Move browser_components_metrics.py into a subdirectory of tools/metrics/

tools/metrics/count_ifdefs.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.
-
-"""Counts the number of #if or #ifdef lines containing at least one
-preprocessor token that is a full match for the given pattern, in the
-given directory.
-"""
-
-
-import optparse
-import os
-import re
-import sys
-
-
-# Filename extensions we know will be handled by the C preprocessor.
-# We ignore files not matching these.
-CPP_EXTENSIONS = [
-  '.h',
-  '.cc',
-  '.m',
-  '.mm',
-]
-
-
-def _IsTestFile(filename):
-  """Does a rudimentary check to try to skip test files; this could be
-  improved but is good enough for basic metrics generation.
-  """
-  return re.match('(test|mock|dummy)_.*|.*_[a-z]*test\.(h|cc|mm)', filename)
-
-
-def CountIfdefs(token_pattern, directory, skip_tests=False):
-  """Returns the number of lines in files in |directory| and its
-  subdirectories that have an extension from |CPP_EXTENSIONS| and are
-  an #if or #ifdef line with a preprocessor token fully matching
-  the string |token_pattern|.
-
-  If |skip_tests| is true, a best effort is made to ignore test files.
-  """
-  token_line_re = re.compile(r'^#if(def)?.*\b(%s)\b.*$' % token_pattern)
-  count = 0
-  for root, dirs, files in os.walk(directory):
-    for filename in files:
-      if os.path.splitext(filename)[1] in CPP_EXTENSIONS:
-        if not skip_tests or not _IsTestFile(filename):
-          with open(os.path.join(root, filename)) as f:
-            for line in f:
-              line = line.strip()
-              if token_line_re.match(line):
-                count += 1
-  return count
-
-
-def PrintUsage():
-  print "Usage: %s [--skip-tests] TOKEN_PATTERN DIRECTORY" % sys.argv[0]
-
-
-def main():
-  option_parser = optparse.OptionParser()
-  option_parser.add_option('', '--skip-tests', action='store_true',
-                           dest='skip_tests', default=False,
-                           help='Skip test files.')
-  options, args = option_parser.parse_args()
-
-  if len(args) < 2:
-    PrintUsage()
-    return 1
-  else:
-    print CountIfdefs(args[0], args[1], options.skip_tests)
-    return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main())