def set_metadata_filter()

in aristotle/aristotle.py [0:0]

• 18 lines of code
• 9 McCabe index (conditional complexity)

    def set_metadata_filter(self, metadata_filter):
        """Sets the metadata filter to use.

        :param metadata_filter: A string or a filename of a file that defines the
            desired outcome based on
            Boolean logic, and uses the metadata key-value pairs as values in the
            Boolean algebra.
        :type metadata_filter: string, required
        :raises: `AristotleException`
        """
        try:
            if os.path.isfile(metadata_filter):
                print_debug("Loading metadata_filter file '{}'.".format(metadata_filter))
                self.metadata_filter = ""
                with open(metadata_filter, 'r') as fh:
                    for line in fh:
                        # check for "<enable-all-rules>" directive that enables all rules
                        if line.lstrip().lower().startswith("<enable-all-rules>"):
                            print_debug("Enabling all rules.")
                            self.enable_all_rules = True
                            line = line[len("<enable-all-rules>"):].lstrip()
                        # strip out comments and ignore blank lines
                        if line.strip().startswith('#') or len(line.strip()) == 0:
                            continue
                        self.metadata_filter += line
            else:
                self.metadata_filter = metadata_filter
        except Exception as e:
            print_error("Unable to process metadata_filter '{}':\n{}".format(metadata_filter, e), fatal=True)