp\\v4.0\\Platforms')
-  nacl_directory = os.path.join(platform_directory, NACL_PLATFORM_NAME)
-  pepper_directory = os.path.join(platform_directory, PEPPER_PLATFORM_NAME)
+  platform_root = os.path.join(options.msbuild_path,
+                               'Microsoft.Cpp', 'v4.0', 'Platforms')
+  if not os.path.exists(platform_root):
+    raise InstallError("Could not find path: %s" % platform_root)
+
+  if (not os.access(addin_directory, os.W_OK)
+     or not os.access(platform_root, os.W_OK)):
+    # Admin is needed to write to the default platform directory.
+    if ctypes.windll.shell32.IsUserAnAdmin() != 1:
+      raise InstallError("Not running as administrator. The install script "
+                         "needs write access to protected Visual Studio "
+                         "directories.")
+    raise InstallError("install script needs write access to: %s"
+                       % platform_root)
+
+  nacl_directory = os.path.join(platform_root, NACL_PLATFORM_NAME)
+  pepper_directory = os.path.join(platform_root, PEPPER_PLATFORM_NAME)
 
   # If uninstalling then redirect to uninstall program.
   if options.uninstall:
     Uninstall(nacl_directory, pepper_directory, addin_directory)
     print "\nUninstall complete!\n"
     sys.exit(0)
 
-  if not os.path.exists(platform_directory):
-    raise InstallError("Could not find path: %s" % platform_directory)
+  if not os.path.exists(platform_root):
+    raise InstallError("Could not find path: %s" % platform_root)
   if not os.path.exists(addin_directory):
     os.mkdir(addin_directory)
 
   # Ensure environment variables are set.
   nacl_sdk_root = os.getenv('NACL_SDK_ROOT', None)
   chrome_path = os.getenv('CHROME_PATH', None)
   if nacl_sdk_root is None:
     raise InstallError('Environment Variable NACL_SDK_ROOT is not set')
   if chrome_path is None:
     raise InstallError('Environment Variable CHROME_PATH is not set')
@@ skipping 53 matching lines @@
     print e
   except shutil.Error as e:
     print "Error while copying file. Please ensure file is not in use."
     print e
   except WindowsError as e:
     if e.winerror == 5:
       print "Access denied error.  Please ensure Visual Studio and MSBuild"
       print "processes are closed."
     else:
       raise
-