"""
sphinx.environment
~~~~~~~~~~~~~~~~~~
Global creation environment.
:copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import os
import pickle
import warnings
from collections import defaultdict
from copy import copy
from io import BytesIO
from os import path
from sphinx import addnodes
from sphinx.deprecation import (
RemovedInSphinx30Warning, RemovedInSphinx40Warning, deprecated_alias
)
from sphinx.environment.adapters.toctree import TocTree
from sphinx.errors import SphinxError, BuildEnvironmentError, DocumentError, ExtensionError
from sphinx.locale import __
from sphinx.transforms import SphinxTransformer
from sphinx.util import DownloadFiles, FilenameUniqDict
from sphinx.util import logging
from sphinx.util.docutils import LoggingReporter
from sphinx.util.i18n import CatalogRepository, docname_to_domain
from sphinx.util.nodes import is_translatable
if False:
# For type annotation
from typing import Any, Callable, Dict, IO, Iterator, List, Optional, Set, Tuple, Union # NOQA
from docutils import nodes # NOQA
from sphinx.application import Sphinx # NOQA
from sphinx.builders import Builder # NOQA
from sphinx.config import Config # NOQA
from sphinx.domains import Domain # NOQA
from sphinx.project import Project # NOQA
logger = logging.getLogger(__name__)
default_settings = {
'embed_stylesheet': False,
'cloak_email_addresses': True,
'pep_base_url': 'https://www.python.org/dev/peps/',
'pep_references': None,
'rfc_base_url': 'https://tools.ietf.org/html/',
'rfc_references': None,
'input_encoding': 'utf-8-sig',
'doctitle_xform': False,
'sectsubtitle_xform': False,
'halt_level': 5,
'file_insertion_enabled': True,
'smartquotes_locales': [],
} # type: Dict[str, Any]
# This is increased every time an environment attribute is added
# or changed to properly invalidate pickle files.
ENV_VERSION = 56
# config status
CONFIG_OK = 1
CONFIG_NEW = 2
CONFIG_CHANGED = 3
CONFIG_EXTENSIONS_CHANGED = 4
CONFIG_CHANGED_REASON = {
CONFIG_NEW: __('new config'),
CONFIG_CHANGED: __('config changed'),
CONFIG_EXTENSIONS_CHANGED: __('extensions changed'),
}
versioning_conditions = {
'none': False,
'text': is_translatable,
} # type: Dict[str, Union[bool, Callable]]
[文档]class BuildEnvironment:
"""
The environment in which the ReST files are translated.
Stores an inventory of cross-file targets and provides doctree
transformations to resolve links to them.
"""
domains = None # type: Dict[str, Domain]
# --------- ENVIRONMENT INITIALIZATION -------------------------------------
def __init__(self, app=None):
# type: (Sphinx) -> None
self.app = None # type: Sphinx
self.doctreedir = None # type: str
self.srcdir = None # type: str
self.config = None # type: Config
self.config_status = None # type: int
self.project = None # type: Project
self.version = None # type: Dict[str, str]
# the method of doctree versioning; see set_versioning_method
self.versioning_condition = None # type: Union[bool, Callable]
self.versioning_compare = None # type: bool
# all the registered domains, set by the application
self.domains = {}
# the docutils settings for building
self.settings = default_settings.copy()
self.settings['env'] = self
# All "docnames" here are /-separated and relative and exclude
# the source suffix.
self.all_docs = {} # type: Dict[str, float]
# docname -> mtime at the time of reading
# contains all read docnames
self.dependencies = defaultdict(set) # type: Dict[str, Set[str]]
# docname -> set of dependent file
# names, relative to documentation root
self.included = defaultdict(set) # type: Dict[str, Set[str]]
# docname -> set of included file
# docnames included from other documents
self.reread_always = set() # type: Set[str]
# docnames to re-read unconditionally on
# next build
# File metadata
self.metadata = defaultdict(dict) # type: Dict[str, Dict[str, Any]]
# docname -> dict of metadata items
# TOC inventory
self.titles = {} # type: Dict[str, nodes.title]
# docname -> title node
self.longtitles = {} # type: Dict[str, nodes.title]
# docname -> title node; only different if
# set differently with title directive
self.tocs = {} # type: Dict[str, nodes.bullet_list]
# docname -> table of contents nodetree
self.toc_num_entries = {} # type: Dict[str, int]
# docname -> number of real entries
# used to determine when to show the TOC
# in a sidebar (don't show if it's only one item)
self.toc_secnumbers = {} # type: Dict[str, Dict[str, Tuple[int, ...]]]
# docname -> dict of sectionid -> number
self.toc_fignumbers = {} # type: Dict[str, Dict[str, Dict[str, Tuple[int, ...]]]]
# docname -> dict of figtype ->
# dict of figureid -> number
self.toctree_includes = {} # type: Dict[str, List[str]]
# docname -> list of toctree includefiles
self.files_to_rebuild = {} # type: Dict[str, Set[str]]
# docname -> set of files
# (containing its TOCs) to rebuild too
self.glob_toctrees = set() # type: Set[str]
# docnames that have :glob: toctrees
self.numbered_toctrees = set() # type: Set[str]
# docnames that have :numbered: toctrees
# domain-specific inventories, here to be pickled
self.domaindata = {} # type: Dict[str, Dict]
# domainname -> domain-specific dict
# Other inventories
self.indexentries = {} # type: Dict[str, List[Tuple[str, str, str, str, str]]]
# docname -> list of
# (type, str, target, aliasname)
# these map absolute path -> (docnames, unique filename)
self.images = FilenameUniqDict() # type: FilenameUniqDict
self.dlfiles = DownloadFiles() # type: DownloadFiles
# filename -> (set of docnames, destination)
# the original URI for images
self.original_image_uri = {} # type: Dict[str, str]
# temporary data storage while reading a document
self.temp_data = {} # type: Dict[str, Any]
# context for cross-references (e.g. current module or class)
# this is similar to temp_data, but will for example be copied to
# attributes of "any" cross references
self.ref_context = {} # type: Dict[str, Any]
# set up environment
if app:
self.setup(app)
def __getstate__(self):
# type: () -> Dict
"""Obtains serializable data for pickling."""
__dict__ = self.__dict__.copy()
__dict__.update(app=None, domains={}) # clear unpickable attributes
return __dict__
def __setstate__(self, state):
# type: (Dict) -> None
self.__dict__.update(state)
def setup(self, app):
# type: (Sphinx) -> None
"""Set up BuildEnvironment object."""
if self.version and self.version != app.registry.get_envversion(app):
raise BuildEnvironmentError(__('build environment version not current'))
elif self.srcdir and self.srcdir != app.srcdir:
raise BuildEnvironmentError(__('source directory has changed'))
if self.project:
app.project.restore(self.project)
self.app = app
self.doctreedir = app.doctreedir
self.srcdir = app.srcdir
self.project = app.project
self.version = app.registry.get_envversion(app)
# initialize domains
self.domains = {}
for domain in app.registry.create_domains(self):
self.domains[domain.name] = domain
# initialize config
self._update_config(app.config)
# initialie settings
self._update_settings(app.config)
def _update_config(self, config):
# type: (Config) -> None
"""Update configurations by new one."""
self.config_status = CONFIG_OK
if self.config is None:
self.config_status = CONFIG_NEW
else:
# check if a config value was changed that affects how
# doctrees are read
for item in config.filter('env'):
if self.config[item.name] != item.value:
self.config_status = CONFIG_CHANGED
break
# this value is not covered by the above loop because it is handled
# specially by the config class
if self.config.extensions != config.extensions:
self.config_status = CONFIG_EXTENSIONS_CHANGED
self.config = config
def _update_settings(self, config):
# type: (Config) -> None
"""Update settings by new config."""
self.settings['input_encoding'] = config.source_encoding
self.settings['trim_footnote_reference_space'] = config.trim_footnote_reference_space
self.settings['language_code'] = config.language or 'en'
# Allow to disable by 3rd party extension (workaround)
self.settings.setdefault('smart_quotes', True)
def set_versioning_method(self, method, compare):
# type: (Union[str, Callable], bool) -> None
"""This sets the doctree versioning method for this environment.
Versioning methods are a builder property; only builders with the same
versioning method can share the same doctree directory. Therefore, we
raise an exception if the user tries to use an environment with an
incompatible versioning method.
"""
condition = None # type: Union[bool, Callable]
if callable(method):
condition = method
else:
if method not in versioning_conditions:
raise ValueError('invalid versioning method: %r' % method)
condition = versioning_conditions[method]
if self.versioning_condition not in (None, condition):
raise SphinxError(__('This environment is incompatible with the '
'selected builder, please choose another '
'doctree directory.'))
self.versioning_condition = condition
self.versioning_compare = compare
def clear_doc(self, docname):
# type: (str) -> None
"""Remove all traces of a source file in the inventory."""
if docname in self.all_docs:
self.all_docs.pop(docname, None)
self.included.pop(docname, None)
self.reread_always.discard(docname)
for domain in self.domains.values():
domain.clear_doc(docname)
def merge_info_from(self, docnames, other, app):
# type: (List[str], BuildEnvironment, Sphinx) -> None
"""Merge global information gathered about *docnames* while reading them
from the *other* environment.
This possibly comes from a parallel build process.
"""
docnames = set(docnames) # type: ignore
for docname in docnames:
self.all_docs[docname] = other.all_docs[docname]
self.included[docname] = other.included[docname]
if docname in other.reread_always:
self.reread_always.add(docname)
for domainname, domain in self.domains.items():
domain.merge_domaindata(docnames, other.domaindata[domainname])
app.emit('env-merge-info', self, docnames, other)
def path2doc(self, filename):
# type: (str) -> Optional[str]
"""Return the docname for the filename if the file is document.
*filename* should be absolute or relative to the source directory.
"""
return self.project.path2doc(filename)
[文档] def doc2path(self, docname, base=True, suffix=None):
# type: (str, Union[bool, str], str) -> str
"""Return the filename for the document name.
If *base* is True, return absolute path under self.srcdir.
If *base* is None, return relative path to self.srcdir.
If *base* is a path string, return absolute path under that.
If *suffix* is not None, add it instead of config.source_suffix.
"""
if suffix:
warnings.warn('The suffix argument for doc2path() is deprecated.',
RemovedInSphinx40Warning)
if base not in (True, None):
warnings.warn('The string style base argument for doc2path() is deprecated.',
RemovedInSphinx40Warning)
pathname = self.project.doc2path(docname, base is True)
if suffix:
filename, _ = path.splitext(pathname)
pathname = filename + suffix
if base and base is not True:
pathname = path.join(base, pathname) # type: ignore
return pathname
[文档] def relfn2path(self, filename, docname=None):
# type: (str, str) -> Tuple[str, str]
"""Return paths to a file referenced from a document, relative to
documentation root and absolute.
In the input "filename", absolute filenames are taken as relative to the
source dir, while relative filenames are relative to the dir of the
containing document.
"""
if filename.startswith('/') or filename.startswith(os.sep):
rel_fn = filename[1:]
else:
docdir = path.dirname(self.doc2path(docname or self.docname,
base=None))
rel_fn = path.join(docdir, filename)
# the path.abspath() might seem redundant, but otherwise artifacts
# such as ".." will remain in the path
return rel_fn, path.abspath(path.join(self.srcdir, rel_fn))
@property
def found_docs(self):
# type: () -> Set[str]
"""contains all existing docnames."""
return self.project.docnames
def find_files(self, config, builder):
# type: (Config, Builder) -> None
"""Find all source files in the source dir and put them in
self.found_docs.
"""
try:
exclude_paths = (self.config.exclude_patterns +
self.config.templates_path +
builder.get_asset_paths())
self.project.discover(exclude_paths)
# Current implementation is applying translated messages in the reading
# phase.Therefore, in order to apply the updated message catalog, it is
# necessary to re-process from the reading phase. Here, if dependency
# is set for the doc source and the mo file, it is processed again from
# the reading phase when mo is updated. In the future, we would like to
# move i18n process into the writing phase, and remove these lines.
if builder.use_message_catalog:
# add catalog mo file dependency
repo = CatalogRepository(self.srcdir, self.config.locale_dirs,
self.config.language, self.config.source_encoding)
for docname in self.found_docs:
domain = docname_to_domain(docname, self.config.gettext_compact)
for catalog in repo.catalogs:
if catalog.domain == domain:
self.dependencies[docname].add(catalog.mo_path)
except OSError as exc:
raise DocumentError(__('Failed to scan documents in %s: %r') % (self.srcdir, exc))
def get_outdated_files(self, config_changed):
# type: (bool) -> Tuple[Set[str], Set[str], Set[str]]
"""Return (added, changed, removed) sets."""
# clear all files no longer present
removed = set(self.all_docs) - self.found_docs
added = set() # type: Set[str]
changed = set() # type: Set[str]
if config_changed:
# config values affect e.g. substitutions
added = self.found_docs
else:
for docname in self.found_docs:
if docname not in self.all_docs:
added.add(docname)
continue
# if the doctree file is not there, rebuild
filename = path.join(self.doctreedir, docname + '.doctree')
if not path.isfile(filename):
changed.add(docname)
continue
# check the "reread always" list
if docname in self.reread_always:
changed.add(docname)
continue
# check the mtime of the document
mtime = self.all_docs[docname]
newmtime = path.getmtime(self.doc2path(docname))
if newmtime > mtime:
changed.add(docname)
continue
# finally, check the mtime of dependencies
for dep in self.dependencies[docname]:
try:
# this will do the right thing when dep is absolute too
deppath = path.join(self.srcdir, dep)
if not path.isfile(deppath):
changed.add(docname)
break
depmtime = path.getmtime(deppath)
if depmtime > mtime:
changed.add(docname)
break
except OSError:
# give it another chance
changed.add(docname)
break
return added, changed, removed
def check_dependents(self, app, already):
# type: (Sphinx, Set[str]) -> Iterator[str]
to_rewrite = [] # type: List[str]
for docnames in app.emit('env-get-updated', self):
to_rewrite.extend(docnames)
for docname in set(to_rewrite):
if docname not in already:
yield docname
# --------- SINGLE FILE READING --------------------------------------------
def prepare_settings(self, docname):
# type: (str) -> None
"""Prepare to set up environment for reading."""
self.temp_data['docname'] = docname
# defaults to the global default, but can be re-set in a document
self.temp_data['default_role'] = self.config.default_role
self.temp_data['default_domain'] = \
self.domains.get(self.config.primary_domain)
# utilities to use while reading a document
@property
def docname(self):
# type: () -> str
"""Returns the docname of the document currently being parsed."""
return self.temp_data['docname']
[文档] def new_serialno(self, category=''):
# type: (str) -> int
"""Return a serial number, e.g. for index entry targets.
The number is guaranteed to be unique in the current document.
"""
key = category + 'serialno'
cur = self.temp_data.get(key, 0)
self.temp_data[key] = cur + 1
return cur
[文档] def note_dependency(self, filename):
# type: (str) -> None
"""Add *filename* as a dependency of the current document.
This means that the document will be rebuilt if this file changes.
*filename* should be absolute or relative to the source directory.
"""
self.dependencies[self.docname].add(filename)
def note_included(self, filename):
# type: (str) -> None
"""Add *filename* as a included from other document.
This means the document is not orphaned.
*filename* should be absolute or relative to the source directory.
"""
self.included[self.docname].add(self.path2doc(filename))
[文档] def note_reread(self):
# type: () -> None
"""Add the current document to the list of documents that will
automatically be re-read at the next build.
"""
self.reread_always.add(self.docname)
def get_domain(self, domainname):
# type: (str) -> Domain
"""Return the domain instance with the specified name.
Raises an ExtensionError if the domain is not registered.
"""
try:
return self.domains[domainname]
except KeyError:
raise ExtensionError(__('Domain %r is not registered') % domainname)
# --------- RESOLVING REFERENCES AND TOCTREES ------------------------------
def get_doctree(self, docname):
# type: (str) -> nodes.document
"""Read the doctree for a file from the pickle and return it."""
filename = path.join(self.doctreedir, docname + '.doctree')
with open(filename, 'rb') as f:
doctree = pickle.load(f)
doctree.settings.env = self
doctree.reporter = LoggingReporter(self.doc2path(docname))
return doctree
def get_and_resolve_doctree(self, docname, builder, doctree=None,
prune_toctrees=True, includehidden=False):
# type: (str, Builder, nodes.document, bool, bool) -> nodes.document
"""Read the doctree from the pickle, resolve cross-references and
toctrees and return it.
"""
if doctree is None:
doctree = self.get_doctree(docname)
# resolve all pending cross-references
self.apply_post_transforms(doctree, docname)
# now, resolve all toctree nodes
for toctreenode in doctree.traverse(addnodes.toctree):
result = TocTree(self).resolve(docname, builder, toctreenode,
prune=prune_toctrees,
includehidden=includehidden)
if result is None:
toctreenode.replace_self([])
else:
toctreenode.replace_self(result)
return doctree
def resolve_toctree(self, docname, builder, toctree, prune=True, maxdepth=0,
titles_only=False, collapse=False, includehidden=False):
# type: (str, Builder, addnodes.toctree, bool, int, bool, bool, bool) -> nodes.Node
"""Resolve a *toctree* node into individual bullet lists with titles
as items, returning None (if no containing titles are found) or
a new node.
If *prune* is True, the tree is pruned to *maxdepth*, or if that is 0,
to the value of the *maxdepth* option on the *toctree* node.
If *titles_only* is True, only toplevel document titles will be in the
resulting tree.
If *collapse* is True, all branches not containing docname will
be collapsed.
"""
return TocTree(self).resolve(docname, builder, toctree, prune,
maxdepth, titles_only, collapse,
includehidden)
def resolve_references(self, doctree, fromdocname, builder):
# type: (nodes.document, str, Builder) -> None
self.apply_post_transforms(doctree, fromdocname)
def apply_post_transforms(self, doctree, docname):
# type: (nodes.document, str) -> None
"""Apply all post-transforms."""
try:
# set env.docname during applying post-transforms
backup = copy(self.temp_data)
self.temp_data['docname'] = docname
transformer = SphinxTransformer(doctree)
transformer.set_environment(self)
transformer.add_transforms(self.app.registry.get_post_transforms())
transformer.apply_transforms()
finally:
self.temp_data = backup
# allow custom references to be resolved
self.app.emit('doctree-resolved', doctree, docname)
def collect_relations(self):
# type: () -> Dict[str, List[str]]
traversed = set()
def traverse_toctree(parent, docname):
# type: (str, str) -> Iterator[Tuple[str, str]]
if parent == docname:
logger.warning(__('self referenced toctree found. Ignored.'), location=docname)
return
# traverse toctree by pre-order
yield parent, docname
traversed.add(docname)
for child in (self.toctree_includes.get(docname) or []):
for subparent, subdocname in traverse_toctree(docname, child):
if subdocname not in traversed:
yield subparent, subdocname
traversed.add(subdocname)
relations = {}
docnames = traverse_toctree(None, self.config.master_doc)
prevdoc = None
parent, docname = next(docnames)
for nextparent, nextdoc in docnames:
relations[docname] = [parent, prevdoc, nextdoc]
prevdoc = docname
docname = nextdoc
parent = nextparent
relations[docname] = [parent, prevdoc, None]
return relations
def check_consistency(self):
# type: () -> None
"""Do consistency checks."""
included = set().union(*self.included.values()) # type: ignore
for docname in sorted(self.all_docs):
if docname not in self.files_to_rebuild:
if docname == self.config.master_doc:
# the master file is not included anywhere ;)
continue
if docname in included:
# the document is included from other documents
continue
if 'orphan' in self.metadata[docname]:
continue
logger.warning(__('document isn\'t included in any toctree'),
location=docname)
# call check-consistency for all extensions
for domain in self.domains.values():
domain.check_consistency()
self.app.emit('env-check-consistency', self)
# --------- METHODS FOR COMPATIBILITY --------------------------------------
def update(self, config, srcdir, doctreedir):
# type: (Config, str, str) -> List[str]
warnings.warn('env.update() is deprecated. Please use builder.read() instead.',
RemovedInSphinx30Warning, stacklevel=2)
return self.app.builder.read()
def _read_serial(self, docnames, app):
# type: (List[str], Sphinx) -> None
warnings.warn('env._read_serial() is deprecated. Please use builder.read() instead.',
RemovedInSphinx30Warning, stacklevel=2)
return self.app.builder._read_serial(docnames)
def _read_parallel(self, docnames, app, nproc):
# type: (List[str], Sphinx, int) -> None
warnings.warn('env._read_parallel() is deprecated. Please use builder.read() instead.',
RemovedInSphinx30Warning, stacklevel=2)
return self.app.builder._read_parallel(docnames, nproc)
def read_doc(self, docname, app=None):
# type: (str, Sphinx) -> None
warnings.warn('env.read_doc() is deprecated. Please use builder.read_doc() instead.',
RemovedInSphinx30Warning, stacklevel=2)
self.app.builder.read_doc(docname)
def write_doctree(self, docname, doctree):
# type: (str, nodes.document) -> None
warnings.warn('env.write_doctree() is deprecated. '
'Please use builder.write_doctree() instead.',
RemovedInSphinx30Warning, stacklevel=2)
self.app.builder.write_doctree(docname, doctree)
@property
def _nitpick_ignore(self):
# type: () -> List[str]
warnings.warn('env._nitpick_ignore is deprecated. '
'Please use config.nitpick_ignore instead.',
RemovedInSphinx30Warning, stacklevel=2)
return self.config.nitpick_ignore
@staticmethod
def load(f, app=None):
# type: (IO, Sphinx) -> BuildEnvironment
warnings.warn('BuildEnvironment.load() is deprecated. '
'Please use pickle.load() instead.',
RemovedInSphinx30Warning, stacklevel=2)
try:
env = pickle.load(f)
except Exception as exc:
# This can happen for example when the pickle is from a
# different version of Sphinx.
raise OSError(exc)
if app:
env.app = app
env.config.values = app.config.values
return env
@classmethod
def loads(cls, string, app=None):
# type: (bytes, Sphinx) -> BuildEnvironment
warnings.warn('BuildEnvironment.loads() is deprecated. '
'Please use pickle.loads() instead.',
RemovedInSphinx30Warning, stacklevel=2)
io = BytesIO(string)
return cls.load(io, app)
@classmethod
def frompickle(cls, filename, app):
# type: (str, Sphinx) -> BuildEnvironment
warnings.warn('BuildEnvironment.frompickle() is deprecated. '
'Please use pickle.load() instead.',
RemovedInSphinx30Warning, stacklevel=2)
with open(filename, 'rb') as f:
return cls.load(f, app)
@staticmethod
def dump(env, f):
# type: (BuildEnvironment, IO) -> None
warnings.warn('BuildEnvironment.dump() is deprecated. '
'Please use pickle.dump() instead.',
RemovedInSphinx30Warning, stacklevel=2)
pickle.dump(env, f, pickle.HIGHEST_PROTOCOL)
@classmethod
def dumps(cls, env):
# type: (BuildEnvironment) -> bytes
warnings.warn('BuildEnvironment.dumps() is deprecated. '
'Please use pickle.dumps() instead.',
RemovedInSphinx30Warning, stacklevel=2)
io = BytesIO()
cls.dump(env, io)
return io.getvalue()
def topickle(self, filename):
# type: (str) -> None
warnings.warn('env.topickle() is deprecated. '
'Please use pickle.dump() instead.',
RemovedInSphinx30Warning, stacklevel=2)
with open(filename, 'wb') as f:
self.dump(self, f)
@property
def versionchanges(self):
# type: () -> Dict[str, List[Tuple[str, str, int, str, str, str]]]
warnings.warn('env.versionchanges() is deprecated. '
'Please use ChangeSetDomain instead.',
RemovedInSphinx30Warning, stacklevel=2)
return self.domaindata['changeset']['changes']
def note_versionchange(self, type, version, node, lineno):
# type: (str, str, addnodes.versionmodified, int) -> None
warnings.warn('env.note_versionchange() is deprecated. '
'Please use ChangeSetDomain.note_changeset() instead.',
RemovedInSphinx30Warning, stacklevel=2)
node['type'] = type
node['version'] = version
node.line = lineno
self.get_domain('changeset').note_changeset(node) # type: ignore
from sphinx.errors import NoUri # NOQA
deprecated_alias('sphinx.environment',
{
'NoUri': NoUri,
},
RemovedInSphinx30Warning)
