mirror of
https://github.com/janeczku/calibre-web
synced 2024-10-31 15:20:28 +00:00
199 lines
8.6 KiB
Python
199 lines
8.6 KiB
Python
from __future__ import division, print_function, unicode_literals
|
|
import sys
|
|
import os
|
|
import re
|
|
|
|
from glob import glob
|
|
from shutil import copyfile
|
|
|
|
from sqlalchemy.exc import SQLAlchemyError
|
|
|
|
from cps.services.worker import CalibreTask, STAT_FINISH_SUCCESS
|
|
from cps import calibre_db, db
|
|
from cps import logger, config
|
|
from cps.subproc_wrapper import process_open
|
|
from flask_babel import gettext as _
|
|
|
|
from cps.tasks.mail import TaskEmail
|
|
from cps import gdriveutils
|
|
log = logger.create()
|
|
|
|
|
|
class TaskConvert(CalibreTask):
|
|
def __init__(self, file_path, bookid, taskMessage, settings, kindle_mail):
|
|
super(TaskConvert, self).__init__(taskMessage)
|
|
self.file_path = file_path
|
|
self.bookid = bookid
|
|
self.settings = settings
|
|
self.kindle_mail = kindle_mail
|
|
|
|
self.results = dict()
|
|
|
|
def run(self, worker_thread):
|
|
self.worker_thread = worker_thread
|
|
filename = self._convert_ebook_format()
|
|
|
|
if filename:
|
|
if config.config_use_google_drive:
|
|
gdriveutils.updateGdriveCalibreFromLocal()
|
|
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:
|
|
task = TaskEmail(self.settings['subject'], self.results["path"],
|
|
filename, self.settings, self.kindle_mail,
|
|
self.settings['subject'], self.settings['body'], internal=True)
|
|
task.start(worker_thread)
|
|
|
|
# even though the convert task might be finished, if this task fails, fail the whole thing
|
|
if task.stat != STAT_FINISH_SUCCESS:
|
|
raise Exception(task.error)
|
|
except Exception as e:
|
|
return self._handleError(str(e))
|
|
|
|
def _convert_ebook_format(self):
|
|
error_message = None
|
|
# local_session = db.Session()
|
|
file_path = self.file_path
|
|
book_id = self.bookid
|
|
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 -
|
|
# 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):
|
|
log.info("Book id %d already converted to %s", book_id, format_new_ext)
|
|
cur_book = calibre_db.get_book(book_id)
|
|
self.results['path'] = file_path
|
|
self.results['title'] = cur_book.title
|
|
self._handleSuccess()
|
|
return 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):
|
|
# ToDo Text is not translated
|
|
self._handleError(_(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 = calibre_db.get_book(book_id)
|
|
if os.path.isfile(file_path + format_new_ext):
|
|
# self.db_queue.join()
|
|
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:
|
|
calibre_db.session.merge(new_format)
|
|
calibre_db.session.commit()
|
|
except SQLAlchemyError as e:
|
|
calibre_db.session.rollback()
|
|
log.error("Database error: %s", e)
|
|
return
|
|
self.results['path'] = cur_book.path
|
|
self.results['title'] = cur_book.title
|
|
if config.config_use_google_drive:
|
|
os.remove(file_path + format_old_ext)
|
|
self._handleSuccess()
|
|
return file_path + format_new_ext
|
|
else:
|
|
error_message = _('%(format)s format not found on disk', format=format_new_ext.upper())
|
|
log.info("ebook converter failed with error while converting book")
|
|
if not error_message:
|
|
error_message = _('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, _(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']
|
|
if sys.version_info < (3, 0):
|
|
nextline = [x.decode('utf-8') for x in nextline]
|
|
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, _(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):
|
|
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 = [1, 2]
|
|
command = [config.config_converterpath, (file_path + format_old_ext),
|
|
(file_path + format_new_ext)]
|
|
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)
|
|
except OSError as e:
|
|
return 1, _(u"Ebook-converter failed: %(error)s", error=e)
|
|
|
|
while p.poll() is None:
|
|
nextline = p.stdout.readline()
|
|
if os.name == 'nt' and sys.version_info < (3, 0):
|
|
nextline = nextline.decode('windows-1252')
|
|
elif os.name == 'posix' and sys.version_info < (3, 0):
|
|
nextline = nextline.decode('utf-8')
|
|
log.debug(nextline.strip('\r\n'))
|
|
# parse progress string from calibre-converter
|
|
progress = re.search(r"(\d+)%\s.*", nextline)
|
|
if progress:
|
|
self.progress = int(progress.group(1)) / 100
|
|
|
|
# process returncode
|
|
check = p.returncode
|
|
calibre_traceback = p.stderr.readlines()
|
|
error_message = ""
|
|
for ele in calibre_traceback:
|
|
if sys.version_info < (3, 0):
|
|
ele = ele.decode('utf-8')
|
|
log.debug(ele.strip('\n'))
|
|
if not ele.startswith('Traceback') and not ele.startswith(' File'):
|
|
error_message = _("Calibre failed with error: %(error)s", error=ele.strip('\n'))
|
|
return check, error_message
|
|
|
|
@property
|
|
def name(self):
|
|
return "Convert"
|