Adding script to collect metrics for Browser Components.

BUG=138280

Review URL: https://codereview.chromium.org/10968062

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@158628 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 64 insertions, 0 deletions

diff --git a/tools/metrics/browser_components_metrics.py b/tools/metrics/browser_components_metrics.py
new file mode 100755
index 0000000..b841fd2
--- /dev/null
+++ b/tools/metrics/browser_components_metrics.py
@@ -0,0 +1,64 @@
+#!/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.
+
+"""Generates the metrics collected weekly for the Browser Components project.
+
+See
+http://www.chromium.org/developers/design-documents/browser-components
+for details.
+"""
+
+import os
+import sys
+
+
+# This is done so that we can import checkdeps.  If not invoked as
+# main, our user must ensure it is in PYTHONPATH.
+if __name__ == '__main__':
+  sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'checkdeps'))
+
+
+import count_ifdefs
+import checkdeps
+import results
+
+
+# Preprocessor pattern to find OS_XYZ defines.
+PREPROCESSOR_PATTERN = 'OS_[A-Z]+'
+
+
+class BrowserComponentsMetricsGenerator(object):
+  def __init__(self, checkout_root):
+    self.checkout_root = checkout_root
+    self.chrome_browser = os.path.join(checkout_root, 'chrome', 'browser')
+
+  def CountIfdefs(self, skip_tests):
+    return count_ifdefs.CountIfdefs(
+        PREPROCESSOR_PATTERN, self.chrome_browser, skip_tests)
+
+  def CountViolations(self, skip_tests):
+    deps_checker = checkdeps.DepsChecker(self.checkout_root,
+                                         ignore_temp_rules=True,
+                                         skip_tests=skip_tests)
+    deps_checker.results_formatter = results.CountViolationsFormatter()
+    deps_checker.CheckDirectory(os.path.join('chrome', 'browser'))
+    return int(deps_checker.results_formatter.GetResults())
+
+
+def main():
+  generator = BrowserComponentsMetricsGenerator(
+      os.path.join(os.path.dirname(__file__), '..', '..'))
+
+  print "All metrics are for chrome/browser.\n"
+  print "OS ifdefs, all:                   %d" % generator.CountIfdefs(False)
+  print "OS ifdefs, -tests:                %d" % generator.CountIfdefs(True)
+  print ("Intended DEPS violations, all:    %d" %
+         generator.CountViolations(False))
+  print "Intended DEPS violations, -tests: %d" % generator.CountViolations(True)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())