forked from github/pelican
76fa457654
This adds the lstrip_blocks Jinja parameter and removes unnecessary whitespace from a few notmyidea templates. Note: The lstrip_blocks parameter requires Jinja 2.7+, which has been noted in Pelican's setup.py. Credit for this commit goes entirely to Russ Webber, who has earned my eternal thanks for discovering and applying this useful Jinja parameter. Refs #969
640 lines
25 KiB
Python
640 lines
25 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals, print_function
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import os
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import math
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import random
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import logging
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import shutil
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from codecs import open
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from collections import defaultdict
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from functools import partial
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from itertools import chain, groupby
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from operator import attrgetter, itemgetter
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from jinja2 import (
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Environment, FileSystemLoader, PrefixLoader, ChoiceLoader, BaseLoader,
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TemplateNotFound
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)
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from pelican.contents import Article, Page, Static, is_valid_content
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from pelican.readers import read_file
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from pelican.utils import copy, process_translations, mkdir_p, DateFormatter
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from pelican import signals
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import pelican.utils
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logger = logging.getLogger(__name__)
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class Generator(object):
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"""Baseclass generator"""
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def __init__(self, context, settings, path, theme, output_path, markup,
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**kwargs):
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self.context = context
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self.settings = settings
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self.path = path
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self.theme = theme
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self.output_path = output_path
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self.markup = markup
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for arg, value in kwargs.items():
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setattr(self, arg, value)
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# templates cache
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self._templates = {}
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self._templates_path = []
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self._templates_path.append(os.path.expanduser(
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os.path.join(self.theme, 'templates')))
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self._templates_path += self.settings['EXTRA_TEMPLATES_PATHS']
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theme_path = os.path.dirname(os.path.abspath(__file__))
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simple_loader = FileSystemLoader(os.path.join(theme_path,
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"themes", "simple", "templates"))
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self.env = Environment(
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trim_blocks=True,
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lstrip_blocks=True,
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loader=ChoiceLoader([
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FileSystemLoader(self._templates_path),
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simple_loader, # implicit inheritance
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PrefixLoader({'!simple': simple_loader}) # explicit one
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]),
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extensions=self.settings['JINJA_EXTENSIONS'],
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)
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logger.debug('template list: {0}'.format(self.env.list_templates()))
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# provide utils.strftime as a jinja filter
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self.env.filters.update({'strftime': DateFormatter()})
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# get custom Jinja filters from user settings
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custom_filters = self.settings['JINJA_FILTERS']
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self.env.filters.update(custom_filters)
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signals.generator_init.send(self)
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def get_template(self, name):
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"""Return the template by name.
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Use self.theme to get the templates to use, and return a list of
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templates ready to use with Jinja2.
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"""
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if name not in self._templates:
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try:
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self._templates[name] = self.env.get_template(name + '.html')
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except TemplateNotFound:
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raise Exception(
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('[templates] unable to load %s.html from %s'
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% (name, self._templates_path)))
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return self._templates[name]
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def _include_path(self, path, extensions=None):
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"""Inclusion logic for .get_files(), returns True/False
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:param path: the path which might be including
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:param extensions: the list of allowed extensions (if False, all
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extensions are allowed)
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"""
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if extensions is None:
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extensions = tuple(self.markup)
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basename = os.path.basename(path)
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if extensions is False or basename.endswith(extensions):
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return True
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return False
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def get_files(self, path, exclude=[], extensions=None):
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"""Return a list of files to use, based on rules
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:param path: the path to search (relative to self.path)
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:param exclude: the list of path to exclude
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:param extensions: the list of allowed extensions (if False, all
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extensions are allowed)
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"""
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files = []
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root = os.path.join(self.path, path)
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if os.path.isdir(root):
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for dirpath, dirs, temp_files in os.walk(root, followlinks=True):
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for e in exclude:
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if e in dirs:
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dirs.remove(e)
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reldir = os.path.relpath(dirpath, self.path)
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for f in temp_files:
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fp = os.path.join(reldir, f)
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if self._include_path(fp, extensions):
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files.append(fp)
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elif os.path.exists(root) and self._include_path(path, extensions):
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files.append(path) # can't walk non-directories
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return files
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def add_source_path(self, content):
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location = content.get_relative_source_path()
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self.context['filenames'][location] = content
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def _update_context(self, items):
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"""Update the context with the given items from the currrent
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processor.
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"""
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for item in items:
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value = getattr(self, item)
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if hasattr(value, 'items'):
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value = list(value.items()) # py3k safeguard for iterators
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self.context[item] = value
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class _FileLoader(BaseLoader):
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def __init__(self, path, basedir):
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self.path = path
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self.fullpath = os.path.join(basedir, path)
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def get_source(self, environment, template):
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if template != self.path or not os.path.exists(self.fullpath):
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raise TemplateNotFound(template)
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mtime = os.path.getmtime(self.fullpath)
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with open(self.fullpath, 'r', encoding='utf-8') as f:
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source = f.read()
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return (source, self.fullpath,
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lambda: mtime == os.path.getmtime(self.fullpath))
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class TemplatePagesGenerator(Generator):
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def generate_output(self, writer):
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for source, dest in self.settings['TEMPLATE_PAGES'].items():
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self.env.loader.loaders.insert(0, _FileLoader(source, self.path))
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try:
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template = self.env.get_template(source)
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rurls = self.settings['RELATIVE_URLS']
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writer.write_file(dest, template, self.context, rurls)
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finally:
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del self.env.loader.loaders[0]
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class ArticlesGenerator(Generator):
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"""Generate blog articles"""
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def __init__(self, *args, **kwargs):
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"""initialize properties"""
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self.articles = [] # only articles in default language
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self.translations = []
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self.dates = {}
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self.tags = defaultdict(list)
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self.categories = defaultdict(list)
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self.related_posts = []
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self.authors = defaultdict(list)
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self.drafts = []
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super(ArticlesGenerator, self).__init__(*args, **kwargs)
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signals.article_generator_init.send(self)
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def generate_feeds(self, writer):
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"""Generate the feeds from the current context, and output files."""
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if self.settings.get('FEED_ATOM'):
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writer.write_feed(self.articles, self.context,
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self.settings['FEED_ATOM'])
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if self.settings.get('FEED_RSS'):
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writer.write_feed(self.articles, self.context,
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self.settings['FEED_RSS'], feed_type='rss')
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if (self.settings.get('FEED_ALL_ATOM')
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or self.settings.get('FEED_ALL_RSS')):
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all_articles = list(self.articles)
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for article in self.articles:
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all_articles.extend(article.translations)
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all_articles.sort(key=attrgetter('date'), reverse=True)
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if self.settings.get('FEED_ALL_ATOM'):
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writer.write_feed(all_articles, self.context,
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self.settings['FEED_ALL_ATOM'])
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if self.settings.get('FEED_ALL_RSS'):
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writer.write_feed(all_articles, self.context,
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self.settings['FEED_ALL_RSS'],
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feed_type='rss')
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for cat, arts in self.categories:
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arts.sort(key=attrgetter('date'), reverse=True)
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if self.settings.get('CATEGORY_FEED_ATOM'):
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writer.write_feed(arts, self.context,
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self.settings['CATEGORY_FEED_ATOM']
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% cat.slug)
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if self.settings.get('CATEGORY_FEED_RSS'):
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writer.write_feed(arts, self.context,
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self.settings['CATEGORY_FEED_RSS']
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% cat.slug, feed_type='rss')
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if (self.settings.get('TAG_FEED_ATOM')
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or self.settings.get('TAG_FEED_RSS')):
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for tag, arts in self.tags.items():
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arts.sort(key=attrgetter('date'), reverse=True)
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if self.settings.get('TAG_FEED_ATOM'):
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writer.write_feed(arts, self.context,
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self.settings['TAG_FEED_ATOM']
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% tag.slug)
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if self.settings.get('TAG_FEED_RSS'):
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writer.write_feed(arts, self.context,
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self.settings['TAG_FEED_RSS'] % tag.slug,
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feed_type='rss')
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if (self.settings.get('TRANSLATION_FEED_ATOM')
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or self.settings.get('TRANSLATION_FEED_RSS')):
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translations_feeds = defaultdict(list)
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for article in chain(self.articles, self.translations):
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translations_feeds[article.lang].append(article)
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for lang, items in translations_feeds.items():
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items.sort(key=attrgetter('date'), reverse=True)
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if self.settings.get('TRANSLATION_FEED_ATOM'):
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writer.write_feed(items, self.context,
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self.settings['TRANSLATION_FEED_ATOM'] % lang)
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if self.settings.get('TRANSLATION_FEED_RSS'):
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writer.write_feed(items, self.context,
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self.settings['TRANSLATION_FEED_RSS'] % lang,
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feed_type='rss')
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def generate_articles(self, write):
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"""Generate the articles."""
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for article in chain(self.translations, self.articles):
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write(article.save_as, self.get_template(article.template),
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self.context, article=article, category=article.category)
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def generate_period_archives(self, write):
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"""Generate per-year, per-month, and per-day archives."""
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try:
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template = self.get_template('period_archives')
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except Exception:
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template = self.get_template('archives')
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def _generate_period_archives(dates, key, save_as_fmt):
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"""Generate period archives from `dates`, grouped by
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`key` and written to `save_as`.
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"""
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# `dates` is already sorted by date
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for _period, group in groupby(dates, key=key):
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archive = list(group)
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# arbitrarily grab the first date so that the usual
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# format string syntax can be used for specifying the
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# period archive dates
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date = archive[0].date
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save_as = save_as_fmt.format(date=date)
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write(save_as, template, self.context,
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dates=archive, blog=True)
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period_save_as = {
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'year' : self.settings['YEAR_ARCHIVE_SAVE_AS'],
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'month': self.settings['MONTH_ARCHIVE_SAVE_AS'],
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'day' : self.settings['DAY_ARCHIVE_SAVE_AS'],
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}
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period_date_key = {
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'year' : attrgetter('date.year'),
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'month': attrgetter('date.year', 'date.month'),
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'day' : attrgetter('date.year', 'date.month', 'date.day')
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}
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for period in 'year', 'month', 'day':
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save_as = period_save_as[period]
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if save_as:
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key = period_date_key[period]
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_generate_period_archives(self.dates, key, save_as)
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def generate_direct_templates(self, write):
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"""Generate direct templates pages"""
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PAGINATED_TEMPLATES = self.settings['PAGINATED_DIRECT_TEMPLATES']
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for template in self.settings['DIRECT_TEMPLATES']:
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paginated = {}
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if template in PAGINATED_TEMPLATES:
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paginated = {'articles': self.articles, 'dates': self.dates}
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save_as = self.settings.get("%s_SAVE_AS" % template.upper(),
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'%s.html' % template)
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if not save_as:
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continue
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write(save_as, self.get_template(template),
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self.context, blog=True, paginated=paginated,
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page_name=os.path.splitext(save_as)[0])
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def generate_tags(self, write):
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"""Generate Tags pages."""
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tag_template = self.get_template('tag')
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for tag, articles in self.tags.items():
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articles.sort(key=attrgetter('date'), reverse=True)
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dates = [article for article in self.dates if article in articles]
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write(tag.save_as, tag_template, self.context, tag=tag,
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articles=articles, dates=dates,
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paginated={'articles': articles, 'dates': dates},
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page_name=tag.page_name, all_articles=self.articles)
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def generate_categories(self, write):
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"""Generate category pages."""
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category_template = self.get_template('category')
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for cat, articles in self.categories:
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dates = [article for article in self.dates if article in articles]
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write(cat.save_as, category_template, self.context,
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category=cat, articles=articles, dates=dates,
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paginated={'articles': articles, 'dates': dates},
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page_name=cat.page_name, all_articles=self.articles)
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def generate_authors(self, write):
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"""Generate Author pages."""
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author_template = self.get_template('author')
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for aut, articles in self.authors:
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dates = [article for article in self.dates if article in articles]
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write(aut.save_as, author_template, self.context,
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author=aut, articles=articles, dates=dates,
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paginated={'articles': articles, 'dates': dates},
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page_name=aut.page_name, all_articles=self.articles)
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def generate_drafts(self, write):
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"""Generate drafts pages."""
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for article in self.drafts:
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write(os.path.join('drafts', '%s.html' % article.slug),
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self.get_template(article.template), self.context,
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article=article, category=article.category,
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all_articles=self.articles)
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def generate_pages(self, writer):
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"""Generate the pages on the disk"""
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write = partial(writer.write_file,
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relative_urls=self.settings['RELATIVE_URLS'])
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# to minimize the number of relative path stuff modification
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# in writer, articles pass first
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self.generate_articles(write)
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self.generate_period_archives(write)
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self.generate_direct_templates(write)
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# and subfolders after that
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self.generate_tags(write)
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self.generate_categories(write)
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self.generate_authors(write)
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self.generate_drafts(write)
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def generate_context(self):
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"""Add the articles into the shared context"""
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all_articles = []
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for f in self.get_files(
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self.settings['ARTICLE_DIR'],
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exclude=self.settings['ARTICLE_EXCLUDES']):
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try:
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article = read_file(
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base_path=self.path, path=f, content_class=Article,
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settings=self.settings, context=self.context,
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preread_signal=signals.article_generator_preread,
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preread_sender=self,
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context_signal=signals.article_generator_context,
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context_sender=self)
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except Exception as e:
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logger.warning('Could not process {}\n{}'.format(f, e))
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continue
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if not is_valid_content(article, f):
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continue
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self.add_source_path(article)
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if article.status == "published":
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all_articles.append(article)
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elif article.status == "draft":
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self.drafts.append(article)
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else:
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logger.warning("Unknown status %s for file %s, skipping it." %
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(repr(article.status),
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repr(f)))
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self.articles, self.translations = process_translations(all_articles)
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for article in self.articles:
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# only main articles are listed in categories and tags
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# not translations
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self.categories[article.category].append(article)
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if hasattr(article, 'tags'):
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for tag in article.tags:
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self.tags[tag].append(article)
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# ignore blank authors as well as undefined
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if hasattr(article, 'author') and article.author.name != '':
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self.authors[article.author].append(article)
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# sort the articles by date
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self.articles.sort(key=attrgetter('date'), reverse=True)
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self.dates = list(self.articles)
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self.dates.sort(key=attrgetter('date'),
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reverse=self.context['NEWEST_FIRST_ARCHIVES'])
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# create tag cloud
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tag_cloud = defaultdict(int)
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for article in self.articles:
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for tag in getattr(article, 'tags', []):
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tag_cloud[tag] += 1
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tag_cloud = sorted(tag_cloud.items(), key=itemgetter(1), reverse=True)
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tag_cloud = tag_cloud[:self.settings.get('TAG_CLOUD_MAX_ITEMS')]
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tags = list(map(itemgetter(1), tag_cloud))
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if tags:
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max_count = max(tags)
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steps = self.settings.get('TAG_CLOUD_STEPS')
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# calculate word sizes
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self.tag_cloud = [
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(
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tag,
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int(math.floor(steps - (steps - 1) * math.log(count)
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/ (math.log(max_count)or 1)))
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)
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for tag, count in tag_cloud
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]
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# put words in chaos
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random.shuffle(self.tag_cloud)
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# and generate the output :)
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# order the categories per name
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self.categories = list(self.categories.items())
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self.categories.sort(
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reverse=self.settings['REVERSE_CATEGORY_ORDER'])
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self.authors = list(self.authors.items())
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self.authors.sort()
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self._update_context(('articles', 'dates', 'tags', 'categories',
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'tag_cloud', 'authors', 'related_posts'))
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signals.article_generator_finalized.send(self)
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def generate_output(self, writer):
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self.generate_feeds(writer)
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self.generate_pages(writer)
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class PagesGenerator(Generator):
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"""Generate pages"""
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def __init__(self, *args, **kwargs):
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self.pages = []
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self.hidden_pages = []
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self.hidden_translations = []
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super(PagesGenerator, self).__init__(*args, **kwargs)
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signals.page_generator_init.send(self)
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def generate_context(self):
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all_pages = []
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hidden_pages = []
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for f in self.get_files(
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self.settings['PAGE_DIR'],
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exclude=self.settings['PAGE_EXCLUDES']):
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try:
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page = read_file(
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base_path=self.path, path=f, content_class=Page,
|
|
settings=self.settings, context=self.context,
|
|
preread_signal=signals.page_generator_preread,
|
|
preread_sender=self,
|
|
context_signal=signals.page_generator_context,
|
|
context_sender=self)
|
|
except Exception as e:
|
|
logger.warning('Could not process {}\n{}'.format(f, e))
|
|
continue
|
|
|
|
if not is_valid_content(page, f):
|
|
continue
|
|
|
|
self.add_source_path(page)
|
|
|
|
if page.status == "published":
|
|
all_pages.append(page)
|
|
elif page.status == "hidden":
|
|
hidden_pages.append(page)
|
|
else:
|
|
logger.warning("Unknown status %s for file %s, skipping it." %
|
|
(repr(page.status),
|
|
repr(f)))
|
|
|
|
self.pages, self.translations = process_translations(all_pages)
|
|
self.hidden_pages, self.hidden_translations = (
|
|
process_translations(hidden_pages))
|
|
|
|
self._update_context(('pages', ))
|
|
self.context['PAGES'] = self.pages
|
|
|
|
signals.page_generator_finalized.send(self)
|
|
|
|
def generate_output(self, writer):
|
|
for page in chain(self.translations, self.pages,
|
|
self.hidden_translations, self.hidden_pages):
|
|
writer.write_file(page.save_as, self.get_template(page.template),
|
|
self.context, page=page,
|
|
relative_urls=self.settings['RELATIVE_URLS'])
|
|
|
|
|
|
class StaticGenerator(Generator):
|
|
"""copy static paths (what you want to copy, like images, medias etc.
|
|
to output"""
|
|
|
|
def _copy_paths(self, paths, source, destination, output_path,
|
|
final_path=None):
|
|
"""Copy all the paths from source to destination"""
|
|
for path in paths:
|
|
copy(path, source, os.path.join(output_path, destination),
|
|
final_path, overwrite=True)
|
|
|
|
def generate_context(self):
|
|
self.staticfiles = []
|
|
|
|
# walk static paths
|
|
for static_path in self.settings['STATIC_PATHS']:
|
|
for f in self.get_files(
|
|
static_path, extensions=False):
|
|
static = read_file(
|
|
base_path=self.path, path=f, content_class=Static,
|
|
fmt='static',
|
|
settings=self.settings, context=self.context,
|
|
preread_signal=signals.static_generator_preread,
|
|
preread_sender=self,
|
|
context_signal=signals.static_generator_context,
|
|
context_sender=self)
|
|
self.staticfiles.append(static)
|
|
self.add_source_path(static)
|
|
|
|
def generate_output(self, writer):
|
|
self._copy_paths(self.settings['THEME_STATIC_PATHS'], self.theme,
|
|
self.settings['THEME_STATIC_DIR'], self.output_path,
|
|
os.curdir)
|
|
# copy all Static files
|
|
for sc in self.staticfiles:
|
|
source_path = os.path.join(self.path, sc.source_path)
|
|
save_as = os.path.join(self.output_path, sc.save_as)
|
|
mkdir_p(os.path.dirname(save_as))
|
|
shutil.copy(source_path, save_as)
|
|
logger.info('copying {} to {}'.format(sc.source_path, sc.save_as))
|
|
|
|
|
|
class PdfGenerator(Generator):
|
|
"""Generate PDFs on the output dir, for all articles and pages coming from
|
|
rst"""
|
|
def __init__(self, *args, **kwargs):
|
|
super(PdfGenerator, self).__init__(*args, **kwargs)
|
|
try:
|
|
from rst2pdf.createpdf import RstToPdf
|
|
pdf_style_path = os.path.join(self.settings['PDF_STYLE_PATH'])
|
|
pdf_style = self.settings['PDF_STYLE']
|
|
self.pdfcreator = RstToPdf(breakside=0,
|
|
stylesheets=[pdf_style],
|
|
style_path=[pdf_style_path])
|
|
except ImportError:
|
|
raise Exception("unable to find rst2pdf")
|
|
|
|
def _create_pdf(self, obj, output_path):
|
|
if obj.source_path.endswith('.rst'):
|
|
filename = obj.slug + ".pdf"
|
|
output_pdf = os.path.join(output_path, filename)
|
|
# print('Generating pdf for', obj.source_path, 'in', output_pdf)
|
|
with open(obj.source_path) as f:
|
|
self.pdfcreator.createPdf(text=f.read(), output=output_pdf)
|
|
logger.info(' [ok] writing %s' % output_pdf)
|
|
|
|
def generate_context(self):
|
|
pass
|
|
|
|
def generate_output(self, writer=None):
|
|
# we don't use the writer passed as argument here
|
|
# since we write our own files
|
|
logger.info(' Generating PDF files...')
|
|
pdf_path = os.path.join(self.output_path, 'pdf')
|
|
if not os.path.exists(pdf_path):
|
|
try:
|
|
os.mkdir(pdf_path)
|
|
except OSError:
|
|
logger.error("Couldn't create the pdf output folder in " +
|
|
pdf_path)
|
|
|
|
for article in self.context['articles']:
|
|
self._create_pdf(article, pdf_path)
|
|
|
|
for page in self.context['pages']:
|
|
self._create_pdf(page, pdf_path)
|
|
|
|
|
|
class SourceFileGenerator(Generator):
|
|
def generate_context(self):
|
|
self.output_extension = self.settings['OUTPUT_SOURCES_EXTENSION']
|
|
|
|
def _create_source(self, obj):
|
|
output_path, _ = os.path.splitext(obj.save_as)
|
|
dest = os.path.join(self.output_path,
|
|
output_path + self.output_extension)
|
|
copy('', obj.source_path, dest)
|
|
|
|
def generate_output(self, writer=None):
|
|
logger.info(' Generating source files...')
|
|
for obj in chain(self.context['articles'], self.context['pages']):
|
|
self._create_source(obj)
|
|
for obj_trans in obj.translations:
|
|
self._create_source(obj_trans)
|