"""
sphinx.config
~~~~~~~~~~~~~
Build configuration file handling.
:copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
import traceback
import types
import warnings
from collections import OrderedDict
from os import path, getenv
from typing import Any, NamedTuple, Union
from sphinx.deprecation import RemovedInSphinx30Warning, RemovedInSphinx40Warning
from sphinx.errors import ConfigError, ExtensionError
from sphinx.locale import _, __
from sphinx.util import logging
from sphinx.util.i18n import format_date
from sphinx.util.osutil import cd
from sphinx.util.pycompat import execfile_
from sphinx.util.typing import NoneType
if False:
# For type annotation
from typing import Callable, Dict, Generator, Iterator, List, Set, Tuple # NOQA
from sphinx.application import Sphinx # NOQA
from sphinx.environment import BuildEnvironment # NOQA
from sphinx.util.tags import Tags # NOQA
logger = logging.getLogger(__name__)
CONFIG_FILENAME = 'conf.py'
UNSERIALIZABLE_TYPES = (type, types.ModuleType, types.FunctionType)
copyright_year_re = re.compile(r'^((\d{4}-)?)(\d{4})(?=[ ,])')
ConfigValue = NamedTuple('ConfigValue', [('name', str),
('value', Any),
('rebuild', Union[bool, str])])
def is_serializable(obj):
# type: (Any) -> bool
"""Check if object is serializable or not."""
if isinstance(obj, UNSERIALIZABLE_TYPES):
return False
elif isinstance(obj, dict):
for key, value in obj.items():
if not is_serializable(key) or not is_serializable(value):
return False
elif isinstance(obj, (list, tuple, set)):
return all(is_serializable(i) for i in obj)
return True
class ENUM:
"""represents the config value should be a one of candidates.
Example:
app.add_config_value('latex_show_urls', 'no', None, ENUM('no', 'footnote', 'inline'))
"""
def __init__(self, *candidates):
# type: (str) -> None
self.candidates = candidates
def match(self, value):
# type: (Union[str, List, Tuple]) -> bool
if isinstance(value, (list, tuple)):
return all(item in self.candidates for item in value)
else:
return value in self.candidates
# RemovedInSphinx40Warning
string_classes = [str] # type: List
[文档]class Config:
"""Configuration file abstraction.
The config object makes the values of all config values available as
attributes.
It is exposed via the :py:attr:`sphinx.application.Application.config` and
:py:attr:`sphinx.environment.Environment.config` attributes. For example,
to get the value of :confval:`language`, use either ``app.config.language``
or ``env.config.language``.
"""
# the values are: (default, what needs to be rebuilt if changed)
# If you add a value here, don't forget to include it in the
# quickstart.py file template as well as in the docs!
config_values = {
# general options
'project': ('Python', 'env', []),
'author': ('unknown', 'env', []),
'copyright': ('', 'html', []),
'version': ('', 'env', []),
'release': ('', 'env', []),
'today': ('', 'env', []),
# the real default is locale-dependent
'today_fmt': (None, 'env', [str]),
'language': (None, 'env', [str]),
'locale_dirs': (['locales'], 'env', []),
'figure_language_filename': ('{root}.{language}{ext}', 'env', [str]),
'master_doc': ('index', 'env', []),
'source_suffix': ({'.rst': 'restructuredtext'}, 'env', Any),
'source_encoding': ('utf-8-sig', 'env', []),
'source_parsers': ({}, 'env', []),
'exclude_patterns': ([], 'env', []),
'default_role': (None, 'env', [str]),
'add_function_parentheses': (True, 'env', []),
'add_module_names': (True, 'env', []),
'trim_footnote_reference_space': (False, 'env', []),
'show_authors': (False, 'env', []),
'pygments_style': (None, 'html', [str]),
'highlight_language': ('default', 'env', []),
'highlight_options': ({}, 'env', []),
'templates_path': ([], 'html', []),
'template_bridge': (None, 'html', [str]),
'keep_warnings': (False, 'env', []),
'suppress_warnings': ([], 'env', []),
'modindex_common_prefix': ([], 'html', []),
'rst_epilog': (None, 'env', [str]),
'rst_prolog': (None, 'env', [str]),
'trim_doctest_flags': (True, 'env', []),
'primary_domain': ('py', 'env', [NoneType]), # type: ignore
'needs_sphinx': (None, None, [str]),
'needs_extensions': ({}, None, []),
'manpages_url': (None, 'env', []),
'nitpicky': (False, None, []),
'nitpick_ignore': ([], None, []),
'numfig': (False, 'env', []),
'numfig_secnum_depth': (1, 'env', []),
'numfig_format': ({}, 'env', []), # will be initialized in init_numfig_format()
'math_number_all': (False, 'env', []),
'math_eqref_format': (None, 'env', [str]),
'math_numfig': (True, 'env', []),
'tls_verify': (True, 'env', []),
'tls_cacerts': (None, 'env', []),
'smartquotes': (True, 'env', []),
'smartquotes_action': ('qDe', 'env', []),
'smartquotes_excludes': ({'languages': ['ja'],
'builders': ['man', 'text']},
'env', []),
} # type: Dict[str, Tuple]
def __init__(self, *args):
# type: (Any) -> None
if len(args) == 4:
# old style arguments: (dirname, filename, overrides, tags)
warnings.warn('The argument of Config() class has been changed. '
'Use Config.read() to read configuration from conf.py.',
RemovedInSphinx30Warning, stacklevel=2)
dirname, filename, overrides, tags = args
if dirname is None:
config = {} # type: Dict[str, Any]
else:
config = eval_config_file(path.join(dirname, filename), tags)
else:
# new style arguments: (config={}, overrides={})
if len(args) == 0:
config, overrides = {}, {}
elif len(args) == 1:
config, overrides = args[0], {}
else:
config, overrides = args[:2]
self.overrides = overrides
self.values = Config.config_values.copy()
self._raw_config = config
self.setup = config.get('setup', None) # type: Callable
if 'extensions' in overrides:
if isinstance(overrides['extensions'], str):
config['extensions'] = overrides.pop('extensions').split(',')
else:
config['extensions'] = overrides.pop('extensions')
self.extensions = config.get('extensions', []) # type: List[str]
@classmethod
def read(cls, confdir, overrides=None, tags=None):
# type: (str, Dict, Tags) -> Config
"""Create a Config object from configuration file."""
filename = path.join(confdir, CONFIG_FILENAME)
namespace = eval_config_file(filename, tags)
return cls(namespace, overrides or {})
def check_types(self):
# type: () -> None
warnings.warn('Config.check_types() is deprecated. Use check_confval_types() instead.',
RemovedInSphinx30Warning, stacklevel=2)
check_confval_types(None, self)
def check_unicode(self):
# type: () -> None
warnings.warn('Config.check_unicode() is deprecated. Use check_unicode() instead.',
RemovedInSphinx30Warning, stacklevel=2)
check_unicode(self)
def convert_overrides(self, name, value):
# type: (str, Any) -> Any
if not isinstance(value, str):
return value
else:
defvalue = self.values[name][0]
if self.values[name][2] == Any:
return value
elif isinstance(defvalue, dict):
raise ValueError(__('cannot override dictionary config setting %r, '
'ignoring (use %r to set individual elements)') %
(name, name + '.key=value'))
elif isinstance(defvalue, list):
return value.split(',')
elif isinstance(defvalue, int):
try:
return int(value)
except ValueError:
raise ValueError(__('invalid number %r for config value %r, ignoring') %
(value, name))
elif hasattr(defvalue, '__call__'):
return value
elif defvalue is not None and not isinstance(defvalue, str):
raise ValueError(__('cannot override config setting %r with unsupported '
'type, ignoring') % name)
else:
return value
def pre_init_values(self):
# type: () -> None
"""
Initialize some limited config variables before initialize i18n and loading extensions
"""
variables = ['needs_sphinx', 'suppress_warnings', 'language', 'locale_dirs']
for name in variables:
try:
if name in self.overrides:
self.__dict__[name] = self.convert_overrides(name, self.overrides[name])
elif name in self._raw_config:
self.__dict__[name] = self._raw_config[name]
except ValueError as exc:
logger.warning("%s", exc)
def init_values(self):
# type: () -> None
config = self._raw_config
for valname, value in self.overrides.items():
try:
if '.' in valname:
realvalname, key = valname.split('.', 1)
config.setdefault(realvalname, {})[key] = value
continue
elif valname not in self.values:
logger.warning(__('unknown config value %r in override, ignoring'),
valname)
continue
if isinstance(value, str):
config[valname] = self.convert_overrides(valname, value)
else:
config[valname] = value
except ValueError as exc:
logger.warning("%s", exc)
for name in config:
if name in self.values:
self.__dict__[name] = config[name]
def __getattr__(self, name):
# type: (str) -> Any
if name.startswith('_'):
raise AttributeError(name)
if name not in self.values:
raise AttributeError(__('No such config value: %s') % name)
default = self.values[name][0]
if hasattr(default, '__call__'):
return default(self)
return default
def __getitem__(self, name):
# type: (str) -> str
return getattr(self, name)
def __setitem__(self, name, value):
# type: (str, Any) -> None
setattr(self, name, value)
def __delitem__(self, name):
# type: (str) -> None
delattr(self, name)
def __contains__(self, name):
# type: (str) -> bool
return name in self.values
def __iter__(self):
# type: () -> Generator[ConfigValue, None, None]
for name, value in self.values.items():
yield ConfigValue(name, getattr(self, name), value[1])
def add(self, name, default, rebuild, types):
# type: (str, Any, Union[bool, str], Any) -> None
if name in self.values:
raise ExtensionError(__('Config value %r already present') % name)
else:
self.values[name] = (default, rebuild, types)
def filter(self, rebuild):
# type: (Union[str, List[str]]) -> Iterator[ConfigValue]
if isinstance(rebuild, str):
rebuild = [rebuild]
return (value for value in self if value.rebuild in rebuild)
def __getstate__(self):
# type: () -> Dict
"""Obtains serializable data for pickling."""
# remove potentially pickling-problematic values from config
__dict__ = {}
for key, value in self.__dict__.items():
if key.startswith('_') or not is_serializable(value):
pass
else:
__dict__[key] = value
# create a picklable copy of values list
__dict__['values'] = {}
for key, value in self.values.items():
real_value = getattr(self, key)
if not is_serializable(real_value):
# omit unserializable value
real_value = None
# types column is also omitted
__dict__['values'][key] = (real_value, value[1], None)
return __dict__
def __setstate__(self, state):
# type: (Dict) -> None
self.__dict__.update(state)
def eval_config_file(filename, tags):
# type: (str, Tags) -> Dict[str, Any]
"""Evaluate a config file."""
namespace = {} # type: Dict[str, Any]
namespace['__file__'] = filename
namespace['tags'] = tags
with cd(path.dirname(filename)):
# during executing config file, current dir is changed to ``confdir``.
try:
execfile_(filename, namespace)
except SyntaxError as err:
msg = __("There is a syntax error in your configuration file: %s\n")
raise ConfigError(msg % err)
except SystemExit:
msg = __("The configuration file (or one of the modules it imports) "
"called sys.exit()")
raise ConfigError(msg)
except Exception:
msg = __("There is a programmable error in your configuration file:\n\n%s")
raise ConfigError(msg % traceback.format_exc())
return namespace
def convert_source_suffix(app, config):
# type: (Sphinx, Config) -> None
"""This converts old styled source_suffix to new styled one.
* old style: str or list
* new style: a dict which maps from fileext to filetype
"""
source_suffix = config.source_suffix
if isinstance(source_suffix, str):
# if str, considers as default filetype (None)
#
# The default filetype is determined on later step.
# By default, it is considered as restructuredtext.
config.source_suffix = OrderedDict({source_suffix: None}) # type: ignore
elif isinstance(source_suffix, (list, tuple)):
# if list, considers as all of them are default filetype
config.source_suffix = OrderedDict([(s, None) for s in source_suffix]) # type: ignore # NOQA
elif isinstance(source_suffix, dict):
# if dict, convert it to OrderedDict
config.source_suffix = OrderedDict(config.source_suffix) # type: ignore
else:
logger.warning(__("The config value `source_suffix' expects "
"a string, list of strings, or dictionary. "
"But `%r' is given." % source_suffix))
def init_numfig_format(app, config):
# type: (Sphinx, Config) -> None
"""Initialize :confval:`numfig_format`."""
numfig_format = {'section': _('Section %s'),
'figure': _('Fig. %s'),
'table': _('Table %s'),
'code-block': _('Listing %s')}
# override default labels by configuration
numfig_format.update(config.numfig_format)
config.numfig_format = numfig_format # type: ignore
def correct_copyright_year(app, config):
# type: (Sphinx, Config) -> None
"""correct values of copyright year that are not coherent with
the SOURCE_DATE_EPOCH environment variable (if set)
See https://reproducible-builds.org/specs/source-date-epoch/
"""
if getenv('SOURCE_DATE_EPOCH') is not None:
for k in ('copyright', 'epub_copyright'):
if k in config:
replace = r'\g<1>%s' % format_date('%Y')
config[k] = copyright_year_re.sub(replace, config[k])
def check_confval_types(app, config):
# type: (Sphinx, Config) -> None
"""check all values for deviation from the default value's type, since
that can result in TypeErrors all over the place NB.
"""
for confval in config:
default, rebuild, annotations = config.values[confval.name]
if hasattr(default, '__call__'):
default = default(config) # evaluate default value
if default is None and not annotations:
continue # neither inferrable nor expliclitly annotated types
if annotations is Any:
# any type of value is accepted
pass
elif isinstance(annotations, ENUM):
if not annotations.match(confval.value):
msg = __("The config value `{name}` has to be a one of {candidates}, "
"but `{current}` is given.")
logger.warning(msg.format(name=confval.name,
current=confval.value,
candidates=annotations.candidates))
else:
if type(confval.value) is type(default):
continue
if type(confval.value) in annotations:
continue
common_bases = (set(type(confval.value).__bases__ + (type(confval.value),)) &
set(type(default).__bases__))
common_bases.discard(object)
if common_bases:
continue # at least we share a non-trivial base class
if annotations:
msg = __("The config value `{name}' has type `{current.__name__}'; "
"expected {permitted}.")
wrapped_annotations = ["`{}'".format(c.__name__) for c in annotations]
if len(wrapped_annotations) > 2:
permitted = "{}, or {}".format(
", ".join(wrapped_annotations[:-1]),
wrapped_annotations[-1])
else:
permitted = " or ".join(wrapped_annotations)
logger.warning(msg.format(name=confval.name,
current=type(confval.value),
permitted=permitted))
else:
msg = __("The config value `{name}' has type `{current.__name__}', "
"defaults to `{default.__name__}'.")
logger.warning(msg.format(name=confval.name,
current=type(confval.value),
default=type(default)))
def check_unicode(config):
# type: (Config) -> None
"""check all string values for non-ASCII characters in bytestrings,
since that can result in UnicodeErrors all over the place
"""
warnings.warn('sphinx.config.check_unicode() is deprecated.',
RemovedInSphinx40Warning)
nonascii_re = re.compile(br'[\x80-\xff]')
for name, value in config._raw_config.items():
if isinstance(value, bytes) and nonascii_re.search(value):
logger.warning(__('the config value %r is set to a string with non-ASCII '
'characters; this can lead to Unicode errors occurring. '
'Please use Unicode strings, e.g. %r.'), name, 'Content')
def check_primary_domain(app, config):
# type: (Sphinx, Config) -> None
primary_domain = config.primary_domain
if primary_domain and not app.registry.has_domain(primary_domain):
logger.warning(__('primary_domain %r not found, ignored.'), primary_domain)
config.primary_domain = None # type: ignore
def check_master_doc(app, env, added, changed, removed):
# type: (Sphinx, BuildEnvironment, Set[str], Set[str], Set[str]) -> Set[str]
"""Adjust master_doc to 'contents' to support an old project which does not have
no master_doc setting.
"""
if (app.config.master_doc == 'index' and
'index' not in app.project.docnames and
'contents' in app.project.docnames):
logger.warning(__('Since v2.0, Sphinx uses "index" as master_doc by default. '
'Please add "master_doc = \'contents\'" to your conf.py.'))
app.config.master_doc = "contents" # type: ignore
return changed
def setup(app):
# type: (Sphinx) -> Dict[str, Any]
app.connect('config-inited', convert_source_suffix)
app.connect('config-inited', init_numfig_format)
app.connect('config-inited', correct_copyright_year)
app.connect('config-inited', check_confval_types)
app.connect('config-inited', check_primary_domain)
app.connect('env-get-outdated', check_master_doc)
return {
'version': 'builtin',
'parallel_read_safe': True,
'parallel_write_safe': True,
}
