tools/valgrind/memcheck/PRESUBMIT.py

   1 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 """
   6 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
   7 for more details on the presubmit API built into depot_tools.
   8 """
   9
  10 import re
  11
  12 def CheckChange(input_api, output_api):
  13   """Checks the memcheck suppressions files for bad data."""
  14   sup_regex = re.compile('suppressions.*\.txt$')
  15   suppressions = {}
  16   errors = []
  17   check_for_memcheck = False
  18   # skip_next_line has 3 possible values:
  19   # - False: don't skip the next line.
  20   # - 'skip_suppression_name': the next line is a suppression name, skip.
  21   # - 'skip_param': the next line is a system call parameter error, skip.
  22   skip_next_line = False
  23   for f in filter(lambda x: sup_regex.search(x.LocalPath()),
  24                   input_api.AffectedFiles()):
  25     for line, line_num in zip(f.NewContents(),
  26                               xrange(1, len(f.NewContents()) + 1)):
  27       line = line.lstrip()
  28       if line.startswith('#') or not line:
  29         continue
  30
  31       if skip_next_line:
  32         if skip_next_line == 'skip_suppression_name':
  33           if 'insert_a_suppression_name_here' in line:
  34             errors.append('"insert_a_suppression_name_here" is not a valid '
  35                           'suppression name')
  36           if suppressions.has_key(line):
  37             if f.LocalPath() == suppressions[line][1]:
  38               errors.append('suppression with name "%s" at %s line %s '
  39                             'has already been defined at line %s' %
  40                             (line, f.LocalPath(), line_num,
  41                              suppressions[line][1]))
  42             else:
  43               errors.append('suppression with name "%s" at %s line %s '
  44                             'has already been defined at %s line %s' %
  45                             (line, f.LocalPath(), line_num,
  46                              suppressions[line][0], suppressions[line][1]))
  47           else:
  48             suppressions[line] = (f, line_num)
  49             check_for_memcheck = True;
  50         skip_next_line = False
  51         continue
  52       if check_for_memcheck:
  53         if not line.startswith('Memcheck:'):
  54           errors.append('"%s" should be "Memcheck:..." in %s line %s' %
  55                         (line, f.LocalPath(), line_num))
  56         check_for_memcheck = False;
  57       if line == '{':
  58         skip_next_line = 'skip_suppression_name'
  59         continue
  60       if line == "Memcheck:Param":
  61         skip_next_line = 'skip_param'
  62         continue
  63
  64       if (line.startswith('fun:') or line.startswith('obj:') or
  65           line.startswith('Memcheck:') or line == '}' or
  66           line == '...'):
  67         continue
  68       errors.append('"%s" is probably wrong: %s line %s' % (line, f.LocalPath(),
  69                                                             line_num))
  70   if errors:
  71     return [output_api.PresubmitError('\n'.join(errors))]
  72   return []
  73
  74 def CheckChangeOnUpload(input_api, output_api):
  75   return CheckChange(input_api, output_api)
  76
  77 def CheckChangeOnCommit(input_api, output_api):
  78   return CheckChange(input_api, output_api)