/usr/lib/python2.7/dist-packages/sphinx/events.py is in python-sphinx 1.6.7-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
sphinx.events
~~~~~~~~~~~~~
Sphinx core events.
Gracefully adapted from the TextPress system by Armin.
:copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from __future__ import print_function
from collections import OrderedDict, defaultdict
from six import itervalues
from sphinx.errors import ExtensionError
from sphinx.locale import __
if False:
# For type annotation
from typing import Any, Callable, Dict, List # NOQA
# List of all known core events. Maps name to arguments description.
core_events = {
'builder-inited': '',
'env-get-outdated': 'env, added, changed, removed',
'env-get-updated': 'env',
'env-purge-doc': 'env, docname',
'env-before-read-docs': 'env, docnames',
'env-check-consistency': 'env',
'source-read': 'docname, source text',
'doctree-read': 'the doctree before being pickled',
'env-merge-info': 'env, read docnames, other env instance',
'missing-reference': 'env, node, contnode',
'doctree-resolved': 'doctree, docname',
'env-updated': 'env',
'html-collect-pages': 'builder',
'html-page-context': 'pagename, context, doctree or None',
'build-finished': 'exception',
} # type: Dict[unicode, unicode]
class EventManager(object):
def __init__(self):
# type: () -> None
self.events = core_events.copy()
self.listeners = defaultdict(OrderedDict) # type: Dict[unicode, Dict[int, Callable]]
self.next_listener_id = 0
def add(self, name):
# type: (unicode) -> None
if name in self.events:
raise ExtensionError(__('Event %r already present') % name)
self.events[name] = ''
def connect(self, name, callback):
# type: (unicode, Callable) -> int
if name not in self.events:
raise ExtensionError(__('Unknown event name: %s') % name)
listener_id = self.next_listener_id
self.next_listener_id += 1
self.listeners[name][listener_id] = callback
return listener_id
def disconnect(self, listener_id):
# type: (int) -> None
for event in itervalues(self.listeners):
event.pop(listener_id, None)
def emit(self, name, *args):
# type: (unicode, Any) -> List
results = []
for callback in itervalues(self.listeners[name]):
results.append(callback(*args))
return results
def emit_firstresult(self, name, *args):
# type: (unicode, Any) -> Any
for result in self.emit(name, *args):
if result is not None:
return result
return None
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