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calibre-web/cps/comic.py

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# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2018 OzzieIsaacs
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from . import logger, isoLanguages
from .constants import BookMeta
log = logger.create()
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try:
from wand.image import Image
use_IM = True
except (ImportError, RuntimeError) as e:
use_IM = False
try:
from comicapi.comicarchive import ComicArchive, MetaDataStyle
use_comic_meta = True
try:
from comicapi import __version__ as comic_version
except ImportError:
comic_version = ''
except (ImportError, LookupError) as e:
log.debug('Cannot import comicapi, extracting comic metadata will not work: %s', e)
import zipfile
import tarfile
try:
import rarfile
use_rarfile = True
except (ImportError, SyntaxError) as e:
log.debug('Cannot import rarfile, extracting cover files from rar files will not work: %s', e)
use_rarfile = False
use_comic_meta = False
NO_JPEG_EXTENSIONS = ['.png', '.webp', '.bmp']
COVER_EXTENSIONS = ['.png', '.webp', '.bmp', '.jpg', '.jpeg']
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def _cover_processing(tmp_file_name, img, extension):
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tmp_cover_name = os.path.join(os.path.dirname(tmp_file_name), 'cover.jpg')
if extension in NO_JPEG_EXTENSIONS:
if use_IM:
with Image(blob=img) as imgc:
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imgc.format = 'jpeg'
imgc.transform_colorspace('rgb')
imgc.save(filename=tmp_cover_name)
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return tmp_cover_name
else:
return None
if img:
with open(tmp_cover_name, 'wb') as f:
f.write(img)
return tmp_cover_name
else:
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return None
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def _extract_Cover_from_archive(original_file_extension, tmp_file_name, rarExecutable):
cover_data = extension = None
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if original_file_extension.upper() == '.CBZ':
cf = zipfile.ZipFile(tmp_file_name)
for name in cf.namelist():
ext = os.path.splitext(name)
if len(ext) > 1:
extension = ext[1].lower()
if extension in COVER_EXTENSIONS:
cover_data = cf.read(name)
break
elif original_file_extension.upper() == '.CBT':
cf = tarfile.TarFile(tmp_file_name)
for name in cf.getnames():
ext = os.path.splitext(name)
if len(ext) > 1:
extension = ext[1].lower()
if extension in COVER_EXTENSIONS:
cover_data = cf.extractfile(name).read()
break
elif original_file_extension.upper() == '.CBR' and use_rarfile:
try:
rarfile.UNRAR_TOOL = rarExecutable
cf = rarfile.RarFile(tmp_file_name)
for name in cf.getnames():
ext = os.path.splitext(name)
if len(ext) > 1:
extension = ext[1].lower()
if extension in COVER_EXTENSIONS:
cover_data = cf.read(name)
break
except Exception as ex:
log.debug('Rarfile failed with error: %s', ex)
return cover_data, extension
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def _extractCover(tmp_file_name, original_file_extension, rarExecutable):
cover_data = extension = None
if use_comic_meta:
archive = ComicArchive(tmp_file_name, rar_exe_path=rarExecutable)
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for index, name in enumerate(archive.getPageNameList()):
ext = os.path.splitext(name)
if len(ext) > 1:
extension = ext[1].lower()
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if extension in COVER_EXTENSIONS:
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cover_data = archive.getPage(index)
break
else:
cover_data, extension = _extract_Cover_from_archive(original_file_extension, tmp_file_name, rarExecutable)
return _cover_processing(tmp_file_name, cover_data, extension)
def get_comic_info(tmp_file_path, original_file_name, original_file_extension, rarExecutable):
if use_comic_meta:
archive = ComicArchive(tmp_file_path, rar_exe_path=rarExecutable)
if archive.seemsToBeAComicArchive():
if archive.hasMetadata(MetaDataStyle.CIX):
style = MetaDataStyle.CIX
elif archive.hasMetadata(MetaDataStyle.CBI):
style = MetaDataStyle.CBI
else:
style = None
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# if style is not None:
loadedMetadata = archive.readMetadata(style)
lang = loadedMetadata.language or ""
loadedMetadata.language = isoLanguages.get_lang3(lang)
return BookMeta(
file_path=tmp_file_path,
extension=original_file_extension,
title=loadedMetadata.title or original_file_name,
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author=" & ".join([credit["person"]
for credit in loadedMetadata.credits if credit["role"] == "Writer"]) or u'Unknown',
cover=_extractCover(tmp_file_path, original_file_extension, rarExecutable),
description=loadedMetadata.comments or "",
tags="",
series=loadedMetadata.series or "",
series_id=loadedMetadata.issue or "",
languages=loadedMetadata.language,
publisher="")
return BookMeta(
file_path=tmp_file_path,
extension=original_file_extension,
title=original_file_name,
author=u'Unknown',
cover=_extractCover(tmp_file_path, original_file_extension, rarExecutable),
description="",
tags="",
series="",
series_id="",
languages="",
publisher="")