Heapchecker: Add presubmit checks for suppressions.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/3197014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57132 0039d316-1c4b-4281-b951-d872f2087c98

tools/heapcheck/PRESUBMIT.py

+# Copyright (c) 2010 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.
+
+"""
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details on the presubmit API built into gcl.
+"""
+
+def CheckChange(input_api, output_api):
+  """Checks the memcheck suppressions files for bad data."""
+  errors = []
+  skip_next_line = False
+  func_re = input_api.re.compile('[a-z_.]+\(.+\)$')
+  for f, line_num, line in input_api.RightHandSideLines(lambda x:
+      x.LocalPath().endswith('.txt')):
+    line = line.lstrip()
+    if line.startswith('#') or not line:
+      continue
+
+    if skip_next_line:
+      skip_next_line = False
+      continue
+    if line == '{':
+      skip_next_line = True
+      continue
+    if (line.startswith('fun:') or line.startswith('obj:') or
+        line == 'Heapcheck:Leak' or line == '}' or
+        line == '...'):
+      continue
+    if func_re.match(line):
+      continue
+    errors.append('"%s" is probably wrong: %s line %s' % (line, f.LocalPath(),
+                                                          line_num))
+  if errors:
+    return [output_api.PresubmitError('\n'.join(errors))]
+  return []
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CheckChange(input_api, output_api)
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CheckChange(input_api, output_api)