Source code for sphinxcontrib.websupport.core

# -*- coding: utf-8 -*-
"""
    sphinxcontrib.websupport.core
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Base Module for web support functions.

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

import sys
import posixpath
from os import path

from six.moves import cPickle as pickle
from jinja2 import Environment, FileSystemLoader
from docutils.core import publish_parts

from sphinx.locale import _
from sphinx.util.osutil import ensuredir
from sphinx.util.jsonimpl import dumps as dump_json
from sphinx.util.pycompat import htmlescape
from sphinxcontrib.websupport import errors
from sphinxcontrib.websupport.search import BaseSearch, SEARCH_ADAPTERS
from sphinxcontrib.websupport.storage import StorageBackend

if False:
    # For type annotation
    from typing import Dict  # NOQA


[docs]class WebSupport(object): """The main API class for the web support package. All interactions with the web support package should occur through this class. """ def __init__(self, srcdir=None, # only required for building builddir='', # the dir with data/static/doctrees subdirs datadir=None, # defaults to builddir/data staticdir=None, # defaults to builddir/static doctreedir=None, # defaults to builddir/doctrees search=None, # defaults to no search storage=None, # defaults to SQLite in datadir status=sys.stdout, warning=sys.stderr, moderation_callback=None, allow_anonymous_comments=True, docroot='', staticroot='static', ): # directories self.srcdir = srcdir self.builddir = builddir self.outdir = path.join(builddir, 'data') self.datadir = datadir or self.outdir self.staticdir = staticdir or path.join(self.builddir, 'static') self.doctreedir = staticdir or path.join(self.builddir, 'doctrees') # web server virtual paths self.staticroot = staticroot.strip('/') self.docroot = docroot.strip('/') self.status = status self.warning = warning self.moderation_callback = moderation_callback self.allow_anonymous_comments = allow_anonymous_comments self._init_templating() self._init_search(search) self._init_storage(storage) self._globalcontext = None # type: ignore self._make_base_comment_options() def _init_storage(self, storage): if isinstance(storage, StorageBackend): self.storage = storage else: # If a StorageBackend isn't provided, use the default # SQLAlchemy backend. from sphinxcontrib.websupport.storage.sqlalchemystorage \ import SQLAlchemyStorage if not storage: # no explicit DB path given; create default sqlite database db_path = path.join(self.datadir, 'db', 'websupport.db') ensuredir(path.dirname(db_path)) storage = 'sqlite:///' + db_path self.storage = SQLAlchemyStorage(storage) def _init_templating(self): import sphinx template_path = path.join(sphinx.package_dir, 'themes', 'basic') loader = FileSystemLoader(template_path) self.template_env = Environment(loader=loader) def _init_search(self, search): if isinstance(search, BaseSearch): self.search = search else: mod, cls = SEARCH_ADAPTERS[search or 'null'] mod = 'sphinxcontrib.websupport.search.' + mod SearchClass = getattr(__import__(mod, None, None, [cls]), cls) search_path = path.join(self.datadir, 'search') self.search = SearchClass(search_path) self.results_template = \ self.template_env.get_template('searchresults.html')
[docs] def build(self): """Build the documentation. Places the data into the `outdir` directory. Use it like this:: support = WebSupport(srcdir, builddir, search='xapian') support.build() This will read reStructured text files from `srcdir`. Then it will build the pickles and search index, placing them into `builddir`. It will also save node data to the database. """ if not self.srcdir: raise RuntimeError('No srcdir associated with WebSupport object') from sphinx.application import Sphinx app = Sphinx(self.srcdir, self.srcdir, self.outdir, self.doctreedir, 'websupport', status=self.status, warning=self.warning) app.builder.set_webinfo(self.staticdir, self.staticroot, # type: ignore self.search, self.storage) self.storage.pre_build() app.build() self.storage.post_build()
def get_globalcontext(self): """Load and return the "global context" pickle.""" if not self._globalcontext: infilename = path.join(self.datadir, 'globalcontext.pickle') with open(infilename, 'rb') as f: self._globalcontext = pickle.load(f) return self._globalcontext
[docs] def get_document(self, docname, username='', moderator=False): """Load and return a document from a pickle. The document will be a dict object which can be used to render a template:: support = WebSupport(datadir=datadir) support.get_document('index', username, moderator) In most cases `docname` will be taken from the request path and passed directly to this function. In Flask, that would be something like this:: @app.route('/<path:docname>') def index(docname): username = g.user.name if g.user else '' moderator = g.user.moderator if g.user else False try: document = support.get_document(docname, username, moderator) except DocumentNotFoundError: abort(404) render_template('doc.html', document=document) The document dict that is returned contains the following items to be used during template rendering. * **body**: The main body of the document as HTML * **sidebar**: The sidebar of the document as HTML * **relbar**: A div containing links to related documents * **title**: The title of the document * **css**: Links to css files used by Sphinx * **script**: Javascript containing comment options This raises :class:`~sphinxcontrib.websupport.errors.DocumentNotFoundError` if a document matching `docname` is not found. :param docname: the name of the document to load. """ docpath = path.join(self.datadir, 'pickles', docname) if path.isdir(docpath): infilename = docpath + '/index.fpickle' if not docname: docname = 'index' else: docname += '/index' else: infilename = docpath + '.fpickle' try: with open(infilename, 'rb') as f: document = pickle.load(f) except IOError: raise errors.DocumentNotFoundError( 'The document "%s" could not be found' % docname) comment_opts = self._make_comment_options(username, moderator) comment_meta = self._make_metadata( self.storage.get_metadata(docname, moderator)) document['script'] = comment_opts + comment_meta + document['script'] return document
[docs] def get_search_results(self, q): """Perform a search for the query `q`, and create a set of search results. Then render the search results as html and return a context dict like the one created by :meth:`get_document`:: document = support.get_search_results(q) :param q: the search query """ results = self.search.query(q) ctx = { 'q': q, 'search_performed': True, 'search_results': results, 'docroot': '../', # XXX '_': _, } document = { 'body': self.results_template.render(ctx), 'title': 'Search Results', 'sidebar': '', 'relbar': '' } return document
[docs] def get_data(self, node_id, username=None, moderator=False): """Get the comments and source associated with `node_id`. If `username` is given vote information will be included with the returned comments. The default CommentBackend returns a dict with two keys, *source*, and *comments*. *source* is raw source of the node and is used as the starting point for proposals a user can add. *comments* is a list of dicts that represent a comment, each having the following items: ============= ====================================================== Key Contents ============= ====================================================== text The comment text. username The username that was stored with the comment. id The comment's unique identifier. rating The comment's current rating. age The time in seconds since the comment was added. time A dict containing time information. It contains the following keys: year, month, day, hour, minute, second, iso, and delta. `iso` is the time formatted in ISO 8601 format. `delta` is a printable form of how old the comment is (e.g. "3 hours ago"). vote If `user_id` was given, this will be an integer representing the vote. 1 for an upvote, -1 for a downvote, or 0 if unvoted. node The id of the node that the comment is attached to. If the comment's parent is another comment rather than a node, this will be null. parent The id of the comment that this comment is attached to if it is not attached to a node. children A list of all children, in this format. proposal_diff An HTML representation of the differences between the the current source and the user's proposed source. ============= ====================================================== :param node_id: the id of the node to get comments for. :param username: the username of the user viewing the comments. :param moderator: whether the user is a moderator. """ return self.storage.get_data(node_id, username, moderator)
def delete_comment(self, comment_id, username='', moderator=False): """Delete a comment. If `moderator` is True, the comment and all descendants will be deleted from the database, and the function returns ``True``. If `moderator` is False, the comment will be marked as deleted (but not removed from the database so as not to leave any comments orphaned), but only if the `username` matches the `username` on the comment. The username and text files are replaced with "[deleted]" . In this case, the function returns ``False``. This raises :class:`~sphinxcontrib.websupport.errors.UserNotAuthorizedError` if moderator is False and `username` doesn't match username on the comment. :param comment_id: the id of the comment to delete. :param username: the username requesting the deletion. :param moderator: whether the requestor is a moderator. """ return self.storage.delete_comment(comment_id, username, moderator)
[docs] def add_comment(self, text, node_id='', parent_id='', displayed=True, username=None, time=None, proposal=None, moderator=False): """Add a comment to a node or another comment. Returns the comment in the same format as :meth:`get_comments`. If the comment is being attached to a node, pass in the node's id (as a string) with the node keyword argument:: comment = support.add_comment(text, node_id=node_id) If the comment is the child of another comment, provide the parent's id (as a string) with the parent keyword argument:: comment = support.add_comment(text, parent_id=parent_id) If you would like to store a username with the comment, pass in the optional `username` keyword argument:: comment = support.add_comment(text, node=node_id, username=username) :param parent_id: the prefixed id of the comment's parent. :param text: the text of the comment. :param displayed: for moderation purposes :param username: the username of the user making the comment. :param time: the time the comment was created, defaults to now. """ if username is None: if self.allow_anonymous_comments: username = 'Anonymous' else: raise errors.UserNotAuthorizedError() parsed = self._parse_comment_text(text) comment = self.storage.add_comment(parsed, displayed, username, time, proposal, node_id, parent_id, moderator) comment['original_text'] = text if not displayed and self.moderation_callback: self.moderation_callback(comment) return comment
[docs] def process_vote(self, comment_id, username, value): """Process a user's vote. The web support package relies on the API user to perform authentication. The API user will typically receive a comment_id and value from a form, and then make sure the user is authenticated. A unique username must be passed in, which will also be used to retrieve the user's past voting data. An example, once again in Flask:: @app.route('/docs/process_vote', methods=['POST']) def process_vote(): if g.user is None: abort(401) comment_id = request.form.get('comment_id') value = request.form.get('value') if value is None or comment_id is None: abort(400) support.process_vote(comment_id, g.user.name, value) return "success" :param comment_id: the comment being voted on :param username: the unique username of the user voting :param value: 1 for an upvote, -1 for a downvote, 0 for an unvote. """ value = int(value) if not -1 <= value <= 1: raise ValueError('vote value %s out of range (-1, 1)' % value) self.storage.process_vote(comment_id, username, value)
def update_username(self, old_username, new_username): """To remain decoupled from a webapp's authentication system, the web support package stores a user's username with each of their comments and votes. If the authentication system allows a user to change their username, this can lead to stagnate data in the web support system. To avoid this, each time a username is changed, this method should be called. :param old_username: The original username. :param new_username: The new username. """ self.storage.update_username(old_username, new_username) def accept_comment(self, comment_id, moderator=False): """Accept a comment that is pending moderation. This raises :class:`~sphinxcontrib.websupport.errors.UserNotAuthorizedError` if moderator is False. :param comment_id: The id of the comment that was accepted. :param moderator: Whether the user making the request is a moderator. """ if not moderator: raise errors.UserNotAuthorizedError() self.storage.accept_comment(comment_id) def _make_base_comment_options(self): """Helper method to create the part of the COMMENT_OPTIONS javascript that remains the same throughout the lifetime of the :class:`~sphinxcontrib.websupport.WebSupport` object. """ self.base_comment_opts = {} # type: Dict[unicode, unicode] if self.docroot != '': comment_urls = [ ('addCommentURL', '_add_comment'), ('getCommentsURL', '_get_comments'), ('processVoteURL', '_process_vote'), ('acceptCommentURL', '_accept_comment'), ('deleteCommentURL', '_delete_comment') ] for key, value in comment_urls: self.base_comment_opts[key] = \ '/' + posixpath.join(self.docroot, value) if self.staticroot != 'static': static_urls = [ ('commentImage', 'comment.png'), ('closeCommentImage', 'comment-close.png'), ('loadingImage', 'ajax-loader.gif'), ('commentBrightImage', 'comment-bright.png'), ('upArrow', 'up.png'), ('upArrowPressed', 'up-pressed.png'), ('downArrow', 'down.png'), ('downArrowPressed', 'down-pressed.png') ] for key, value in static_urls: self.base_comment_opts[key] = \ '/' + posixpath.join(self.staticroot, '_static', value) def _make_comment_options(self, username, moderator): """Helper method to create the parts of the COMMENT_OPTIONS javascript that are unique to each request. :param username: The username of the user making the request. :param moderator: Whether the user making the request is a moderator. """ rv = self.base_comment_opts.copy() if username: rv.update({ 'voting': True, 'username': username, 'moderator': moderator, }) return '''\ <script type="text/javascript"> var COMMENT_OPTIONS = %s; </script> ''' % dump_json(rv) def _make_metadata(self, data): return '''\ <script type="text/javascript"> var COMMENT_METADATA = %s; </script> ''' % dump_json(data) def _parse_comment_text(self, text): settings = {'file_insertion_enabled': False, 'raw_enabled': False, 'output_encoding': 'unicode'} try: ret = publish_parts(text, writer_name='html', settings_overrides=settings)['fragment'] except Exception: ret = htmlescape(text) return ret