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Code Issues Releases Wiki Activity

(draft) metadata embedding when sending to device

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This commit is contained in:
Thore Schillmann 2022-07-22 08:58:28 +00:00
parent 4913673e8f
commit 9bcbe523d7
4 changed files with 49 additions and 3 deletions
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2
cps/constants.py
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@ -154,7 +154,7 @@ EXTENSIONS_UPLOAD = {'txt', 'pdf', 'epub', 'kepub', 'mobi', 'azw', 'azw3', 'cbr'
_extension = ""
if sys.platform == "win32":
_extension = ".exe"
SUPPORTED_CALIBRE_BINARIES = {binary:binary + _extension for binary in ["ebook-convert", "calibredb"]}
SUPPORTED_CALIBRE_BINARIES = {binary:binary + _extension for binary in ["ebook-convert", "calibredb", "ebook-meta"]}
def has_flag(value, bit_flag):

13
cps/helper.py
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@ -54,7 +54,7 @@ from .tasks.convert import TaskConvert
from . import logger, config, db, ub, fs
from . import gdriveutils as gd
from .constants import STATIC_DIR as _STATIC_DIR, CACHE_TYPE_THUMBNAILS, THUMBNAIL_TYPE_COVER, THUMBNAIL_TYPE_SERIES, SUPPORTED_CALIBRE_BINARIES
from .subproc_wrapper import process_wait
from .subproc_wrapper import process_wait, process_open
from .services.worker import WorkerThread
from .tasks.mail import TaskEmail
from .tasks.thumbnail import TaskClearCoverThumbnailCache, TaskGenerateCoverThumbnails
@ -213,6 +213,17 @@ def send_mail(book_id, book_format, convert, kindle_mail, calibrepath, user_id):
# returns None if success, otherwise errormessage
return convert_book_format(book_id, calibrepath, u'azw3', book_format.lower(), user_id, kindle_mail)
# 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(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, book.path, "metadata.opf")
with open(path_opf, 'w') as fd:
shutil.copyfileobj(p.stdout, fd)
for entry in iter(book.data):
if entry.format.upper() == book_format.upper():
converted_file_name = entry.name + '.' + book_format.lower()

10
cps/tasks/convert.py
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@ -93,6 +93,16 @@ class TaskConvert(CalibreTask):
# 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,

27
cps/tasks/mail.py
View File

@ -20,6 +20,7 @@ import os
import smtplib
import threading
import socket
from shutil import copy
import mimetypes
from io import StringIO
@ -32,6 +33,8 @@ from email.utils import formatdate
from cps.services.worker import CalibreTask
from cps.services import gmail
from cps import logger, config
from cps.subproc_wrapper import process_open
from cps.constants import SUPPORTED_CALIBRE_BINARIES
from cps import gdriveutils
import uuid
@ -245,15 +248,23 @@ class TaskEmail(CalibreTask):
df.GetContentFile(datafile)
else:
return None
if config.config_binariesdir:
datafile = cls._embed_metadata(calibre_path, book_path, filename, datafile)
os.remove(os.path.join(calibre_path, book_path, filename))
file_ = open(datafile, 'rb')
data = file_.read()
file_.close()
os.remove(datafile)
else:
datafile = os.path.join(calibre_path, book_path, filename)
try:
file_ = open(os.path.join(calibre_path, book_path, filename), 'rb')
if config.config_binariesdir:
datafile = cls._embed_metadata(calibre_path, book_path, filename, datafile)
file_ = open(datafile, 'rb')
data = file_.read()
file_.close()
if config.config_binariesdir:
os.remove(datafile)
except IOError as e:
log.error_or_exception(e, stacklevel=3)
log.error(u'The requested file could not be read. Maybe wrong permissions?')
@ -270,3 +281,17 @@ class TaskEmail(CalibreTask):
def __str__(self):
return "E-mail {}, {}".format(self.name, self.subject)
def _embed_metadata(self, calibre_path, book_path, filename, datafile):
datafile_tmp = os.path.join(calibre_path, book_path, "tmp_" + filename)
path_opf = os.path.join(calibre_path, book_path, "metadata.opf")
copy(datafile, datafile_tmp)
calibredb_binarypath = os.path.join(config.config_binariesdir, SUPPORTED_CALIBRE_BINARIES["ebook-meta"])
opf_command = [calibredb_binarypath, datafile_tmp, "--from-opf", path_opf]
p = process_open(opf_command)
_, err = p.communicate()
if err:
# ToDo: Improve error handling
log.error('Metadata embedder encountered an error: %s', err)
return datafile_tmp