Add a variable use_system_xcode to GN.

chrome/app/nibs/generate_localizer.py

 #!/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.
 
 # Usage: generate_localizer [xib_path] [output_dot_h_path] [output_dot_mm_path]
 #
 # Extracts all the localizable strings that start with "^IDS" from the given
 # xib file, and then generates a localizer to process those strings.
 
+
+import argparse
+import logging
 import os
 import plistlib
 import subprocess
 import sys
 
 generate_localizer = "me"
 
 localizer_template_h = \
 '''//          ---------- WARNING ----------
 // THIS IS A GENERATED FILE, DO NOT EDIT IT DIRECTLY!
 //
 // This header includes the table used by ui_localizer.mm.  Nothing else should
 // be including this file.
 //
 // Generated by %(generate_localizer)s.
 // Generated from:
 //     %(xib_files)s
 //
 
 #ifndef CHROME_APP_NIBS_LOCALIZER_TABLE_H_
 #define CHROME_APP_NIBS_LOCALIZER_TABLE_H_
 
 static const UILocalizerResourceMap kUIResources[] = {
 %(resource_map_list)s  };
 static const size_t kUIResourcesSize = arraysize(kUIResources);
 
 #endif  // CHROME_APP_NIBS_LOCALIZER_TABLE_H_
 '''
 
-def xib_localizable_strings(xib_path):
+def xib_localizable_strings(xib_path, xcode_path):
   """Runs ibtool to extract the localizable strings data from the xib."""
   # Take SDKROOT out of the environment passed to ibtool. ibtool itself has
   # no need for it, but when ibtool runs via xcrun and Xcode isn't aware of
   # the SDK in use, its presence causes an error.
+  ibtool_env = os.environ.copy()
   if 'SDKROOT' in os.environ:
-    ibtool_env = os.environ.copy()
     del ibtool_env['SDKROOT']
-  else:
-    ibtool_env = os.environ
+  if xcode_path:
+    ibtool_env['DEVELOPER_DIR'] = xcode_path
 
-  ibtool_cmd = subprocess.Popen(['xcrun', 'ibtool',
-                                 '--localizable-strings', xib_path],
+  command = ['xcrun', 'ibtool', '--localizable-strings', xib_path]
+  ibtool_cmd = subprocess.Popen(command,
                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                                 env=ibtool_env)
   (cmd_out, cmd_err) = ibtool_cmd.communicate()
   if ibtool_cmd.returncode:
     sys.stderr.write('%s:0: error: ibtool on "%s" failed (%d):\n%s\n' %
                      (generate_localizer, xib_path, ibtool_cmd.returncode,
                       cmd_err))
     return None
   return cmd_out
 
@@ skipping 33 matching lines @@
     'xib_files': "\n//     ".join(xib_paths),
   }
   h_file = localizer_template_h % values_dict
   return h_file
 
 
 def Main(argv=None):
   global generate_localizer
   generate_localizer = os.path.basename(argv[0])
 
-  # Args
-  if len(argv) < 3:
-    sys.stderr.write('%s:0: error: Expected output file and then xibs\n' %
-                     generate_localizer);
-    return 1
-  output_path = argv[1];
-  xib_paths = argv[2:]
+  parser = argparse.ArgumentParser(
+      description='Generates a header file that localizes libs.')
+  parser.add_argument('--output_path', required=True,
+                      help='Path to output header file.')
+  parser.add_argument('--developer_dir', required=False,
+                      help='Path to Xcode.')
+  parser.add_argument('xibs', nargs='+',
+                      help='A list of xibs to localize')
+  args = parser.parse_args()
+
+  output_path = args.output_path
+  xib_paths = args.xibs
 
   full_constants_list = []
   for xib_path in xib_paths:
     # Run ibtool and convert to something Python can deal with
-    plist_string = xib_localizable_strings(xib_path)
+    plist_string = xib_localizable_strings(xib_path, args.developer_dir)
     if not plist_string:
       return 2
     plist = plistlib.readPlistFromString(plist_string)
 
     # Extract the resource constant strings
     localizable_strings = plist['com.apple.ibtool.document.localizable-strings']
     constants_list = extract_resource_constants(localizable_strings, xib_path)
     if not constants_list:
       sys.stderr.write("%s:0: warning: %s didn't find any resource strings\n" %
                        (xib_path, generate_localizer));
     full_constants_list.extend(constants_list)
 
   # Generate our file contents
   h_file_content = \
       generate_file_contents(full_constants_list, xib_paths)
 
   # Write out the file
   file_fd = open(output_path, 'w')
   file_fd.write(h_file_content)
   file_fd.close()
 
   return 0
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))