Detect cygwin as Win32 for the purposes of running GN and downloading from google storage.

download_from_google_storage.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.
 
 """Download files from Google Storage based on SHA1 sums."""
 
 
 import hashlib
 import optparse
@@ skipping 14 matching lines @@
 
 
 class FileNotFoundError(IOError):
   pass
 
 
 class InvalidFileError(IOError):
   pass
 
 
+def GetNormalizedPlatform():
+  """Returns the result of sys.platform accounting for cygwin.
+  Under cygwin, this will always return "win32" like the native Python."""
+  if sys.platform == 'cygwin':
+    return 'win32'
+  return sys.platform
+
+
 # Common utilities
 class Gsutil(object):
   """Call gsutil with some predefined settings.  This is a convenience object,
   and is also immutable."""
   def __init__(self, path, boto_path, timeout=None):
     if not os.path.exists(path):
       raise FileNotFoundError('GSUtil not found in %s' % path)
     self.path = path
     self.timeout = timeout
     self.boto_path = boto_path
@@ skipping 145 matching lines @@
     if code != 0:
       out_q.put('%d> %s' % (thread_num, err))
       ret_codes.put((code, err))
 
     # Mark executable if necessary. We key off of the custom header
     # "x-goog-meta-executable".
     #
     # TODO(hinoka): It is supposedly faster to use "gsutil stat" but that
     # doesn't appear to be supported by the gsutil currently in our tree. When
     # we update, this code should use that instead of "gsutil ls -L".
-    if not sys.platform.startswith('win'):
+    if sys.platform != 'win32':
       code, out, _ = gsutil.check_call('ls', '-L', file_url)
       if code != 0:
         out_q.put('%d> %s' % (thread_num, err))
         ret_codes.put((code, err))
       elif re.search('x-goog-meta-executable:', out):
         st = os.stat(output_filename)
         os.chmod(output_filename, st.st_mode | stat.S_IEXEC)
 
 def printer_worker(output_queue):
   while True:
@@ skipping 175 matching lines @@
     return code
 
   return download_from_google_storage(
       input_filename, base_url, gsutil, options.num_threads, options.directory,
       options.recursive, options.force, options.output, options.ignore_errors,
       options.sha1_file, options.verbose)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))