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# This file is part of EbookLib.
# Copyright (c) 2013 Aleksandar Erkalovic <aerkalov@gmail.com>
#
# EbookLib is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# EbookLib is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with EbookLib. If not, see <http://www.gnu.org/licenses/>.
import six
import subprocess
from ebooklib.plugins.base import BasePlugin
from ebooklib.utils import parse_html_string
# Recommend usage of
# - https://github.com/w3c/tidy-html5
def tidy_cleanup(content, **extra):
cmd = []
for k, v in six.iteritems(extra):
if v:
cmd.append('--%s' % k)
cmd.append(v)
else:
cmd.append('-%s' % k)
# must parse all other extra arguments
try:
p = subprocess.Popen(['tidy']+cmd, shell=False,
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, close_fds=True)
except OSError:
return (3, None)
p.stdin.write(content)
(cont, p_err) = p.communicate()
# 0 - all ok
# 1 - there were warnings
# 2 - there were errors
# 3 - exception
return (p.returncode, cont)
class TidyPlugin(BasePlugin):
NAME = 'Tidy HTML'
OPTIONS = {'char-encoding': 'utf8',
'tidy-mark': 'no'
}
def __init__(self, extra = {}):
self.options = dict(self.OPTIONS)
self.options.update(extra)
def html_before_write(self, book, chapter):
if not chapter.content:
return None
(_, chapter.content) = tidy_cleanup(chapter.content, **self.options)
return chapter.content
def html_after_read(self, book, chapter):
if not chapter.content:
return None
(_, chapter.content) = tidy_cleanup(chapter.content, **self.options)
return chapter.content
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