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# -*- coding: utf-8 -*-
# Copyright (c) 2012 Roberto Alsina y otros.
# 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.
import codecs
import os
import lxml.html
from . import utils
__all__ = ['Post']
class Post(object):
"""Represents a blog post or web page."""
def __init__(self, source_path, cache_folder, destination, use_in_feeds,
translations, default_lang, blog_url, messages):
"""Initialize post.
The base path is the .txt post file. From it we calculate
the meta file, as well as any translations available, and
the .html fragment file path.
`compile_html` is a function that knows how to compile this Post to
html.
"""
self.prev_post = None
self.next_post = None
self.blog_url = blog_url
self.is_draft = False
self.source_path = source_path # posts/blah.txt
self.post_name = os.path.splitext(source_path)[0] # posts/blah
# cache/posts/blah.html
self.base_path = os.path.join(cache_folder, self.post_name + ".html")
self.metadata_path = self.post_name + ".meta" # posts/blah.meta
self.folder = destination
self.translations = translations
self.default_lang = default_lang
self.messages = messages
if os.path.isfile(self.metadata_path):
with codecs.open(self.metadata_path, "r", "utf8") as meta_file:
meta_data = meta_file.readlines()
while len(meta_data) < 6:
meta_data.append("")
(default_title, default_pagename, self.date, self.tags,
self.link, default_description) = \
[x.strip() for x in meta_data][:6]
else:
(default_title, default_pagename, self.date, self.tags,
self.link, default_description) = \
utils.get_meta(self.source_path)
if not default_title or not default_pagename or not self.date:
raise OSError("You must set a title and slug and date!")
self.date = utils.to_datetime(self.date)
self.tags = [x.strip() for x in self.tags.split(',')]
self.tags = [_f for _f in self.tags if _f]
# While draft comes from the tags, it's not really a tag
self.use_in_feeds = use_in_feeds and "draft" not in self.tags
self.is_draft = 'draft' in self.tags
self.tags = [t for t in self.tags if t != 'draft']
self.pagenames = {}
self.titles = {}
self.descriptions = {}
# Load internationalized titles
# TODO: this has gotten much too complicated. Rethink.
for lang in translations:
if lang == default_lang:
self.titles[lang] = default_title
self.pagenames[lang] = default_pagename
self.descriptions[lang] = default_description
else:
metadata_path = self.metadata_path + "." + lang
source_path = self.source_path + "." + lang
try:
if os.path.isfile(metadata_path):
with codecs.open(
metadata_path, "r", "utf8") as meta_file:
meta_data = [x.strip() for x in
meta_file.readlines()]
while len(meta_data) < 6:
meta_data.append("")
self.titles[lang] = meta_data[0] or default_title
self.pagenames[lang] = meta_data[1] or\
default_pagename
self.descriptions[lang] = meta_data[5] or\
default_description
else:
ttitle, ppagename, tmp1, tmp2, tmp3, ddescription = \
utils.get_meta(source_path)
self.titles[lang] = ttitle or default_title
self.pagenames[lang] = ppagename or default_pagename
self.descriptions[lang] = ddescription or\
default_description
except:
self.titles[lang] = default_title
self.pagenames[lang] = default_pagename
self.descriptions[lang] = default_description
def title(self, lang):
"""Return localized title."""
return self.titles[lang]
def description(self, lang):
"""Return localized description."""
return self.descriptions[lang]
def deps(self, lang):
"""Return a list of dependencies to build this post's page."""
deps = [self.base_path]
if lang != self.default_lang:
deps += [self.base_path + "." + lang]
deps += self.fragment_deps(lang)
return deps
def fragment_deps(self, lang):
"""Return a list of dependencies to build this post's fragment."""
deps = [self.source_path]
if os.path.isfile(self.metadata_path):
deps.append(self.metadata_path)
if lang != self.default_lang:
lang_deps = list(filter(os.path.exists, [x + "." + lang for x in deps]))
deps += lang_deps
return deps
def text(self, lang, teaser_only=False):
"""Read the post file for that language and return its contents"""
file_name = self.base_path
if lang != self.default_lang:
file_name_lang = file_name + ".%s" % lang
if os.path.exists(file_name_lang):
file_name = file_name_lang
with codecs.open(file_name, "r", "utf8") as post_file:
data = post_file.read()
if data:
data = lxml.html.make_links_absolute(data, self.permalink())
if data and teaser_only:
e = lxml.html.fromstring(data)
teaser = []
flag = False
for elem in e:
elem_string = lxml.html.tostring(elem)
if '<!-- TEASER_END -->' in elem_string.upper():
flag = True
break
teaser.append(elem_string)
if flag:
teaser.append('<p><a href="%s">%s...</a></p>' %
(self.permalink(lang), self.messages[lang]["Read more"]))
data = ''.join(teaser)
return data
def destination_path(self, lang, extension='.html'):
path = os.path.join(self.translations[lang],
self.folder, self.pagenames[lang] + extension)
return path
def permalink(self, lang=None, absolute=False, extension='.html'):
if lang is None:
lang = self.default_lang
pieces = list(os.path.split(self.translations[lang]))
pieces += list(os.path.split(self.folder))
pieces += [self.pagenames[lang] + extension]
pieces = [_f for _f in pieces if _f]
if absolute:
pieces = [self.blog_url] + pieces
else:
pieces = [""] + pieces
link = "/".join(pieces)
return link
def source_ext(self):
return os.path.splitext(self.source_path)[1]
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