components/tools/metrics/browser_components_metrics.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Generates the metrics collected weekly for the Browser Components project.
   7
   8 See
   9 http://www.chromium.org/developers/design-documents/browser-components
  10 for details.
  11 """
  12
  13 import os
  14 import sys
  15
  16
  17 # This is done so that we can import checkdeps.  If not invoked as
  18 # main, our user must ensure it is in PYTHONPATH.
  19 if __name__ == '__main__':
  20   sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', '..',
  21                                'buildtools', 'checkdeps'))
  22
  23
  24 import count_ifdefs
  25 import checkdeps
  26 import results
  27
  28
  29 # Preprocessor pattern to find OS_XYZ defines.
  30 PREPROCESSOR_PATTERN = 'OS_[A-Z]+'
  31
  32
  33 class BrowserComponentsMetricsGenerator(object):
  34   def __init__(self, checkout_root):
  35     self.checkout_root = checkout_root
  36     self.chrome_browser = os.path.join(checkout_root, 'chrome', 'browser')
  37
  38   def CountIfdefs(self, skip_tests):
  39     return count_ifdefs.CountIfdefs(
  40         PREPROCESSOR_PATTERN, self.chrome_browser, skip_tests)
  41
  42   def CountViolations(self, skip_tests):
  43     deps_checker = checkdeps.DepsChecker(self.checkout_root,
  44                                          ignore_temp_rules=True,
  45                                          skip_tests=skip_tests)
  46     deps_checker.results_formatter = results.CountViolationsFormatter()
  47     deps_checker.CheckDirectory(os.path.join('chrome', 'browser'))
  48     return int(deps_checker.results_formatter.GetResults())
  49
  50
  51 def main():
  52   generator = BrowserComponentsMetricsGenerator(
  53       os.path.join(os.path.dirname(__file__), '..', '..', '..'))
  54
  55   print "All metrics are for chrome/browser.\n"
  56   print "OS ifdefs, all:                   %d" % generator.CountIfdefs(False)
  57   print "OS ifdefs, -tests:                %d" % generator.CountIfdefs(True)
  58   print ("Intended DEPS violations, all:    %d" %
  59          generator.CountViolations(False))
  60   print "Intended DEPS violations, -tests: %d" % generator.CountViolations(True)
  61   return 0
  62
  63
  64 if __name__ == '__main__':
  65   sys.exit(main())