247 lines
7.9 KiB
Python
247 lines
7.9 KiB
Python
"""Allow todos to be inserted into your documentation.
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Inclusion of todos can be switched of by a configuration variable.
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The todolist directive collects all todos of your project and lists them along
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with a backlink to the original location.
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"""
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from __future__ import annotations
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from typing import TYPE_CHECKING, Any, cast
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from docutils import nodes
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from docutils.parsers.rst import directives
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from docutils.parsers.rst.directives.admonitions import BaseAdmonition
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import sphinx
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from sphinx import addnodes
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from sphinx.domains import Domain
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from sphinx.errors import NoUri
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from sphinx.locale import _, __
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from sphinx.util import logging, texescape
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from sphinx.util.docutils import SphinxDirective, new_document
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if TYPE_CHECKING:
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from docutils.nodes import Element, Node
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from sphinx.application import Sphinx
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from sphinx.environment import BuildEnvironment
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from sphinx.util.typing import OptionSpec
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from sphinx.writers.html import HTML5Translator
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from sphinx.writers.latex import LaTeXTranslator
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logger = logging.getLogger(__name__)
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class todo_node(nodes.Admonition, nodes.Element):
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pass
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class todolist(nodes.General, nodes.Element):
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pass
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class Todo(BaseAdmonition, SphinxDirective):
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"""
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A todo entry, displayed (if configured) in the form of an admonition.
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"""
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node_class = todo_node
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has_content = True
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required_arguments = 0
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optional_arguments = 0
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final_argument_whitespace = False
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option_spec: OptionSpec = {
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'class': directives.class_option,
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'name': directives.unchanged,
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}
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def run(self) -> list[Node]:
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if not self.options.get('class'):
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self.options['class'] = ['admonition-todo']
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(todo,) = super().run()
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if isinstance(todo, nodes.system_message):
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return [todo]
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elif isinstance(todo, todo_node):
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todo.insert(0, nodes.title(text=_('Todo')))
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todo['docname'] = self.env.docname
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self.add_name(todo)
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self.set_source_info(todo)
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self.state.document.note_explicit_target(todo)
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return [todo]
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else:
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raise RuntimeError # never reached here
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class TodoDomain(Domain):
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name = 'todo'
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label = 'todo'
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@property
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def todos(self) -> dict[str, list[todo_node]]:
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return self.data.setdefault('todos', {})
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def clear_doc(self, docname: str) -> None:
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self.todos.pop(docname, None)
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def merge_domaindata(self, docnames: list[str], otherdata: dict) -> None:
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for docname in docnames:
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self.todos[docname] = otherdata['todos'][docname]
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def process_doc(self, env: BuildEnvironment, docname: str,
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document: nodes.document) -> None:
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todos = self.todos.setdefault(docname, [])
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for todo in document.findall(todo_node):
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env.app.emit('todo-defined', todo)
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todos.append(todo)
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if env.config.todo_emit_warnings:
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logger.warning(__("TODO entry found: %s"), todo[1].astext(),
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location=todo)
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class TodoList(SphinxDirective):
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"""
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A list of all todo entries.
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"""
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has_content = False
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required_arguments = 0
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optional_arguments = 0
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final_argument_whitespace = False
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option_spec: OptionSpec = {}
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def run(self) -> list[Node]:
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# Simply insert an empty todolist node which will be replaced later
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# when process_todo_nodes is called
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return [todolist('')]
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class TodoListProcessor:
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def __init__(self, app: Sphinx, doctree: nodes.document, docname: str) -> None:
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self.builder = app.builder
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self.config = app.config
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self.env = app.env
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self.domain = cast(TodoDomain, app.env.get_domain('todo'))
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self.document = new_document('')
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self.process(doctree, docname)
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def process(self, doctree: nodes.document, docname: str) -> None:
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todos: list[todo_node] = sum(self.domain.todos.values(), [])
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for node in list(doctree.findall(todolist)):
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if not self.config.todo_include_todos:
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node.parent.remove(node)
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continue
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if node.get('ids'):
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content: list[Element] = [nodes.target()]
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else:
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content = []
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for todo in todos:
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# Create a copy of the todo node
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new_todo = todo.deepcopy()
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new_todo['ids'].clear()
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self.resolve_reference(new_todo, docname)
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content.append(new_todo)
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todo_ref = self.create_todo_reference(todo, docname)
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content.append(todo_ref)
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node.replace_self(content)
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def create_todo_reference(self, todo: todo_node, docname: str) -> nodes.paragraph:
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if self.config.todo_link_only:
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description = _('<<original entry>>')
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else:
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description = (_('(The <<original entry>> is located in %s, line %d.)') %
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(todo.source, todo.line))
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prefix = description[:description.find('<<')]
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suffix = description[description.find('>>') + 2:]
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para = nodes.paragraph(classes=['todo-source'])
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para += nodes.Text(prefix)
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# Create a reference
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linktext = nodes.emphasis(_('original entry'), _('original entry'))
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reference = nodes.reference('', '', linktext, internal=True)
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try:
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reference['refuri'] = self.builder.get_relative_uri(docname, todo['docname'])
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reference['refuri'] += '#' + todo['ids'][0]
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except NoUri:
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# ignore if no URI can be determined, e.g. for LaTeX output
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pass
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para += reference
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para += nodes.Text(suffix)
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return para
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def resolve_reference(self, todo: todo_node, docname: str) -> None:
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"""Resolve references in the todo content."""
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for node in todo.findall(addnodes.pending_xref):
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if 'refdoc' in node:
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node['refdoc'] = docname
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# Note: To resolve references, it is needed to wrap it with document node
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self.document += todo
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self.env.resolve_references(self.document, docname, self.builder)
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self.document.remove(todo)
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def visit_todo_node(self: HTML5Translator, node: todo_node) -> None:
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if self.config.todo_include_todos:
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self.visit_admonition(node)
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else:
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raise nodes.SkipNode
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def depart_todo_node(self: HTML5Translator, node: todo_node) -> None:
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self.depart_admonition(node)
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def latex_visit_todo_node(self: LaTeXTranslator, node: todo_node) -> None:
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if self.config.todo_include_todos:
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self.body.append('\n\\begin{sphinxadmonition}{note}{')
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self.body.append(self.hypertarget_to(node))
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title_node = cast(nodes.title, node[0])
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title = texescape.escape(title_node.astext(), self.config.latex_engine)
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self.body.append('%s:}' % title)
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node.pop(0)
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else:
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raise nodes.SkipNode
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def latex_depart_todo_node(self: LaTeXTranslator, node: todo_node) -> None:
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self.body.append('\\end{sphinxadmonition}\n')
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def setup(app: Sphinx) -> dict[str, Any]:
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app.add_event('todo-defined')
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app.add_config_value('todo_include_todos', False, 'html')
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app.add_config_value('todo_link_only', False, 'html')
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app.add_config_value('todo_emit_warnings', False, 'html')
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app.add_node(todolist)
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app.add_node(todo_node,
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html=(visit_todo_node, depart_todo_node),
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latex=(latex_visit_todo_node, latex_depart_todo_node),
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text=(visit_todo_node, depart_todo_node),
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man=(visit_todo_node, depart_todo_node),
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texinfo=(visit_todo_node, depart_todo_node))
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app.add_directive('todo', Todo)
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app.add_directive('todolist', TodoList)
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app.add_domain(TodoDomain)
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app.connect('doctree-resolved', TodoListProcessor)
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return {
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'version': sphinx.__display_version__,
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'env_version': 2,
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'parallel_read_safe': True,
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}
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