def ProcessConfigOverrides()

in cpplint.py [0:0]

• 58 lines of code
• 15 McCabe index (conditional complexity)

def ProcessConfigOverrides(filename):
    """ Loads the configuration files and processes the config overrides.

  Args:
    filename: The name of the file being processed by the linter.

  Returns:
    False if the current |filename| should not be processed further.
  """

    abs_filename = os.path.abspath(filename)
    cfg_filters = []
    keep_looking = True
    while keep_looking:
        abs_path, base_name = os.path.split(abs_filename)
        if not base_name:
            break  # Reached the root directory.

        cfg_file = os.path.join(abs_path, "CPPLINT.cfg")
        abs_filename = abs_path
        if not os.path.isfile(cfg_file):
            continue

        try:
            with open(cfg_file) as file_handle:
                for line in file_handle:
                    line, _, _ = line.partition('#')  # Remove comments.
                    if not line.strip():
                        continue

                    name, _, val = line.partition('=')
                    name = name.strip()
                    val = val.strip()
                    if name == 'set noparent':
                        keep_looking = False
                    elif name == 'filter':
                        cfg_filters.append(val)
                    elif name == 'exclude_files':
                        # When matching exclude_files pattern, use the base_name of
                        # the current file name or the directory name we are processing.
                        # For example, if we are checking for lint errors in /foo/bar/baz.cc
                        # and we found the .cfg file at /foo/CPPLINT.cfg, then the config
                        # file's "exclude_files" filter is meant to be checked against "bar"
                        # and not "baz" nor "bar/baz.cc".
                        if base_name:
                            pattern = re.compile(val)
                            if pattern.match(base_name):
                                if _cpplint_state.quiet:
                                    # Suppress "Ignoring file" warning when using --quiet.
                                    return False
                                sys.stderr.write('Ignoring "%s": file excluded by "%s". '
                                                 'File path component "%s" matches '
                                                 'pattern "%s"\n' %
                                                 (filename, cfg_file, base_name, val))
                                return False
                    elif name == 'linelength':
                        global _line_length
                        try:
                            _line_length = int(val)
                        except ValueError:
                            sys.stderr.write('Line length must be numeric.')
                    elif name == 'root':
                        global _root
                        # root directories are specified relative to CPPLINT.cfg dir.
                        _root = os.path.join(os.path.dirname(cfg_file), val)
                    elif name == 'headers':
                        ProcessHppHeadersOption(val)
                    else:
                        sys.stderr.write(
                            'Invalid configuration option (%s) in file %s\n' %
                            (name, cfg_file))

        except IOError:
            sys.stderr.write(
                "Skipping config file '%s': Can't open for reading\n" % cfg_file)
            keep_looking = False

    # Apply all the accumulated filters in reverse order (top-level directory
    # config options having the least priority).
    for filter in reversed(cfg_filters):
        _AddFilters(filter)

    return True