Enable whitelist generation for all builds.

tools/resources/find_used_resources.py

-#!/usr/bin/env python
-# Copyright 2014 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.
-
-import argparse
-import os
-import re
-import sys
-
-USAGE = """find_used_resources.py [-h] [-i INPUT] [-o OUTPUT]
-
-Outputs the sorted list of resource ids that are part of unknown pragma warning
-in the given build log.
-
-This script is used to find the resources that are actually compiled in Chrome
-in order to only include the needed strings/images in Chrome PAK files. The
-script parses out the list of used resource ids. These resource ids show up in
-the build output after building Chrome with gyp variable
-enable_resource_whitelist_generation set to 1. This gyp flag causes the compiler
-to print out a UnknownPragma message every time a resource id is used. E.g.:
-foo.cc:22:0: warning: ignoring #pragma whitelisted_resource_12345
-[-Wunknown-pragmas]
-
-On Windows, the message is simply a message via __pragma(message(...)).
-
-"""
-
-COMPONENTS_STRINGS_HEADER = 'gen/components/strings/grit/components_strings.h'
-
-# We don't want the resources are different between 32-bit and 64-bit build,
-# added arch related resources even they are not used.
-ARCH_SPECIFIC_RESOURCES = [
-  'IDS_VERSION_UI_64BIT',
-  'IDS_VERSION_UI_32BIT',
-]
-
-def FindResourceIds(header, resource_names):
-  """Returns the numerical resource IDs that correspond to the given resource
-     names, as #defined in the given header file."
-  """
-  pattern = re.compile(
-      r'^#define (%s) _Pragma\S+ (\d+)$' % '|'.join(resource_names))
-  with open(header, 'r') as f:
-    res_ids = [ int(pattern.match(line).group(2))
-                 for line in f if pattern.match(line) ]
-  if len(res_ids) != len(resource_names):
-    raise Exception('Find resource id failed: the result is ' +
-                    ', '.join(str(i) for i in res_ids))
-  return set(res_ids)
-
-def GetResourceIdsInPragmaWarnings(input):
-  """Returns set of resource ids that are inside unknown pragma warnings
-     for the given input.
-  """
-  used_resources = set()
-  unknown_pragma_warning_pattern = re.compile(
-      'whitelisted_resource_(?P<resource_id>[0-9]+)')
-  for ln in input:
-    match = unknown_pragma_warning_pattern.search(ln)
-    if match:
-      resource_id = int(match.group('resource_id'))
-      used_resources.add(resource_id)
-  return used_resources
-
-def Main():
-  parser = argparse.ArgumentParser(usage=USAGE)
-  parser.add_argument(
-      '-i', '--input', type=argparse.FileType('r'), default=sys.stdin,
-      help='The build log to read (default stdin)')
-  parser.add_argument(
-      '-o', '--output', type=argparse.FileType('w'), default=sys.stdout,
-      help='The resource list path to write (default stdout)')
-  parser.add_argument('--out-dir', required=True,
-      help='The out target directory, for example out/Release')
-
-  args = parser.parse_args()
-
-
-  used_resources = GetResourceIdsInPragmaWarnings(args.input)
-  used_resources |= FindResourceIds(
-      os.path.join(args.out_dir, COMPONENTS_STRINGS_HEADER),
-      ARCH_SPECIFIC_RESOURCES)
-
-  for resource_id in sorted(used_resources):
-    args.output.write('%d\n' % resource_id)
-
-if __name__ == '__main__':
-  Main()