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      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 gcl.
      8 """
      9 
     10 import re
     11 
     12 def CheckChange(input_api, output_api):
     13   """Checks the heapcheck suppressions files for bad data."""
     14   sup_regex = re.compile('suppressions.*\.txt$')
     15   suppressions = {}
     16   errors = []
     17   check_for_heapcheck = False
     18   skip_next_line = False
     19   for f in filter(lambda x: sup_regex.search(x.LocalPath()),
     20                   input_api.AffectedFiles()):
     21     for line, line_num in zip(f.NewContents(),
     22                               xrange(1, len(f.NewContents()) + 1)):
     23       line = line.lstrip()
     24       if line.startswith('#') or not line:
     25         continue
     26 
     27       if skip_next_line:
     28         if 'insert_a_suppression_name_here' in line:
     29           errors.append('"insert_a_suppression_name_here" is not a valid '
     30                         'suppression name')
     31         if suppressions.has_key(line):
     32           errors.append('suppression with name "%s" at %s line %s has already '
     33                         'been defined at line %s' % (line, f.LocalPath(),
     34                                                      line_num,
     35                                                      suppressions[line][1]))
     36         else:
     37           suppressions[line] = (f, line_num)
     38           check_for_heapcheck = True
     39         skip_next_line = False
     40         continue
     41       if check_for_heapcheck:
     42         if not line == 'Heapcheck:Leak':
     43           errors.append('"%s" should be "Heapcheck:Leak" in %s line %s' %
     44                         (line, f.LocalPath(), line_num))
     45         check_for_heapcheck = False;
     46       if line == '{':
     47         skip_next_line = True
     48         continue
     49       if (line.startswith('fun:') or line.startswith('obj:') or
     50           line == 'Heapcheck:Leak' or line == '}' or
     51           line == '...'):
     52         continue
     53       errors.append('"%s" is probably wrong: %s line %s' % (line, f.LocalPath(),
     54                                                             line_num))
     55   if errors:
     56     return [output_api.PresubmitError('\n'.join(errors))]
     57   return []
     58 
     59 def CheckChangeOnUpload(input_api, output_api):
     60   return CheckChange(input_api, output_api)
     61 
     62 def CheckChangeOnCommit(input_api, output_api):
     63   return CheckChange(input_api, output_api)
     64