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# -*- coding: utf-8 -*-
# Copyright © 2012-2015 Roberto Alsina and others.
# Permission is hereby granted, free of charge, to any
# person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the
# Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice
# shall be included in all copies or substantial portions of
# the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""Build HTML fragments from metadata and text."""
from copy import copy
import os
from nikola.plugin_categories import Task
from nikola import filters, utils
def update_deps(post, lang, task):
"""Update file dependencies as they might have been updated during compilation.
This is done for example by the ReST page compiler, which writes its
dependencies into a .dep file. This file is read and incorporated when calling
post.fragment_deps(), and only available /after/ compiling the fragment.
"""
task.file_dep.update([p for p in post.fragment_deps(lang) if not p.startswith("####MAGIC####")])
class RenderPosts(Task):
"""Build HTML fragments from metadata and text."""
name = "render_posts"
def gen_tasks(self):
"""Build HTML fragments from metadata and text."""
self.site.scan_posts()
kw = {
"translations": self.site.config["TRANSLATIONS"],
"timeline": self.site.timeline,
"default_lang": self.site.config["DEFAULT_LANG"],
"show_untranslated_posts": self.site.config['SHOW_UNTRANSLATED_POSTS'],
"demote_headers": self.site.config['DEMOTE_HEADERS'],
}
self.tl_changed = False
yield self.group_task()
def tl_ch():
self.tl_changed = True
yield {
'basename': self.name,
'name': 'timeline_changes',
'actions': [tl_ch],
'uptodate': [utils.config_changed({1: kw['timeline']})],
}
for lang in kw["translations"]:
deps_dict = copy(kw)
deps_dict.pop('timeline')
for post in kw['timeline']:
# Extra config dependencies picked from config
for p in post.fragment_deps(lang):
if p.startswith('####MAGIC####CONFIG:'):
k = p.split('####MAGIC####CONFIG:', 1)[-1]
deps_dict[k] = self.site.config.get(k)
dest = post.translated_base_path(lang)
file_dep = [p for p in post.fragment_deps(lang) if not p.startswith("####MAGIC####")]
task = {
'basename': self.name,
'name': dest,
'file_dep': file_dep,
'targets': [dest],
'actions': [(post.compile, (lang, )),
(update_deps, (post, lang, )),
],
'clean': True,
'uptodate': [
utils.config_changed(deps_dict, 'nikola.plugins.task.posts'),
lambda p=post, l=lang: self.dependence_on_timeline(p, l)
] + post.fragment_deps_uptodate(lang),
'task_dep': ['render_posts:timeline_changes']
}
# Apply filters specified in the metadata
ff = [x.strip() for x in post.meta('filters', lang).split(',')]
flist = []
for i, f in enumerate(ff):
if not f:
continue
if f.startswith('filters.'): # A function from the filters module
f = f[8:]
try:
flist.append(getattr(filters, f))
except AttributeError:
pass
else:
flist.append(f)
yield utils.apply_filters(task, {os.path.splitext(dest): flist})
def dependence_on_timeline(self, post, lang):
"""Check if a post depends on the timeline."""
if "####MAGIC####TIMELINE" not in post.fragment_deps(lang):
return True # No dependency on timeline
elif self.tl_changed:
return False # Timeline changed
return True
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