Beispiel #1
0
 def make_xref(self, rolename: str, domain: str, target: str,
               innernode: Type[TextlikeNode] = addnodes.literal_emphasis,
               contnode: Node = None, env: BuildEnvironment = None,
               inliner: Inliner = None, location: Node = None) -> Node:
     # note: for backwards compatibility env is last, but not optional
     assert env is not None
     assert (inliner is None) == (location is None), (inliner, location)
     if not rolename:
         return contnode or innernode(target, target)
     # The domain is passed from DocFieldTransformer. So it surely exists.
     # So we don't need to take care the env.get_domain() raises an exception.
     role = env.get_domain(domain).role(rolename)
     if role is None or inliner is None:
         if role is None and inliner is not None:
             msg = __("Problem in %s domain: field is supposed "
                      "to use role '%s', but that role is not in the domain.")
             logger.warning(__(msg), domain, rolename, location=location)
         refnode = addnodes.pending_xref('', refdomain=domain, refexplicit=False,
                                         reftype=rolename, reftarget=target)
         refnode += contnode or innernode(target, target)
         env.get_domain(domain).process_field_xref(refnode)
         return refnode
     lineno = logging.get_source_line(location)[1]
     ns, messages = role(rolename, target, target, lineno, inliner, {}, [])
     return nodes.inline(target, '', *ns)
Beispiel #2
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 def make_xref(self,
               rolename: str,
               domain: str,
               target: str,
               innernode: Type[TextlikeNode] = addnodes.literal_emphasis,
               contnode: Node = None,
               env: BuildEnvironment = None) -> Node:
     if not rolename:
         return contnode or innernode(target, target)
     refnode = addnodes.pending_xref('',
                                     refdomain=domain,
                                     refexplicit=False,
                                     reftype=rolename,
                                     reftarget=target)
     refnode += contnode or innernode(target, target)
     if env:
         env.get_domain(domain).process_field_xref(refnode)
     return refnode
Beispiel #3
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def install_jsmath(app: Sphinx, env: BuildEnvironment) -> None:
    if app.builder.format != 'html' or app.builder.math_renderer_name != 'jsmath':  # type: ignore  # NOQA
        return
    if not app.config.jsmath_path:  # type: ignore
        raise ExtensionError('jsmath_path config value must be set for the '
                             'jsmath extension to work')

    builder = cast(StandaloneHTMLBuilder, app.builder)
    domain = cast(MathDomain, env.get_domain('math'))
    if domain.has_equations():
        # Enable jsmath only if equations exists
        builder.add_js_file(app.config.jsmath_path)  # type: ignore
Beispiel #4
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    def result_nodes(
            self, document: nodes.document, env: BuildEnvironment,
            node: nodes.Element, is_ref: bool
    ) -> Tuple[List[nodes.Node], List[nodes.system_message]]:
        """
        When a ``cite`` role is encountered, we replace it with a
        ``docutils.nodes.pending`` node that uses a ``CitationTransform`` for
        generating the proper citation reference representation during the
        resolve_xref phase.
        """
        domain = cast(CitationDomain, env.get_domain('cite'))

        # Get the config at this point in the document
        config = {}
        for opt in ['style', 'brackets', 'separator', 'sort', 'sort_compress']:
            config[opt] = env.temp_data.get(
                "cite_%s" % opt,
                env.domaindata['cite']['conf'].get(opt, DEFAULT_CONF[opt]))

        if self.name == "cite:text":
            # A ``text`` citation is unique because it doesn't reference a
            # cite-key
            keys = []
            pre, post = self.text, ''
        else:
            keys, pre, post = parse_keys(self.text)
            for key in keys:
                if domain.citations.get(key) is None:
                    logger.warning("cite-key `%s` not found in bibtex file" %
                                   key,
                                   location=(env.docname, self.lineno))
                    continue
                env.domaindata['cite']['keys'][key] = None
                env.domaindata['cite']['keys'] = sort_references(
                    env.domaindata['cite']['keys'], domain.citations)

        data = {
            'keys': keys,
            'pre': pre,
            'post': post,
            'typ': self.name,
            'global_keys': env.domaindata['cite']['keys'],
            'config': config
        }

        node += nodes.pending(CitationTransform, data)
        return [node], []
Beispiel #5
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def install_mathjax(app: Sphinx, env: BuildEnvironment) -> None:
    if app.builder.format != 'html' or app.builder.math_renderer_name != 'mathjax':  # type: ignore  # NOQA
        return
    if not app.config.mathjax_path:
        raise ExtensionError('mathjax_path config value must be set for the '
                             'mathjax extension to work')

    builder = cast(StandaloneHTMLBuilder, app.builder)
    domain = cast(MathDomain, env.get_domain('math'))
    if domain.has_equations():
        # Enable mathjax only if equations exists
        options = {'async': 'async'}
        if app.config.mathjax_options:
            options.update(app.config.mathjax_options)
        builder.add_js_file(app.config.mathjax_path, **options)

        if app.config.mathjax_config:
            body = "MathJax.Hub.Config(%s)" % json.dumps(app.config.mathjax_config)
            builder.add_js_file(None, type="text/x-mathjax-config", body=body)
Beispiel #6
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def _resolve_reference(env: BuildEnvironment, inv_name: Optional[str], inventory: Inventory,
                       honor_disabled_refs: bool,
                       node: pending_xref, contnode: TextElement) -> Optional[Element]:
    # disabling should only be done if no inventory is given
    honor_disabled_refs = honor_disabled_refs and inv_name is None

    if honor_disabled_refs and '*' in env.config.intersphinx_disabled_reftypes:
        return None

    typ = node['reftype']
    if typ == 'any':
        for domain_name, domain in env.domains.items():
            if honor_disabled_refs \
                    and (domain_name + ":*") in env.config.intersphinx_disabled_reftypes:
                continue
            objtypes = list(domain.object_types)
            res = _resolve_reference_in_domain(env, inv_name, inventory,
                                               honor_disabled_refs,
                                               domain, objtypes,
                                               node, contnode)
            if res is not None:
                return res
        return None
    else:
        domain_name = node.get('refdomain')
        if not domain_name:
            # only objects in domains are in the inventory
            return None
        if honor_disabled_refs \
                and (domain_name + ":*") in env.config.intersphinx_disabled_reftypes:
            return None
        domain = env.get_domain(domain_name)
        objtypes = domain.objtypes_for_role(typ)
        if not objtypes:
            return None
        return _resolve_reference_in_domain(env, inv_name, inventory,
                                            honor_disabled_refs,
                                            domain, objtypes,
                                            node, contnode)
Beispiel #7
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    def result_nodes(
            self, document: nodes.document, env: BuildEnvironment,
            node: nodes.Element, is_ref: bool
    ) -> Tuple[List[nodes.Node], List[nodes.system_message]]:
        if not is_ref:
            return [node], []

        make_index = _index_objects.get(ThriftObjectKind(node['reftype']),
                                        None)
        if make_index is not None:
            target_id = 'index-{}-{}'.format(
                env.new_serialno('index-{}'.format(node['reftarget'])),
                node['reftarget'])
            target = nodes.target('', '', ids=[target_id])
            document.note_explicit_target(target)

            index = addnodes.index()
            index['entries'] = [
                make_index(cast(ThriftDomain, env.get_domain('thrift')),
                           node['reftarget'], target_id)
            ]
            return [target, index, node], []
        return [node], []
Beispiel #8
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def missing_reference(app: Sphinx, env: BuildEnvironment, node: Element,
                      contnode: TextElement) -> nodes.reference:
    """Attempt to resolve a missing reference via intersphinx references."""
    target = node['reftarget']
    inventories = InventoryAdapter(env)
    objtypes = None  # type: List[str]
    if node['reftype'] == 'any':
        # we search anything!
        objtypes = [
            '%s:%s' % (domain.name, objtype)
            for domain in env.domains.values()
            for objtype in domain.object_types
        ]
        domain = None
    else:
        domain = node.get('refdomain')
        if not domain:
            # only objects in domains are in the inventory
            return None
        objtypes = env.get_domain(domain).objtypes_for_role(node['reftype'])
        if not objtypes:
            return None
        objtypes = ['%s:%s' % (domain, objtype) for objtype in objtypes]
    if 'std:cmdoption' in objtypes:
        # until Sphinx-1.6, cmdoptions are stored as std:option
        objtypes.append('std:option')
    if 'py:attribute' in objtypes:
        # Since Sphinx-2.1, properties are stored as py:method
        objtypes.append('py:method')
    to_try = [(inventories.main_inventory, target)]
    if domain:
        full_qualified_name = env.get_domain(domain).get_full_qualified_name(
            node)
        if full_qualified_name:
            to_try.append((inventories.main_inventory, full_qualified_name))
    in_set = None
    if ':' in target:
        # first part may be the foreign doc set name
        setname, newtarget = target.split(':', 1)
        if setname in inventories.named_inventory:
            in_set = setname
            to_try.append((inventories.named_inventory[setname], newtarget))
            if domain:
                node['reftarget'] = newtarget
                full_qualified_name = env.get_domain(
                    domain).get_full_qualified_name(node)
                if full_qualified_name:
                    to_try.append((inventories.named_inventory[setname],
                                   full_qualified_name))
    for inventory, target in to_try:
        for objtype in objtypes:
            if objtype not in inventory or target not in inventory[objtype]:
                continue
            proj, version, uri, dispname = inventory[objtype][target]
            if '://' not in uri and node.get('refdoc'):
                # get correct path in case of subdirectories
                uri = path.join(relative_path(node['refdoc'], '.'), uri)
            if version:
                reftitle = _('(in %s v%s)') % (proj, version)
            else:
                reftitle = _('(in %s)') % (proj, )
            newnode = nodes.reference('',
                                      '',
                                      internal=False,
                                      refuri=uri,
                                      reftitle=reftitle)
            if node.get('refexplicit'):
                # use whatever title was given
                newnode.append(contnode)
            elif dispname == '-' or \
                    (domain == 'std' and node['reftype'] == 'keyword'):
                # use whatever title was given, but strip prefix
                title = contnode.astext()
                if in_set and title.startswith(in_set + ':'):
                    newnode.append(
                        contnode.__class__(title[len(in_set) + 1:],
                                           title[len(in_set) + 1:]))
                else:
                    newnode.append(contnode)
            else:
                # else use the given display name (used for :ref:)
                newnode.append(contnode.__class__(dispname, dispname))
            return newnode
    # at least get rid of the ':' in the target if no explicit title given
    if in_set is not None and not node.get('refexplicit', True):
        if len(contnode) and isinstance(contnode[0], nodes.Text):
            contnode[0] = nodes.Text(newtarget, contnode[0].rawsource)

    return None
Beispiel #9
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class Sphinx(object):

    def __init__(self, srcdir, confdir, outdir, doctreedir, buildername,
                 confoverrides=None, status=sys.stdout, warning=sys.stderr,
                 freshenv=False, warningiserror=False, tags=None, verbosity=0,
                 parallel=0):
        # type: (unicode, unicode, unicode, unicode, unicode, Dict, IO, IO, bool, bool, List[unicode], int, int) -> None  # NOQA
        self.verbosity = verbosity
        self.extensions = {}                    # type: Dict[unicode, Extension]
        self._setting_up_extension = ['?']      # type: List[unicode]
        self.builder = None                     # type: Builder
        self.env = None                         # type: BuildEnvironment
        self.registry = SphinxComponentRegistry()
        self.enumerable_nodes = {}              # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA
        self.post_transforms = []               # type: List[Transform]
        self.html_themes = {}                   # type: Dict[unicode, unicode]

        self.srcdir = srcdir
        self.confdir = confdir
        self.outdir = outdir
        self.doctreedir = doctreedir

        self.parallel = parallel

        if status is None:
            self._status = cStringIO()      # type: IO
            self.quiet = True
        else:
            self._status = status
            self.quiet = False

        if warning is None:
            self._warning = cStringIO()     # type: IO
        else:
            self._warning = warning
        self._warncount = 0
        self.warningiserror = warningiserror
        logging.setup(self, self._status, self._warning)

        self.events = EventManager()

        # keep last few messages for traceback
        # This will be filled by sphinx.util.logging.LastMessagesWriter
        self.messagelog = deque(maxlen=10)  # type: deque

        # say hello to the world
        logger.info(bold('Running Sphinx v%s' % sphinx.__display_version__))

        # status code for command-line application
        self.statuscode = 0

        if not path.isdir(outdir):
            logger.info('making output directory...')
            os.makedirs(outdir)

        # read config
        self.tags = Tags(tags)
        self.config = Config(confdir, CONFIG_FILENAME,
                             confoverrides or {}, self.tags)
        self.config.check_unicode()
        # defer checking types until i18n has been initialized

        # initialize some limited config variables before initialize i18n and loading
        # extensions
        self.config.pre_init_values()

        # set up translation infrastructure
        self._init_i18n()

        # check the Sphinx version if requested
        if self.config.needs_sphinx and self.config.needs_sphinx > sphinx.__display_version__:
            raise VersionRequirementError(
                _('This project needs at least Sphinx v%s and therefore cannot '
                  'be built with this version.') % self.config.needs_sphinx)

        # set confdir to srcdir if -C given (!= no confdir); a few pieces
        # of code expect a confdir to be set
        if self.confdir is None:
            self.confdir = self.srcdir

        # load all built-in extension modules
        for extension in builtin_extensions:
            self.setup_extension(extension)

        # load all user-given extension modules
        for extension in self.config.extensions:
            self.setup_extension(extension)

        # preload builder module (before init config values)
        self.preload_builder(buildername)

        # the config file itself can be an extension
        if self.config.setup:
            self._setting_up_extension = ['conf.py']
            # py31 doesn't have 'callable' function for below check
            if hasattr(self.config.setup, '__call__'):
                self.config.setup(self)
            else:
                raise ConfigError(
                    _("'setup' as currently defined in conf.py isn't a Python callable. "
                      "Please modify its definition to make it a callable function. This is "
                      "needed for conf.py to behave as a Sphinx extension.")
                )

        # now that we know all config values, collect them from conf.py
        self.config.init_values()

        # check extension versions if requested
        verify_required_extensions(self, self.config.needs_extensions)

        # check primary_domain if requested
        primary_domain = self.config.primary_domain
        if primary_domain and not self.registry.has_domain(primary_domain):
            logger.warning(_('primary_domain %r not found, ignored.'), primary_domain)

        # create the builder
        self.builder = self.create_builder(buildername)
        # check all configuration values for permissible types
        self.config.check_types()
        # set up source_parsers
        self._init_source_parsers()
        # set up the build environment
        self._init_env(freshenv)
        # set up the builder
        self._init_builder()
        # set up the enumerable nodes
        self._init_enumerable_nodes()

    def _init_i18n(self):
        # type: () -> None
        """Load translated strings from the configured localedirs if enabled in
        the configuration.
        """
        if self.config.language is not None:
            logger.info(bold('loading translations [%s]... ' % self.config.language),
                        nonl=True)
            user_locale_dirs = [
                path.join(self.srcdir, x) for x in self.config.locale_dirs]
            # compile mo files if sphinx.po file in user locale directories are updated
            for catinfo in find_catalog_source_files(
                    user_locale_dirs, self.config.language, domains=['sphinx'],
                    charset=self.config.source_encoding):
                catinfo.write_mo(self.config.language)
            locale_dirs = [None, path.join(package_dir, 'locale')] + user_locale_dirs
        else:
            locale_dirs = []
        self.translator, has_translation = locale.init(locale_dirs, self.config.language)
        if self.config.language is not None:
            if has_translation or self.config.language == 'en':
                # "en" never needs to be translated
                logger.info(_('done'))
            else:
                logger.info('not available for built-in messages')

    def _init_source_parsers(self):
        # type: () -> None
        for suffix, parser in iteritems(self.config.source_parsers):
            self.add_source_parser(suffix, parser)
        for suffix, parser in iteritems(self.registry.get_source_parsers()):
            if suffix not in self.config.source_suffix:
                self.config.source_suffix.append(suffix)

    def _init_env(self, freshenv):
        # type: (bool) -> None
        if freshenv:
            self.env = BuildEnvironment(self)
            self.env.find_files(self.config, self.builder)
            for domain in self.registry.create_domains(self.env):
                self.env.domains[domain.name] = domain
        else:
            try:
                logger.info(bold(_('loading pickled environment... ')), nonl=True)
                filename = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
                self.env = BuildEnvironment.frompickle(filename, self)
                self.env.domains = {}
                for domain in self.registry.create_domains(self.env):
                    # this can raise if the data version doesn't fit
                    self.env.domains[domain.name] = domain
                logger.info(_('done'))
            except Exception as err:
                if isinstance(err, IOError) and err.errno == ENOENT:
                    logger.info(_('not yet created'))
                else:
                    logger.info(_('failed: %s'), err)
                self._init_env(freshenv=True)

    def preload_builder(self, name):
        # type: (unicode) -> None
        self.registry.preload_builder(self, name)

    def create_builder(self, name):
        # type: (unicode) -> Builder
        if name is None:
            logger.info(_('No builder selected, using default: html'))
            name = 'html'

        return self.registry.create_builder(self, name)

    def _init_builder(self):
        # type: () -> None
        self.builder.set_environment(self.env)
        self.builder.init()
        self.emit('builder-inited')

    def _init_enumerable_nodes(self):
        # type: () -> None
        for node, settings in iteritems(self.enumerable_nodes):
            self.env.get_domain('std').enumerable_nodes[node] = settings  # type: ignore

    # ---- main "build" method -------------------------------------------------

    def build(self, force_all=False, filenames=None):
        # type: (bool, List[unicode]) -> None
        try:
            if force_all:
                self.builder.compile_all_catalogs()
                self.builder.build_all()
            elif filenames:
                self.builder.compile_specific_catalogs(filenames)
                self.builder.build_specific(filenames)
            else:
                self.builder.compile_update_catalogs()
                self.builder.build_update()

            status = (self.statuscode == 0 and
                      _('succeeded') or _('finished with problems'))
            if self._warncount:
                logger.info(bold(_('build %s, %s warning%s.') %
                                 (status, self._warncount,
                                  self._warncount != 1 and 's' or '')))
            else:
                logger.info(bold(_('build %s.') % status))
        except Exception as err:
            # delete the saved env to force a fresh build next time
            envfile = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
            if path.isfile(envfile):
                os.unlink(envfile)
            self.emit('build-finished', err)
            raise
        else:
            self.emit('build-finished', None)
        self.builder.cleanup()

    # ---- logging handling ----------------------------------------------------
    def warn(self, message, location=None, type=None, subtype=None):
        # type: (unicode, unicode, unicode, unicode) -> None
        """Emit a warning.

        If *location* is given, it should either be a tuple of (docname, lineno)
        or a string describing the location of the warning as well as possible.

        *type* and *subtype* are used to suppress warnings with :confval:`suppress_warnings`.
        """
        warnings.warn('app.warning() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.warning(message, type=type, subtype=subtype, location=location)

    def info(self, message='', nonl=False):
        # type: (unicode, bool) -> None
        """Emit an informational message.

        If *nonl* is true, don't emit a newline at the end (which implies that
        more info output will follow soon.)
        """
        warnings.warn('app.info() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.info(message, nonl=nonl)

    def verbose(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a verbose informational message."""
        warnings.warn('app.verbose() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.verbose(message, *args, **kwargs)

    def debug(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a debug-level informational message."""
        warnings.warn('app.debug() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    def debug2(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a lowlevel debug-level informational message."""
        warnings.warn('app.debug2() is now deprecated. Use debug() instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    # ---- general extensibility interface -------------------------------------

    def setup_extension(self, extname):
        # type: (unicode) -> None
        """Import and setup a Sphinx extension module. No-op if called twice."""
        logger.debug('[app] setting up extension: %r', extname)
        self.registry.load_extension(self, extname)

    def require_sphinx(self, version):
        # type: (unicode) -> None
        # check the Sphinx version if requested
        if version > sphinx.__display_version__[:3]:
            raise VersionRequirementError(version)

    def import_object(self, objname, source=None):
        # type: (str, unicode) -> Any
        """Import an object from a 'module.name' string."""
        return import_object(objname, source=None)

    # event interface
    def connect(self, event, callback):
        # type: (unicode, Callable) -> int
        listener_id = self.events.connect(event, callback)
        logger.debug('[app] connecting event %r: %r [id=%s]', event, callback, listener_id)
        return listener_id

    def disconnect(self, listener_id):
        # type: (int) -> None
        logger.debug('[app] disconnecting event: [id=%s]', listener_id)
        self.events.disconnect(listener_id)

    def emit(self, event, *args):
        # type: (unicode, Any) -> List
        try:
            logger.debug('[app] emitting event: %r%s', event, repr(args)[:100])
        except Exception:
            # not every object likes to be repr()'d (think
            # random stuff coming via autodoc)
            pass
        return self.events.emit(event, self, *args)

    def emit_firstresult(self, event, *args):
        # type: (unicode, Any) -> Any
        return self.events.emit_firstresult(event, self, *args)

    # registering addon parts

    def add_builder(self, builder):
        # type: (Type[Builder]) -> None
        logger.debug('[app] adding builder: %r', builder)
        self.registry.add_builder(builder)

    def add_config_value(self, name, default, rebuild, types=()):
        # type: (unicode, Any, Union[bool, unicode], Any) -> None
        logger.debug('[app] adding config value: %r',
                     (name, default, rebuild) + ((types,) if types else ()))  # type: ignore
        if name in self.config:
            raise ExtensionError(_('Config value %r already present') % name)
        if rebuild in (False, True):
            rebuild = rebuild and 'env' or ''
        self.config.add(name, default, rebuild, types)

    def add_event(self, name):
        # type: (unicode) -> None
        logger.debug('[app] adding event: %r', name)
        self.events.add(name)

    def set_translator(self, name, translator_class):
        # type: (unicode, Type[nodes.NodeVisitor]) -> None
        logger.info(bold(_('Change of translator for the %s builder.') % name))
        self.registry.add_translator(name, translator_class)

    def add_node(self, node, **kwds):
        # type: (nodes.Node, Any) -> None
        logger.debug('[app] adding node: %r', (node, kwds))
        if not kwds.pop('override', False) and \
           hasattr(nodes.GenericNodeVisitor, 'visit_' + node.__name__):
            logger.warning(_('while setting up extension %s: node class %r is '
                             'already registered, its visitors will be overridden'),
                           self._setting_up_extension, node.__name__,
                           type='app', subtype='add_node')
        nodes._add_node_class_names([node.__name__])
        for key, val in iteritems(kwds):
            try:
                visit, depart = val
            except ValueError:
                raise ExtensionError(_('Value for key %r must be a '
                                       '(visit, depart) function tuple') % key)
            translator = self.registry.translators.get(key)
            translators = []
            if translator is not None:
                translators.append(translator)
            elif key == 'html':
                from sphinx.writers.html import HTMLTranslator
                translators.append(HTMLTranslator)
                if is_html5_writer_available():
                    from sphinx.writers.html5 import HTML5Translator
                    translators.append(HTML5Translator)
            elif key == 'latex':
                from sphinx.writers.latex import LaTeXTranslator
                translators.append(LaTeXTranslator)
            elif key == 'text':
                from sphinx.writers.text import TextTranslator
                translators.append(TextTranslator)
            elif key == 'man':
                from sphinx.writers.manpage import ManualPageTranslator
                translators.append(ManualPageTranslator)
            elif key == 'texinfo':
                from sphinx.writers.texinfo import TexinfoTranslator
                translators.append(TexinfoTranslator)

            for translator in translators:
                setattr(translator, 'visit_' + node.__name__, visit)
                if depart:
                    setattr(translator, 'depart_' + node.__name__, depart)

    def add_enumerable_node(self, node, figtype, title_getter=None, **kwds):
        # type: (nodes.Node, unicode, Callable, Any) -> None
        self.enumerable_nodes[node] = (figtype, title_getter)
        self.add_node(node, **kwds)

    def add_directive(self, name, obj, content=None, arguments=None, **options):
        # type: (unicode, Any, bool, Tuple[int, int, bool], Any) -> None
        logger.debug('[app] adding directive: %r',
                     (name, obj, content, arguments, options))
        if name in directives._directives:
            logger.warning(_('while setting up extension %s: directive %r is '
                             'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_directive')
        directive = directive_helper(obj, content, arguments, **options)
        directives.register_directive(name, directive)

    def add_role(self, name, role):
        # type: (unicode, Any) -> None
        logger.debug('[app] adding role: %r', (name, role))
        if name in roles._roles:
            logger.warning(_('while setting up extension %s: role %r is '
                             'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_role')
        roles.register_local_role(name, role)

    def add_generic_role(self, name, nodeclass):
        # type: (unicode, Any) -> None
        # don't use roles.register_generic_role because it uses
        # register_canonical_role
        logger.debug('[app] adding generic role: %r', (name, nodeclass))
        if name in roles._roles:
            logger.warning(_('while setting up extension %s: role %r is '
                             'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_generic_role')
        role = roles.GenericRole(name, nodeclass)
        roles.register_local_role(name, role)

    def add_domain(self, domain):
        # type: (Type[Domain]) -> None
        logger.debug('[app] adding domain: %r', domain)
        self.registry.add_domain(domain)

    def override_domain(self, domain):
        # type: (Type[Domain]) -> None
        logger.debug('[app] overriding domain: %r', domain)
        self.registry.override_domain(domain)

    def add_directive_to_domain(self, domain, name, obj,
                                has_content=None, argument_spec=None, **option_spec):
        # type: (unicode, unicode, Any, bool, Any, Any) -> None
        logger.debug('[app] adding directive to domain: %r',
                     (domain, name, obj, has_content, argument_spec, option_spec))
        self.registry.add_directive_to_domain(domain, name, obj,
                                              has_content, argument_spec, **option_spec)

    def add_role_to_domain(self, domain, name, role):
        # type: (unicode, unicode, Any) -> None
        logger.debug('[app] adding role to domain: %r', (domain, name, role))
        self.registry.add_role_to_domain(domain, name, role)

    def add_index_to_domain(self, domain, index):
        # type: (unicode, Type[Index]) -> None
        logger.debug('[app] adding index to domain: %r', (domain, index))
        self.registry.add_index_to_domain(domain, index)

    def add_object_type(self, directivename, rolename, indextemplate='',
                        parse_node=None, ref_nodeclass=None, objname='',
                        doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        logger.debug('[app] adding object type: %r',
                     (directivename, rolename, indextemplate, parse_node,
                      ref_nodeclass, objname, doc_field_types))
        self.registry.add_object_type(directivename, rolename, indextemplate, parse_node,
                                      ref_nodeclass, objname, doc_field_types)

    def add_description_unit(self, directivename, rolename, indextemplate='',
                             parse_node=None, ref_nodeclass=None, objname='',
                             doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        warnings.warn('app.add_description_unit() is now deprecated. '
                      'Use app.add_object_type() instead.',
                      RemovedInSphinx20Warning)
        self.add_object_type(directivename, rolename, indextemplate, parse_node,
                             ref_nodeclass, objname, doc_field_types)

    def add_crossref_type(self, directivename, rolename, indextemplate='',
                          ref_nodeclass=None, objname=''):
        # type: (unicode, unicode, unicode, nodes.Node, unicode) -> None
        logger.debug('[app] adding crossref type: %r',
                     (directivename, rolename, indextemplate, ref_nodeclass,
                      objname))
        self.registry.add_crossref_type(directivename, rolename,
                                        indextemplate, ref_nodeclass, objname)

    def add_transform(self, transform):
        # type: (Type[Transform]) -> None
        logger.debug('[app] adding transform: %r', transform)
        SphinxStandaloneReader.transforms.append(transform)

    def add_post_transform(self, transform):
        # type: (Type[Transform]) -> None
        logger.debug('[app] adding post transform: %r', transform)
        self.post_transforms.append(transform)

    def add_javascript(self, filename):
        # type: (unicode) -> None
        logger.debug('[app] adding javascript: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.script_files.append(filename)
        else:
            StandaloneHTMLBuilder.script_files.append(
                posixpath.join('_static', filename))

    def add_stylesheet(self, filename, alternate=False, title=None):
        # type: (unicode, bool, unicode) -> None
        logger.debug('[app] adding stylesheet: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder, Stylesheet
        if '://' not in filename:
            filename = posixpath.join('_static', filename)
        if alternate:
            rel = u'alternate stylesheet'
        else:
            rel = u'stylesheet'
        css = Stylesheet(filename, title, rel)  # type: ignore
        StandaloneHTMLBuilder.css_files.append(css)

    def add_latex_package(self, packagename, options=None):
        # type: (unicode, unicode) -> None
        logger.debug('[app] adding latex package: %r', packagename)
        if hasattr(self.builder, 'usepackages'):  # only for LaTeX builder
            self.builder.usepackages.append((packagename, options))  # type: ignore

    def add_lexer(self, alias, lexer):
        # type: (unicode, Any) -> None
        logger.debug('[app] adding lexer: %r', (alias, lexer))
        from sphinx.highlighting import lexers
        if lexers is None:
            return
        lexers[alias] = lexer

    def add_autodocumenter(self, cls):
        # type: (Any) -> None
        logger.debug('[app] adding autodocumenter: %r', cls)
        from sphinx.ext import autodoc
        autodoc.add_documenter(cls)
        self.add_directive('auto' + cls.objtype, autodoc.AutoDirective)

    def add_autodoc_attrgetter(self, type, getter):
        # type: (Any, Callable) -> None
        logger.debug('[app] adding autodoc attrgetter: %r', (type, getter))
        from sphinx.ext import autodoc
        autodoc.AutoDirective._special_attrgetters[type] = getter

    def add_search_language(self, cls):
        # type: (Any) -> None
        logger.debug('[app] adding search language: %r', cls)
        from sphinx.search import languages, SearchLanguage
        assert issubclass(cls, SearchLanguage)
        languages[cls.lang] = cls

    def add_source_parser(self, suffix, parser):
        # type: (unicode, Parser) -> None
        logger.debug('[app] adding search source_parser: %r, %r', suffix, parser)
        self.registry.add_source_parser(suffix, parser)

    def add_env_collector(self, collector):
        # type: (Type[EnvironmentCollector]) -> None
        logger.debug('[app] adding environment collector: %r', collector)
        collector().enable(self)

    def add_html_theme(self, name, theme_path):
        # type: (unicode, unicode) -> None
        logger.debug('[app] adding HTML theme: %r, %r', name, theme_path)
        self.html_themes[name] = theme_path
Beispiel #10
0
class Sphinx(object):
    """The main application class and extensibility interface.

    :ivar srcdir: Directory containing source.
    :ivar confdir: Directory containing ``conf.py``.
    :ivar doctreedir: Directory for storing pickled doctrees.
    :ivar outdir: Directory for storing build documents.
    """

    def __init__(self, srcdir, confdir, outdir, doctreedir, buildername,
                 confoverrides=None, status=sys.stdout, warning=sys.stderr,
                 freshenv=False, warningiserror=False, tags=None, verbosity=0,
                 parallel=0):
        # type: (unicode, unicode, unicode, unicode, unicode, Dict, IO, IO, bool, bool, List[unicode], int, int) -> None  # NOQA
        self.verbosity = verbosity
        self.extensions = {}                    # type: Dict[unicode, Extension]
        self._setting_up_extension = ['?']      # type: List[unicode]
        self.builder = None                     # type: Builder
        self.env = None                         # type: BuildEnvironment
        self.registry = SphinxComponentRegistry()
        self.enumerable_nodes = {}              # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA
        self.html_themes = {}                   # type: Dict[unicode, unicode]

        # validate provided directories
        self.srcdir = abspath(srcdir)
        self.outdir = abspath(outdir)
        self.doctreedir = abspath(doctreedir)
        self.confdir = confdir
        if self.confdir:  # confdir is optional
            self.confdir = abspath(self.confdir)
            if not path.isfile(path.join(self.confdir, 'conf.py')):
                raise ApplicationError("config directory doesn't contain a "
                                       "conf.py file (%s)" % confdir)

        if not path.isdir(self.srcdir):
            raise ApplicationError('Cannot find source directory (%s)' %
                                   self.srcdir)

        if self.srcdir == self.outdir:
            raise ApplicationError('Source directory and destination '
                                   'directory cannot be identical')

        self.parallel = parallel

        if status is None:
            self._status = cStringIO()      # type: IO
            self.quiet = True
        else:
            self._status = status
            self.quiet = False

        if warning is None:
            self._warning = cStringIO()     # type: IO
        else:
            self._warning = warning
        self._warncount = 0
        self.warningiserror = warningiserror
        logging.setup(self, self._status, self._warning)

        self.events = EventManager()

        # keep last few messages for traceback
        # This will be filled by sphinx.util.logging.LastMessagesWriter
        self.messagelog = deque(maxlen=10)  # type: deque

        # say hello to the world
        logger.info(bold('Running Sphinx v%s' % sphinx.__display_version__))

        # status code for command-line application
        self.statuscode = 0

        # read config
        self.tags = Tags(tags)
        self.config = Config(confdir, CONFIG_FILENAME,
                             confoverrides or {}, self.tags)
        self.config.check_unicode()
        # defer checking types until i18n has been initialized

        # initialize some limited config variables before initialize i18n and loading
        # extensions
        self.config.pre_init_values()

        # set up translation infrastructure
        self._init_i18n()

        # check the Sphinx version if requested
        if self.config.needs_sphinx and self.config.needs_sphinx > sphinx.__display_version__:
            raise VersionRequirementError(
                __('This project needs at least Sphinx v%s and therefore cannot '
                   'be built with this version.') % self.config.needs_sphinx)

        # set confdir to srcdir if -C given (!= no confdir); a few pieces
        # of code expect a confdir to be set
        if self.confdir is None:
            self.confdir = self.srcdir

        # load all built-in extension modules
        for extension in builtin_extensions:
            self.setup_extension(extension)

        # load all user-given extension modules
        for extension in self.config.extensions:
            self.setup_extension(extension)

        # preload builder module (before init config values)
        self.preload_builder(buildername)

        if not path.isdir(outdir):
            logger.info('making output directory...')
            ensuredir(outdir)

        # the config file itself can be an extension
        if self.config.setup:
            self._setting_up_extension = ['conf.py']
            if callable(self.config.setup):
                self.config.setup(self)
            else:
                raise ConfigError(
                    __("'setup' as currently defined in conf.py isn't a Python callable. "
                       "Please modify its definition to make it a callable function. This is "
                       "needed for conf.py to behave as a Sphinx extension.")
                )

        # now that we know all config values, collect them from conf.py
        self.config.init_values()
        self.emit('config-inited', self.config)

        # check primary_domain if requested
        primary_domain = self.config.primary_domain
        if primary_domain and not self.registry.has_domain(primary_domain):
            logger.warning(__('primary_domain %r not found, ignored.'), primary_domain)

        # create the builder
        self.builder = self.create_builder(buildername)
        # check all configuration values for permissible types
        self.config.check_types()
        # set up the build environment
        self._init_env(freshenv)
        # set up the builder
        self._init_builder()
        # set up the enumerable nodes
        self._init_enumerable_nodes()

    def _init_i18n(self):
        # type: () -> None
        """Load translated strings from the configured localedirs if enabled in
        the configuration.
        """
        if self.config.language is not None:
            logger.info(bold('loading translations [%s]... ' % self.config.language),
                        nonl=True)
            user_locale_dirs = [
                path.join(self.srcdir, x) for x in self.config.locale_dirs]
            # compile mo files if sphinx.po file in user locale directories are updated
            for catinfo in find_catalog_source_files(
                    user_locale_dirs, self.config.language, domains=['sphinx'],
                    charset=self.config.source_encoding):
                catinfo.write_mo(self.config.language)
            locale_dirs = [None, path.join(package_dir, 'locale')] + user_locale_dirs  # type: ignore  # NOQA
        else:
            locale_dirs = []
        self.translator, has_translation = locale.init(locale_dirs, self.config.language)
        if self.config.language is not None:
            if has_translation or self.config.language == 'en':
                # "en" never needs to be translated
                logger.info(__('done'))
            else:
                logger.info('not available for built-in messages')

    def _init_env(self, freshenv):
        # type: (bool) -> None
        filename = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
        if freshenv or not os.path.exists(filename):
            self.env = BuildEnvironment(self)
            self.env.find_files(self.config, self.builder)
            for domain in self.registry.create_domains(self.env):
                self.env.domains[domain.name] = domain
        else:
            try:
                logger.info(bold(__('loading pickled environment... ')), nonl=True)
                self.env = BuildEnvironment.frompickle(filename, self)
                needed, reason = self.env.need_refresh(self)
                if needed:
                    raise IOError(reason)
                self.env.domains = {}
                for domain in self.registry.create_domains(self.env):
                    # this can raise if the data version doesn't fit
                    self.env.domains[domain.name] = domain
                logger.info(__('done'))
            except Exception as err:
                logger.info(__('failed: %s'), err)
                self._init_env(freshenv=True)

    def preload_builder(self, name):
        # type: (unicode) -> None
        self.registry.preload_builder(self, name)

    def create_builder(self, name):
        # type: (unicode) -> Builder
        if name is None:
            logger.info(__('No builder selected, using default: html'))
            name = 'html'

        return self.registry.create_builder(self, name)

    def _init_builder(self):
        # type: () -> None
        self.builder.set_environment(self.env)
        self.builder.init()
        self.emit('builder-inited')

    def _init_enumerable_nodes(self):
        # type: () -> None
        for node, settings in iteritems(self.enumerable_nodes):
            self.env.get_domain('std').enumerable_nodes[node] = settings  # type: ignore

    # ---- main "build" method -------------------------------------------------

    def build(self, force_all=False, filenames=None):
        # type: (bool, List[unicode]) -> None
        try:
            if force_all:
                self.builder.compile_all_catalogs()
                self.builder.build_all()
            elif filenames:
                self.builder.compile_specific_catalogs(filenames)
                self.builder.build_specific(filenames)
            else:
                self.builder.compile_update_catalogs()
                self.builder.build_update()

            status = (self.statuscode == 0 and
                      __('succeeded') or __('finished with problems'))
            if self._warncount:
                logger.info(bold(__('build %s, %s warning.',
                            'build %s, %s warnings.', self._warncount) %
                                 (status, self._warncount)))
            else:
                logger.info(bold(__('build %s.') % status))

            if self.statuscode == 0 and self.builder.epilog:
                logger.info('')
                logger.info(self.builder.epilog % {
                    'outdir': path.relpath(self.outdir),
                    'project': self.config.project
                })
        except Exception as err:
            # delete the saved env to force a fresh build next time
            envfile = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
            if path.isfile(envfile):
                os.unlink(envfile)
            self.emit('build-finished', err)
            raise
        else:
            self.emit('build-finished', None)
        self.builder.cleanup()

    # ---- logging handling ----------------------------------------------------
    def warn(self, message, location=None, type=None, subtype=None):
        # type: (unicode, unicode, unicode, unicode) -> None
        """Emit a warning.

        If *location* is given, it should either be a tuple of (*docname*,
        *lineno*) or a string describing the location of the warning as well as
        possible.

        *type* and *subtype* are used to suppress warnings with
        :confval:`suppress_warnings`.

        .. deprecated:: 1.6
           Use :mod:`sphinx.util.logging` instead.
        """
        warnings.warn('app.warning() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.warning(message, type=type, subtype=subtype, location=location)

    def info(self, message='', nonl=False):
        # type: (unicode, bool) -> None
        """Emit an informational message.

        If *nonl* is true, don't emit a newline at the end (which implies that
        more info output will follow soon.)

        .. deprecated:: 1.6
           Use :mod:`sphinx.util.logging` instead.
        """
        warnings.warn('app.info() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.info(message, nonl=nonl)

    def verbose(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a verbose informational message.

        .. deprecated:: 1.6
           Use :mod:`sphinx.util.logging` instead.
        """
        warnings.warn('app.verbose() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.verbose(message, *args, **kwargs)

    def debug(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a debug-level informational message.

        .. deprecated:: 1.6
           Use :mod:`sphinx.util.logging` instead.
        """
        warnings.warn('app.debug() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    def debug2(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a lowlevel debug-level informational message.

        .. deprecated:: 1.6
           Use :mod:`sphinx.util.logging` instead.
        """
        warnings.warn('app.debug2() is now deprecated. Use debug() instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    # ---- general extensibility interface -------------------------------------

    def setup_extension(self, extname):
        # type: (unicode) -> None
        """Import and setup a Sphinx extension module.

        Load the extension given by the module *name*.  Use this if your
        extension needs the features provided by another extension.  No-op if
        called twice.
        """
        logger.debug('[app] setting up extension: %r', extname)
        self.registry.load_extension(self, extname)

    def require_sphinx(self, version):
        # type: (unicode) -> None
        """Check the Sphinx version if requested.

        Compare *version* (which must be a ``major.minor`` version string, e.g.
        ``'1.1'``) with the version of the running Sphinx, and abort the build
        when it is too old.

        .. versionadded:: 1.0
        """
        if version > sphinx.__display_version__[:3]:
            raise VersionRequirementError(version)

    def import_object(self, objname, source=None):
        # type: (str, unicode) -> Any
        """Import an object from a ``module.name`` string.

        .. deprecated:: 1.8
           Use ``sphinx.util.import_object()`` instead.
        """
        warnings.warn('app.import_object() is deprecated. '
                      'Use sphinx.util.add_object_type() instead.',
                      RemovedInSphinx30Warning)
        return import_object(objname, source=None)

    # event interface
    def connect(self, event, callback):
        # type: (unicode, Callable) -> int
        """Register *callback* to be called when *event* is emitted.

        For details on available core events and the arguments of callback
        functions, please see :ref:`events`.

        The method returns a "listener ID" that can be used as an argument to
        :meth:`disconnect`.
        """
        listener_id = self.events.connect(event, callback)
        logger.debug('[app] connecting event %r: %r [id=%s]', event, callback, listener_id)
        return listener_id

    def disconnect(self, listener_id):
        # type: (int) -> None
        """Unregister callback by *listener_id*."""
        logger.debug('[app] disconnecting event: [id=%s]', listener_id)
        self.events.disconnect(listener_id)

    def emit(self, event, *args):
        # type: (unicode, Any) -> List
        """Emit *event* and pass *arguments* to the callback functions.

        Return the return values of all callbacks as a list.  Do not emit core
        Sphinx events in extensions!
        """
        try:
            logger.debug('[app] emitting event: %r%s', event, repr(args)[:100])
        except Exception:
            # not every object likes to be repr()'d (think
            # random stuff coming via autodoc)
            pass
        return self.events.emit(event, self, *args)

    def emit_firstresult(self, event, *args):
        # type: (unicode, Any) -> Any
        """Emit *event* and pass *arguments* to the callback functions.

        Return the result of the first callback that doesn't return ``None``.

        .. versionadded:: 0.5
        """
        return self.events.emit_firstresult(event, self, *args)

    # registering addon parts

    def add_builder(self, builder):
        # type: (Type[Builder]) -> None
        """Register a new builder.

        *builder* must be a class that inherits from
        :class:`~sphinx.builders.Builder`.
        """
        self.registry.add_builder(builder)

    # TODO(stephenfin): Describe 'types' parameter
    def add_config_value(self, name, default, rebuild, types=()):
        # type: (unicode, Any, Union[bool, unicode], Any) -> None
        """Register a configuration value.

        This is necessary for Sphinx to recognize new values and set default
        values accordingly.  The *name* should be prefixed with the extension
        name, to avoid clashes.  The *default* value can be any Python object.
        The string value *rebuild* must be one of those values:

        * ``'env'`` if a change in the setting only takes effect when a
          document is parsed -- this means that the whole environment must be
          rebuilt.
        * ``'html'`` if a change in the setting needs a full rebuild of HTML
          documents.
        * ``''`` if a change in the setting will not need any special rebuild.

        .. versionchanged:: 0.6
           Changed *rebuild* from a simple boolean (equivalent to ``''`` or
           ``'env'``) to a string.  However, booleans are still accepted and
           converted internally.

        .. versionchanged:: 0.4
           If the *default* value is a callable, it will be called with the
           config object as its argument in order to get the default value.
           This can be used to implement config values whose default depends on
           other values.
        """
        logger.debug('[app] adding config value: %r',
                     (name, default, rebuild) + ((types,) if types else ()))  # type: ignore
        if name in self.config:
            raise ExtensionError(__('Config value %r already present') % name)
        if rebuild in (False, True):
            rebuild = rebuild and 'env' or ''
        self.config.add(name, default, rebuild, types)

    def add_event(self, name):
        # type: (unicode) -> None
        """Register an event called *name*.

        This is needed to be able to emit it.
        """
        logger.debug('[app] adding event: %r', name)
        self.events.add(name)

    def set_translator(self, name, translator_class):
        # type: (unicode, Type[nodes.NodeVisitor]) -> None
        """Register or override a Docutils translator class.

        This is used to register a custom output translator or to replace a
        builtin translator.  This allows extensions to use custom translator
        and define custom nodes for the translator (see :meth:`add_node`).

        .. versionadded:: 1.3
        """
        self.registry.add_translator(name, translator_class)

    def add_node(self, node, **kwds):
        # type: (nodes.Node, Any) -> None
        """Register a Docutils node class.

        This is necessary for Docutils internals.  It may also be used in the
        future to validate nodes in the parsed documents.

        Node visitor functions for the Sphinx HTML, LaTeX, text and manpage
        writers can be given as keyword arguments: the keyword should be one or
        more of ``'html'``, ``'latex'``, ``'text'``, ``'man'``, ``'texinfo'``
        or any other supported translators, the value a 2-tuple of ``(visit,
        depart)`` methods.  ``depart`` can be ``None`` if the ``visit``
        function raises :exc:`docutils.nodes.SkipNode`.  Example:

        .. code-block:: python

           class math(docutils.nodes.Element): pass

           def visit_math_html(self, node):
               self.body.append(self.starttag(node, 'math'))
           def depart_math_html(self, node):
               self.body.append('</math>')

           app.add_node(math, html=(visit_math_html, depart_math_html))

        Obviously, translators for which you don't specify visitor methods will
        choke on the node when encountered in a document to translate.

        .. versionchanged:: 0.5
           Added the support for keyword arguments giving visit functions.
        """
        logger.debug('[app] adding node: %r', (node, kwds))
        if not kwds.pop('override', False) and \
           hasattr(nodes.GenericNodeVisitor, 'visit_' + node.__name__):
            logger.warning(__('while setting up extension %s: node class %r is '
                              'already registered, its visitors will be overridden'),
                           self._setting_up_extension, node.__name__,
                           type='app', subtype='add_node')
        nodes._add_node_class_names([node.__name__])
        for key, val in iteritems(kwds):
            try:
                visit, depart = val
            except ValueError:
                raise ExtensionError(__('Value for key %r must be a '
                                        '(visit, depart) function tuple') % key)
            translator = self.registry.translators.get(key)
            translators = []
            if translator is not None:
                translators.append(translator)
            elif key == 'html':
                from sphinx.writers.html import HTMLTranslator
                translators.append(HTMLTranslator)
                if is_html5_writer_available():
                    from sphinx.writers.html5 import HTML5Translator
                    translators.append(HTML5Translator)
            elif key == 'latex':
                from sphinx.writers.latex import LaTeXTranslator
                translators.append(LaTeXTranslator)
            elif key == 'text':
                from sphinx.writers.text import TextTranslator
                translators.append(TextTranslator)
            elif key == 'man':
                from sphinx.writers.manpage import ManualPageTranslator
                translators.append(ManualPageTranslator)
            elif key == 'texinfo':
                from sphinx.writers.texinfo import TexinfoTranslator
                translators.append(TexinfoTranslator)

            for translator in translators:
                setattr(translator, 'visit_' + node.__name__, visit)
                if depart:
                    setattr(translator, 'depart_' + node.__name__, depart)

    def add_enumerable_node(self, node, figtype, title_getter=None, **kwds):
        # type: (nodes.Node, unicode, Callable, Any) -> None
        """Register a Docutils node class as a numfig target.

        Sphinx numbers the node automatically. And then the users can refer it
        using :rst:role:`numref`.

        *figtype* is a type of enumerable nodes.  Each figtypes have individual
        numbering sequences.  As a system figtypes, ``figure``, ``table`` and
        ``code-block`` are defined.  It is able to add custom nodes to these
        default figtypes.  It is also able to define new custom figtype if new
        figtype is given.

        *title_getter* is a getter function to obtain the title of node.  It
        takes an instance of the enumerable node, and it must return its title
        as string.  The title is used to the default title of references for
        :rst:role:`ref`.  By default, Sphinx searches
        ``docutils.nodes.caption`` or ``docutils.nodes.title`` from the node as
        a title.

        Other keyword arguments are used for node visitor functions. See the
        :meth:`Sphinx.add_node` for details.

        .. versionadded:: 1.4
        """
        self.enumerable_nodes[node] = (figtype, title_getter)
        self.add_node(node, **kwds)

    def add_directive(self, name, obj, content=None, arguments=None, **options):
        # type: (unicode, Any, bool, Tuple[int, int, bool], Any) -> None
        """Register a Docutils directive.

        *name* must be the prospective directive name.  There are two possible
        ways to write a directive:

        - In the docutils 0.4 style, *obj* is the directive function.
          *content*, *arguments* and *options* are set as attributes on the
          function and determine whether the directive has content, arguments
          and options, respectively.  **This style is deprecated.**

        - In the docutils 0.5 style, *directiveclass* is the directive class.
          It must already have attributes named *has_content*,
          *required_arguments*, *optional_arguments*,
          *final_argument_whitespace* and *option_spec* that correspond to the
          options for the function way.  See `the Docutils docs
          <http://docutils.sourceforge.net/docs/howto/rst-directives.html>`_
          for details.

        The directive class must inherit from the class
        ``docutils.parsers.rst.Directive``.

        For example, the (already existing) :rst:dir:`literalinclude` directive
        would be added like this:

        .. code-block:: python

           from docutils.parsers.rst import directives
           add_directive('literalinclude', literalinclude_directive,
                         content = 0, arguments = (1, 0, 0),
                         linenos = directives.flag,
                         language = directives.unchanged,
                         encoding = directives.encoding)

        .. versionchanged:: 0.6
           Docutils 0.5-style directive classes are now supported.
        .. deprecated:: 1.8
           Docutils 0.4-style (function based) directives support is deprecated.
        """
        logger.debug('[app] adding directive: %r',
                     (name, obj, content, arguments, options))
        if name in directives._directives:
            logger.warning(__('while setting up extension %s: directive %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_directive')
        directive = directive_helper(obj, content, arguments, **options)
        directives.register_directive(name, directive)

        if not issubclass(obj, Directive):
            warnings.warn('function based directive support is now deprecated. '
                          'Use class based directive instead.',
                          RemovedInSphinx30Warning)

    def add_role(self, name, role):
        # type: (unicode, Any) -> None
        """Register a Docutils role.

        *name* must be the role name that occurs in the source, *role* the role
        function. Refer to the `Docutils documentation
        <http://docutils.sourceforge.net/docs/howto/rst-roles.html>`_ for
        more information.
        """
        logger.debug('[app] adding role: %r', (name, role))
        if name in roles._roles:
            logger.warning(__('while setting up extension %s: role %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_role')
        roles.register_local_role(name, role)

    def add_generic_role(self, name, nodeclass):
        # type: (unicode, Any) -> None
        """Register a generic Docutils role.

        Register a Docutils role that does nothing but wrap its contents in the
        node given by *nodeclass*.

        .. versionadded:: 0.6
        """
        # Don't use ``roles.register_generic_role`` because it uses
        # ``register_canonical_role``.
        logger.debug('[app] adding generic role: %r', (name, nodeclass))
        if name in roles._roles:
            logger.warning(__('while setting up extension %s: role %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_generic_role')
        role = roles.GenericRole(name, nodeclass)
        roles.register_local_role(name, role)

    def add_domain(self, domain):
        # type: (Type[Domain]) -> None
        """Register a domain.

        Make the given *domain* (which must be a class; more precisely, a
        subclass of :class:`~sphinx.domains.Domain`) known to Sphinx.

        .. versionadded:: 1.0
        """
        self.registry.add_domain(domain)

    def override_domain(self, domain):
        # type: (Type[Domain]) -> None
        """Override a registered domain.

        Make the given *domain* class known to Sphinx, assuming that there is
        already a domain with its ``.name``.  The new domain must be a subclass
        of the existing one.

        .. versionadded:: 1.0
        """
        self.registry.override_domain(domain)

    def add_directive_to_domain(self, domain, name, obj,
                                has_content=None, argument_spec=None, **option_spec):
        # type: (unicode, unicode, Any, bool, Any, Any) -> None
        """Register a Docutils directive in a domain.

        Like :meth:`add_directive`, but the directive is added to the domain
        named *domain*.

        .. versionadded:: 1.0
        """
        self.registry.add_directive_to_domain(domain, name, obj,
                                              has_content, argument_spec, **option_spec)

    def add_role_to_domain(self, domain, name, role):
        # type: (unicode, unicode, Union[RoleFunction, XRefRole]) -> None
        """Register a Docutils role in a domain.

        Like :meth:`add_role`, but the role is added to the domain named
        *domain*.

       .. versionadded:: 1.0
        """
        self.registry.add_role_to_domain(domain, name, role)

    def add_index_to_domain(self, domain, index):
        # type: (unicode, Type[Index]) -> None
        """Register a custom index for a domain.

        Add a custom *index* class to the domain named *domain*.  *index* must
        be a subclass of :class:`~sphinx.domains.Index`.

        .. versionadded:: 1.0
        """
        self.registry.add_index_to_domain(domain, index)

    def add_object_type(self, directivename, rolename, indextemplate='',
                        parse_node=None, ref_nodeclass=None, objname='',
                        doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        """Register a new object type.

        This method is a very convenient way to add a new :term:`object` type
        that can be cross-referenced.  It will do this:

        - Create a new directive (called *directivename*) for documenting an
          object.  It will automatically add index entries if *indextemplate*
          is nonempty; if given, it must contain exactly one instance of
          ``%s``.  See the example below for how the template will be
          interpreted.  * Create a new role (called *rolename*) to
          cross-reference to these object descriptions.
        - If you provide *parse_node*, it must be a function that takes a
          string and a docutils node, and it must populate the node with
          children parsed from the string.  It must then return the name of the
          item to be used in cross-referencing and index entries.  See the
          :file:`conf.py` file in the source for this documentation for an
          example.
        - The *objname* (if not given, will default to *directivename*) names
          the type of object.  It is used when listing objects, e.g. in search
          results.

        For example, if you have this call in a custom Sphinx extension::

           app.add_object_type('directive', 'dir', 'pair: %s; directive')

        you can use this markup in your documents::

           .. rst:directive:: function

              Document a function.

           <...>

           See also the :rst:dir:`function` directive.

        For the directive, an index entry will be generated as if you had prepended ::

           .. index:: pair: function; directive

        The reference node will be of class ``literal`` (so it will be rendered
        in a proportional font, as appropriate for code) unless you give the
        *ref_nodeclass* argument, which must be a docutils node class.  Most
        useful are ``docutils.nodes.emphasis`` or ``docutils.nodes.strong`` --
        you can also use ``docutils.nodes.generated`` if you want no further
        text decoration.  If the text should be treated as literal (e.g. no
        smart quote replacement), but not have typewriter styling, use
        ``sphinx.addnodes.literal_emphasis`` or
        ``sphinx.addnodes.literal_strong``.

        For the role content, you have the same syntactical possibilities as
        for standard Sphinx roles (see :ref:`xref-syntax`).

        This method is also available under the deprecated alias
        :meth:`add_description_unit`.
        """
        self.registry.add_object_type(directivename, rolename, indextemplate, parse_node,
                                      ref_nodeclass, objname, doc_field_types)

    def add_description_unit(self, directivename, rolename, indextemplate='',
                             parse_node=None, ref_nodeclass=None, objname='',
                             doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        """Deprecated alias for :meth:`add_object_type`.

        .. deprecated:: 1.6
           Use :meth:`add_object_type` instead.
        """
        warnings.warn('app.add_description_unit() is now deprecated. '
                      'Use app.add_object_type() instead.',
                      RemovedInSphinx20Warning)
        self.add_object_type(directivename, rolename, indextemplate, parse_node,
                             ref_nodeclass, objname, doc_field_types)

    def add_crossref_type(self, directivename, rolename, indextemplate='',
                          ref_nodeclass=None, objname=''):
        # type: (unicode, unicode, unicode, nodes.Node, unicode) -> None
        """Register a new crossref object type.

        This method is very similar to :meth:`add_object_type` except that the
        directive it generates must be empty, and will produce no output.

        That means that you can add semantic targets to your sources, and refer
        to them using custom roles instead of generic ones (like
        :rst:role:`ref`).  Example call::

           app.add_crossref_type('topic', 'topic', 'single: %s',
                                 docutils.nodes.emphasis)

        Example usage::

           .. topic:: application API

           The application API
           -------------------

           Some random text here.

           See also :topic:`this section <application API>`.

        (Of course, the element following the ``topic`` directive needn't be a
        section.)
        """
        self.registry.add_crossref_type(directivename, rolename,
                                        indextemplate, ref_nodeclass, objname)

    def add_transform(self, transform):
        # type: (Type[Transform]) -> None
        """Register a Docutils transform to be applied after parsing.

        Add the standard docutils :class:`Transform` subclass *transform* to
        the list of transforms that are applied after Sphinx parses a reST
        document.
        """
        self.registry.add_transform(transform)

    def add_post_transform(self, transform):
        # type: (Type[Transform]) -> None
        """Register a Docutils transform to be applied before writing.

        Add the standard docutils :class:`Transform` subclass *transform* to
        the list of transforms that are applied before Sphinx writes a
        document.
        """
        self.registry.add_post_transform(transform)

    def add_javascript(self, filename):
        # type: (unicode) -> None
        """Register a JavaScript file to include in the HTML output.

        Add *filename* to the list of JavaScript files that the default HTML
        template will include.  The filename must be relative to the HTML
        static path, see :confval:`the docs for the config value
        <html_static_path>`.  A full URI with scheme, like
        ``http://example.org/foo.js``, is also supported.

        .. versionadded:: 0.5
        """
        logger.debug('[app] adding javascript: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.script_files.append(filename)
        else:
            StandaloneHTMLBuilder.script_files.append(
                posixpath.join('_static', filename))

    def add_stylesheet(self, filename, alternate=False, title=None):
        # type: (unicode, bool, unicode) -> None
        """Register a stylesheet to include in the HTML output.

        Add *filename* to the list of CSS files that the default HTML template
        will include.  Like for :meth:`add_javascript`, the filename must be
        relative to the HTML static path, or a full URI with scheme.

        .. versionadded:: 1.0

        .. versionchanged:: 1.6
           Optional ``alternate`` and/or ``title`` attributes can be supplied
           with the *alternate* (of boolean type) and *title* (a string)
           arguments. The default is no title and *alternate* = ``False``. For
           more information, refer to the `documentation
           <https://mdn.io/Web/CSS/Alternative_style_sheets>`__.
        """
        logger.debug('[app] adding stylesheet: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder, Stylesheet
        if '://' not in filename:
            filename = posixpath.join('_static', filename)
        if alternate:
            rel = u'alternate stylesheet'
        else:
            rel = u'stylesheet'
        css = Stylesheet(filename, title, rel)  # type: ignore
        StandaloneHTMLBuilder.css_files.append(css)

    def add_latex_package(self, packagename, options=None):
        # type: (unicode, unicode) -> None
        r"""Register a package to include in the LaTeX source code.

        Add *packagename* to the list of packages that LaTeX source code will
        include.  If you provide *options*, it will be taken to `\usepackage`
        declaration.

        .. code-block:: python

           app.add_latex_package('mypackage')
           # => \usepackage{mypackage}
           app.add_latex_package('mypackage', 'foo,bar')
           # => \usepackage[foo,bar]{mypackage}

        .. versionadded:: 1.3
        """
        logger.debug('[app] adding latex package: %r', packagename)
        if hasattr(self.builder, 'usepackages'):  # only for LaTeX builder
            self.builder.usepackages.append((packagename, options))  # type: ignore

    def add_lexer(self, alias, lexer):
        # type: (unicode, Any) -> None
        """Register a new lexer for source code.

        Use *lexer*, which must be an instance of a Pygments lexer class, to
        highlight code blocks with the given language *alias*.

        .. versionadded:: 0.6
        """
        logger.debug('[app] adding lexer: %r', (alias, lexer))
        from sphinx.highlighting import lexers
        if lexers is None:
            return
        lexers[alias] = lexer

    def add_autodocumenter(self, cls):
        # type: (Any) -> None
        """Register a new documenter class for the autodoc extension.

        Add *cls* as a new documenter class for the :mod:`sphinx.ext.autodoc`
        extension.  It must be a subclass of
        :class:`sphinx.ext.autodoc.Documenter`.  This allows to auto-document
        new types of objects.  See the source of the autodoc module for
        examples on how to subclass :class:`Documenter`.

        .. todo:: Add real docs for Documenter and subclassing

        .. versionadded:: 0.6
        """
        logger.debug('[app] adding autodocumenter: %r', cls)
        from sphinx.ext.autodoc.directive import AutodocDirective
        self.registry.add_documenter(cls.objtype, cls)
        self.add_directive('auto' + cls.objtype, AutodocDirective)

    def add_autodoc_attrgetter(self, typ, getter):
        # type: (Type, Callable[[Any, unicode, Any], Any]) -> None
        """Register a new ``getattr``-like function for the autodoc extension.

        Add *getter*, which must be a function with an interface compatible to
        the :func:`getattr` builtin, as the autodoc attribute getter for
        objects that are instances of *typ*.  All cases where autodoc needs to
        get an attribute of a type are then handled by this function instead of
        :func:`getattr`.

        .. versionadded:: 0.6
        """
        logger.debug('[app] adding autodoc attrgetter: %r', (typ, getter))
        self.registry.add_autodoc_attrgetter(typ, getter)

    def add_search_language(self, cls):
        # type: (Any) -> None
        """Register a new language for the HTML search index.

        Add *cls*, which must be a subclass of
        :class:`sphinx.search.SearchLanguage`, as a support language for
        building the HTML full-text search index.  The class must have a *lang*
        attribute that indicates the language it should be used for.  See
        :confval:`html_search_language`.

        .. versionadded:: 1.1
        """
        logger.debug('[app] adding search language: %r', cls)
        from sphinx.search import languages, SearchLanguage
        assert issubclass(cls, SearchLanguage)
        languages[cls.lang] = cls

    def add_source_parser(self, suffix, parser):
        # type: (unicode, Parser) -> None
        """Register a parser class for specified *suffix*.

        .. versionadded:: 1.4
        """
        self.registry.add_source_parser(suffix, parser)

    def add_env_collector(self, collector):
        # type: (Type[EnvironmentCollector]) -> None
        """Register an environment collector class.

        Refer to :ref:`collector-api`.

        .. versionadded:: 1.6
        """
        logger.debug('[app] adding environment collector: %r', collector)
        collector().enable(self)

    def add_html_theme(self, name, theme_path):
        # type: (unicode, unicode) -> None
        """Register a HTML Theme.

        The *name* is a name of theme, and *path* is a full path to the theme
        (refs: :ref:`distribute-your-theme`).

        .. versionadded:: 1.6
        """
        logger.debug('[app] adding HTML theme: %r, %r', name, theme_path)
        self.html_themes[name] = theme_path

    # ---- other methods -------------------------------------------------
    def is_parallel_allowed(self, typ):
        # type: (unicode) -> bool
        """Check parallel processing is allowed or not.

        ``typ`` is a type of processing; ``'read'`` or ``'write'``.
        """
        if typ == 'read':
            attrname = 'parallel_read_safe'
            message = __("the %s extension does not declare if it is safe "
                         "for parallel reading, assuming it isn't - please "
                         "ask the extension author to check and make it "
                         "explicit")
        elif typ == 'write':
            attrname = 'parallel_write_safe'
            message = __("the %s extension does not declare if it is safe "
                         "for parallel writing, assuming it isn't - please "
                         "ask the extension author to check and make it "
                         "explicit")
        else:
            raise ValueError('parallel type %s is not supported' % typ)

        for ext in itervalues(self.extensions):
            allowed = getattr(ext, attrname, None)
            if allowed is None:
                logger.warning(message, ext.name)
                logger.warning('doing serial %s', typ)
                return False
            elif not allowed:
                return False

        return True
Beispiel #11
0
class Sphinx(object):

    def __init__(self, srcdir, confdir, outdir, doctreedir, buildername,
                 confoverrides=None, status=sys.stdout, warning=sys.stderr,
                 freshenv=False, warningiserror=False, tags=None, verbosity=0,
                 parallel=0):
        # type: (unicode, unicode, unicode, unicode, unicode, Dict, IO, IO, bool, bool, List[unicode], int, int) -> None  # NOQA
        self.verbosity = verbosity
        self.extensions = {}                    # type: Dict[unicode, Extension]
        self._setting_up_extension = ['?']      # type: List[unicode]
        self.builder = None                     # type: Builder
        self.env = None                         # type: BuildEnvironment
        self.registry = SphinxComponentRegistry()
        self.enumerable_nodes = {}              # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA
        self.post_transforms = []               # type: List[Transform]
        self.html_themes = {}                   # type: Dict[unicode, unicode]

        self.srcdir = srcdir
        self.confdir = confdir
        self.outdir = outdir
        self.doctreedir = doctreedir

        self.parallel = parallel

        if status is None:
            self._status = cStringIO()      # type: IO
            self.quiet = True
        else:
            self._status = status
            self.quiet = False

        if warning is None:
            self._warning = cStringIO()     # type: IO
        else:
            self._warning = warning
        self._warncount = 0
        self.warningiserror = warningiserror
        logging.setup(self, self._status, self._warning)

        self.events = EventManager()

        # keep last few messages for traceback
        # This will be filled by sphinx.util.logging.LastMessagesWriter
        self.messagelog = deque(maxlen=10)  # type: deque

        # say hello to the world
        logger.info(bold('Running Sphinx v%s' % sphinx.__display_version__))

        # status code for command-line application
        self.statuscode = 0

        if not path.isdir(outdir):
            logger.info('making output directory...')
            os.makedirs(outdir)

        # read config
        self.tags = Tags(tags)
        self.config = Config(confdir, CONFIG_FILENAME,
                             confoverrides or {}, self.tags)
        self.config.check_unicode()
        # defer checking types until i18n has been initialized

        # initialize some limited config variables before initialize i18n and loading
        # extensions
        self.config.pre_init_values()

        # set up translation infrastructure
        self._init_i18n()

        # check the Sphinx version if requested
        if self.config.needs_sphinx and self.config.needs_sphinx > sphinx.__display_version__:
            raise VersionRequirementError(
                __('This project needs at least Sphinx v%s and therefore cannot '
                   'be built with this version.') % self.config.needs_sphinx)

        # set confdir to srcdir if -C given (!= no confdir); a few pieces
        # of code expect a confdir to be set
        if self.confdir is None:
            self.confdir = self.srcdir

        # load all built-in extension modules
        for extension in builtin_extensions:
            self.setup_extension(extension)

        # load all user-given extension modules
        for extension in self.config.extensions:
            self.setup_extension(extension)

        # preload builder module (before init config values)
        self.preload_builder(buildername)

        # the config file itself can be an extension
        if self.config.setup:
            self._setting_up_extension = ['conf.py']
            # py31 doesn't have 'callable' function for below check
            if hasattr(self.config.setup, '__call__'):
                self.config.setup(self)
            else:
                raise ConfigError(
                    __("'setup' as currently defined in conf.py isn't a Python callable. "
                       "Please modify its definition to make it a callable function. This is "
                       "needed for conf.py to behave as a Sphinx extension.")
                )

        # now that we know all config values, collect them from conf.py
        self.config.init_values()

        # check extension versions if requested
        verify_required_extensions(self, self.config.needs_extensions)

        # check primary_domain if requested
        primary_domain = self.config.primary_domain
        if primary_domain and not self.registry.has_domain(primary_domain):
            logger.warning(__('primary_domain %r not found, ignored.'), primary_domain)

        # create the builder
        self.builder = self.create_builder(buildername)
        # check all configuration values for permissible types
        self.config.check_types()
        # set up source_parsers
        self._init_source_parsers()
        # set up the build environment
        self._init_env(freshenv)
        # set up the builder
        self._init_builder()
        # set up the enumerable nodes
        self._init_enumerable_nodes()

    def _init_i18n(self):
        # type: () -> None
        """Load translated strings from the configured localedirs if enabled in
        the configuration.
        """
        if self.config.language is not None:
            logger.info(bold('loading translations [%s]... ' % self.config.language),
                        nonl=True)
            user_locale_dirs = [
                path.join(self.srcdir, x) for x in self.config.locale_dirs]
            # compile mo files if sphinx.po file in user locale directories are updated
            for catinfo in find_catalog_source_files(
                    user_locale_dirs, self.config.language, domains=['sphinx'],
                    charset=self.config.source_encoding):
                catinfo.write_mo(self.config.language)
            locale_dirs = [None, path.join(package_dir, 'locale')] + user_locale_dirs
        else:
            locale_dirs = []
        self.translator, has_translation = locale.init(locale_dirs, self.config.language)
        if self.config.language is not None:
            if has_translation or self.config.language == 'en':
                # "en" never needs to be translated
                logger.info(__('done'))
            else:
                logger.info('not available for built-in messages')

    def _init_source_parsers(self):
        # type: () -> None
        for suffix, parser in iteritems(self.config.source_parsers):
            self.add_source_parser(suffix, parser)
        for suffix, parser in iteritems(self.registry.get_source_parsers()):
            if suffix not in self.config.source_suffix and suffix != '*':
                self.config.source_suffix.append(suffix)

    def _init_env(self, freshenv):
        # type: (bool) -> None
        if freshenv:
            self.env = BuildEnvironment(self)
            self.env.find_files(self.config, self.builder)
            for domain in self.registry.create_domains(self.env):
                self.env.domains[domain.name] = domain
        else:
            try:
                logger.info(bold(__('loading pickled environment... ')), nonl=True)
                filename = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
                self.env = BuildEnvironment.frompickle(filename, self)
                self.env.domains = {}
                for domain in self.registry.create_domains(self.env):
                    # this can raise if the data version doesn't fit
                    self.env.domains[domain.name] = domain
                logger.info(__('done'))
            except Exception as err:
                if isinstance(err, IOError) and err.errno == ENOENT:
                    logger.info(__('not yet created'))
                else:
                    logger.info(__('failed: %s'), err)
                self._init_env(freshenv=True)

    def preload_builder(self, name):
        # type: (unicode) -> None
        self.registry.preload_builder(self, name)

    def create_builder(self, name):
        # type: (unicode) -> Builder
        if name is None:
            logger.info(__('No builder selected, using default: html'))
            name = 'html'

        return self.registry.create_builder(self, name)

    def _init_builder(self):
        # type: () -> None
        self.builder.set_environment(self.env)
        self.builder.init()
        self.emit('builder-inited')

    def _init_enumerable_nodes(self):
        # type: () -> None
        for node, settings in iteritems(self.enumerable_nodes):
            self.env.get_domain('std').enumerable_nodes[node] = settings  # type: ignore

    @property
    def buildername(self):
        # type: () -> unicode
        warnings.warn('app.buildername is deprecated. Please use app.builder.name instead',
                      RemovedInSphinx17Warning)
        return self.builder.name

    # ---- main "build" method -------------------------------------------------

    def build(self, force_all=False, filenames=None):
        # type: (bool, List[unicode]) -> None
        try:
            if force_all:
                self.builder.compile_all_catalogs()
                self.builder.build_all()
            elif filenames:
                self.builder.compile_specific_catalogs(filenames)
                self.builder.build_specific(filenames)
            else:
                self.builder.compile_update_catalogs()
                self.builder.build_update()

            status = (self.statuscode == 0 and
                      __('succeeded') or __('finished with problems'))
            if self._warncount:
                logger.info(bold(__('build %s, %s warning%s.') %
                                 (status, self._warncount,
                                  self._warncount != 1 and 's' or '')))
            else:
                logger.info(bold(__('build %s.') % status))
        except Exception as err:
            # delete the saved env to force a fresh build next time
            envfile = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
            if path.isfile(envfile):
                os.unlink(envfile)
            self.emit('build-finished', err)
            raise
        else:
            self.emit('build-finished', None)
        self.builder.cleanup()

    # ---- logging handling ----------------------------------------------------
    def warn(self, message, location=None, prefix=None,
             type=None, subtype=None, colorfunc=None):
        # type: (unicode, unicode, unicode, unicode, unicode, Callable) -> None
        """Emit a warning.

        If *location* is given, it should either be a tuple of (docname, lineno)
        or a string describing the location of the warning as well as possible.

        *prefix* usually should not be changed.

        *type* and *subtype* are used to suppress warnings with :confval:`suppress_warnings`.

        .. note::

           For warnings emitted during parsing, you should use
           :meth:`.BuildEnvironment.warn` since that will collect all
           warnings during parsing for later output.
        """
        if prefix:
            warnings.warn('prefix option of warn() is now deprecated.',
                          RemovedInSphinx17Warning)
        if colorfunc:
            warnings.warn('colorfunc option of warn() is now deprecated.',
                          RemovedInSphinx17Warning)

        warnings.warn('app.warning() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.warning(message, type=type, subtype=subtype, location=location)

    def info(self, message='', nonl=False):
        # type: (unicode, bool) -> None
        """Emit an informational message.

        If *nonl* is true, don't emit a newline at the end (which implies that
        more info output will follow soon.)
        """
        warnings.warn('app.info() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.info(message, nonl=nonl)

    def verbose(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a verbose informational message."""
        warnings.warn('app.verbose() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.verbose(message, *args, **kwargs)

    def debug(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a debug-level informational message."""
        warnings.warn('app.debug() is now deprecated. Use sphinx.util.logging instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    def debug2(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a lowlevel debug-level informational message."""
        warnings.warn('app.debug2() is now deprecated. Use debug() instead.',
                      RemovedInSphinx20Warning)
        logger.debug(message, *args, **kwargs)

    def _display_chunk(chunk):
        # type: (Any) -> unicode
        warnings.warn('app._display_chunk() is now deprecated. '
                      'Use sphinx.util.display_chunk() instead.',
                      RemovedInSphinx17Warning)
        return display_chunk(chunk)

    def old_status_iterator(self, iterable, summary, colorfunc=darkgreen,
                            stringify_func=display_chunk):
        # type: (Iterable, unicode, Callable, Callable[[Any], unicode]) -> Iterator
        warnings.warn('app.old_status_iterator() is now deprecated. '
                      'Use sphinx.util.status_iterator() instead.',
                      RemovedInSphinx17Warning)
        for item in old_status_iterator(iterable, summary,
                                        color="darkgreen", stringify_func=stringify_func):
            yield item

    # new version with progress info
    def status_iterator(self, iterable, summary, colorfunc=darkgreen, length=0,
                        stringify_func=_display_chunk):
        # type: (Iterable, unicode, Callable, int, Callable[[Any], unicode]) -> Iterable
        warnings.warn('app.status_iterator() is now deprecated. '
                      'Use sphinx.util.status_iterator() instead.',
                      RemovedInSphinx17Warning)
        for item in status_iterator(iterable, summary, length=length, verbosity=self.verbosity,
                                    color="darkgreen", stringify_func=stringify_func):
            yield item

    # ---- general extensibility interface -------------------------------------

    def setup_extension(self, extname):
        # type: (unicode) -> None
        """Import and setup a Sphinx extension module. No-op if called twice."""
        logger.debug('[app] setting up extension: %r', extname)
        self.registry.load_extension(self, extname)

    def require_sphinx(self, version):
        # type: (unicode) -> None
        # check the Sphinx version if requested
        if version > sphinx.__display_version__[:3]:
            raise VersionRequirementError(version)

    def import_object(self, objname, source=None):
        # type: (str, unicode) -> Any
        """Import an object from a 'module.name' string."""
        return import_object(objname, source=None)

    # event interface
    def connect(self, event, callback):
        # type: (unicode, Callable) -> int
        listener_id = self.events.connect(event, callback)
        logger.debug('[app] connecting event %r: %r [id=%s]', event, callback, listener_id)
        return listener_id

    def disconnect(self, listener_id):
        # type: (int) -> None
        logger.debug('[app] disconnecting event: [id=%s]', listener_id)
        self.events.disconnect(listener_id)

    def emit(self, event, *args):
        # type: (unicode, Any) -> List
        try:
            logger.debug('[app] emitting event: %r%s', event, repr(args)[:100])
        except Exception:
            # not every object likes to be repr()'d (think
            # random stuff coming via autodoc)
            pass
        return self.events.emit(event, self, *args)

    def emit_firstresult(self, event, *args):
        # type: (unicode, Any) -> Any
        return self.events.emit_firstresult(event, self, *args)

    # registering addon parts

    def add_builder(self, builder):
        # type: (Type[Builder]) -> None
        logger.debug('[app] adding builder: %r', builder)
        self.registry.add_builder(builder)

    def add_config_value(self, name, default, rebuild, types=()):
        # type: (unicode, Any, Union[bool, unicode], Any) -> None
        logger.debug('[app] adding config value: %r',
                     (name, default, rebuild) + ((types,) if types else ()))  # type: ignore
        if name in self.config:
            raise ExtensionError(__('Config value %r already present') % name)
        if rebuild in (False, True):
            rebuild = rebuild and 'env' or ''
        self.config.add(name, default, rebuild, types)

    def add_event(self, name):
        # type: (unicode) -> None
        logger.debug('[app] adding event: %r', name)
        self.events.add(name)

    def set_translator(self, name, translator_class):
        # type: (unicode, Type[nodes.NodeVisitor]) -> None
        logger.info(bold(__('Change of translator for the %s builder.') % name))
        self.registry.add_translator(name, translator_class)

    def add_node(self, node, **kwds):
        # type: (nodes.Node, Any) -> None
        logger.debug('[app] adding node: %r', (node, kwds))
        if not kwds.pop('override', False) and \
           hasattr(nodes.GenericNodeVisitor, 'visit_' + node.__name__):
            logger.warning(__('while setting up extension %s: node class %r is '
                              'already registered, its visitors will be overridden'),
                           self._setting_up_extension, node.__name__,
                           type='app', subtype='add_node')
        nodes._add_node_class_names([node.__name__])
        for key, val in iteritems(kwds):
            try:
                visit, depart = val
            except ValueError:
                raise ExtensionError(__('Value for key %r must be a '
                                        '(visit, depart) function tuple') % key)
            translator = self.registry.translators.get(key)
            translators = []
            if translator is not None:
                translators.append(translator)
            elif key == 'html':
                from sphinx.writers.html import HTMLTranslator
                translators.append(HTMLTranslator)
                if is_html5_writer_available():
                    from sphinx.writers.html5 import HTML5Translator
                    translators.append(HTML5Translator)
            elif key == 'latex':
                from sphinx.writers.latex import LaTeXTranslator
                translators.append(LaTeXTranslator)
            elif key == 'text':
                from sphinx.writers.text import TextTranslator
                translators.append(TextTranslator)
            elif key == 'man':
                from sphinx.writers.manpage import ManualPageTranslator
                translators.append(ManualPageTranslator)
            elif key == 'texinfo':
                from sphinx.writers.texinfo import TexinfoTranslator
                translators.append(TexinfoTranslator)

            for translator in translators:
                setattr(translator, 'visit_' + node.__name__, visit)
                if depart:
                    setattr(translator, 'depart_' + node.__name__, depart)

    def add_enumerable_node(self, node, figtype, title_getter=None, **kwds):
        # type: (nodes.Node, unicode, Callable, Any) -> None
        self.enumerable_nodes[node] = (figtype, title_getter)
        self.add_node(node, **kwds)

    def _directive_helper(self, obj, has_content=None, argument_spec=None, **option_spec):
        # type: (Any, bool, Tuple[int, int, bool], Any) -> Any
        warnings.warn('_directive_helper() is now deprecated. '
                      'Please use sphinx.util.docutils.directive_helper() instead.',
                      RemovedInSphinx17Warning)
        return directive_helper(obj, has_content, argument_spec, **option_spec)

    def add_directive(self, name, obj, content=None, arguments=None, **options):
        # type: (unicode, Any, bool, Tuple[int, int, bool], Any) -> None
        logger.debug('[app] adding directive: %r',
                     (name, obj, content, arguments, options))
        if name in directives._directives:
            logger.warning(__('while setting up extension %s: directive %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_directive')
        directive = directive_helper(obj, content, arguments, **options)
        directives.register_directive(name, directive)

    def add_role(self, name, role):
        # type: (unicode, Any) -> None
        logger.debug('[app] adding role: %r', (name, role))
        if name in roles._roles:
            logger.warning(__('while setting up extension %s: role %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_role')
        roles.register_local_role(name, role)

    def add_generic_role(self, name, nodeclass):
        # type: (unicode, Any) -> None
        # don't use roles.register_generic_role because it uses
        # register_canonical_role
        logger.debug('[app] adding generic role: %r', (name, nodeclass))
        if name in roles._roles:
            logger.warning(__('while setting up extension %s: role %r is '
                              'already registered, it will be overridden'),
                           self._setting_up_extension[-1], name,
                           type='app', subtype='add_generic_role')
        role = roles.GenericRole(name, nodeclass)
        roles.register_local_role(name, role)

    def add_domain(self, domain):
        # type: (Type[Domain]) -> None
        logger.debug('[app] adding domain: %r', domain)
        self.registry.add_domain(domain)

    def override_domain(self, domain):
        # type: (Type[Domain]) -> None
        logger.debug('[app] overriding domain: %r', domain)
        self.registry.override_domain(domain)

    def add_directive_to_domain(self, domain, name, obj,
                                has_content=None, argument_spec=None, **option_spec):
        # type: (unicode, unicode, Any, bool, Any, Any) -> None
        logger.debug('[app] adding directive to domain: %r',
                     (domain, name, obj, has_content, argument_spec, option_spec))
        self.registry.add_directive_to_domain(domain, name, obj,
                                              has_content, argument_spec, **option_spec)

    def add_role_to_domain(self, domain, name, role):
        # type: (unicode, unicode, Any) -> None
        logger.debug('[app] adding role to domain: %r', (domain, name, role))
        self.registry.add_role_to_domain(domain, name, role)

    def add_index_to_domain(self, domain, index):
        # type: (unicode, Type[Index]) -> None
        logger.debug('[app] adding index to domain: %r', (domain, index))
        self.registry.add_index_to_domain(domain, index)

    def add_object_type(self, directivename, rolename, indextemplate='',
                        parse_node=None, ref_nodeclass=None, objname='',
                        doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        logger.debug('[app] adding object type: %r',
                     (directivename, rolename, indextemplate, parse_node,
                      ref_nodeclass, objname, doc_field_types))
        self.registry.add_object_type(directivename, rolename, indextemplate, parse_node,
                                      ref_nodeclass, objname, doc_field_types)

    def add_description_unit(self, directivename, rolename, indextemplate='',
                             parse_node=None, ref_nodeclass=None, objname='',
                             doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        warnings.warn('app.add_description_unit() is now deprecated. '
                      'Use app.add_object_type() instead.',
                      RemovedInSphinx20Warning)
        self.add_object_type(directivename, rolename, indextemplate, parse_node,
                             ref_nodeclass, objname, doc_field_types)

    def add_crossref_type(self, directivename, rolename, indextemplate='',
                          ref_nodeclass=None, objname=''):
        # type: (unicode, unicode, unicode, nodes.Node, unicode) -> None
        logger.debug('[app] adding crossref type: %r',
                     (directivename, rolename, indextemplate, ref_nodeclass,
                      objname))
        self.registry.add_crossref_type(directivename, rolename,
                                        indextemplate, ref_nodeclass, objname)

    def add_transform(self, transform):
        # type: (Type[Transform]) -> None
        logger.debug('[app] adding transform: %r', transform)
        SphinxStandaloneReader.transforms.append(transform)

    def add_post_transform(self, transform):
        # type: (Type[Transform]) -> None
        logger.debug('[app] adding post transform: %r', transform)
        self.post_transforms.append(transform)

    def add_javascript(self, filename):
        # type: (unicode) -> None
        logger.debug('[app] adding javascript: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.script_files.append(filename)
        else:
            StandaloneHTMLBuilder.script_files.append(
                posixpath.join('_static', filename))

    def add_stylesheet(self, filename, alternate=False, title=None):
        # type: (unicode, bool, unicode) -> None
        logger.debug('[app] adding stylesheet: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder, Stylesheet
        if '://' not in filename:
            filename = posixpath.join('_static', filename)
        if alternate:
            rel = u'alternate stylesheet'
        else:
            rel = u'stylesheet'
        css = Stylesheet(filename, title, rel)  # type: ignore
        StandaloneHTMLBuilder.css_files.append(css)

    def add_latex_package(self, packagename, options=None):
        # type: (unicode, unicode) -> None
        logger.debug('[app] adding latex package: %r', packagename)
        if hasattr(self.builder, 'usepackages'):  # only for LaTeX builder
            self.builder.usepackages.append((packagename, options))  # type: ignore

    def add_lexer(self, alias, lexer):
        # type: (unicode, Any) -> None
        logger.debug('[app] adding lexer: %r', (alias, lexer))
        from sphinx.highlighting import lexers
        if lexers is None:
            return
        lexers[alias] = lexer

    def add_autodocumenter(self, cls):
        # type: (Any) -> None
        logger.debug('[app] adding autodocumenter: %r', cls)
        from sphinx.ext import autodoc
        autodoc.add_documenter(cls)
        self.add_directive('auto' + cls.objtype, autodoc.AutoDirective)

    def add_autodoc_attrgetter(self, type, getter):
        # type: (Any, Callable) -> None
        logger.debug('[app] adding autodoc attrgetter: %r', (type, getter))
        from sphinx.ext import autodoc
        autodoc.AutoDirective._special_attrgetters[type] = getter

    def add_search_language(self, cls):
        # type: (Any) -> None
        logger.debug('[app] adding search language: %r', cls)
        from sphinx.search import languages, SearchLanguage
        assert issubclass(cls, SearchLanguage)
        languages[cls.lang] = cls

    def add_source_parser(self, suffix, parser):
        # type: (unicode, Parser) -> None
        logger.debug('[app] adding search source_parser: %r, %r', suffix, parser)
        self.registry.add_source_parser(suffix, parser)

    def add_env_collector(self, collector):
        # type: (Type[EnvironmentCollector]) -> None
        logger.debug('[app] adding environment collector: %r', collector)
        collector().enable(self)

    def add_html_theme(self, name, theme_path):
        # type: (unicode, unicode) -> None
        logger.debug('[app] adding HTML theme: %r, %r', name, theme_path)
        self.html_themes[name] = theme_path
Beispiel #12
0
class Sphinx(object):
    def __init__(self,
                 srcdir,
                 confdir,
                 outdir,
                 doctreedir,
                 buildername,
                 confoverrides=None,
                 status=sys.stdout,
                 warning=sys.stderr,
                 freshenv=False,
                 warningiserror=False,
                 tags=None,
                 verbosity=0,
                 parallel=0):
        # type: (unicode, unicode, unicode, unicode, unicode, Dict, IO, IO, bool, bool, unicode, int, int) -> None  # NOQA
        self.verbosity = verbosity
        self.next_listener_id = 0
        self._extensions = {}  # type: Dict[unicode, Any]
        self._extension_metadata = {
        }  # type: Dict[unicode, Dict[unicode, Any]]
        self._additional_source_parsers = {}  # type: Dict[unicode, Parser]
        self._listeners = {}  # type: Dict[unicode, Dict[int, Callable]]
        self._setting_up_extension = ['?']  # type: List[unicode]
        self.domains = {}  # type: Dict[unicode, Type[Domain]]
        self.buildername = buildername
        self.builderclasses = {}  # type: Dict[unicode, Type[Builder]]
        self.builder = None  # type: Builder
        self.env = None  # type: BuildEnvironment
        self.enumerable_nodes = {
        }  # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA

        self.srcdir = srcdir
        self.confdir = confdir
        self.outdir = outdir
        self.doctreedir = doctreedir

        self.parallel = parallel

        if status is None:
            self._status = cStringIO()  # type: IO
            self.quiet = True
        else:
            self._status = status
            self.quiet = False

        if warning is None:
            self._warning = cStringIO()  # type: IO
        else:
            self._warning = warning
        self._warncount = 0
        self.warningiserror = warningiserror

        self._events = events.copy()
        self._translators = {}  # type: Dict[unicode, nodes.GenericNodeVisitor]

        # keep last few messages for traceback
        self.messagelog = deque(maxlen=10)  # type: deque

        # say hello to the world
        self.info(bold('Running Sphinx v%s' % sphinx.__display_version__))

        # status code for command-line application
        self.statuscode = 0

        if not path.isdir(outdir):
            self.info('making output directory...')
            os.makedirs(outdir)

        # read config
        self.tags = Tags(tags)
        self.config = Config(confdir, CONFIG_FILENAME, confoverrides or {},
                             self.tags)
        self.config.check_unicode(self.warn)
        # defer checking types until i18n has been initialized

        # initialize some limited config variables before loading extensions
        self.config.pre_init_values(self.warn)

        # check the Sphinx version if requested
        if self.config.needs_sphinx and self.config.needs_sphinx > sphinx.__display_version__:
            raise VersionRequirementError(
                'This project needs at least Sphinx v%s and therefore cannot '
                'be built with this version.' % self.config.needs_sphinx)

        # force preload html_translator_class
        if self.config.html_translator_class:
            translator_class = self.import_object(
                self.config.html_translator_class,
                'html_translator_class setting')
            self.set_translator('html', translator_class)

        # set confdir to srcdir if -C given (!= no confdir); a few pieces
        # of code expect a confdir to be set
        if self.confdir is None:
            self.confdir = self.srcdir

        # load all built-in extension modules
        for extension in builtin_extensions:
            self.setup_extension(extension)

        # extension loading support for alabaster theme
        # self.config.html_theme is not set from conf.py at here
        # for now, sphinx always load a 'alabaster' extension.
        if 'alabaster' not in self.config.extensions:
            self.config.extensions.append('alabaster')

        # load all user-given extension modules
        for extension in self.config.extensions:
            self.setup_extension(extension)
        # the config file itself can be an extension
        if self.config.setup:
            self._setting_up_extension = ['conf.py']
            # py31 doesn't have 'callable' function for below check
            if hasattr(self.config.setup, '__call__'):
                self.config.setup(self)
            else:
                raise ConfigError(
                    "'setup' that is specified in the conf.py has not been " +
                    "callable. Please provide a callable `setup` function " +
                    "in order to behave as a sphinx extension conf.py itself.")

        # now that we know all config values, collect them from conf.py
        self.config.init_values(self.warn)

        # check extension versions if requested
        if self.config.needs_extensions:
            for extname, needs_ver in self.config.needs_extensions.items():
                if extname not in self._extensions:
                    self.warn(
                        'needs_extensions config value specifies a '
                        'version requirement for extension %s, but it is '
                        'not loaded' % extname)
                    continue
                has_ver = self._extension_metadata[extname]['version']
                if has_ver == 'unknown version' or needs_ver > has_ver:
                    raise VersionRequirementError(
                        'This project needs the extension %s at least in '
                        'version %s and therefore cannot be built with the '
                        'loaded version (%s).' % (extname, needs_ver, has_ver))

        # check primary_domain if requested
        if self.config.primary_domain and self.config.primary_domain not in self.domains:
            self.warn('primary_domain %r not found, ignored.' %
                      self.config.primary_domain)

        # set up translation infrastructure
        self._init_i18n()
        # check all configuration values for permissible types
        self.config.check_types(self.warn)
        # set up source_parsers
        self._init_source_parsers()
        # set up the build environment
        self._init_env(freshenv)
        # set up the builder
        self._init_builder(self.buildername)
        # set up the enumerable nodes
        self._init_enumerable_nodes()

    def _init_i18n(self):
        # type: () -> None
        """Load translated strings from the configured localedirs if enabled in
        the configuration.
        """
        if self.config.language is not None:
            self.info(bold('loading translations [%s]... ' %
                           self.config.language),
                      nonl=True)
            user_locale_dirs = [
                path.join(self.srcdir, x) for x in self.config.locale_dirs
            ]
            # compile mo files if sphinx.po file in user locale directories are updated
            for catinfo in find_catalog_source_files(
                    user_locale_dirs,
                    self.config.language,
                    domains=['sphinx'],
                    charset=self.config.source_encoding):
                catinfo.write_mo(self.config.language)
            locale_dirs = [None, path.join(package_dir, 'locale')
                           ] + user_locale_dirs
        else:
            locale_dirs = []
        self.translator, has_translation = locale.init(locale_dirs,
                                                       self.config.language)
        if self.config.language is not None:
            if has_translation or self.config.language == 'en':
                # "en" never needs to be translated
                self.info('done')
            else:
                self.info('not available for built-in messages')

    def _init_source_parsers(self):
        # type: () -> None
        for suffix, parser in iteritems(self._additional_source_parsers):
            if suffix not in self.config.source_suffix:
                self.config.source_suffix.append(suffix)
            if suffix not in self.config.source_parsers:
                self.config.source_parsers[suffix] = parser

    def _init_env(self, freshenv):
        # type: (bool) -> None
        if freshenv:
            self.env = BuildEnvironment(self.srcdir, self.doctreedir,
                                        self.config)
            self.env.set_warnfunc(self.warn)
            self.env.find_files(self.config)
            for domain in self.domains.keys():
                self.env.domains[domain] = self.domains[domain](self.env)
        else:
            try:
                self.info(bold('loading pickled environment... '), nonl=True)
                self.env = BuildEnvironment.frompickle(
                    self.srcdir, self.config,
                    path.join(self.doctreedir, ENV_PICKLE_FILENAME))
                self.env.set_warnfunc(self.warn)
                self.env.init_managers()
                self.env.domains = {}
                for domain in self.domains.keys():
                    # this can raise if the data version doesn't fit
                    self.env.domains[domain] = self.domains[domain](self.env)
                self.info('done')
            except Exception as err:
                if isinstance(err, IOError) and err.errno == ENOENT:
                    self.info('not yet created')
                else:
                    self.info('failed: %s' % err)
                return self._init_env(freshenv=True)

    def _init_builder(self, buildername):
        # type: (unicode) -> None
        if buildername is None:
            print('No builder selected, using default: html',
                  file=self._status)
            buildername = 'html'
        if buildername not in self.builderclasses:
            raise SphinxError('Builder name %s not registered' % buildername)

        builderclass = self.builderclasses[buildername]
        self.builder = builderclass(self)
        self.emit('builder-inited')

    def _init_enumerable_nodes(self):
        # type: () -> None
        for node, settings in iteritems(self.enumerable_nodes):
            self.env.get_domain(
                'std').enumerable_nodes[node] = settings  # type: ignore

    # ---- main "build" method -------------------------------------------------

    def build(self, force_all=False, filenames=None):
        # type: (bool, List[unicode]) -> None
        try:
            if force_all:
                self.builder.compile_all_catalogs()
                self.builder.build_all()
            elif filenames:
                self.builder.compile_specific_catalogs(filenames)
                self.builder.build_specific(filenames)
            else:
                self.builder.compile_update_catalogs()
                self.builder.build_update()

            status = (self.statuscode == 0 and 'succeeded'
                      or 'finished with problems')
            if self._warncount:
                self.info(
                    bold('build %s, %s warning%s.' %
                         (status, self._warncount, self._warncount != 1 and 's'
                          or '')))
            else:
                self.info(bold('build %s.' % status))
        except Exception as err:
            # delete the saved env to force a fresh build next time
            envfile = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
            if path.isfile(envfile):
                os.unlink(envfile)
            self.emit('build-finished', err)
            raise
        else:
            self.emit('build-finished', None)
        self.builder.cleanup()

    # ---- logging handling ----------------------------------------------------

    def _log(self, message, wfile, nonl=False):
        # type: (unicode, IO, bool) -> None
        try:
            wfile.write(message)
        except UnicodeEncodeError:
            encoding = getattr(wfile, 'encoding', 'ascii') or 'ascii'
            wfile.write(message.encode(encoding, 'replace'))
        if not nonl:
            wfile.write('\n')
        if hasattr(wfile, 'flush'):
            wfile.flush()
        self.messagelog.append(message)

    def warn(self,
             message,
             location=None,
             prefix='WARNING: ',
             type=None,
             subtype=None,
             colorfunc=darkred):
        # type: (unicode, unicode, unicode, unicode, unicode, Callable) -> None
        """Emit a warning.

        If *location* is given, it should either be a tuple of (docname, lineno)
        or a string describing the location of the warning as well as possible.

        *prefix* usually should not be changed.

        *type* and *subtype* are used to suppress warnings with :confval:`suppress_warnings`.

        .. note::

           For warnings emitted during parsing, you should use
           :meth:`.BuildEnvironment.warn` since that will collect all
           warnings during parsing for later output.
        """
        if is_suppressed_warning(type, subtype, self.config.suppress_warnings):
            return

        if isinstance(location, tuple):
            docname, lineno = location
            if docname:
                location = '%s:%s' % (self.env.doc2path(docname), lineno or '')
            else:
                location = None
        warntext = location and '%s: %s%s\n' % (location, prefix, message) or \
            '%s%s\n' % (prefix, message)
        if self.warningiserror:
            raise SphinxWarning(warntext)
        self._warncount += 1
        self._log(colorfunc(warntext), self._warning, True)

    def info(self, message='', nonl=False):
        # type: (unicode, bool) -> None
        """Emit an informational message.

        If *nonl* is true, don't emit a newline at the end (which implies that
        more info output will follow soon.)
        """
        self._log(message, self._status, nonl)

    def verbose(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a verbose informational message.

        The message will only be emitted for verbosity levels >= 1 (i.e. at
        least one ``-v`` option was given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 1:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(message, self._status)

    def debug(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a debug-level informational message.

        The message will only be emitted for verbosity levels >= 2 (i.e. at
        least two ``-v`` options were given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 2:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(darkgray(message), self._status)

    def debug2(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a lowlevel debug-level informational message.

        The message will only be emitted for verbosity level 3 (i.e. three
        ``-v`` options were given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 3:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(lightgray(message), self._status)

    def _display_chunk(chunk):
        # type: (Any) -> unicode
        if isinstance(chunk, (list, tuple)):
            if len(chunk) == 1:
                return text_type(chunk[0])
            return '%s .. %s' % (chunk[0], chunk[-1])
        return text_type(chunk)

    def old_status_iterator(self,
                            iterable,
                            summary,
                            colorfunc=darkgreen,
                            stringify_func=_display_chunk):
        # type: (Iterable, unicode, Callable, Callable) -> Iterator
        l = 0
        for item in iterable:
            if l == 0:
                self.info(bold(summary), nonl=1)
                l = 1
            self.info(colorfunc(stringify_func(item)) + ' ', nonl=1)
            yield item
        if l == 1:
            self.info()

    # new version with progress info
    def status_iterator(self,
                        iterable,
                        summary,
                        colorfunc=darkgreen,
                        length=0,
                        stringify_func=_display_chunk):
        # type: (Iterable, unicode, Callable, int, Callable) -> Iterable
        if length == 0:
            for item in self.old_status_iterator(iterable, summary, colorfunc,
                                                 stringify_func):
                yield item
            return
        l = 0
        summary = bold(summary)
        for item in iterable:
            l += 1
            s = '%s[%3d%%] %s' % (summary, 100 * l / length,
                                  colorfunc(stringify_func(item)))
            if self.verbosity:
                s += '\n'
            else:
                s = term_width_line(s)
            self.info(s, nonl=1)
            yield item
        if l > 0:
            self.info()

    # ---- general extensibility interface -------------------------------------

    def setup_extension(self, extension):
        # type: (unicode) -> None
        """Import and setup a Sphinx extension module. No-op if called twice."""
        self.debug('[app] setting up extension: %r', extension)
        if extension in self._extensions:
            return
        if extension in EXTENSION_BLACKLIST:
            self.warn(
                'the extension %r was already merged with Sphinx since version %s; '
                'this extension is ignored.' %
                (extension, EXTENSION_BLACKLIST[extension]))
            return
        self._setting_up_extension.append(extension)
        try:
            mod = __import__(extension, None, None, ['setup'])
        except ImportError as err:
            self.verbose('Original exception:\n' + traceback.format_exc())
            raise ExtensionError('Could not import extension %s' % extension,
                                 err)
        if not hasattr(mod, 'setup'):
            self.warn('extension %r has no setup() function; is it really '
                      'a Sphinx extension module?' % extension)
            ext_meta = None
        else:
            try:
                ext_meta = mod.setup(self)
            except VersionRequirementError as err:
                # add the extension name to the version required
                raise VersionRequirementError(
                    'The %s extension used by this project needs at least '
                    'Sphinx v%s; it therefore cannot be built with this '
                    'version.' % (extension, err))
        if ext_meta is None:
            ext_meta = {}
            # special-case for compatibility
            if extension == 'rst2pdf.pdfbuilder':
                ext_meta = {'parallel_read_safe': True}
        try:
            if not ext_meta.get('version'):
                ext_meta['version'] = 'unknown version'
        except Exception:
            self.warn('extension %r returned an unsupported object from '
                      'its setup() function; it should return None or a '
                      'metadata dictionary' % extension)
            ext_meta = {'version': 'unknown version'}
        self._extensions[extension] = mod
        self._extension_metadata[extension] = ext_meta
        self._setting_up_extension.pop()

    def require_sphinx(self, version):
        # type: (unicode) -> None
        # check the Sphinx version if requested
        if version > sphinx.__display_version__[:3]:
            raise VersionRequirementError(version)

    def import_object(self, objname, source=None):
        # type: (str, unicode) -> Any
        """Import an object from a 'module.name' string."""
        return import_object(objname, source=None)

    # event interface

    def _validate_event(self, event):
        # type: (unicode) -> None
        if event not in self._events:
            raise ExtensionError('Unknown event name: %s' % event)

    def connect(self, event, callback):
        # type: (unicode, Callable) -> int
        self._validate_event(event)
        listener_id = self.next_listener_id
        if event not in self._listeners:
            self._listeners[event] = {listener_id: callback}
        else:
            self._listeners[event][listener_id] = callback
        self.next_listener_id += 1
        self.debug('[app] connecting event %r: %r [id=%s]', event, callback,
                   listener_id)
        return listener_id

    def disconnect(self, listener_id):
        # type: (int) -> None
        self.debug('[app] disconnecting event: [id=%s]', listener_id)
        for event in itervalues(self._listeners):
            event.pop(listener_id, None)

    def emit(self, event, *args):
        # type: (unicode, Any) -> List
        try:
            self.debug2('[app] emitting event: %r%s', event, repr(args)[:100])
        except Exception:
            # not every object likes to be repr()'d (think
            # random stuff coming via autodoc)
            pass
        results = []
        if event in self._listeners:
            for _, callback in iteritems(self._listeners[event]):
                results.append(callback(self, *args))
        return results

    def emit_firstresult(self, event, *args):
        # type: (unicode, Any) -> Any
        for result in self.emit(event, *args):
            if result is not None:
                return result
        return None

    # registering addon parts

    def add_builder(self, builder):
        # type: (Type[Builder]) -> None
        self.debug('[app] adding builder: %r', builder)
        if not hasattr(builder, 'name'):
            raise ExtensionError('Builder class %s has no "name" attribute' %
                                 builder)
        if builder.name in self.builderclasses:
            raise ExtensionError(
                'Builder %r already exists (in module %s)' %
                (builder.name, self.builderclasses[builder.name].__module__))
        self.builderclasses[builder.name] = builder

    def add_config_value(self, name, default, rebuild, types=()):
        # type: (unicode, Any, Union[bool, unicode], Any) -> None
        self.debug('[app] adding config value: %r',
                   (name, default, rebuild) + ((types, ) if types else
                                               ()))  # type: ignore
        if name in self.config.values:
            raise ExtensionError('Config value %r already present' % name)
        if rebuild in (False, True):
            rebuild = rebuild and 'env' or ''
        self.config.values[name] = (default, rebuild, types)

    def add_event(self, name):
        # type: (unicode) -> None
        self.debug('[app] adding event: %r', name)
        if name in self._events:
            raise ExtensionError('Event %r already present' % name)
        self._events[name] = ''

    def set_translator(self, name, translator_class):
        # type: (unicode, Any) -> None
        self.info(bold('A Translator for the %s builder is changed.' % name))
        self._translators[name] = translator_class

    def add_node(self, node, **kwds):
        # type: (nodes.Node, Any) -> None
        self.debug('[app] adding node: %r', (node, kwds))
        if not kwds.pop('override', False) and \
           hasattr(nodes.GenericNodeVisitor, 'visit_' + node.__name__):
            self.warn('while setting up extension %s: node class %r is '
                      'already registered, its visitors will be overridden' %
                      (self._setting_up_extension, node.__name__),
                      type='app',
                      subtype='add_node')
        nodes._add_node_class_names([node.__name__])
        for key, val in iteritems(kwds):
            try:
                visit, depart = val
            except ValueError:
                raise ExtensionError('Value for key %r must be a '
                                     '(visit, depart) function tuple' % key)
            translator = self._translators.get(key)
            if translator is not None:
                pass
            elif key == 'html':
                from sphinx.writers.html import HTMLTranslator as translator  # type: ignore
            elif key == 'latex':
                from sphinx.writers.latex import LaTeXTranslator as translator  # type: ignore
            elif key == 'text':
                from sphinx.writers.text import TextTranslator as translator  # type: ignore
            elif key == 'man':
                from sphinx.writers.manpage import ManualPageTranslator as translator  # type: ignore  # NOQA
            elif key == 'texinfo':
                from sphinx.writers.texinfo import TexinfoTranslator as translator  # type: ignore  # NOQA
            else:
                # ignore invalid keys for compatibility
                continue
            setattr(translator, 'visit_' + node.__name__, visit)
            if depart:
                setattr(translator, 'depart_' + node.__name__, depart)

    def add_enumerable_node(self, node, figtype, title_getter=None, **kwds):
        # type: (nodes.Node, unicode, Callable, Any) -> None
        self.enumerable_nodes[node] = (figtype, title_getter)
        self.add_node(node, **kwds)

    def _directive_helper(self, obj, content=None, arguments=None, **options):
        # type: (Any, unicode, Any, Any) -> Any
        if isinstance(obj, (types.FunctionType, types.MethodType)):
            obj.content = content  # type: ignore
            obj.arguments = arguments or (0, 0, False)  # type: ignore
            obj.options = options  # type: ignore
            return convert_directive_function(obj)
        else:
            if content or arguments or options:
                raise ExtensionError('when adding directive classes, no '
                                     'additional arguments may be given')
            return obj

    def add_directive(self,
                      name,
                      obj,
                      content=None,
                      arguments=None,
                      **options):
        # type: (unicode, Any, unicode, Any, Any) -> None
        self.debug('[app] adding directive: %r',
                   (name, obj, content, arguments, options))
        if name in directives._directives:
            self.warn('while setting up extension %s: directive %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app',
                      subtype='add_directive')
        directives.register_directive(
            name, self._directive_helper(obj, content, arguments, **options))

    def add_role(self, name, role):
        # type: (unicode, Any) -> None
        self.debug('[app] adding role: %r', (name, role))
        if name in roles._roles:
            self.warn('while setting up extension %s: role %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app',
                      subtype='add_role')
        roles.register_local_role(name, role)

    def add_generic_role(self, name, nodeclass):
        # type: (unicode, Any) -> None
        # don't use roles.register_generic_role because it uses
        # register_canonical_role
        self.debug('[app] adding generic role: %r', (name, nodeclass))
        if name in roles._roles:
            self.warn('while setting up extension %s: role %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app',
                      subtype='add_generic_role')
        role = roles.GenericRole(name, nodeclass)
        roles.register_local_role(name, role)

    def add_domain(self, domain):
        # type: (Type[Domain]) -> None
        self.debug('[app] adding domain: %r', domain)
        if domain.name in self.domains:
            raise ExtensionError('domain %s already registered' % domain.name)
        self.domains[domain.name] = domain

    def override_domain(self, domain):
        # type: (Type[Domain]) -> None
        self.debug('[app] overriding domain: %r', domain)
        if domain.name not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain.name)
        if not issubclass(domain, self.domains[domain.name]):
            raise ExtensionError('new domain not a subclass of registered %s '
                                 'domain' % domain.name)
        self.domains[domain.name] = domain

    def add_directive_to_domain(self,
                                domain,
                                name,
                                obj,
                                content=None,
                                arguments=None,
                                **options):
        # type: (unicode, unicode, Any, unicode, Any, Any) -> None
        self.debug('[app] adding directive to domain: %r',
                   (domain, name, obj, content, arguments, options))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].directives[name] = \
            self._directive_helper(obj, content, arguments, **options)

    def add_role_to_domain(self, domain, name, role):
        # type: (unicode, unicode, Any) -> None
        self.debug('[app] adding role to domain: %r', (domain, name, role))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].roles[name] = role

    def add_index_to_domain(self, domain, index):
        # type: (unicode, unicode) -> None
        self.debug('[app] adding index to domain: %r', (domain, index))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].indices.append(index)

    def add_object_type(self,
                        directivename,
                        rolename,
                        indextemplate='',
                        parse_node=None,
                        ref_nodeclass=None,
                        objname='',
                        doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        self.debug('[app] adding object type: %r',
                   (directivename, rolename, indextemplate, parse_node,
                    ref_nodeclass, objname, doc_field_types))
        StandardDomain.object_types[directivename] = \
            ObjType(objname or directivename, rolename)
        # create a subclass of GenericObject as the new directive
        new_directive = type(
            directivename,
            (GenericObject, object),  # type: ignore
            {
                'indextemplate': indextemplate,
                'parse_node': staticmethod(parse_node),  # type: ignore
                'doc_field_types': doc_field_types
            })
        StandardDomain.directives[directivename] = new_directive
        # XXX support more options?
        StandardDomain.roles[rolename] = XRefRole(innernodeclass=ref_nodeclass)

    # backwards compatible alias
    add_description_unit = add_object_type

    def add_crossref_type(self,
                          directivename,
                          rolename,
                          indextemplate='',
                          ref_nodeclass=None,
                          objname=''):
        # type: (unicode, unicode, unicode, nodes.Node, unicode) -> None
        self.debug(
            '[app] adding crossref type: %r',
            (directivename, rolename, indextemplate, ref_nodeclass, objname))
        StandardDomain.object_types[directivename] = \
            ObjType(objname or directivename, rolename)
        # create a subclass of Target as the new directive
        new_directive = type(
            directivename,
            (Target, object),  # type: ignore
            {'indextemplate': indextemplate})
        StandardDomain.directives[directivename] = new_directive
        # XXX support more options?
        StandardDomain.roles[rolename] = XRefRole(innernodeclass=ref_nodeclass)

    def add_transform(self, transform):
        # type: (Transform) -> None
        self.debug('[app] adding transform: %r', transform)
        SphinxStandaloneReader.transforms.append(transform)

    def add_javascript(self, filename):
        # type: (unicode) -> None
        self.debug('[app] adding javascript: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.script_files.append(filename)
        else:
            StandaloneHTMLBuilder.script_files.append(
                posixpath.join('_static', filename))

    def add_stylesheet(self, filename):
        # type: (unicode) -> None
        self.debug('[app] adding stylesheet: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.css_files.append(filename)
        else:
            StandaloneHTMLBuilder.css_files.append(
                posixpath.join('_static', filename))

    def add_latex_package(self, packagename, options=None):
        # type: (unicode, unicode) -> None
        self.debug('[app] adding latex package: %r', packagename)
        self.builder.usepackages.append((packagename, options))

    def add_lexer(self, alias, lexer):
        # type: (unicode, Any) -> None
        self.debug('[app] adding lexer: %r', (alias, lexer))
        from sphinx.highlighting import lexers
        if lexers is None:
            return
        lexers[alias] = lexer

    def add_autodocumenter(self, cls):
        # type: (Any) -> None
        self.debug('[app] adding autodocumenter: %r', cls)
        from sphinx.ext import autodoc
        autodoc.add_documenter(cls)
        self.add_directive('auto' + cls.objtype, autodoc.AutoDirective)

    def add_autodoc_attrgetter(self, type, getter):
        # type: (Any, Callable) -> None
        self.debug('[app] adding autodoc attrgetter: %r', (type, getter))
        from sphinx.ext import autodoc
        autodoc.AutoDirective._special_attrgetters[type] = getter

    def add_search_language(self, cls):
        # type: (Any) -> None
        self.debug('[app] adding search language: %r', cls)
        from sphinx.search import languages, SearchLanguage
        assert issubclass(cls, SearchLanguage)
        languages[cls.lang] = cls

    def add_source_parser(self, suffix, parser):
        # type: (unicode, Parser) -> None
        self.debug('[app] adding search source_parser: %r, %r', suffix, parser)
        if suffix in self._additional_source_parsers:
            self.warn('while setting up extension %s: source_parser for %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], suffix),
                      type='app',
                      subtype='add_source_parser')
        self._additional_source_parsers[suffix] = parser
Beispiel #13
0
class Sphinx(object):

    def __init__(self, srcdir, confdir, outdir, doctreedir, buildername,
                 confoverrides=None, status=sys.stdout, warning=sys.stderr,
                 freshenv=False, warningiserror=False, tags=None, verbosity=0,
                 parallel=0):
        # type: (unicode, unicode, unicode, unicode, unicode, Dict, IO, IO, bool, bool, unicode, int, int) -> None  # NOQA
        self.verbosity = verbosity
        self.next_listener_id = 0
        self._extensions = {}                   # type: Dict[unicode, Any]
        self._extension_metadata = {}           # type: Dict[unicode, Dict[unicode, Any]]
        self._additional_source_parsers = {}    # type: Dict[unicode, Parser]
        self._listeners = {}                    # type: Dict[unicode, Dict[int, Callable]]
        self._setting_up_extension = ['?']      # type: List[unicode]
        self.domains = {}                       # type: Dict[unicode, Type[Domain]]
        self.buildername = buildername
        self.builderclasses = {}                # type: Dict[unicode, Type[Builder]]
        self.builder = None                     # type: Builder
        self.env = None                         # type: BuildEnvironment
        self.enumerable_nodes = {}              # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA

        self.srcdir = srcdir
        self.confdir = confdir
        self.outdir = outdir
        self.doctreedir = doctreedir

        self.parallel = parallel

        if status is None:
            self._status = cStringIO()      # type: IO
            self.quiet = True
        else:
            self._status = status
            self.quiet = False

        if warning is None:
            self._warning = cStringIO()     # type: IO
        else:
            self._warning = warning
        self._warncount = 0
        self.warningiserror = warningiserror

        self._events = events.copy()
        self._translators = {}              # type: Dict[unicode, nodes.GenericNodeVisitor]

        # keep last few messages for traceback
        self.messagelog = deque(maxlen=10)  # type: deque

        # say hello to the world
        self.info(bold('Running Sphinx v%s' % sphinx.__display_version__))

        # status code for command-line application
        self.statuscode = 0

        if not path.isdir(outdir):
            self.info('making output directory...')
            os.makedirs(outdir)

        # read config
        self.tags = Tags(tags)
        self.config = Config(confdir, CONFIG_FILENAME,
                             confoverrides or {}, self.tags)
        self.config.check_unicode(self.warn)
        # defer checking types until i18n has been initialized

        # initialize some limited config variables before loading extensions
        self.config.pre_init_values(self.warn)

        # check the Sphinx version if requested
        if self.config.needs_sphinx and self.config.needs_sphinx > sphinx.__display_version__:
            raise VersionRequirementError(
                'This project needs at least Sphinx v%s and therefore cannot '
                'be built with this version.' % self.config.needs_sphinx)

        # force preload html_translator_class
        if self.config.html_translator_class:
            translator_class = self.import_object(self.config.html_translator_class,
                                                  'html_translator_class setting')
            self.set_translator('html', translator_class)

        # set confdir to srcdir if -C given (!= no confdir); a few pieces
        # of code expect a confdir to be set
        if self.confdir is None:
            self.confdir = self.srcdir

        # load all built-in extension modules
        for extension in builtin_extensions:
            self.setup_extension(extension)

        # extension loading support for alabaster theme
        # self.config.html_theme is not set from conf.py at here
        # for now, sphinx always load a 'alabaster' extension.
        if 'alabaster' not in self.config.extensions:
            self.config.extensions.append('alabaster')

        # load all user-given extension modules
        for extension in self.config.extensions:
            self.setup_extension(extension)
        # the config file itself can be an extension
        if self.config.setup:
            self._setting_up_extension = ['conf.py']
            # py31 doesn't have 'callable' function for below check
            if hasattr(self.config.setup, '__call__'):
                self.config.setup(self)
            else:
                raise ConfigError(
                    "'setup' that is specified in the conf.py has not been " +
                    "callable. Please provide a callable `setup` function " +
                    "in order to behave as a sphinx extension conf.py itself."
                )

        # now that we know all config values, collect them from conf.py
        self.config.init_values(self.warn)

        # check extension versions if requested
        if self.config.needs_extensions:
            for extname, needs_ver in self.config.needs_extensions.items():
                if extname not in self._extensions:
                    self.warn('needs_extensions config value specifies a '
                              'version requirement for extension %s, but it is '
                              'not loaded' % extname)
                    continue
                has_ver = self._extension_metadata[extname]['version']
                if has_ver == 'unknown version' or needs_ver > has_ver:
                    raise VersionRequirementError(
                        'This project needs the extension %s at least in '
                        'version %s and therefore cannot be built with the '
                        'loaded version (%s).' % (extname, needs_ver, has_ver))

        # check primary_domain if requested
        if self.config.primary_domain and self.config.primary_domain not in self.domains:
            self.warn('primary_domain %r not found, ignored.' % self.config.primary_domain)

        # set up translation infrastructure
        self._init_i18n()
        # check all configuration values for permissible types
        self.config.check_types(self.warn)
        # set up source_parsers
        self._init_source_parsers()
        # set up the build environment
        self._init_env(freshenv)
        # set up the builder
        self._init_builder(self.buildername)
        # set up the enumerable nodes
        self._init_enumerable_nodes()

    def _init_i18n(self):
        # type: () -> None
        """Load translated strings from the configured localedirs if enabled in
        the configuration.
        """
        if self.config.language is not None:
            self.info(bold('loading translations [%s]... ' %
                           self.config.language), nonl=True)
            user_locale_dirs = [
                path.join(self.srcdir, x) for x in self.config.locale_dirs]
            # compile mo files if sphinx.po file in user locale directories are updated
            for catinfo in find_catalog_source_files(
                    user_locale_dirs, self.config.language, domains=['sphinx'],
                    charset=self.config.source_encoding):
                catinfo.write_mo(self.config.language)
            locale_dirs = [None, path.join(package_dir, 'locale')] + user_locale_dirs
        else:
            locale_dirs = []
        self.translator, has_translation = locale.init(locale_dirs, self.config.language)
        if self.config.language is not None:
            if has_translation or self.config.language == 'en':
                # "en" never needs to be translated
                self.info('done')
            else:
                self.info('not available for built-in messages')

    def _init_source_parsers(self):
        # type: () -> None
        for suffix, parser in iteritems(self._additional_source_parsers):
            if suffix not in self.config.source_suffix:
                self.config.source_suffix.append(suffix)
            if suffix not in self.config.source_parsers:
                self.config.source_parsers[suffix] = parser

    def _init_env(self, freshenv):
        # type: (bool) -> None
        if freshenv:
            self.env = BuildEnvironment(self.srcdir, self.doctreedir, self.config)
            self.env.set_warnfunc(self.warn)
            self.env.find_files(self.config, self.buildername)
            for domain in self.domains.keys():
                self.env.domains[domain] = self.domains[domain](self.env)
        else:
            try:
                self.info(bold('loading pickled environment... '), nonl=True)
                self.env = BuildEnvironment.frompickle(
                    self.srcdir, self.config, path.join(self.doctreedir, ENV_PICKLE_FILENAME))
                self.env.set_warnfunc(self.warn)
                self.env.init_managers()
                self.env.domains = {}
                for domain in self.domains.keys():
                    # this can raise if the data version doesn't fit
                    self.env.domains[domain] = self.domains[domain](self.env)
                self.info('done')
            except Exception as err:
                if isinstance(err, IOError) and err.errno == ENOENT:
                    self.info('not yet created')
                else:
                    self.info('failed: %s' % err)
                self._init_env(freshenv=True)

    def _init_builder(self, buildername):
        # type: (unicode) -> None
        if buildername is None:
            print('No builder selected, using default: html', file=self._status)
            buildername = 'html'
        if buildername not in self.builderclasses:
            raise SphinxError('Builder name %s not registered' % buildername)

        builderclass = self.builderclasses[buildername]
        self.builder = builderclass(self)
        self.emit('builder-inited')

    def _init_enumerable_nodes(self):
        # type: () -> None
        for node, settings in iteritems(self.enumerable_nodes):
            self.env.get_domain('std').enumerable_nodes[node] = settings  # type: ignore

    # ---- main "build" method -------------------------------------------------

    def build(self, force_all=False, filenames=None):
        # type: (bool, List[unicode]) -> None
        try:
            if force_all:
                self.builder.compile_all_catalogs()
                self.builder.build_all()
            elif filenames:
                self.builder.compile_specific_catalogs(filenames)
                self.builder.build_specific(filenames)
            else:
                self.builder.compile_update_catalogs()
                self.builder.build_update()

            status = (self.statuscode == 0 and
                      'succeeded' or 'finished with problems')
            if self._warncount:
                self.info(bold('build %s, %s warning%s.' %
                               (status, self._warncount,
                                self._warncount != 1 and 's' or '')))
            else:
                self.info(bold('build %s.' % status))
        except Exception as err:
            # delete the saved env to force a fresh build next time
            envfile = path.join(self.doctreedir, ENV_PICKLE_FILENAME)
            if path.isfile(envfile):
                os.unlink(envfile)
            self.emit('build-finished', err)
            raise
        else:
            self.emit('build-finished', None)
        self.builder.cleanup()

    # ---- logging handling ----------------------------------------------------

    def _log(self, message, wfile, nonl=False):
        # type: (unicode, IO, bool) -> None
        try:
            wfile.write(message)
        except UnicodeEncodeError:
            encoding = getattr(wfile, 'encoding', 'ascii') or 'ascii'
            # wfile.write accept only str, not bytes.So, we encode and replace
            # non-encodable characters, then decode them.
            wfile.write(message.encode(encoding, 'replace').decode(encoding))
        if not nonl:
            wfile.write('\n')
        if hasattr(wfile, 'flush'):
            wfile.flush()
        self.messagelog.append(message)

    def warn(self, message, location=None, prefix='WARNING: ',
             type=None, subtype=None, colorfunc=darkred):
        # type: (unicode, unicode, unicode, unicode, unicode, Callable) -> None
        """Emit a warning.

        If *location* is given, it should either be a tuple of (docname, lineno)
        or a string describing the location of the warning as well as possible.

        *prefix* usually should not be changed.

        *type* and *subtype* are used to suppress warnings with :confval:`suppress_warnings`.

        .. note::

           For warnings emitted during parsing, you should use
           :meth:`.BuildEnvironment.warn` since that will collect all
           warnings during parsing for later output.
        """
        if is_suppressed_warning(type, subtype, self.config.suppress_warnings):
            return

        if isinstance(location, tuple):
            docname, lineno = location
            if docname:
                location = '%s:%s' % (self.env.doc2path(docname), lineno or '')
            else:
                location = None
        warntext = location and '%s: %s%s\n' % (location, prefix, message) or \
            '%s%s\n' % (prefix, message)
        if self.warningiserror:
            raise SphinxWarning(warntext)
        self._warncount += 1
        self._log(colorfunc(warntext), self._warning, True)

    def info(self, message='', nonl=False):
        # type: (unicode, bool) -> None
        """Emit an informational message.

        If *nonl* is true, don't emit a newline at the end (which implies that
        more info output will follow soon.)
        """
        self._log(message, self._status, nonl)

    def verbose(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a verbose informational message.

        The message will only be emitted for verbosity levels >= 1 (i.e. at
        least one ``-v`` option was given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 1:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(message, self._status)

    def debug(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a debug-level informational message.

        The message will only be emitted for verbosity levels >= 2 (i.e. at
        least two ``-v`` options were given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 2:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(darkgray(message), self._status)

    def debug2(self, message, *args, **kwargs):
        # type: (unicode, Any, Any) -> None
        """Emit a lowlevel debug-level informational message.

        The message will only be emitted for verbosity level 3 (i.e. three
        ``-v`` options were given).

        The message can contain %-style interpolation placeholders, which is
        formatted with either the ``*args`` or ``**kwargs`` when output.
        """
        if self.verbosity < 3:
            return
        if args or kwargs:
            message = message % (args or kwargs)
        self._log(lightgray(message), self._status)

    def _display_chunk(chunk):
        # type: (Any) -> unicode
        if isinstance(chunk, (list, tuple)):
            if len(chunk) == 1:
                return text_type(chunk[0])
            return '%s .. %s' % (chunk[0], chunk[-1])
        return text_type(chunk)

    def old_status_iterator(self, iterable, summary, colorfunc=darkgreen,
                            stringify_func=_display_chunk):
        # type: (Iterable, unicode, Callable, Callable) -> Iterator
        l = 0
        for item in iterable:
            if l == 0:
                self.info(bold(summary), nonl=True)
                l = 1
            self.info(colorfunc(stringify_func(item)) + ' ', nonl=True)
            yield item
        if l == 1:
            self.info()

    # new version with progress info
    def status_iterator(self, iterable, summary, colorfunc=darkgreen, length=0,
                        stringify_func=_display_chunk):
        # type: (Iterable, unicode, Callable, int, Callable) -> Iterable
        if length == 0:
            for item in self.old_status_iterator(iterable, summary, colorfunc,
                                                 stringify_func):
                yield item
            return
        l = 0
        summary = bold(summary)
        for item in iterable:
            l += 1
            s = '%s[%3d%%] %s' % (summary, 100*l/length,
                                  colorfunc(stringify_func(item)))
            if self.verbosity:
                s += '\n'
            else:
                s = term_width_line(s)
            self.info(s, nonl=True)
            yield item
        if l > 0:
            self.info()

    # ---- general extensibility interface -------------------------------------

    def setup_extension(self, extension):
        # type: (unicode) -> None
        """Import and setup a Sphinx extension module. No-op if called twice."""
        self.debug('[app] setting up extension: %r', extension)
        if extension in self._extensions:
            return
        if extension in EXTENSION_BLACKLIST:
            self.warn('the extension %r was already merged with Sphinx since version %s; '
                      'this extension is ignored.' % (
                          extension, EXTENSION_BLACKLIST[extension]))
            return
        self._setting_up_extension.append(extension)
        try:
            mod = __import__(extension, None, None, ['setup'])
        except ImportError as err:
            self.verbose('Original exception:\n' + traceback.format_exc())
            raise ExtensionError('Could not import extension %s' % extension,
                                 err)
        if not hasattr(mod, 'setup'):
            self.warn('extension %r has no setup() function; is it really '
                      'a Sphinx extension module?' % extension)
            ext_meta = None
        else:
            try:
                ext_meta = mod.setup(self)
            except VersionRequirementError as err:
                # add the extension name to the version required
                raise VersionRequirementError(
                    'The %s extension used by this project needs at least '
                    'Sphinx v%s; it therefore cannot be built with this '
                    'version.' % (extension, err))
        if ext_meta is None:
            ext_meta = {}
            # special-case for compatibility
            if extension == 'rst2pdf.pdfbuilder':
                ext_meta = {'parallel_read_safe': True}
        try:
            if not ext_meta.get('version'):
                ext_meta['version'] = 'unknown version'
        except Exception:
            self.warn('extension %r returned an unsupported object from '
                      'its setup() function; it should return None or a '
                      'metadata dictionary' % extension)
            ext_meta = {'version': 'unknown version'}
        self._extensions[extension] = mod
        self._extension_metadata[extension] = ext_meta
        self._setting_up_extension.pop()

    def require_sphinx(self, version):
        # type: (unicode) -> None
        # check the Sphinx version if requested
        if version > sphinx.__display_version__[:3]:
            raise VersionRequirementError(version)

    def import_object(self, objname, source=None):
        # type: (str, unicode) -> Any
        """Import an object from a 'module.name' string."""
        return import_object(objname, source=None)

    # event interface

    def _validate_event(self, event):
        # type: (unicode) -> None
        if event not in self._events:
            raise ExtensionError('Unknown event name: %s' % event)

    def connect(self, event, callback):
        # type: (unicode, Callable) -> int
        self._validate_event(event)
        listener_id = self.next_listener_id
        if event not in self._listeners:
            self._listeners[event] = {listener_id: callback}
        else:
            self._listeners[event][listener_id] = callback
        self.next_listener_id += 1
        self.debug('[app] connecting event %r: %r [id=%s]',
                   event, callback, listener_id)
        return listener_id

    def disconnect(self, listener_id):
        # type: (int) -> None
        self.debug('[app] disconnecting event: [id=%s]', listener_id)
        for event in itervalues(self._listeners):
            event.pop(listener_id, None)

    def emit(self, event, *args):
        # type: (unicode, Any) -> List
        try:
            self.debug2('[app] emitting event: %r%s', event, repr(args)[:100])
        except Exception:
            # not every object likes to be repr()'d (think
            # random stuff coming via autodoc)
            pass
        results = []
        if event in self._listeners:
            for _, callback in iteritems(self._listeners[event]):
                results.append(callback(self, *args))
        return results

    def emit_firstresult(self, event, *args):
        # type: (unicode, Any) -> Any
        for result in self.emit(event, *args):
            if result is not None:
                return result
        return None

    # registering addon parts

    def add_builder(self, builder):
        # type: (Type[Builder]) -> None
        self.debug('[app] adding builder: %r', builder)
        if not hasattr(builder, 'name'):
            raise ExtensionError('Builder class %s has no "name" attribute'
                                 % builder)
        if builder.name in self.builderclasses:
            raise ExtensionError(
                'Builder %r already exists (in module %s)' % (
                    builder.name, self.builderclasses[builder.name].__module__))
        self.builderclasses[builder.name] = builder

    def add_config_value(self, name, default, rebuild, types=()):
        # type: (unicode, Any, Union[bool, unicode], Any) -> None
        self.debug('[app] adding config value: %r',
                   (name, default, rebuild) + ((types,) if types else ()))  # type: ignore
        if name in self.config.values:
            raise ExtensionError('Config value %r already present' % name)
        if rebuild in (False, True):
            rebuild = rebuild and 'env' or ''
        self.config.values[name] = (default, rebuild, types)

    def add_event(self, name):
        # type: (unicode) -> None
        self.debug('[app] adding event: %r', name)
        if name in self._events:
            raise ExtensionError('Event %r already present' % name)
        self._events[name] = ''

    def set_translator(self, name, translator_class):
        # type: (unicode, Any) -> None
        self.info(bold('A Translator for the %s builder is changed.' % name))
        self._translators[name] = translator_class

    def add_node(self, node, **kwds):
        # type: (nodes.Node, Any) -> None
        self.debug('[app] adding node: %r', (node, kwds))
        if not kwds.pop('override', False) and \
           hasattr(nodes.GenericNodeVisitor, 'visit_' + node.__name__):
            self.warn('while setting up extension %s: node class %r is '
                      'already registered, its visitors will be overridden' %
                      (self._setting_up_extension, node.__name__),
                      type='app', subtype='add_node')
        nodes._add_node_class_names([node.__name__])
        for key, val in iteritems(kwds):
            try:
                visit, depart = val
            except ValueError:
                raise ExtensionError('Value for key %r must be a '
                                     '(visit, depart) function tuple' % key)
            translator = self._translators.get(key)
            if translator is not None:
                pass
            elif key == 'html':
                from sphinx.writers.html import HTMLTranslator as translator  # type: ignore
            elif key == 'latex':
                from sphinx.writers.latex import LaTeXTranslator as translator  # type: ignore
            elif key == 'text':
                from sphinx.writers.text import TextTranslator as translator  # type: ignore
            elif key == 'man':
                from sphinx.writers.manpage import ManualPageTranslator as translator  # type: ignore  # NOQA
            elif key == 'texinfo':
                from sphinx.writers.texinfo import TexinfoTranslator as translator  # type: ignore  # NOQA
            else:
                # ignore invalid keys for compatibility
                continue
            setattr(translator, 'visit_'+node.__name__, visit)
            if depart:
                setattr(translator, 'depart_'+node.__name__, depart)

    def add_enumerable_node(self, node, figtype, title_getter=None, **kwds):
        # type: (nodes.Node, unicode, Callable, Any) -> None
        self.enumerable_nodes[node] = (figtype, title_getter)
        self.add_node(node, **kwds)

    def _directive_helper(self, obj, content=None, arguments=None, **options):
        # type: (Any, unicode, Any, Any) -> Any
        if isinstance(obj, (types.FunctionType, types.MethodType)):
            obj.content = content                       # type: ignore
            obj.arguments = arguments or (0, 0, False)  # type: ignore
            obj.options = options                       # type: ignore
            return convert_directive_function(obj)
        else:
            if content or arguments or options:
                raise ExtensionError('when adding directive classes, no '
                                     'additional arguments may be given')
            return obj

    def add_directive(self, name, obj, content=None, arguments=None, **options):
        # type: (unicode, Any, unicode, Any, Any) -> None
        self.debug('[app] adding directive: %r',
                   (name, obj, content, arguments, options))
        if name in directives._directives:
            self.warn('while setting up extension %s: directive %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app', subtype='add_directive')
        directives.register_directive(
            name, self._directive_helper(obj, content, arguments, **options))

    def add_role(self, name, role):
        # type: (unicode, Any) -> None
        self.debug('[app] adding role: %r', (name, role))
        if name in roles._roles:
            self.warn('while setting up extension %s: role %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app', subtype='add_role')
        roles.register_local_role(name, role)

    def add_generic_role(self, name, nodeclass):
        # type: (unicode, Any) -> None
        # don't use roles.register_generic_role because it uses
        # register_canonical_role
        self.debug('[app] adding generic role: %r', (name, nodeclass))
        if name in roles._roles:
            self.warn('while setting up extension %s: role %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], name),
                      type='app', subtype='add_generic_role')
        role = roles.GenericRole(name, nodeclass)
        roles.register_local_role(name, role)

    def add_domain(self, domain):
        # type: (Type[Domain]) -> None
        self.debug('[app] adding domain: %r', domain)
        if domain.name in self.domains:
            raise ExtensionError('domain %s already registered' % domain.name)
        self.domains[domain.name] = domain

    def override_domain(self, domain):
        # type: (Type[Domain]) -> None
        self.debug('[app] overriding domain: %r', domain)
        if domain.name not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain.name)
        if not issubclass(domain, self.domains[domain.name]):
            raise ExtensionError('new domain not a subclass of registered %s '
                                 'domain' % domain.name)
        self.domains[domain.name] = domain

    def add_directive_to_domain(self, domain, name, obj,
                                content=None, arguments=None, **options):
        # type: (unicode, unicode, Any, unicode, Any, Any) -> None
        self.debug('[app] adding directive to domain: %r',
                   (domain, name, obj, content, arguments, options))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].directives[name] = \
            self._directive_helper(obj, content, arguments, **options)

    def add_role_to_domain(self, domain, name, role):
        # type: (unicode, unicode, Any) -> None
        self.debug('[app] adding role to domain: %r', (domain, name, role))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].roles[name] = role

    def add_index_to_domain(self, domain, index):
        # type: (unicode, unicode) -> None
        self.debug('[app] adding index to domain: %r', (domain, index))
        if domain not in self.domains:
            raise ExtensionError('domain %s not yet registered' % domain)
        self.domains[domain].indices.append(index)

    def add_object_type(self, directivename, rolename, indextemplate='',
                        parse_node=None, ref_nodeclass=None, objname='',
                        doc_field_types=[]):
        # type: (unicode, unicode, unicode, Callable, nodes.Node, unicode, List) -> None
        self.debug('[app] adding object type: %r',
                   (directivename, rolename, indextemplate, parse_node,
                    ref_nodeclass, objname, doc_field_types))
        StandardDomain.object_types[directivename] = \
            ObjType(objname or directivename, rolename)
        # create a subclass of GenericObject as the new directive
        new_directive = type(directivename, (GenericObject, object),  # type: ignore
                             {'indextemplate': indextemplate,
                              'parse_node': staticmethod(parse_node),  # type: ignore
                              'doc_field_types': doc_field_types})
        StandardDomain.directives[directivename] = new_directive
        # XXX support more options?
        StandardDomain.roles[rolename] = XRefRole(innernodeclass=ref_nodeclass)

    # backwards compatible alias
    add_description_unit = add_object_type

    def add_crossref_type(self, directivename, rolename, indextemplate='',
                          ref_nodeclass=None, objname=''):
        # type: (unicode, unicode, unicode, nodes.Node, unicode) -> None
        self.debug('[app] adding crossref type: %r',
                   (directivename, rolename, indextemplate, ref_nodeclass,
                    objname))
        StandardDomain.object_types[directivename] = \
            ObjType(objname or directivename, rolename)
        # create a subclass of Target as the new directive
        new_directive = type(directivename, (Target, object),  # type: ignore
                             {'indextemplate': indextemplate})
        StandardDomain.directives[directivename] = new_directive
        # XXX support more options?
        StandardDomain.roles[rolename] = XRefRole(innernodeclass=ref_nodeclass)

    def add_transform(self, transform):
        # type: (Transform) -> None
        self.debug('[app] adding transform: %r', transform)
        SphinxStandaloneReader.transforms.append(transform)

    def add_javascript(self, filename):
        # type: (unicode) -> None
        self.debug('[app] adding javascript: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.script_files.append(filename)
        else:
            StandaloneHTMLBuilder.script_files.append(
                posixpath.join('_static', filename))

    def add_stylesheet(self, filename):
        # type: (unicode) -> None
        self.debug('[app] adding stylesheet: %r', filename)
        from sphinx.builders.html import StandaloneHTMLBuilder
        if '://' in filename:
            StandaloneHTMLBuilder.css_files.append(filename)
        else:
            StandaloneHTMLBuilder.css_files.append(
                posixpath.join('_static', filename))

    def add_latex_package(self, packagename, options=None):
        # type: (unicode, unicode) -> None
        self.debug('[app] adding latex package: %r', packagename)
        self.builder.usepackages.append((packagename, options))

    def add_lexer(self, alias, lexer):
        # type: (unicode, Any) -> None
        self.debug('[app] adding lexer: %r', (alias, lexer))
        from sphinx.highlighting import lexers
        if lexers is None:
            return
        lexers[alias] = lexer

    def add_autodocumenter(self, cls):
        # type: (Any) -> None
        self.debug('[app] adding autodocumenter: %r', cls)
        from sphinx.ext import autodoc
        autodoc.add_documenter(cls)
        self.add_directive('auto' + cls.objtype, autodoc.AutoDirective)

    def add_autodoc_attrgetter(self, type, getter):
        # type: (Any, Callable) -> None
        self.debug('[app] adding autodoc attrgetter: %r', (type, getter))
        from sphinx.ext import autodoc
        autodoc.AutoDirective._special_attrgetters[type] = getter

    def add_search_language(self, cls):
        # type: (Any) -> None
        self.debug('[app] adding search language: %r', cls)
        from sphinx.search import languages, SearchLanguage
        assert issubclass(cls, SearchLanguage)
        languages[cls.lang] = cls

    def add_source_parser(self, suffix, parser):
        # type: (unicode, Parser) -> None
        self.debug('[app] adding search source_parser: %r, %r', suffix, parser)
        if suffix in self._additional_source_parsers:
            self.warn('while setting up extension %s: source_parser for %r is '
                      'already registered, it will be overridden' %
                      (self._setting_up_extension[-1], suffix),
                      type='app', subtype='add_source_parser')
        self._additional_source_parsers[suffix] = parser
def missing_reference(app: Sphinx, env: BuildEnvironment, node: Element,
                      contnode: TextElement) -> Optional[nodes.reference]:
    """Linking to Qt documentation."""
    target: str = node["reftarget"]
    inventories = InventoryAdapter(env)
    objtypes: Optional[List[str]] = None
    if node["reftype"] == "any":
        # we search anything!
        objtypes = [
            "%s:%s" % (domain.name, objtype)
            for domain in env.domains.values()
            for objtype in domain.object_types
        ]
        domain = None
    else:
        domain = node.get("refdomain")
        if not domain:
            # only objects in domains are in the inventory
            return None
        objtypes = env.get_domain(domain).objtypes_for_role(node["reftype"])
        if not objtypes:
            return None
        objtypes = ["%s:%s" % (domain, objtype) for objtype in objtypes]
    if target.startswith("PySide2"):
        head, tail = target.split(".", 1)
        target = "PyQt5." + tail
    if signal_pattern.match(target):
        uri = signal_slot_uri[app.config.qt_documentation]
        dispname = signal_name[app.config.qt_documentation]
        version = QT_VERSION
    elif slot_pattern.match(target):
        uri = signal_slot_uri[app.config.qt_documentation]
        dispname = slot_name[app.config.qt_documentation]
        version = QT_VERSION
    else:
        target_list = [target, "PyQt5." + target]
        target_list += [
            name + "." + target for name in
            inventories.named_inventory["PyQt5"]["sip:module"].keys()
        ]
        if node.get("reftype") in type_translate_dict:
            type_names = type_translate_dict[node.get("reftype")]
        else:
            type_names = [node.get("reftype")]
        for name in type_names:
            obj_type_name = "sip:{}".format(name)
            if obj_type_name not in inventories.named_inventory["PyQt5"]:
                return None
            for target_name in target_list:
                if target_name in inventories.main_inventory[obj_type_name]:
                    proj, version, uri, dispname = inventories.named_inventory[
                        "PyQt5"][obj_type_name][target_name]
                    uri = uri.replace("##", "#")
                    #  print(node)  # print nodes with unresolved references
                    break
            else:
                continue
            break
        else:
            return None
        if app.config.qt_documentation == "Qt5":
            html_name = uri.split("/")[-1]
            uri = "https://doc.qt.io/qt-5/" + html_name
        elif app.config.qt_documentation == "PySide2":
            if node.get("reftype") == "meth":
                split_tup = target_name.split(".")[1:]
                ref_name = ".".join(["PySide2", split_tup[0], "PySide2"] +
                                    split_tup)
                html_name = "/".join(split_tup[:-1]) + ".html#" + ref_name
            else:
                html_name = "/".join(target_name.split(".")[1:]) + ".html"
            uri = "https://doc.qt.io/qtforpython/PySide2/" + html_name

    # remove this line if you would like straight to pyqt documentation
    if version:
        reftitle = _("(in %s v%s)") % (app.config.qt_documentation, version)
    else:
        reftitle = _("(in %s)") % (app.config.qt_documentation, )
    newnode = nodes.reference("",
                              "",
                              internal=False,
                              refuri=uri,
                              reftitle=reftitle)
    if node.get("refexplicit"):
        # use whatever title was given
        newnode.append(contnode)
    else:
        # else use the given display name (used for :ref:)
        newnode.append(contnode.__class__(dispname, dispname))
    return newnode