Source code for sphinx.environment

# -*- coding: utf-8 -*-
"""
    sphinx.environment
    ~~~~~~~~~~~~~~~~~~

    Global creation environment.

    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re
import os
import sys
import time
import types
import codecs
import fnmatch
from os import path
from glob import glob

from six import iteritems, itervalues, class_types, next
from six.moves import cPickle as pickle
from docutils import nodes
from docutils.io import NullOutput
from docutils.core import Publisher
from docutils.utils import Reporter, relative_path, get_source_line
from docutils.parsers.rst import roles
from docutils.parsers.rst.languages import en as english
from docutils.frontend import OptionParser

from sphinx import addnodes
from sphinx.io import SphinxStandaloneReader, SphinxDummyWriter, SphinxFileInput
from sphinx.util import get_matching_docs, docname_join, FilenameUniqDict
from sphinx.util.nodes import clean_astext, WarningStream, is_translatable, \
    process_only_nodes
from sphinx.util.osutil import SEP, getcwd, fs_encoding, ensuredir
from sphinx.util.images import guess_mimetype
from sphinx.util.i18n import find_catalog_files, get_image_filename_for_language, \
    search_image_for_language
from sphinx.util.console import bold, purple
from sphinx.util.docutils import sphinx_domains
from sphinx.util.matching import compile_matchers
from sphinx.util.parallel import ParallelTasks, parallel_available, make_chunks
from sphinx.util.websupport import is_commentable
from sphinx.errors import SphinxError, ExtensionError
from sphinx.versioning import add_uids, merge_doctrees
from sphinx.transforms import SphinxContentsFilter
from sphinx.environment.managers.indexentries import IndexEntries
from sphinx.environment.managers.toctree import Toctree


default_settings = {
    'embed_stylesheet': False,
    'cloak_email_addresses': True,
    'pep_base_url': 'https://www.python.org/dev/peps/',
    'rfc_base_url': 'https://tools.ietf.org/html/',
    'input_encoding': 'utf-8-sig',
    'doctitle_xform': False,
    'sectsubtitle_xform': False,
    'halt_level': 5,
    'file_insertion_enabled': True,
}

# This is increased every time an environment attribute is added
# or changed to properly invalidate pickle files.
#
# NOTE: increase base version by 2 to have distinct numbers for Py2 and 3
ENV_VERSION = 50 + (sys.version_info[0] - 2)


dummy_reporter = Reporter('', 4, 4)

versioning_conditions = {
    'none': False,
    'text': is_translatable,
    'commentable': is_commentable,
}


class NoUri(Exception):
    """Raised by get_relative_uri if there is no URI available."""
    pass


[docs]class BuildEnvironment(object): """ 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. """ # --------- ENVIRONMENT PERSISTENCE ---------------------------------------- @staticmethod def frompickle(srcdir, config, filename): with open(filename, 'rb') as picklefile: env = pickle.load(picklefile) if env.version != ENV_VERSION: raise IOError('build environment version not current') if env.srcdir != srcdir: raise IOError('source directory has changed') env.config.values = config.values return env def topickle(self, filename): # remove unpicklable attributes warnfunc = self._warnfunc self.set_warnfunc(None) values = self.config.values del self.config.values domains = self.domains del self.domains managers = self.detach_managers() # remove potentially pickling-problematic values from config for key, val in list(vars(self.config).items()): if key.startswith('_') or \ isinstance(val, types.ModuleType) or \ isinstance(val, types.FunctionType) or \ isinstance(val, class_types): del self.config[key] with open(filename, 'wb') as picklefile: pickle.dump(self, picklefile, pickle.HIGHEST_PROTOCOL) # reset attributes self.attach_managers(managers) self.domains = domains self.config.values = values self.set_warnfunc(warnfunc) # --------- ENVIRONMENT INITIALIZATION ------------------------------------- def __init__(self, srcdir, doctreedir, config): self.doctreedir = doctreedir self.srcdir = srcdir self.config = config # the method of doctree versioning; see set_versioning_method self.versioning_condition = None self.versioning_compare = None # the application object; only set while update() runs self.app = None # all the registered domains, set by the application self.domains = {} # the docutils settings for building self.settings = default_settings.copy() self.settings['env'] = self # the function to write warning messages with self._warnfunc = None # this is to invalidate old pickles self.version = ENV_VERSION # All "docnames" here are /-separated and relative and exclude # the source suffix. self.found_docs = set() # contains all existing docnames self.all_docs = {} # docname -> mtime at the time of reading # contains all read docnames self.dependencies = {} # docname -> set of dependent file # names, relative to documentation root self.included = set() # docnames included from other documents self.reread_always = set() # docnames to re-read unconditionally on # next build # File metadata self.metadata = {} # docname -> dict of metadata items # TOC inventory self.titles = {} # docname -> title node self.longtitles = {} # docname -> title node; only different if # set differently with title directive self.tocs = {} # docname -> table of contents nodetree self.toc_num_entries = {} # 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 = {} # docname -> dict of sectionid -> number self.toc_fignumbers = {} # docname -> dict of figtype -> # dict of figureid -> number self.toctree_includes = {} # docname -> list of toctree includefiles self.files_to_rebuild = {} # docname -> set of files # (containing its TOCs) to rebuild too self.glob_toctrees = set() # docnames that have :glob: toctrees self.numbered_toctrees = set() # docnames that have :numbered: toctrees # domain-specific inventories, here to be pickled self.domaindata = {} # domainname -> domain-specific dict # Other inventories self.indexentries = {} # docname -> list of # (type, string, target, aliasname) self.versionchanges = {} # version -> list of (type, docname, # lineno, module, descname, content) # these map absolute path -> (docnames, unique filename) self.images = FilenameUniqDict() self.dlfiles = FilenameUniqDict() # temporary data storage while reading a document self.temp_data = {} # 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 = {} self.managers = {} self.init_managers() def init_managers(self): managers = {} for manager_class in [IndexEntries, Toctree]: managers[manager_class.name] = manager_class(self) self.attach_managers(managers) def attach_managers(self, managers): for name, manager in iteritems(managers): self.managers[name] = manager manager.attach(self) def detach_managers(self): managers = self.managers self.managers = {} for _, manager in iteritems(managers): manager.detach(self) return managers def set_warnfunc(self, func): self._warnfunc = func self.settings['warning_stream'] = WarningStream(func) def set_versioning_method(self, method, compare): """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. """ 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
[docs] def warn(self, docname, msg, lineno=None, **kwargs): """Emit a warning. This differs from using ``app.warn()`` in that the warning may not be emitted instantly, but collected for emitting all warnings after the update of the environment. """ # strange argument order is due to backwards compatibility self._warnfunc(msg, (docname, lineno), **kwargs)
[docs] def warn_node(self, msg, node, **kwargs): """Like :meth:`warn`, but with source information taken from *node*.""" self._warnfunc(msg, '%s:%s' % get_source_line(node), **kwargs)
def clear_doc(self, docname): """Remove all traces of a source file in the inventory.""" if docname in self.all_docs: self.all_docs.pop(docname, None) self.reread_always.discard(docname) self.metadata.pop(docname, None) self.dependencies.pop(docname, None) self.titles.pop(docname, None) self.longtitles.pop(docname, None) self.images.purge_doc(docname) self.dlfiles.purge_doc(docname) for version, changes in self.versionchanges.items(): new = [change for change in changes if change[1] != docname] changes[:] = new for manager in itervalues(self.managers): manager.clear_doc(docname) for domain in self.domains.values(): domain.clear_doc(docname) def merge_info_from(self, docnames, other, app): """Merge global information gathered about *docnames* while reading them from the *other* environment. This possibly comes from a parallel build process. """ docnames = set(docnames) for docname in docnames: self.all_docs[docname] = other.all_docs[docname] if docname in other.reread_always: self.reread_always.add(docname) self.metadata[docname] = other.metadata[docname] if docname in other.dependencies: self.dependencies[docname] = other.dependencies[docname] self.titles[docname] = other.titles[docname] self.longtitles[docname] = other.longtitles[docname] self.images.merge_other(docnames, other.images) self.dlfiles.merge_other(docnames, other.dlfiles) for version, changes in other.versionchanges.items(): self.versionchanges.setdefault(version, []).extend( change for change in changes if change[1] in docnames) for manager in itervalues(self.managers): manager.merge_other(docnames, other) 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): """Return the docname for the filename if the file is document. *filename* should be absolute or relative to the source directory. """ if filename.startswith(self.srcdir): filename = filename[len(self.srcdir) + 1:] for suffix in self.config.source_suffix: if fnmatch.fnmatch(filename, '*' + suffix): return filename[:-len(suffix)] else: # the file does not have docname return None
[docs] def doc2path(self, docname, base=True, suffix=None): """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. """ docname = docname.replace(SEP, path.sep) if suffix is None: for candidate_suffix in self.config.source_suffix: if path.isfile(path.join(self.srcdir, docname) + candidate_suffix): suffix = candidate_suffix break else: # document does not exist suffix = self.config.source_suffix[0] if base is True: return path.join(self.srcdir, docname) + suffix elif base is None: return docname + suffix else: return path.join(base, docname) + suffix
[docs] def relfn2path(self, filename, docname=None): """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) try: # 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)) except UnicodeDecodeError: # the source directory is a bytestring with non-ASCII characters; # let's try to encode the rel_fn in the file system encoding enc_rel_fn = rel_fn.encode(sys.getfilesystemencoding()) return rel_fn, path.abspath(path.join(self.srcdir, enc_rel_fn))
def find_files(self, config, buildername=None): """Find all source files in the source dir and put them in self.found_docs. """ matchers = compile_matchers( config.exclude_patterns[:] + config.templates_path + config.html_extra_path + ['**/_sources', '.#*', '**/.#*', '*.lproj/**'] ) self.found_docs = set() for docname in get_matching_docs(self.srcdir, config.source_suffix, exclude_matchers=matchers): if os.access(self.doc2path(docname), os.R_OK): self.found_docs.add(docname) else: self.warn(docname, "document not readable. Ignored.") # 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 buildername != 'gettext': # add catalog mo file dependency for docname in self.found_docs: catalog_files = find_catalog_files( docname, self.srcdir, self.config.locale_dirs, self.config.language, self.config.gettext_compact) for filename in catalog_files: self.dependencies.setdefault(docname, set()).add(filename) def get_outdated_files(self, config_changed): """Return (added, changed, removed) sets.""" # clear all files no longer present removed = set(self.all_docs) - self.found_docs added = set() changed = set() 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 if not path.isfile(self.doc2path(docname, self.doctreedir, '.doctree')): 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.get(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 EnvironmentError: # give it another chance changed.add(docname) break return added, changed, removed def update(self, config, srcdir, doctreedir, app): """(Re-)read all files new or changed since last update. Store all environment docnames in the canonical format (ie using SEP as a separator in place of os.path.sep). """ config_changed = False if self.config is None: msg = '[new config] ' config_changed = True else: # check if a config value was changed that affects how # doctrees are read for key, descr in iteritems(config.values): if descr[1] != 'env': continue if self.config[key] != config[key]: msg = '[config changed] ' config_changed = True break else: msg = '' # this value is not covered by the above loop because it is handled # specially by the config class if self.config.extensions != config.extensions: msg = '[extensions changed] ' config_changed = True # the source and doctree directories may have been relocated self.srcdir = srcdir self.doctreedir = doctreedir self.find_files(config, app.buildername) self.config = config # this cache also needs to be updated every time self._nitpick_ignore = set(self.config.nitpick_ignore) app.info(bold('updating environment: '), nonl=True) added, changed, removed = self.get_outdated_files(config_changed) # allow user intervention as well for docs in app.emit('env-get-outdated', self, added, changed, removed): changed.update(set(docs) & self.found_docs) # if files were added or removed, all documents with globbed toctrees # must be reread if added or removed: # ... but not those that already were removed changed.update(self.glob_toctrees & self.found_docs) msg += '%s added, %s changed, %s removed' % (len(added), len(changed), len(removed)) app.info(msg) self.app = app # clear all files no longer present for docname in removed: app.emit('env-purge-doc', self, docname) self.clear_doc(docname) # read all new and changed files docnames = sorted(added | changed) # allow changing and reordering the list of docs to read app.emit('env-before-read-docs', self, docnames) # check if we should do parallel or serial read par_ok = False if parallel_available and len(docnames) > 5 and app.parallel > 1: par_ok = True for extname, md in app._extension_metadata.items(): ext_ok = md.get('parallel_read_safe') if ext_ok: continue if ext_ok is None: app.warn('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' % extname) app.warn('doing serial read') else: app.warn('the %s extension is not safe for parallel ' 'reading, doing serial read' % extname) par_ok = False break if par_ok: self._read_parallel(docnames, app, nproc=app.parallel) else: self._read_serial(docnames, app) if config.master_doc not in self.all_docs: raise SphinxError('master file %s not found' % self.doc2path(config.master_doc)) self.app = None for retval in app.emit('env-updated', self): if retval is not None: docnames.extend(retval) return sorted(docnames) def _read_serial(self, docnames, app): for docname in app.status_iterator(docnames, 'reading sources... ', purple, len(docnames)): # remove all inventory entries for that file app.emit('env-purge-doc', self, docname) self.clear_doc(docname) self.read_doc(docname, app) def _read_parallel(self, docnames, app, nproc): # clear all outdated docs at once for docname in docnames: app.emit('env-purge-doc', self, docname) self.clear_doc(docname) def read_process(docs): self.app = app self.warnings = [] self.set_warnfunc(lambda *args, **kwargs: self.warnings.append((args, kwargs))) for docname in docs: self.read_doc(docname, app) # allow pickling self to send it back self.set_warnfunc(None) del self.app del self.domains del self.config.values del self.config return self def merge(docs, otherenv): warnings.extend(otherenv.warnings) self.merge_info_from(docs, otherenv, app) tasks = ParallelTasks(nproc) chunks = make_chunks(docnames, nproc) warnings = [] for chunk in app.status_iterator( chunks, 'reading sources... ', purple, len(chunks)): tasks.add_task(read_process, chunk, merge) # make sure all threads have finished app.info(bold('waiting for workers...')) tasks.join() for warning, kwargs in warnings: self._warnfunc(*warning, **kwargs) def check_dependents(self, already): to_rewrite = (self.toctree.assign_section_numbers() + self.toctree.assign_figure_numbers()) for docname in set(to_rewrite): if docname not in already: yield docname # --------- SINGLE FILE READING -------------------------------------------- def warn_and_replace(self, error): """Custom decoding error handler that warns and replaces.""" linestart = error.object.rfind(b'\n', 0, error.start) lineend = error.object.find(b'\n', error.start) if lineend == -1: lineend = len(error.object) lineno = error.object.count(b'\n', 0, error.start) + 1 self.warn(self.docname, 'undecodable source characters, ' 'replacing with "?": %r' % (error.object[linestart+1:error.start] + b'>>>' + error.object[error.start:error.end] + b'<<<' + error.object[error.end:lineend]), lineno) return (u'?', error.end) def read_doc(self, docname, app=None): """Parse a file and add/update inventory entries for the doctree.""" self.temp_data['docname'] = docname # defaults to the global default, but can be re-set in a document self.temp_data['default_domain'] = \ self.domains.get(self.config.primary_domain) self.settings['input_encoding'] = self.config.source_encoding self.settings['trim_footnote_reference_space'] = \ self.config.trim_footnote_reference_space self.settings['gettext_compact'] = self.config.gettext_compact docutilsconf = path.join(self.srcdir, 'docutils.conf') # read docutils.conf from source dir, not from current dir OptionParser.standard_config_files[1] = docutilsconf if path.isfile(docutilsconf): self.note_dependency(docutilsconf) with sphinx_domains(self): if self.config.default_role: role_fn, messages = roles.role(self.config.default_role, english, 0, dummy_reporter) if role_fn: roles._roles[''] = role_fn else: self.warn(docname, 'default role %s not found' % self.config.default_role) codecs.register_error('sphinx', self.warn_and_replace) # publish manually reader = SphinxStandaloneReader(self.app, parsers=self.config.source_parsers) pub = Publisher(reader=reader, writer=SphinxDummyWriter(), destination_class=NullOutput) pub.set_components(None, 'restructuredtext', None) pub.process_programmatic_settings(None, self.settings, None) src_path = self.doc2path(docname) source = SphinxFileInput(app, self, source=None, source_path=src_path, encoding=self.config.source_encoding) pub.source = source pub.settings._source = src_path pub.set_destination(None, None) pub.publish() doctree = pub.document # post-processing self.process_dependencies(docname, doctree) self.process_images(docname, doctree) self.process_downloads(docname, doctree) self.process_metadata(docname, doctree) self.create_title_from(docname, doctree) for manager in itervalues(self.managers): manager.process_doc(docname, doctree) for domain in itervalues(self.domains): domain.process_doc(self, docname, doctree) # allow extension-specific post-processing if app: app.emit('doctree-read', doctree) # store time of reading, for outdated files detection # (Some filesystems have coarse timestamp resolution; # therefore time.time() can be older than filesystem's timestamp. # For example, FAT32 has 2sec timestamp resolution.) self.all_docs[docname] = max( time.time(), path.getmtime(self.doc2path(docname))) if self.versioning_condition: old_doctree = None if self.versioning_compare: # get old doctree try: with open(self.doc2path(docname, self.doctreedir, '.doctree'), 'rb') as f: old_doctree = pickle.load(f) except EnvironmentError: pass # add uids for versioning if not self.versioning_compare or old_doctree is None: list(add_uids(doctree, self.versioning_condition)) else: list(merge_doctrees( old_doctree, doctree, self.versioning_condition)) # make it picklable doctree.reporter = None doctree.transformer = None doctree.settings.warning_stream = None doctree.settings.env = None doctree.settings.record_dependencies = None # cleanup self.temp_data.clear() self.ref_context.clear() roles._roles.pop('', None) # if a document has set a local default role # save the parsed doctree doctree_filename = self.doc2path(docname, self.doctreedir, '.doctree') ensuredir(path.dirname(doctree_filename)) with open(doctree_filename, 'wb') as f: pickle.dump(doctree, f, pickle.HIGHEST_PROTOCOL) # utilities to use while reading a document @property def docname(self): """Returns the docname of the document currently being parsed.""" return self.temp_data['docname'] @property def currmodule(self): """Backwards compatible alias. Will be removed.""" self.warn(self.docname, 'env.currmodule is being referenced by an ' 'extension; this API will be removed in the future') return self.ref_context.get('py:module') @property def currclass(self): """Backwards compatible alias. Will be removed.""" self.warn(self.docname, 'env.currclass is being referenced by an ' 'extension; this API will be removed in the future') return self.ref_context.get('py:class')
[docs] def new_serialno(self, category=''): """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
[docs] def note_dependency(self, filename): """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.setdefault(self.docname, set()).add(filename)
def note_included(self, filename): """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.add(self.path2doc(filename))
[docs] def note_reread(self): """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 note_versionchange(self, type, version, node, lineno): self.versionchanges.setdefault(version, []).append( (type, self.temp_data['docname'], lineno, self.ref_context.get('py:module'), self.temp_data.get('object'), node.astext())) # post-processing of read doctrees def process_dependencies(self, docname, doctree): """Process docutils-generated dependency info.""" cwd = getcwd() frompath = path.join(path.normpath(self.srcdir), 'dummy') deps = doctree.settings.record_dependencies if not deps: return for dep in deps.list: # the dependency path is relative to the working dir, so get # one relative to the srcdir if isinstance(dep, bytes): dep = dep.decode(fs_encoding) relpath = relative_path(frompath, path.normpath(path.join(cwd, dep))) self.dependencies.setdefault(docname, set()).add(relpath) def process_downloads(self, docname, doctree): """Process downloadable file paths. """ for node in doctree.traverse(addnodes.download_reference): targetname = node['reftarget'] rel_filename, filename = self.relfn2path(targetname, docname) self.dependencies.setdefault(docname, set()).add(rel_filename) if not os.access(filename, os.R_OK): self.warn_node('download file not readable: %s' % filename, node) continue uniquename = self.dlfiles.add_file(docname, filename) node['filename'] = uniquename def process_images(self, docname, doctree): """Process and rewrite image URIs.""" def collect_candidates(imgpath, candidates): globbed = {} for filename in glob(imgpath): new_imgpath = relative_path(path.join(self.srcdir, 'dummy'), filename) try: mimetype = guess_mimetype(filename) if mimetype not in candidates: globbed.setdefault(mimetype, []).append(new_imgpath) except (OSError, IOError) as err: self.warn_node('image file %s not readable: %s' % (filename, err), node) for key, files in iteritems(globbed): candidates[key] = sorted(files, key=len)[0] # select by similarity for node in doctree.traverse(nodes.image): # Map the mimetype to the corresponding image. The writer may # choose the best image from these candidates. The special key * is # set if there is only single candidate to be used by a writer. # The special key ? is set for nonlocal URIs. node['candidates'] = candidates = {} imguri = node['uri'] if imguri.startswith('data:'): self.warn_node('image data URI found. some builders might not support', node, type='image', subtype='data_uri') candidates['?'] = imguri continue elif imguri.find('://') != -1: self.warn_node('nonlocal image URI found: %s' % imguri, node, type='image', subtype='nonlocal_uri') candidates['?'] = imguri continue rel_imgpath, full_imgpath = self.relfn2path(imguri, docname) if self.config.language: # substitute figures (ex. foo.png -> foo.en.png) i18n_full_imgpath = search_image_for_language(full_imgpath, self) if i18n_full_imgpath != full_imgpath: full_imgpath = i18n_full_imgpath rel_imgpath = relative_path(path.join(self.srcdir, 'dummy'), i18n_full_imgpath) # set imgpath as default URI node['uri'] = rel_imgpath if rel_imgpath.endswith(os.extsep + '*'): if self.config.language: # Search language-specific figures at first i18n_imguri = get_image_filename_for_language(imguri, self) _, full_i18n_imgpath = self.relfn2path(i18n_imguri, docname) collect_candidates(full_i18n_imgpath, candidates) collect_candidates(full_imgpath, candidates) else: candidates['*'] = rel_imgpath # map image paths to unique image names (so that they can be put # into a single directory) for imgpath in itervalues(candidates): self.dependencies.setdefault(docname, set()).add(imgpath) if not os.access(path.join(self.srcdir, imgpath), os.R_OK): self.warn_node('image file not readable: %s' % imgpath, node) continue self.images.add_file(docname, imgpath) def process_metadata(self, docname, doctree): """Process the docinfo part of the doctree as metadata. Keep processing minimal -- just return what docutils says. """ self.metadata[docname] = md = {} try: docinfo = doctree[0] except IndexError: # probably an empty document return if docinfo.__class__ is not nodes.docinfo: # nothing to see here return for node in docinfo: # nodes are multiply inherited... if isinstance(node, nodes.authors): md['authors'] = [author.astext() for author in node] elif isinstance(node, nodes.TextElement): # e.g. author md[node.__class__.__name__] = node.astext() else: name, body = node md[name.astext()] = body.astext() for name, value in md.items(): if name in ('tocdepth',): try: value = int(value) except ValueError: value = 0 md[name] = value del doctree[0] def create_title_from(self, docname, document): """Add a title node to the document (just copy the first section title), and store that title in the environment. """ titlenode = nodes.title() longtitlenode = titlenode # explicit title set with title directive; use this only for # the <title> tag in HTML output if 'title' in document: longtitlenode = nodes.title() longtitlenode += nodes.Text(document['title']) # look for first section title and use that as the title for node in document.traverse(nodes.section): visitor = SphinxContentsFilter(document) node[0].walkabout(visitor) titlenode += visitor.get_entry_text() break else: # document has no title titlenode += nodes.Text('<no title>') self.titles[docname] = titlenode self.longtitles[docname] = longtitlenode def note_toctree(self, docname, toctreenode): """Note a TOC tree directive in a document and gather information about file relations from it. """ self.toctree.note_toctree(docname, toctreenode) def get_toc_for(self, docname, builder): """Return a TOC nodetree -- for use on the same page only!""" return self.toctree.get_toc_for(docname, builder) def get_toctree_for(self, docname, builder, collapse, **kwds): """Return the global TOC nodetree.""" return self.toctree.get_toctree_for(docname, builder, collapse, **kwds) def get_domain(self, domainname): """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): """Read the doctree for a file from the pickle and return it.""" doctree_filename = self.doc2path(docname, self.doctreedir, '.doctree') with open(doctree_filename, 'rb') as f: doctree = pickle.load(f) doctree.settings.env = self doctree.reporter = Reporter(self.doc2path(docname), 2, 5, stream=WarningStream(self._warnfunc)) return doctree def get_and_resolve_doctree(self, docname, builder, doctree=None, prune_toctrees=True, includehidden=False): """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.resolve_references(doctree, docname, builder) # now, resolve all toctree nodes for toctreenode in doctree.traverse(addnodes.toctree): result = self.resolve_toctree(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): """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 self.toctree.resolve_toctree(docname, builder, toctree, prune, maxdepth, titles_only, collapse, includehidden) def resolve_references(self, doctree, fromdocname, builder): for node in doctree.traverse(addnodes.pending_xref): contnode = node[0].deepcopy() newnode = None typ = node['reftype'] target = node['reftarget'] refdoc = node.get('refdoc', fromdocname) domain = None try: if 'refdomain' in node and node['refdomain']: # let the domain try to resolve the reference try: domain = self.domains[node['refdomain']] except KeyError: raise NoUri newnode = domain.resolve_xref(self, refdoc, builder, typ, target, node, contnode) # really hardwired reference types elif typ == 'any': newnode = self._resolve_any_reference(builder, refdoc, node, contnode) elif typ == 'doc': newnode = self._resolve_doc_reference(builder, refdoc, node, contnode) # no new node found? try the missing-reference event if newnode is None: newnode = builder.app.emit_firstresult( 'missing-reference', self, node, contnode) # still not found? warn if node wishes to be warned about or # we are in nit-picky mode if newnode is None: self._warn_missing_reference(refdoc, typ, target, node, domain) except NoUri: newnode = contnode node.replace_self(newnode or contnode) # remove only-nodes that do not belong to our builder process_only_nodes(doctree, builder.tags, warn_node=self.warn_node) # allow custom references to be resolved builder.app.emit('doctree-resolved', doctree, fromdocname) def _warn_missing_reference(self, refdoc, typ, target, node, domain): warn = node.get('refwarn') if self.config.nitpicky: warn = True if self._nitpick_ignore: dtype = domain and '%s:%s' % (domain.name, typ) or typ if (dtype, target) in self._nitpick_ignore: warn = False # for "std" types also try without domain name if (not domain or domain.name == 'std') and \ (typ, target) in self._nitpick_ignore: warn = False if not warn: return if domain and typ in domain.dangling_warnings: msg = domain.dangling_warnings[typ] elif typ == 'doc': msg = 'unknown document: %(target)s' elif node.get('refdomain', 'std') not in ('', 'std'): msg = '%s:%s reference target not found: %%(target)s' % \ (node['refdomain'], typ) else: msg = '%r reference target not found: %%(target)s' % typ self.warn_node(msg % {'target': target}, node, type='ref', subtype=typ) def _resolve_doc_reference(self, builder, refdoc, node, contnode): # directly reference to document by source name; # can be absolute or relative docname = docname_join(refdoc, node['reftarget']) if docname in self.all_docs: if node['refexplicit']: # reference with explicit title caption = node.astext() else: caption = clean_astext(self.titles[docname]) innernode = nodes.inline(caption, caption) innernode['classes'].append('doc') newnode = nodes.reference('', '', internal=True) newnode['refuri'] = builder.get_relative_uri(refdoc, docname) newnode.append(innernode) return newnode def _resolve_any_reference(self, builder, refdoc, node, contnode): """Resolve reference generated by the "any" role.""" target = node['reftarget'] results = [] # first, try resolving as :doc: doc_ref = self._resolve_doc_reference(builder, refdoc, node, contnode) if doc_ref: results.append(('doc', doc_ref)) # next, do the standard domain (makes this a priority) results.extend(self.domains['std'].resolve_any_xref( self, refdoc, builder, target, node, contnode)) for domain in self.domains.values(): if domain.name == 'std': continue # we did this one already try: results.extend(domain.resolve_any_xref(self, refdoc, builder, target, node, contnode)) except NotImplementedError: # the domain doesn't yet support the new interface # we have to manually collect possible references (SLOW) for role in domain.roles: res = domain.resolve_xref(self, refdoc, builder, role, target, node, contnode) if res and isinstance(res[0], nodes.Element): results.append(('%s:%s' % (domain.name, role), res)) # now, see how many matches we got... if not results: return None if len(results) > 1: nice_results = ' or '.join(':%s:' % r[0] for r in results) self.warn_node('more than one target found for \'any\' cross-' 'reference %r: could be %s' % (target, nice_results), node) res_role, newnode = results[0] # Override "any" class with the actual role type to get the styling # approximately correct. res_domain = res_role.split(':')[0] if newnode and newnode[0].get('classes'): newnode[0]['classes'].append(res_domain) newnode[0]['classes'].append(res_role.replace(':', '-')) return newnode def create_index(self, builder, group_entries=True, _fixre=re.compile(r'(.*) ([(][^()]*[)])')): return self.indices.create_index(builder, group_entries=group_entries, _fixre=_fixre) def collect_relations(self): traversed = set() def traverse_toctree(parent, docname): if parent == docname: self.warn(docname, 'self referenced toctree found. Ignored.') 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): """Do consistency checks.""" 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 self.included: # the document is included from other documents continue if 'orphan' in self.metadata[docname]: continue self.warn(docname, 'document isn\'t included in any toctree')