184 lines
7.3 KiB
Python
184 lines
7.3 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2018 lemmsh, Kennyl, Kyosfonica, matthazinski
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import zipfile
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from lxml import etree
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from . import isoLanguages, cover
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from .helper import split_authors
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from .constants import BookMeta
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def _extract_cover(zip_file, cover_file, cover_path, tmp_file_name):
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if cover_file is None:
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return None
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else:
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cf = extension = None
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zip_cover_path = os.path.join(cover_path, cover_file).replace('\\', '/')
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prefix = os.path.splitext(tmp_file_name)[0]
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tmp_cover_name = prefix + '.' + os.path.basename(zip_cover_path)
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ext = os.path.splitext(tmp_cover_name)
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if len(ext) > 1:
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extension = ext[1].lower()
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if extension in cover.COVER_EXTENSIONS:
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cf = zip_file.read(zip_cover_path)
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return cover.cover_processing(tmp_file_name, cf, extension)
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def get_epub_info(tmp_file_path, original_file_name, original_file_extension):
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ns = {
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'n': 'urn:oasis:names:tc:opendocument:xmlns:container',
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'pkg': 'http://www.idpf.org/2007/opf',
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'dc': 'http://purl.org/dc/elements/1.1/'
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}
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epub_zip = zipfile.ZipFile(tmp_file_path)
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txt = epub_zip.read('META-INF/container.xml')
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tree = etree.fromstring(txt)
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cf_name = tree.xpath('n:rootfiles/n:rootfile/@full-path', namespaces=ns)[0]
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cf = epub_zip.read(cf_name)
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tree = etree.fromstring(cf)
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cover_path = os.path.dirname(cf_name)
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p = tree.xpath('/pkg:package/pkg:metadata', namespaces=ns)[0]
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epub_metadata = {}
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for s in ['title', 'description', 'creator', 'language', 'subject', 'publisher', 'date']:
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tmp = p.xpath('dc:%s/text()' % s, namespaces=ns)
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if len(tmp) > 0:
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if s == 'creator':
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epub_metadata[s] = ' & '.join(split_authors(tmp))
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elif s == 'subject':
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epub_metadata[s] = ', '.join(tmp)
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elif s == 'date':
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epub_metadata[s] = tmp[0][:10]
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else:
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epub_metadata[s] = tmp[0]
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else:
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epub_metadata[s] = 'Unknown'
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if epub_metadata['subject'] == 'Unknown':
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epub_metadata['subject'] = ''
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if epub_metadata['publisher'] == 'Unknown':
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epub_metadata['publisher'] = ''
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if epub_metadata['date'] == 'Unknown':
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epub_metadata['date'] = ''
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if epub_metadata['description'] == 'Unknown':
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description = tree.xpath("//*[local-name() = 'description']/text()")
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if len(description) > 0:
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epub_metadata['description'] = description
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else:
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epub_metadata['description'] = ""
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lang = epub_metadata['language'].split('-', 1)[0].lower()
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epub_metadata['language'] = isoLanguages.get_lang3(lang)
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epub_metadata = parse_epub_series(ns, tree, epub_metadata)
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cover_file = parse_epub_cover(ns, tree, epub_zip, cover_path, tmp_file_path)
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identifiers = []
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for node in p.xpath('dc:identifier', namespaces=ns):
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identifier_name = node.attrib.values()[-1]
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identifier_value = node.text
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if identifier_name in ('uuid', 'calibre') or identifier_value is None:
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continue
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identifiers.append([identifier_name, identifier_value])
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if not epub_metadata['title']:
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title = original_file_name
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else:
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title = epub_metadata['title']
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return BookMeta(
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file_path=tmp_file_path,
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extension=original_file_extension,
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title=title.encode('utf-8').decode('utf-8'),
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author=epub_metadata['creator'].encode('utf-8').decode('utf-8'),
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cover=cover_file,
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description=epub_metadata['description'],
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tags=epub_metadata['subject'].encode('utf-8').decode('utf-8'),
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series=epub_metadata['series'].encode('utf-8').decode('utf-8'),
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series_id=epub_metadata['series_id'].encode('utf-8').decode('utf-8'),
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languages=epub_metadata['language'],
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publisher=epub_metadata['publisher'].encode('utf-8').decode('utf-8'),
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pubdate=epub_metadata['date'],
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identifiers=identifiers)
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def parse_epub_cover(ns, tree, epub_zip, cover_path, tmp_file_path):
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cover_section = tree.xpath("/pkg:package/pkg:manifest/pkg:item[@id='cover-image']/@href", namespaces=ns)
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cover_file = None
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# if len(cover_section) > 0:
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for cs in cover_section:
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cover_file = _extract_cover(epub_zip, cs, cover_path, tmp_file_path)
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if cover_file:
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break
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if not cover_file:
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meta_cover = tree.xpath("/pkg:package/pkg:metadata/pkg:meta[@name='cover']/@content", namespaces=ns)
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if len(meta_cover) > 0:
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cover_section = tree.xpath(
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"/pkg:package/pkg:manifest/pkg:item[@id='"+meta_cover[0]+"']/@href", namespaces=ns)
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if not cover_section:
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cover_section = tree.xpath(
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"/pkg:package/pkg:manifest/pkg:item[@properties='" + meta_cover[0] + "']/@href", namespaces=ns)
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else:
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cover_section = tree.xpath("/pkg:package/pkg:guide/pkg:reference/@href", namespaces=ns)
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for cs in cover_section:
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filetype = cs.rsplit('.', 1)[-1]
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if filetype == "xhtml" or filetype == "html": # if cover is (x)html format
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markup = epub_zip.read(os.path.join(cover_path, cs))
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markup_tree = etree.fromstring(markup)
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# no matter xhtml or html with no namespace
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img_src = markup_tree.xpath("//*[local-name() = 'img']/@src")
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# Alternative image source
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if not len(img_src):
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img_src = markup_tree.xpath("//attribute::*[contains(local-name(), 'href')]")
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if len(img_src):
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# img_src maybe start with "../"" so fullpath join then relpath to cwd
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filename = os.path.relpath(os.path.join(os.path.dirname(os.path.join(cover_path, cover_section[0])),
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img_src[0]))
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cover_file = _extract_cover(epub_zip, filename, "", tmp_file_path)
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else:
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cover_file = _extract_cover(epub_zip, cs, cover_path, tmp_file_path)
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if cover_file: break
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return cover_file
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def parse_epub_series(ns, tree, epub_metadata):
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series = tree.xpath("/pkg:package/pkg:metadata/pkg:meta[@name='calibre:series']/@content", namespaces=ns)
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if len(series) > 0:
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epub_metadata['series'] = series[0]
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else:
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epub_metadata['series'] = ''
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series_id = tree.xpath("/pkg:package/pkg:metadata/pkg:meta[@name='calibre:series_index']/@content", namespaces=ns)
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if len(series_id) > 0:
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epub_metadata['series_id'] = series_id[0]
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else:
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epub_metadata['series_id'] = '1'
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return epub_metadata
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