michael@0: #!/usr/bin/env python
michael@0: # Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.
michael@0: #
michael@0: # Use of this source code is governed by a BSD-style license
michael@0: # that can be found in the LICENSE file in the root of the source
michael@0: # tree. An additional intellectual property rights grant can be found
michael@0: # in the file PATENTS.  All contributing project authors may
michael@0: # be found in the AUTHORS file in the root of the source tree.
michael@0: 
michael@0: """
michael@0: Copied from Chrome's src/tools/valgrind/memcheck/PRESUBMIT.py
michael@0: 
michael@0: See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
michael@0: for more details on the presubmit API built into gcl.
michael@0: """
michael@0: 
michael@0: import os
michael@0: import re
michael@0: import sys
michael@0: 
michael@0: def CheckChange(input_api, output_api):
michael@0:   """Checks the memcheck suppressions files for bad data."""
michael@0: 
michael@0:   # Add the path to the Chrome valgrind dir to the import path:
michael@0:   tools_vg_path = os.path.join(input_api.PresubmitLocalPath(), '..', '..',
michael@0:                                'valgrind')
michael@0:   sys.path.append(tools_vg_path)
michael@0:   import suppressions
michael@0: 
michael@0:   sup_regex = re.compile('suppressions.*\.txt$')
michael@0:   suppressions = {}
michael@0:   errors = []
michael@0:   check_for_memcheck = False
michael@0:   # skip_next_line has 3 possible values:
michael@0:   # - False: don't skip the next line.
michael@0:   # - 'skip_suppression_name': the next line is a suppression name, skip.
michael@0:   # - 'skip_param': the next line is a system call parameter error, skip.
michael@0:   skip_next_line = False
michael@0:   for f in filter(lambda x: sup_regex.search(x.LocalPath()),
michael@0:                   input_api.AffectedFiles()):
michael@0:     for line, line_num in zip(f.NewContents(),
michael@0:                               xrange(1, len(f.NewContents()) + 1)):
michael@0:       line = line.lstrip()
michael@0:       if line.startswith('#') or not line:
michael@0:         continue
michael@0: 
michael@0:       if skip_next_line:
michael@0:         if skip_next_line == 'skip_suppression_name':
michael@0:           if 'insert_a_suppression_name_here' in line:
michael@0:             errors.append('"insert_a_suppression_name_here" is not a valid '
michael@0:                           'suppression name')
michael@0:           if suppressions.has_key(line):
michael@0:             if f.LocalPath() == suppressions[line][1]:
michael@0:               errors.append('suppression with name "%s" at %s line %s '
michael@0:                             'has already been defined at line %s' %
michael@0:                             (line, f.LocalPath(), line_num,
michael@0:                              suppressions[line][1]))
michael@0:             else:
michael@0:               errors.append('suppression with name "%s" at %s line %s '
michael@0:                             'has already been defined at %s line %s' %
michael@0:                             (line, f.LocalPath(), line_num,
michael@0:                              suppressions[line][0], suppressions[line][1]))
michael@0:           else:
michael@0:             suppressions[line] = (f, line_num)
michael@0:             check_for_memcheck = True;
michael@0:         skip_next_line = False
michael@0:         continue
michael@0:       if check_for_memcheck:
michael@0:         if not line.startswith('Memcheck:'):
michael@0:           errors.append('"%s" should be "Memcheck:..." in %s line %s' %
michael@0:                         (line, f.LocalPath(), line_num))
michael@0:         check_for_memcheck = False;
michael@0:       if line == '{':
michael@0:         skip_next_line = 'skip_suppression_name'
michael@0:         continue
michael@0:       if line == "Memcheck:Param":
michael@0:         skip_next_line = 'skip_param'
michael@0:         continue
michael@0: 
michael@0:       if (line.startswith('fun:') or line.startswith('obj:') or
michael@0:           line.startswith('Memcheck:') or line == '}' or
michael@0:           line == '...'):
michael@0:         continue
michael@0:       errors.append('"%s" is probably wrong: %s line %s' % (line, f.LocalPath(),
michael@0:                                                             line_num))
michael@0:   if errors:
michael@0:     return [output_api.PresubmitError('\n'.join(errors))]
michael@0:   return []
michael@0: 
michael@0: def CheckChangeOnUpload(input_api, output_api):
michael@0:   return CheckChange(input_api, output_api)
michael@0: 
michael@0: def CheckChangeOnCommit(input_api, output_api):
michael@0:   return CheckChange(input_api, output_api)
michael@0: 
michael@0: def GetPreferredTrySlaves():
michael@0:   # We don't have any memcheck slaves yet, so there's no use for this method.
michael@0:   # When we have, the slave name(s) should be put into this list.
michael@0:   return []