Varia's website
https://varia.zone
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626 lines
23 KiB
626 lines
23 KiB
1 week ago
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import copy
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import datetime
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import locale
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import logging
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import os
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import re
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from html import unescape
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from urllib.parse import unquote, urljoin, urlparse, urlunparse
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import pytz
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from pelican.plugins import signals
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from pelican.settings import DEFAULT_CONFIG
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from pelican.utils import (deprecated_attribute, memoized, path_to_url,
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posixize_path, sanitised_join, set_date_tzinfo,
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slugify, truncate_html_words)
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# Import these so that they're avalaible when you import from pelican.contents.
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from pelican.urlwrappers import (Author, Category, Tag, URLWrapper) # NOQA
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logger = logging.getLogger(__name__)
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class Content:
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"""Represents a content.
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:param content: the string to parse, containing the original content.
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:param metadata: the metadata associated to this page (optional).
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:param settings: the settings dictionary (optional).
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:param source_path: The location of the source of this content (if any).
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:param context: The shared context between generators.
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"""
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@deprecated_attribute(old='filename', new='source_path', since=(3, 2, 0))
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def filename():
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return None
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def __init__(self, content, metadata=None, settings=None,
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source_path=None, context=None):
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if metadata is None:
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metadata = {}
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if settings is None:
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settings = copy.deepcopy(DEFAULT_CONFIG)
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self.settings = settings
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self._content = content
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if context is None:
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context = {}
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self._context = context
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self.translations = []
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local_metadata = dict()
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local_metadata.update(metadata)
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# set metadata as attributes
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for key, value in local_metadata.items():
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if key in ('save_as', 'url'):
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key = 'override_' + key
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setattr(self, key.lower(), value)
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# also keep track of the metadata attributes available
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self.metadata = local_metadata
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# default template if it's not defined in page
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self.template = self._get_template()
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# First, read the authors from "authors", if not, fallback to "author"
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# and if not use the settings defined one, if any.
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if not hasattr(self, 'author'):
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if hasattr(self, 'authors'):
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self.author = self.authors[0]
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elif 'AUTHOR' in settings:
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self.author = Author(settings['AUTHOR'], settings)
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if not hasattr(self, 'authors') and hasattr(self, 'author'):
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self.authors = [self.author]
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# XXX Split all the following code into pieces, there is too much here.
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# manage languages
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self.in_default_lang = True
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if 'DEFAULT_LANG' in settings:
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default_lang = settings['DEFAULT_LANG'].lower()
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if not hasattr(self, 'lang'):
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self.lang = default_lang
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self.in_default_lang = (self.lang == default_lang)
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# create the slug if not existing, generate slug according to
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# setting of SLUG_ATTRIBUTE
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if not hasattr(self, 'slug'):
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if (settings['SLUGIFY_SOURCE'] == 'title' and
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hasattr(self, 'title')):
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value = self.title
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elif (settings['SLUGIFY_SOURCE'] == 'basename' and
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source_path is not None):
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value = os.path.basename(os.path.splitext(source_path)[0])
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else:
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value = None
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if value is not None:
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self.slug = slugify(
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value,
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regex_subs=settings.get('SLUG_REGEX_SUBSTITUTIONS', []),
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preserve_case=settings.get('SLUGIFY_PRESERVE_CASE', False),
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use_unicode=settings.get('SLUGIFY_USE_UNICODE', False))
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self.source_path = source_path
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self.relative_source_path = self.get_relative_source_path()
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# manage the date format
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if not hasattr(self, 'date_format'):
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if hasattr(self, 'lang') and self.lang in settings['DATE_FORMATS']:
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self.date_format = settings['DATE_FORMATS'][self.lang]
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else:
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self.date_format = settings['DEFAULT_DATE_FORMAT']
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if isinstance(self.date_format, tuple):
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locale_string = self.date_format[0]
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locale.setlocale(locale.LC_ALL, locale_string)
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self.date_format = self.date_format[1]
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# manage timezone
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default_timezone = settings.get('TIMEZONE', 'UTC')
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timezone = getattr(self, 'timezone', default_timezone)
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self.timezone = pytz.timezone(timezone)
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if hasattr(self, 'date'):
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self.date = set_date_tzinfo(self.date, timezone)
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self.locale_date = self.date.strftime(self.date_format)
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if hasattr(self, 'modified'):
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self.modified = set_date_tzinfo(self.modified, timezone)
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self.locale_modified = self.modified.strftime(self.date_format)
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# manage status
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if not hasattr(self, 'status'):
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# Previous default of None broke comment plugins and perhaps others
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self.status = getattr(self, 'default_status', '')
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# store the summary metadata if it is set
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if 'summary' in metadata:
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self._summary = metadata['summary']
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signals.content_object_init.send(self)
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def __str__(self):
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return self.source_path or repr(self)
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def _has_valid_mandatory_properties(self):
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"""Test mandatory properties are set."""
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for prop in self.mandatory_properties:
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if not hasattr(self, prop):
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logger.error(
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"Skipping %s: could not find information about '%s'",
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self, prop)
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return False
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return True
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def _has_valid_save_as(self):
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"""Return true if save_as doesn't write outside output path, false
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otherwise."""
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try:
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output_path = self.settings["OUTPUT_PATH"]
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except KeyError:
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# we cannot check
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return True
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try:
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sanitised_join(output_path, self.save_as)
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except RuntimeError: # outside output_dir
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logger.error(
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"Skipping %s: file %r would be written outside output path",
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self,
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self.save_as,
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)
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return False
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return True
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def _has_valid_status(self):
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if hasattr(self, 'allowed_statuses'):
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if self.status not in self.allowed_statuses:
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logger.error(
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"Unknown status '%s' for file %s, skipping it.",
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self.status,
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self
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)
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return False
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# if undefined we allow all
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return True
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def is_valid(self):
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"""Validate Content"""
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# Use all() to not short circuit and get results of all validations
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return all([self._has_valid_mandatory_properties(),
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self._has_valid_save_as(),
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self._has_valid_status()])
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@property
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def url_format(self):
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"""Returns the URL, formatted with the proper values"""
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metadata = copy.copy(self.metadata)
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path = self.metadata.get('path', self.get_relative_source_path())
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metadata.update({
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'path': path_to_url(path),
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'slug': getattr(self, 'slug', ''),
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'lang': getattr(self, 'lang', 'en'),
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'date': getattr(self, 'date', datetime.datetime.now()),
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'author': self.author.slug if hasattr(self, 'author') else '',
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'category': self.category.slug if hasattr(self, 'category') else ''
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})
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return metadata
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def _expand_settings(self, key, klass=None):
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if not klass:
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klass = self.__class__.__name__
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fq_key = ('{}_{}'.format(klass, key)).upper()
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return self.settings[fq_key].format(**self.url_format)
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def get_url_setting(self, key):
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if hasattr(self, 'override_' + key):
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return getattr(self, 'override_' + key)
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key = key if self.in_default_lang else 'lang_%s' % key
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return self._expand_settings(key)
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def _link_replacer(self, siteurl, m):
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what = m.group('what')
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value = urlparse(m.group('value'))
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path = value.path
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origin = m.group('path')
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# urllib.parse.urljoin() produces `a.html` for urljoin("..", "a.html")
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# so if RELATIVE_URLS are enabled, we fall back to os.path.join() to
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# properly get `../a.html`. However, os.path.join() produces
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# `baz/http://foo/bar.html` for join("baz", "http://foo/bar.html")
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# instead of correct "http://foo/bar.html", so one has to pick a side
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# as there is no silver bullet.
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if self.settings['RELATIVE_URLS']:
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joiner = os.path.join
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else:
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joiner = urljoin
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# However, it's not *that* simple: urljoin("blog", "index.html")
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# produces just `index.html` instead of `blog/index.html` (unlike
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# os.path.join()), so in order to get a correct answer one needs to
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# append a trailing slash to siteurl in that case. This also makes
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# the new behavior fully compatible with Pelican 3.7.1.
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if not siteurl.endswith('/'):
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siteurl += '/'
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# XXX Put this in a different location.
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if what in {'filename', 'static', 'attach'}:
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def _get_linked_content(key, url):
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nonlocal value
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def _find_path(path):
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if path.startswith('/'):
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path = path[1:]
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else:
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# relative to the source path of this content
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path = self.get_relative_source_path(
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os.path.join(self.relative_dir, path)
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)
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return self._context[key].get(path, None)
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# try path
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result = _find_path(url.path)
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if result is not None:
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return result
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# try unquoted path
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result = _find_path(unquote(url.path))
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if result is not None:
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return result
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# try html unescaped url
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unescaped_url = urlparse(unescape(url.geturl()))
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result = _find_path(unescaped_url.path)
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if result is not None:
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value = unescaped_url
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return result
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# check if a static file is linked with {filename}
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if what == 'filename' and key == 'generated_content':
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linked_content = _get_linked_content('static_content', value)
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if linked_content:
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logger.warning(
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'{filename} used for linking to static'
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' content %s in %s. Use {static} instead',
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value.path,
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self.get_relative_source_path())
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return linked_content
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return None
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if what == 'filename':
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key = 'generated_content'
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else:
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key = 'static_content'
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linked_content = _get_linked_content(key, value)
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if linked_content:
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if what == 'attach':
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linked_content.attach_to(self)
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origin = joiner(siteurl, linked_content.url)
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origin = origin.replace('\\', '/') # for Windows paths.
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else:
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logger.warning(
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"Unable to find '%s', skipping url replacement.",
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value.geturl(), extra={
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'limit_msg': ("Other resources were not found "
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"and their urls not replaced")})
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elif what == 'category':
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origin = joiner(siteurl, Category(path, self.settings).url)
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elif what == 'tag':
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origin = joiner(siteurl, Tag(path, self.settings).url)
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elif what == 'index':
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origin = joiner(siteurl, self.settings['INDEX_SAVE_AS'])
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elif what == 'author':
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origin = joiner(siteurl, Author(path, self.settings).url)
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else:
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logger.warning(
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"Replacement Indicator '%s' not recognized, "
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"skipping replacement",
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what)
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# keep all other parts, such as query, fragment, etc.
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parts = list(value)
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parts[2] = origin
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origin = urlunparse(parts)
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return ''.join((m.group('markup'), m.group('quote'), origin,
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m.group('quote')))
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def _get_intrasite_link_regex(self):
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intrasite_link_regex = self.settings['INTRASITE_LINK_REGEX']
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regex = r"""
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(?P<markup><[^\>]+ # match tag with all url-value attributes
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(?:href|src|poster|data|cite|formaction|action)\s*=\s*)
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(?P<quote>["\']) # require value to be quoted
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(?P<path>{}(?P<value>.*?)) # the url value
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\2""".format(intrasite_link_regex)
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return re.compile(regex, re.X)
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def _update_content(self, content, siteurl):
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"""Update the content attribute.
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Change all the relative paths of the content to relative paths
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suitable for the output content.
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:param content: content resource that will be passed to the templates.
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:param siteurl: siteurl which is locally generated by the writer in
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case of RELATIVE_URLS.
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"""
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if not content:
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return content
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hrefs = self._get_intrasite_link_regex()
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return hrefs.sub(lambda m: self._link_replacer(siteurl, m), content)
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def get_static_links(self):
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static_links = set()
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hrefs = self._get_intrasite_link_regex()
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for m in hrefs.finditer(self._content):
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what = m.group('what')
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value = urlparse(m.group('value'))
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path = value.path
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|
if what not in {'static', 'attach'}:
|
||
|
|
continue
|
||
|
|
if path.startswith('/'):
|
||
|
|
path = path[1:]
|
||
|
|
else:
|
||
|
|
# relative to the source path of this content
|
||
|
|
path = self.get_relative_source_path(
|
||
|
|
os.path.join(self.relative_dir, path)
|
||
|
|
)
|
||
|
|
path = path.replace('%20', ' ')
|
||
|
|
static_links.add(path)
|
||
|
|
return static_links
|
||
|
|
|
||
|
|
def get_siteurl(self):
|
||
|
|
return self._context.get('localsiteurl', '')
|
||
|
|
|
||
|
|
@memoized
|
||
|
|
def get_content(self, siteurl):
|
||
|
|
if hasattr(self, '_get_content'):
|
||
|
|
content = self._get_content()
|
||
|
|
else:
|
||
|
|
content = self._content
|
||
|
|
return self._update_content(content, siteurl)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def content(self):
|
||
|
|
return self.get_content(self.get_siteurl())
|
||
|
|
|
||
|
|
@memoized
|
||
|
|
def get_summary(self, siteurl):
|
||
|
|
"""Returns the summary of an article.
|
||
|
|
|
||
|
|
This is based on the summary metadata if set, otherwise truncate the
|
||
|
|
content.
|
||
|
|
"""
|
||
|
|
if 'summary' in self.metadata:
|
||
|
|
return self.metadata['summary']
|
||
|
|
|
||
|
|
if self.settings['SUMMARY_MAX_LENGTH'] is None:
|
||
|
|
return self.content
|
||
|
|
|
||
|
|
return truncate_html_words(self.content,
|
||
|
|
self.settings['SUMMARY_MAX_LENGTH'],
|
||
|
|
self.settings['SUMMARY_END_SUFFIX'])
|
||
|
|
|
||
|
|
@property
|
||
|
|
def summary(self):
|
||
|
|
return self.get_summary(self.get_siteurl())
|
||
|
|
|
||
|
|
def _get_summary(self):
|
||
|
|
"""deprecated function to access summary"""
|
||
|
|
|
||
|
|
logger.warning('_get_summary() has been deprecated since 3.6.4. '
|
||
|
|
'Use the summary decorator instead')
|
||
|
|
return self.summary
|
||
|
|
|
||
|
|
@summary.setter
|
||
|
|
def summary(self, value):
|
||
|
|
"""Dummy function"""
|
||
|
|
pass
|
||
|
|
|
||
|
|
@property
|
||
|
|
def status(self):
|
||
|
|
return self._status
|
||
|
|
|
||
|
|
@status.setter
|
||
|
|
def status(self, value):
|
||
|
|
# TODO maybe typecheck
|
||
|
|
self._status = value.lower()
|
||
|
|
|
||
|
|
@property
|
||
|
|
def url(self):
|
||
|
|
return self.get_url_setting('url')
|
||
|
|
|
||
|
|
@property
|
||
|
|
def save_as(self):
|
||
|
|
return self.get_url_setting('save_as')
|
||
|
|
|
||
|
|
def _get_template(self):
|
||
|
|
if hasattr(self, 'template') and self.template is not None:
|
||
|
|
return self.template
|
||
|
|
else:
|
||
|
|
return self.default_template
|
||
|
|
|
||
|
|
def get_relative_source_path(self, source_path=None):
|
||
|
|
"""Return the relative path (from the content path) to the given
|
||
|
|
source_path.
|
||
|
|
|
||
|
|
If no source path is specified, use the source path of this
|
||
|
|
content object.
|
||
|
|
"""
|
||
|
|
if not source_path:
|
||
|
|
source_path = self.source_path
|
||
|
|
if source_path is None:
|
||
|
|
return None
|
||
|
|
|
||
|
|
return posixize_path(
|
||
|
|
os.path.relpath(
|
||
|
|
os.path.abspath(os.path.join(
|
||
|
|
self.settings['PATH'],
|
||
|
|
source_path)),
|
||
|
|
os.path.abspath(self.settings['PATH'])
|
||
|
|
))
|
||
|
|
|
||
|
|
@property
|
||
|
|
def relative_dir(self):
|
||
|
|
return posixize_path(
|
||
|
|
os.path.dirname(
|
||
|
|
os.path.relpath(
|
||
|
|
os.path.abspath(self.source_path),
|
||
|
|
os.path.abspath(self.settings['PATH']))))
|
||
|
|
|
||
|
|
def refresh_metadata_intersite_links(self):
|
||
|
|
for key in self.settings['FORMATTED_FIELDS']:
|
||
|
|
if key in self.metadata and key != 'summary':
|
||
|
|
value = self._update_content(
|
||
|
|
self.metadata[key],
|
||
|
|
self.get_siteurl()
|
||
|
|
)
|
||
|
|
self.metadata[key] = value
|
||
|
|
setattr(self, key.lower(), value)
|
||
|
|
|
||
|
|
# _summary is an internal variable that some plugins may be writing to,
|
||
|
|
# so ensure changes to it are picked up
|
||
|
|
if ('summary' in self.settings['FORMATTED_FIELDS'] and
|
||
|
|
'summary' in self.metadata):
|
||
|
|
self._summary = self._update_content(
|
||
|
|
self._summary,
|
||
|
|
self.get_siteurl()
|
||
|
|
)
|
||
|
|
self.metadata['summary'] = self._summary
|
||
|
|
|
||
|
|
|
||
|
|
class Page(Content):
|
||
|
|
mandatory_properties = ('title',)
|
||
|
|
allowed_statuses = ('published', 'hidden', 'draft')
|
||
|
|
default_status = 'published'
|
||
|
|
default_template = 'page'
|
||
|
|
|
||
|
|
def _expand_settings(self, key):
|
||
|
|
klass = 'draft_page' if self.status == 'draft' else None
|
||
|
|
return super()._expand_settings(key, klass)
|
||
|
|
|
||
|
|
|
||
|
|
class Article(Content):
|
||
|
|
mandatory_properties = ('title', 'date', 'category')
|
||
|
|
allowed_statuses = ('published', 'draft')
|
||
|
|
default_status = 'published'
|
||
|
|
default_template = 'article'
|
||
|
|
|
||
|
|
def __init__(self, *args, **kwargs):
|
||
|
|
super().__init__(*args, **kwargs)
|
||
|
|
|
||
|
|
# handle WITH_FUTURE_DATES (designate article to draft based on date)
|
||
|
|
if not self.settings['WITH_FUTURE_DATES'] and hasattr(self, 'date'):
|
||
|
|
if self.date.tzinfo is None:
|
||
|
|
now = datetime.datetime.now()
|
||
|
|
else:
|
||
|
|
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
|
||
|
|
if self.date > now:
|
||
|
|
self.status = 'draft'
|
||
|
|
|
||
|
|
# if we are a draft and there is no date provided, set max datetime
|
||
|
|
if not hasattr(self, 'date') and self.status == 'draft':
|
||
|
|
self.date = datetime.datetime.max.replace(tzinfo=self.timezone)
|
||
|
|
|
||
|
|
def _expand_settings(self, key):
|
||
|
|
klass = 'draft' if self.status == 'draft' else 'article'
|
||
|
|
return super()._expand_settings(key, klass)
|
||
|
|
|
||
|
|
|
||
|
|
class Static(Content):
|
||
|
|
mandatory_properties = ('title',)
|
||
|
|
default_status = 'published'
|
||
|
|
default_template = None
|
||
|
|
|
||
|
|
def __init__(self, *args, **kwargs):
|
||
|
|
super().__init__(*args, **kwargs)
|
||
|
|
self._output_location_referenced = False
|
||
|
|
|
||
|
|
@deprecated_attribute(old='filepath', new='source_path', since=(3, 2, 0))
|
||
|
|
def filepath():
|
||
|
|
return None
|
||
|
|
|
||
|
|
@deprecated_attribute(old='src', new='source_path', since=(3, 2, 0))
|
||
|
|
def src():
|
||
|
|
return None
|
||
|
|
|
||
|
|
@deprecated_attribute(old='dst', new='save_as', since=(3, 2, 0))
|
||
|
|
def dst():
|
||
|
|
return None
|
||
|
|
|
||
|
|
@property
|
||
|
|
def url(self):
|
||
|
|
# Note when url has been referenced, so we can avoid overriding it.
|
||
|
|
self._output_location_referenced = True
|
||
|
|
return super().url
|
||
|
|
|
||
|
|
@property
|
||
|
|
def save_as(self):
|
||
|
|
# Note when save_as has been referenced, so we can avoid overriding it.
|
||
|
|
self._output_location_referenced = True
|
||
|
|
return super().save_as
|
||
|
|
|
||
|
|
def attach_to(self, content):
|
||
|
|
"""Override our output directory with that of the given content object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Determine our file's new output path relative to the linking
|
||
|
|
# document. If it currently lives beneath the linking
|
||
|
|
# document's source directory, preserve that relationship on output.
|
||
|
|
# Otherwise, make it a sibling.
|
||
|
|
|
||
|
|
linking_source_dir = os.path.dirname(content.source_path)
|
||
|
|
tail_path = os.path.relpath(self.source_path, linking_source_dir)
|
||
|
|
if tail_path.startswith(os.pardir + os.sep):
|
||
|
|
tail_path = os.path.basename(tail_path)
|
||
|
|
new_save_as = os.path.join(
|
||
|
|
os.path.dirname(content.save_as), tail_path)
|
||
|
|
|
||
|
|
# We do not build our new url by joining tail_path with the linking
|
||
|
|
# document's url, because we cannot know just by looking at the latter
|
||
|
|
# whether it points to the document itself or to its parent directory.
|
||
|
|
# (An url like 'some/content' might mean a directory named 'some'
|
||
|
|
# with a file named 'content', or it might mean a directory named
|
||
|
|
# 'some/content' with a file named 'index.html'.) Rather than trying
|
||
|
|
# to figure it out by comparing the linking document's url and save_as
|
||
|
|
# path, we simply build our new url from our new save_as path.
|
||
|
|
|
||
|
|
new_url = path_to_url(new_save_as)
|
||
|
|
|
||
|
|
def _log_reason(reason):
|
||
|
|
logger.warning(
|
||
|
|
"The {attach} link in %s cannot relocate "
|
||
|
|
"%s because %s. Falling back to "
|
||
|
|
"{filename} link behavior instead.",
|
||
|
|
content.get_relative_source_path(),
|
||
|
|
self.get_relative_source_path(), reason,
|
||
|
|
extra={'limit_msg': "More {attach} warnings silenced."})
|
||
|
|
|
||
|
|
# We never override an override, because we don't want to interfere
|
||
|
|
# with user-defined overrides that might be in EXTRA_PATH_METADATA.
|
||
|
|
if hasattr(self, 'override_save_as') or hasattr(self, 'override_url'):
|
||
|
|
if new_save_as != self.save_as or new_url != self.url:
|
||
|
|
_log_reason("its output location was already overridden")
|
||
|
|
return
|
||
|
|
|
||
|
|
# We never change an output path that has already been referenced,
|
||
|
|
# because we don't want to break links that depend on that path.
|
||
|
|
if self._output_location_referenced:
|
||
|
|
if new_save_as != self.save_as or new_url != self.url:
|
||
|
|
_log_reason("another link already referenced its location")
|
||
|
|
return
|
||
|
|
|
||
|
|
self.override_save_as = new_save_as
|
||
|
|
self.override_url = new_url
|