def read_serialized_metadata(data):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.utils.date import parse_date
mi = OPF(data['opf'], try_to_guess_cover=False, populate_spine=False, basedir=os.path.dirname(data['opf'])).to_book_metadata()
try:
mi.last_modified = parse_date(data['last_modified'])
except:
pass
mi.cover, mi.cover_data = None, (None, None)
cdata = None
if 'cover' in data:
with lopen(data['cover'], 'rb') as f:
cdata = f.read()
return mi, cdata
def update_metadata(ebook, new_opf):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.ebooks.metadata.epub import update_metadata
opfpath = ebook.name_to_abspath(ebook.opf_name)
with ebook.open(ebook.opf_name, "r+b") as stream, open(new_opf, "rb") as ns:
opf = OPF(stream, basedir=os.path.dirname(opfpath), populate_spine=False, unquote_urls=False)
mi = OPF(ns, unquote_urls=False, populate_spine=False).to_book_metadata()
mi.cover, mi.cover_data = None, (None, None)
update_metadata(opf, mi, apply_null=True, update_timestamp=True)
stream.seek(0)
stream.truncate()
stream.write(opf.render())
def read_serialized_metadata(book_id, data):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.utils.date import parse_date
mi = OPF(data['opf'], try_to_guess_cover=False, populate_spine=False, basedir=os.path.dirname(data['opf'])).to_book_metadata()
try:
mi.last_modified = parse_date(data['last_modified'])
except:
pass
mi.cover, mi.cover_data = None, (None, None)
cdata = None
if 'cover' in data:
with lopen(data['cover'], 'rb') as f:
cdata = f.read()
return mi, cdata
def update_metadata(ebook, new_opf):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.ebooks.metadata.epub import update_metadata
opfpath = ebook.name_to_abspath(ebook.opf_name)
with ebook.open(ebook.opf_name, 'r+b') as stream, open(new_opf, 'rb') as ns:
opf = OPF(stream, basedir=os.path.dirname(opfpath), populate_spine=False,
unquote_urls=False)
mi = OPF(ns, unquote_urls=False,
populate_spine=False).to_book_metadata()
mi.cover, mi.cover_data = None, (None, None)
update_metadata(opf, mi, apply_null=True, update_timestamp=True)
stream.seek(0)
stream.truncate()
stream.write(opf.render())