Varia's website
https://varia.zone
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
271 lines
11 KiB
271 lines
11 KiB
1 week ago
|
import logging
|
||
|
|
import os
|
||
|
|
from posixpath import join as posix_join
|
||
|
|
from urllib.parse import urljoin
|
||
|
|
|
||
|
|
from feedgenerator import Atom1Feed, Rss201rev2Feed, get_tag_uri
|
||
|
|
|
||
|
|
from jinja2 import Markup
|
||
|
|
|
||
|
|
from pelican.paginator import Paginator
|
||
|
|
from pelican.plugins import signals
|
||
|
|
from pelican.utils import (get_relative_path, is_selected_for_writing,
|
||
|
|
path_to_url, sanitised_join, set_date_tzinfo)
|
||
|
|
|
||
|
|
logger = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
|
||
|
|
class Writer:
|
||
|
|
|
||
|
|
def __init__(self, output_path, settings=None):
|
||
|
|
self.output_path = output_path
|
||
|
|
self.reminder = dict()
|
||
|
|
self.settings = settings or {}
|
||
|
|
self._written_files = set()
|
||
|
|
self._overridden_files = set()
|
||
|
|
|
||
|
|
# See Content._link_replacer for details
|
||
|
|
if self.settings['RELATIVE_URLS']:
|
||
|
|
self.urljoiner = posix_join
|
||
|
|
else:
|
||
|
|
self.urljoiner = lambda base, url: urljoin(
|
||
|
|
base if base.endswith('/') else base + '/', url)
|
||
|
|
|
||
|
|
def _create_new_feed(self, feed_type, feed_title, context):
|
||
|
|
feed_class = Rss201rev2Feed if feed_type == 'rss' else Atom1Feed
|
||
|
|
if feed_title:
|
||
|
|
feed_title = context['SITENAME'] + ' - ' + feed_title
|
||
|
|
else:
|
||
|
|
feed_title = context['SITENAME']
|
||
|
|
feed = feed_class(
|
||
|
|
title=Markup(feed_title).striptags(),
|
||
|
|
link=(self.site_url + '/'),
|
||
|
|
feed_url=self.feed_url,
|
||
|
|
description=context.get('SITESUBTITLE', ''),
|
||
|
|
subtitle=context.get('SITESUBTITLE', None))
|
||
|
|
return feed
|
||
|
|
|
||
|
|
def _add_item_to_the_feed(self, feed, item):
|
||
|
|
title = Markup(item.title).striptags()
|
||
|
|
link = self.urljoiner(self.site_url, item.url)
|
||
|
|
|
||
|
|
if isinstance(feed, Rss201rev2Feed):
|
||
|
|
# RSS feeds use a single tag called 'description' for both the full
|
||
|
|
# content and the summary
|
||
|
|
content = None
|
||
|
|
if self.settings.get('RSS_FEED_SUMMARY_ONLY'):
|
||
|
|
description = item.summary
|
||
|
|
else:
|
||
|
|
description = item.get_content(self.site_url)
|
||
|
|
|
||
|
|
else:
|
||
|
|
# Atom feeds have two different tags for full content (called
|
||
|
|
# 'content' by feedgenerator) and summary (called 'description' by
|
||
|
|
# feedgenerator).
|
||
|
|
#
|
||
|
|
# It does not make sense to have the summary be the
|
||
|
|
# exact same thing as the full content. If we detect that
|
||
|
|
# they are we just remove the summary.
|
||
|
|
content = item.get_content(self.site_url)
|
||
|
|
description = item.summary
|
||
|
|
if description == content:
|
||
|
|
description = None
|
||
|
|
|
||
|
|
categories = list()
|
||
|
|
if hasattr(item, 'category'):
|
||
|
|
categories.append(item.category)
|
||
|
|
if hasattr(item, 'tags'):
|
||
|
|
categories.extend(item.tags)
|
||
|
|
|
||
|
|
feed.add_item(
|
||
|
|
title=title,
|
||
|
|
link=link,
|
||
|
|
unique_id=get_tag_uri(link, item.date),
|
||
|
|
description=description,
|
||
|
|
content=content,
|
||
|
|
categories=categories if categories else None,
|
||
|
|
author_name=getattr(item, 'author', ''),
|
||
|
|
pubdate=set_date_tzinfo(
|
||
|
|
item.date, self.settings.get('TIMEZONE', None)),
|
||
|
|
updateddate=set_date_tzinfo(
|
||
|
|
item.modified, self.settings.get('TIMEZONE', None)
|
||
|
|
) if hasattr(item, 'modified') else None)
|
||
|
|
|
||
|
|
def _open_w(self, filename, encoding, override=False):
|
||
|
|
"""Open a file to write some content to it.
|
||
|
|
|
||
|
|
Exit if we have already written to that file, unless one (and no more
|
||
|
|
than one) of the writes has the override parameter set to True.
|
||
|
|
"""
|
||
|
|
if filename in self._overridden_files:
|
||
|
|
if override:
|
||
|
|
raise RuntimeError('File %s is set to be overridden twice'
|
||
|
|
% filename)
|
||
|
|
else:
|
||
|
|
logger.info('Skipping %s', filename)
|
||
|
|
filename = os.devnull
|
||
|
|
elif filename in self._written_files:
|
||
|
|
if override:
|
||
|
|
logger.info('Overwriting %s', filename)
|
||
|
|
else:
|
||
|
|
raise RuntimeError('File %s is to be overwritten' % filename)
|
||
|
|
if override:
|
||
|
|
self._overridden_files.add(filename)
|
||
|
|
self._written_files.add(filename)
|
||
|
|
return open(filename, 'w', encoding=encoding)
|
||
|
|
|
||
|
|
def write_feed(self, elements, context, path=None, url=None,
|
||
|
|
feed_type='atom', override_output=False, feed_title=None):
|
||
|
|
"""Generate a feed with the list of articles provided
|
||
|
|
|
||
|
|
Return the feed. If no path or output_path is specified, just
|
||
|
|
return the feed object.
|
||
|
|
|
||
|
|
:param elements: the articles to put on the feed.
|
||
|
|
:param context: the context to get the feed metadata.
|
||
|
|
:param path: the path to output.
|
||
|
|
:param url: the publicly visible feed URL; if None, path is used
|
||
|
|
instead
|
||
|
|
:param feed_type: the feed type to use (atom or rss)
|
||
|
|
:param override_output: boolean telling if we can override previous
|
||
|
|
output with the same name (and if next files written with the same
|
||
|
|
name should be skipped to keep that one)
|
||
|
|
:param feed_title: the title of the feed.o
|
||
|
|
"""
|
||
|
|
if not is_selected_for_writing(self.settings, path):
|
||
|
|
return
|
||
|
|
|
||
|
|
self.site_url = context.get(
|
||
|
|
'SITEURL', path_to_url(get_relative_path(path)))
|
||
|
|
|
||
|
|
self.feed_domain = context.get('FEED_DOMAIN')
|
||
|
|
self.feed_url = self.urljoiner(self.feed_domain, url if url else path)
|
||
|
|
|
||
|
|
feed = self._create_new_feed(feed_type, feed_title, context)
|
||
|
|
|
||
|
|
max_items = len(elements)
|
||
|
|
if self.settings['FEED_MAX_ITEMS']:
|
||
|
|
max_items = min(self.settings['FEED_MAX_ITEMS'], max_items)
|
||
|
|
for i in range(max_items):
|
||
|
|
self._add_item_to_the_feed(feed, elements[i])
|
||
|
|
|
||
|
|
signals.feed_generated.send(context, feed=feed)
|
||
|
|
if path:
|
||
|
|
complete_path = sanitised_join(self.output_path, path)
|
||
|
|
|
||
|
|
try:
|
||
|
|
os.makedirs(os.path.dirname(complete_path))
|
||
|
|
except Exception:
|
||
|
|
pass
|
||
|
|
|
||
|
|
with self._open_w(complete_path, 'utf-8', override_output) as fp:
|
||
|
|
feed.write(fp, 'utf-8')
|
||
|
|
logger.info('Writing %s', complete_path)
|
||
|
|
|
||
|
|
signals.feed_written.send(
|
||
|
|
complete_path, context=context, feed=feed)
|
||
|
|
return feed
|
||
|
|
|
||
|
|
def write_file(self, name, template, context, relative_urls=False,
|
||
|
|
paginated=None, template_name=None, override_output=False,
|
||
|
|
url=None, **kwargs):
|
||
|
|
"""Render the template and write the file.
|
||
|
|
|
||
|
|
:param name: name of the file to output
|
||
|
|
:param template: template to use to generate the content
|
||
|
|
:param context: dict to pass to the templates.
|
||
|
|
:param relative_urls: use relative urls or absolutes ones
|
||
|
|
:param paginated: dict of article list to paginate - must have the
|
||
|
|
same length (same list in different orders)
|
||
|
|
:param template_name: the template name, for pagination
|
||
|
|
:param override_output: boolean telling if we can override previous
|
||
|
|
output with the same name (and if next files written with the same
|
||
|
|
name should be skipped to keep that one)
|
||
|
|
:param url: url of the file (needed by the paginator)
|
||
|
|
:param **kwargs: additional variables to pass to the templates
|
||
|
|
"""
|
||
|
|
|
||
|
|
if name is False or \
|
||
|
|
name == "" or \
|
||
|
|
not is_selected_for_writing(self.settings,
|
||
|
|
os.path.join(self.output_path, name)):
|
||
|
|
return
|
||
|
|
elif not name:
|
||
|
|
# other stuff, just return for now
|
||
|
|
return
|
||
|
|
|
||
|
|
def _write_file(template, localcontext, output_path, name, override):
|
||
|
|
"""Render the template write the file."""
|
||
|
|
# set localsiteurl for context so that Contents can adjust links
|
||
|
|
if localcontext['localsiteurl']:
|
||
|
|
context['localsiteurl'] = localcontext['localsiteurl']
|
||
|
|
output = template.render(localcontext)
|
||
|
|
path = sanitised_join(output_path, name)
|
||
|
|
|
||
|
|
try:
|
||
|
|
os.makedirs(os.path.dirname(path))
|
||
|
|
except Exception:
|
||
|
|
pass
|
||
|
|
|
||
|
|
with self._open_w(path, 'utf-8', override=override) as f:
|
||
|
|
f.write(output)
|
||
|
|
logger.info('Writing %s', path)
|
||
|
|
|
||
|
|
# Send a signal to say we're writing a file with some specific
|
||
|
|
# local context.
|
||
|
|
signals.content_written.send(path, context=localcontext)
|
||
|
|
|
||
|
|
def _get_localcontext(context, name, kwargs, relative_urls):
|
||
|
|
localcontext = context.copy()
|
||
|
|
localcontext['localsiteurl'] = localcontext.get(
|
||
|
|
'localsiteurl', None)
|
||
|
|
if relative_urls:
|
||
|
|
relative_url = path_to_url(get_relative_path(name))
|
||
|
|
localcontext['SITEURL'] = relative_url
|
||
|
|
localcontext['localsiteurl'] = relative_url
|
||
|
|
localcontext['output_file'] = name
|
||
|
|
localcontext.update(kwargs)
|
||
|
|
return localcontext
|
||
|
|
|
||
|
|
if paginated is None:
|
||
|
|
paginated = {key: val for key, val in kwargs.items()
|
||
|
|
if key in {'articles', 'dates'}}
|
||
|
|
|
||
|
|
# pagination
|
||
|
|
if paginated and template_name in self.settings['PAGINATED_TEMPLATES']:
|
||
|
|
# pagination needed
|
||
|
|
per_page = self.settings['PAGINATED_TEMPLATES'][template_name] \
|
||
|
|
or self.settings['DEFAULT_PAGINATION']
|
||
|
|
|
||
|
|
# init paginators
|
||
|
|
paginators = {key: Paginator(name, url, val, self.settings,
|
||
|
|
per_page)
|
||
|
|
for key, val in paginated.items()}
|
||
|
|
|
||
|
|
# generated pages, and write
|
||
|
|
for page_num in range(list(paginators.values())[0].num_pages):
|
||
|
|
paginated_kwargs = kwargs.copy()
|
||
|
|
for key in paginators.keys():
|
||
|
|
paginator = paginators[key]
|
||
|
|
previous_page = paginator.page(page_num) \
|
||
|
|
if page_num > 0 else None
|
||
|
|
page = paginator.page(page_num + 1)
|
||
|
|
next_page = paginator.page(page_num + 2) \
|
||
|
|
if page_num + 1 < paginator.num_pages else None
|
||
|
|
paginated_kwargs.update(
|
||
|
|
{'%s_paginator' % key: paginator,
|
||
|
|
'%s_page' % key: page,
|
||
|
|
'%s_previous_page' % key: previous_page,
|
||
|
|
'%s_next_page' % key: next_page})
|
||
|
|
|
||
|
|
localcontext = _get_localcontext(
|
||
|
|
context, page.save_as, paginated_kwargs, relative_urls)
|
||
|
|
_write_file(template, localcontext, self.output_path,
|
||
|
|
page.save_as, override_output)
|
||
|
|
else:
|
||
|
|
# no pagination
|
||
|
|
localcontext = _get_localcontext(
|
||
|
|
context, name, kwargs, relative_urls)
|
||
|
|
_write_file(template, localcontext, self.output_path, name,
|
||
|
|
override_output)
|