Add an option to scan for incompatible folders to the WebView license tool.

android_webview/tools/webview_licenses.py

 #!/usr/bin/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.
 
 """Checks third-party licenses for the purposes of the Android WebView build.
 
 The Android tree includes a snapshot of Chromium in order to power the system
 WebView.  This tool checks that all code uses open-source licenses compatible
 with Android, and that we meet the requirements of those licenses. It can also
@@ skipping 16 matching lines @@
 REPOSITORY_ROOT = os.path.abspath(os.path.join(
     os.path.dirname(__file__), '..', '..'))
 
 sys.path.append(os.path.join(REPOSITORY_ROOT, 'tools'))
 import licenses
 
 import known_issues
 
 def GetIncompatibleDirectories():
   """Gets a list of third-party directories which use licenses incompatible
-  with Android. This is used by the snapshot tool.
+  with Android. This is used by the snapshot tool and the AOSP bot.
   Returns:
     A list of directories.
   """
 
   whitelist = [
     'Apache( Version)? 2(\.0)?',
     '(New )?([23]-Clause )?BSD( [23]-Clause)?( with advertising clause)?',
     'L?GPL ?v?2(\.[01])?( or later)?',
     'MIT(/X11)?(-like)?',
     'MPL 1\.1 ?/ ?GPL 2(\.0)? ?/ ?LGPL 2\.1',
@@ skipping 227 matching lines @@
     def format_description(self, description):
       paras = description.split('\n')
       formatted_paras = [textwrap.fill(para, self.width) for para in paras]
       return '\n'.join(formatted_paras) + '\n'
 
   parser = optparse.OptionParser(formatter=FormatterWithNewLines(),
                                  usage='%prog [options]')
   parser.description = (__doc__ +
                        '\nCommands:\n' \
                        '  scan  Check licenses.\n' \
-                       '  notice Generate Android NOTICE file on stdout')
-  (options, args) = parser.parse_args()
+                       '  notice Generate Android NOTICE file on stdout. \n' \
+                       '  incompatible_directories Scan for incompatibly'
+                       ' licensed directories.')
+  (_, args) = parser.parse_args()
   if len(args) != 1:
     parser.print_help()
     return ScanResult.Errors
 
   if args[0] == 'scan':
     scan_result = _Scan()
     if scan_result == ScanResult.Ok:
       print 'OK!'
     return scan_result
   elif args[0] == 'notice':
     print GenerateNoticeFile()
     return ScanResult.Ok
+  elif args[0] == 'incompatible_directories':
+    incompatible_directories = GetIncompatibleDirectories()
+    if incompatible_directories:
+      print ("Incompatibly licensed directories found:" +
+             "\n".join(incompatible_directories))
+      return ScanResult.Errors
+    return ScanResult.Ok
 
   parser.print_help()
   return ScanResult.Errors
 
 if __name__ == '__main__':
   sys.exit(main())