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calibre-web/cps/embed_helper.py

64 lines
2.4 KiB
Python

# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2024 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/>.
from uuid import uuid4
import os
from .file_helper import get_temp_dir
from .subproc_wrapper import process_open
from . import logger, config
from .constants import SUPPORTED_CALIBRE_BINARIES
log = logger.create()
def do_calibre_export(book_id, book_format):
try:
quotes = [3, 5, 7, 9]
tmp_dir = get_temp_dir()
calibredb_binarypath = get_calibre_binarypath("calibredb")
temp_file_name = str(uuid4())
my_env = os.environ.copy()
if config.config_calibre_split:
my_env['CALIBRE_OVERRIDE_DATABASE_PATH'] = os.path.join(config.config_calibre_dir, "metadata.db")
library_path = config.config_calibre_split_dir
else:
library_path = config.config_calibre_dir
opf_command = [calibredb_binarypath, 'export', '--dont-write-opf', '--with-library', library_path,
'--to-dir', tmp_dir, '--formats', book_format, "--template", "{}".format(temp_file_name),
str(book_id)]
p = process_open(opf_command, quotes, my_env)
_, err = p.communicate()
if err:
log.error('Metadata embedder encountered an error: %s', err)
return tmp_dir, temp_file_name
except OSError as ex:
# ToDo real error handling
log.error_or_exception(ex)
return None, None
def get_calibre_binarypath(binary):
binariesdir = config.config_binariesdir
if binariesdir:
try:
return os.path.join(binariesdir, SUPPORTED_CALIBRE_BINARIES[binary])
except KeyError as ex:
log.error("Binary not supported by Calibre-Web: %s", SUPPORTED_CALIBRE_BINARIES[binary])
pass
return ""