m2r.py 文件源码

def run(self):
        """Most of this method is from ``docutils.parser.rst.Directive``.

        docutils version: 0.12
        """
        if not self.state.document.settings.file_insertion_enabled:
            raise self.warning('"%s" directive disabled.' % self.name)
        source = self.state_machine.input_lines.source(
            self.lineno - self.state_machine.input_offset - 1)
        source_dir = os.path.dirname(os.path.abspath(source))
        path = rst.directives.path(self.arguments[0])
        path = os.path.normpath(os.path.join(source_dir, path))
        path = utils.relative_path(None, path)
        path = nodes.reprunicode(path)

        # get options (currently not use directive-specific options)
        encoding = self.options.get(
            'encoding', self.state.document.settings.input_encoding)
        e_handler = self.state.document.settings.input_encoding_error_handler
        tab_width = self.options.get(
            'tab-width', self.state.document.settings.tab_width)

        # open the inclding file
        try:
            self.state.document.settings.record_dependencies.add(path)
            include_file = io.FileInput(source_path=path,
                                        encoding=encoding,
                                        error_handler=e_handler)
        except UnicodeEncodeError as error:
            raise self.severe('Problems with "%s" directive path:\n'
                              'Cannot encode input file path "%s" '
                              '(wrong locale?).' %
                              (self.name, SafeString(path)))
        except IOError as error:
            raise self.severe('Problems with "%s" directive path:\n%s.' %
                              (self.name, ErrorString(error)))

        # read from the file
        try:
            rawtext = include_file.read()
        except UnicodeError as error:
            raise self.severe('Problem with "%s" directive:\n%s' %
                              (self.name, ErrorString(error)))

        config = self.state.document.settings.env.config
        converter = M2R(no_underscore_emphasis=config.no_underscore_emphasis)
        include_lines = statemachine.string2lines(converter(rawtext),
                                                  tab_width,
                                                  convert_whitespace=True)
        self.state_machine.insert_input(include_lines, path)
        return []