# -*- coding: utf-8 -*- # This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web) # Copyright (C) 2020 pwr # # 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 . import os import re from glob import glob from shutil import copyfile, copyfileobj from markupsafe import escape from tempfile import gettempdir from time import time from sqlalchemy.exc import SQLAlchemyError from flask_babel import lazy_gettext as N_ from cps.services.worker import CalibreTask from cps import db from cps import logger, config from cps.subproc_wrapper import process_open from flask_babel import gettext as _ from cps.kobo_sync_status import remove_synced_book from cps.ub import init_db_thread from cps.tasks.mail import TaskEmail from cps import gdriveutils from cps.constants import SUPPORTED_CALIBRE_BINARIES log = logger.create() current_milli_time = lambda: int(round(time() * 1000)) class TaskConvert(CalibreTask): def __init__(self, file_path, book_id, task_message, settings, kindle_mail, user=None): super(TaskConvert, self).__init__(task_message) self.file_path = file_path self.book_id = book_id self.title = "" self.settings = settings self.kindle_mail = kindle_mail self.user = user self.results = dict() def run(self, worker_thread): self.worker_thread = worker_thread if config.config_use_google_drive: worker_db = db.CalibreDB(expire_on_commit=False, init=True) cur_book = worker_db.get_book(self.book_id) self.title = cur_book.title data = worker_db.get_book_format(self.book_id, self.settings['old_book_format']) df = gdriveutils.getFileFromEbooksFolder(cur_book.path, data.name + "." + self.settings['old_book_format'].lower()) if df: datafile = os.path.join(config.config_calibre_dir, cur_book.path, data.name + u"." + self.settings['old_book_format'].lower()) if not os.path.exists(os.path.join(config.config_calibre_dir, cur_book.path)): os.makedirs(os.path.join(config.config_calibre_dir, cur_book.path)) df.GetContentFile(datafile) worker_db.session.close() else: error_message = _(u"%(format)s not found on Google Drive: %(fn)s", format=self.settings['old_book_format'], fn=data.name + "." + self.settings['old_book_format'].lower()) worker_db.session.close() return error_message filename = self._convert_ebook_format() if config.config_use_google_drive: os.remove(self.file_path + u'.' + self.settings['old_book_format'].lower()) if filename: if config.config_use_google_drive: # Upload files to gdrive gdriveutils.updateGdriveCalibreFromLocal() self._handleSuccess() if self.kindle_mail: # if we're sending to kindle after converting, create a one-off task and run it immediately # todo: figure out how to incorporate this into the progress try: EmailText = N_(u"%(book)s send to Kindle", book=escape(self.title)) # ToDo: Delete when OPF creation has been implemented if config.config_binariesdir: quotes = [3, 5] calibredb_binarypath = os.path.join(config.config_binariesdir, SUPPORTED_CALIBRE_BINARIES["calibredb"]) opf_command = [calibredb_binarypath, 'show_metadata', '--as-opf', str(self.book_id), '--with-library', config.config_calibre_dir] p = process_open(opf_command, quotes) p.wait() path_opf = os.path.join(config.config_calibre_dir, cur_book.path, "metadata.opf") with open(path_opf, 'w') as fd: copyfileobj(p.stdout, fd) worker_thread.add(self.user, TaskEmail(self.settings['subject'], self.results["path"], filename, self.settings, self.kindle_mail, EmailText, self.settings['body'], internal=True) ) except Exception as ex: return self._handleError(str(ex)) def _convert_ebook_format(self): error_message = None local_db = db.CalibreDB(expire_on_commit=False, init=True) file_path = self.file_path book_id = self.book_id format_old_ext = u'.' + self.settings['old_book_format'].lower() format_new_ext = u'.' + self.settings['new_book_format'].lower() # check to see if destination format already exists - or if book is in database # if it does - mark the conversion task as complete and return a success # this will allow send to kindle workflow to continue to work if os.path.isfile(file_path + format_new_ext) or\ local_db.get_book_format(self.book_id, self.settings['new_book_format']): log.info("Book id %d already converted to %s", book_id, format_new_ext) cur_book = local_db.get_book(book_id) self.title = cur_book.title self.results['path'] = cur_book.path self.results['title'] = self.title new_format = local_db.session.query(db.Data).filter(db.Data.book == book_id)\ .filter(db.Data.format == self.settings['new_book_format'].upper()).one_or_none() if not new_format: new_format = db.Data(name=os.path.basename(file_path), book_format=self.settings['new_book_format'].upper(), book=book_id, uncompressed_size=os.path.getsize(file_path + format_new_ext)) try: local_db.session.merge(new_format) local_db.session.commit() except SQLAlchemyError as e: local_db.session.rollback() log.error("Database error: %s", e) local_db.session.close() self._handleError(N_("Database error: %(error)s.", error=e)) return self._handleSuccess() local_db.session.close() return os.path.basename(file_path + format_new_ext) else: log.info("Book id %d - target format of %s does not exist. Moving forward with convert.", book_id, format_new_ext) if config.config_kepubifypath and format_old_ext == '.epub' and format_new_ext == '.kepub': check, error_message = self._convert_kepubify(file_path, format_old_ext, format_new_ext) else: # check if calibre converter-executable is existing if not os.path.exists(config.config_converterpath): self._handleError(N_(u"Calibre ebook-convert %(tool)s not found", tool=config.config_converterpath)) return check, error_message = self._convert_calibre(file_path, format_old_ext, format_new_ext) if check == 0: cur_book = local_db.get_book(book_id) if os.path.isfile(file_path + format_new_ext): new_format = local_db.session.query(db.Data).filter(db.Data.book == book_id) \ .filter(db.Data.format == self.settings['new_book_format'].upper()).one_or_none() if not new_format: new_format = db.Data(name=cur_book.data[0].name, book_format=self.settings['new_book_format'].upper(), book=book_id, uncompressed_size=os.path.getsize(file_path + format_new_ext)) try: local_db.session.merge(new_format) local_db.session.commit() if self.settings['new_book_format'].upper() in ['KEPUB', 'EPUB', 'EPUB3']: ub_session = init_db_thread() remove_synced_book(book_id, True, ub_session) ub_session.close() except SQLAlchemyError as e: local_db.session.rollback() log.error("Database error: %s", e) local_db.session.close() self._handleError(error_message) return self.results['path'] = cur_book.path self.title = cur_book.title self.results['title'] = self.title if not config.config_use_google_drive: self._handleSuccess() return os.path.basename(file_path + format_new_ext) else: error_message = N_('%(format)s format not found on disk', format=format_new_ext.upper()) local_db.session.close() log.info("ebook converter failed with error while converting book") if not error_message: error_message = N_('Ebook converter failed with unknown error') self._handleError(error_message) return def _convert_kepubify(self, file_path, format_old_ext, format_new_ext): quotes = [1, 3] command = [config.config_kepubifypath, (file_path + format_old_ext), '-o', os.path.dirname(file_path)] try: p = process_open(command, quotes) except OSError as e: return 1, N_(u"Kepubify-converter failed: %(error)s", error=e) self.progress = 0.01 while True: nextline = p.stdout.readlines() nextline = [x.strip('\n') for x in nextline if x != '\n'] for line in nextline: log.debug(line) if p.poll() is not None: break # ToD Handle # process returncode check = p.returncode # move file if check == 0: converted_file = glob(os.path.join(os.path.dirname(file_path), "*.kepub.epub")) if len(converted_file) == 1: copyfile(converted_file[0], (file_path + format_new_ext)) os.unlink(converted_file[0]) else: return 1, N_(u"Converted file not found or more than one file in folder %(folder)s", folder=os.path.dirname(file_path)) return check, None def _convert_calibre(self, file_path, format_old_ext, format_new_ext): book_id = self.book_id try: # Linux py2.7 encode as list without quotes no empty element for parameters # linux py3.x no encode and as list without quotes no empty element for parameters # windows py2.7 encode as string with quotes empty element for parameters is okay # windows py 3.x no encode and as string with quotes empty element for parameters is okay # separate handling for windows and linux quotes = [3, 5] tmp_dir = os.path.join(gettempdir(), 'calibre_web') if not os.path.isdir(tmp_dir): os.mkdir(tmp_dir) calibredb_binarypath = os.path.join(config.config_binariesdir, SUPPORTED_CALIBRE_BINARIES["calibredb"]) opf_command = [calibredb_binarypath, 'show_metadata', '--as-opf', str(book_id), '--with-library', config.config_calibre_dir] p = process_open(opf_command, quotes) p.wait() path_tmp_opf = os.path.join(tmp_dir, "metadata_" + str(current_milli_time()) + ".opf") with open(path_tmp_opf, 'w') as fd: copyfileobj(p.stdout, fd) quotes = [1, 2, 4, 6] command = [config.config_converterpath, (file_path + format_old_ext), (file_path + format_new_ext), '--from-opf', path_tmp_opf, '--cover', os.path.join(os.path.dirname(file_path), 'cover.jpg')] quotes_index = 3 if config.config_calibre: parameters = config.config_calibre.split(" ") for param in parameters: command.append(param) quotes.append(quotes_index) quotes_index += 1 p = process_open(command, quotes, newlines=False) except OSError as e: return 1, N_(u"Ebook-converter failed: %(error)s", error=e) while p.poll() is None: nextline = p.stdout.readline() if isinstance(nextline, bytes): nextline = nextline.decode('utf-8', errors="ignore").strip('\r\n') if nextline: log.debug(nextline) # parse progress string from calibre-converter progress = re.search(r"(\d+)%\s.*", nextline) if progress: self.progress = int(progress.group(1)) / 100 if config.config_use_google_drive: self.progress *= 0.9 # process returncode check = p.returncode calibre_traceback = p.stderr.readlines() error_message = "" for ele in calibre_traceback: ele = ele.decode('utf-8', errors="ignore").strip('\n') log.debug(ele) if not ele.startswith('Traceback') and not ele.startswith(' File'): error_message = N_("Calibre failed with error: %(error)s", error=ele) return check, error_message @property def name(self): return N_("Convert") def __str__(self): return "Convert {} {}".format(self.book_id, self.kindle_mail) @property def is_cancellable(self): return False