本文整理汇总了Python中calibre.ebooks.metadata.opf2.OPF.is_null方法的典型用法代码示例。如果您正苦于以下问题：Python OPF.is_null方法的具体用法？Python OPF.is_null怎么用？Python OPF.is_null使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类calibre.ebooks.metadata.opf2.OPF的用法示例。
在下文中一共展示了OPF.is_null方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: process_result
# 需要导入模块: from calibre.ebooks.metadata.opf2 import OPF [as 别名]
# 或者: from calibre.ebooks.metadata.opf2.OPF import is_null [as 别名]
def process_result(self, group_id, result):
if result.err:
mi = self.report_metadata_failure(group_id, result.traceback)
paths = self.file_groups[group_id]
has_cover = False
duplicate_info = set() if self.add_formats_to_existing else False
else:
paths, opf, has_cover, duplicate_info = result.value
try:
mi = OPF(BytesIO(opf), basedir=self.tdir, populate_spine=False, try_to_guess_cover=False).to_book_metadata()
mi.read_metadata_failed = False
except Exception:
mi = self.report_metadata_failure(group_id, traceback.format_exc())
if mi.is_null('title'):
for path in paths:
mi.title = os.path.splitext(os.path.basename(path))[0]
break
if mi.application_id == '__calibre_dummy__':
mi.application_id = None
if gprefs.get('tag_map_on_add_rules'):
from calibre.ebooks.metadata.tag_mapper import map_tags
mi.tags = map_tags(mi.tags, gprefs['tag_map_on_add_rules'])
if self.author_map_rules:
from calibre.ebooks.metadata.author_mapper import map_authors
new_authors = map_authors(mi.authors, self.author_map_rules)
if new_authors != mi.authors:
mi.authors = new_authors
if self.db is None:
mi.author_sort = authors_to_sort_string(mi.authors)
else:
mi.author_sort = self.db.author_sort_from_authors(mi.authors)
self.pd.msg = mi.title
cover_path = os.path.join(self.tdir, '%s.cdata' % group_id) if has_cover else None
if self.db is None:
if paths:
self.items.append((mi, cover_path, paths))
return
if self.add_formats_to_existing:
identical_book_ids = find_identical_books(mi, self.find_identical_books_data)
if identical_book_ids:
try:
self.merge_books(mi, cover_path, paths, identical_book_ids)
except Exception:
a = self.report.append
a(''), a('-' * 70)
a(_('Failed to merge the book: ') + mi.title)
[a('\t' + f) for f in paths]
a(_('With error:')), a(traceback.format_exc())
else:
self.add_book(mi, cover_path, paths)
else:
if duplicate_info or icu_lower(mi.title or _('Unknown')) in self.added_duplicate_info:
self.duplicates.append((mi, cover_path, paths))
else:
self.add_book(mi, cover_path, paths)示例2: process_result
# 需要导入模块: from calibre.ebooks.metadata.opf2 import OPF [as 别名]
# 或者: from calibre.ebooks.metadata.opf2.OPF import is_null [as 别名]
def process_result(self, group_id, result):
if result.err:
mi = self.report_metadata_failure(group_id, result.traceback)
paths = self.file_groups[group_id]
has_cover = False
duplicate_info = set() if self.add_formats_to_existing else False
else:
paths, opf, has_cover, duplicate_info = result.value
try:
mi = OPF(
BytesIO(opf), basedir=self.tdir, populate_spine=False, try_to_guess_cover=False
).to_book_metadata()
mi.read_metadata_failed = False
except Exception:
mi = self.report_metadata_failure(group_id, traceback.format_exc())
if mi.is_null("title"):
for path in paths:
mi.title = os.path.splitext(os.path.basename(path))[0]
break
if mi.application_id == "__calibre_dummy__":
mi.application_id = None
if gprefs.get("tag_map_on_add_rules"):
from calibre.ebooks.metadata.tag_mapper import map_tags
mi.tags = map_tags(mi.tags, gprefs["tag_map_on_add_rules"])
self.pd.msg = mi.title
cover_path = os.path.join(self.tdir, "%s.cdata" % group_id) if has_cover else None
if self.db is None:
if paths:
self.items.append((mi, cover_path, paths))
return
if self.add_formats_to_existing:
identical_book_ids = find_identical_books(mi, self.find_identical_books_data)
if identical_book_ids:
try:
self.merge_books(mi, cover_path, paths, identical_book_ids)
except Exception:
a = self.report.append
a(""), a("-" * 70)
a(_("Failed to merge the book: ") + mi.title)
[a("\t" + f) for f in paths]
a(_("With error:")), a(traceback.format_exc())
else:
self.add_book(mi, cover_path, paths)
else:
if duplicate_info or icu_lower(mi.title or _("Unknown")) in self.added_duplicate_info:
self.duplicates.append((mi, cover_path, paths))
else:
self.add_book(mi, cover_path, paths)示例3: main
# 需要导入模块: from calibre.ebooks.metadata.opf2 import OPF [as 别名]
# 或者: from calibre.ebooks.metadata.opf2.OPF import is_null [as 别名]
def main(do_identify, covers, metadata, ensure_fields, tdir):
failed_ids = set()
failed_covers = set()
all_failed = True
log = GUILog()
patch_plugins()
for book_id, mi in metadata.iteritems():
mi = OPF(BytesIO(mi), basedir=tdir,
populate_spine=False).to_book_metadata()
title, authors, identifiers = mi.title, mi.authors, mi.identifiers
cdata = None
log.clear()
if do_identify:
results = []
try:
results = identify(log, Event(), title=title, authors=authors,
identifiers=identifiers)
except:
pass
if results:
all_failed = False
mi = merge_result(mi, results[0], ensure_fields=ensure_fields)
identifiers = mi.identifiers
if not mi.is_null('rating'):
# set_metadata expects a rating out of 10
mi.rating *= 2
with open(os.path.join(tdir, '%d.mi'%book_id), 'wb') as f:
f.write(metadata_to_opf(mi, default_lang='und'))
else:
log.error('Failed to download metadata for', title)
failed_ids.add(book_id)
if covers:
cdata = download_cover(log, title=title, authors=authors,
identifiers=identifiers)
if cdata is None:
failed_covers.add(book_id)
else:
with open(os.path.join(tdir, '%d.cover'%book_id), 'wb') as f:
f.write(cdata[-1])
all_failed = False
with open(os.path.join(tdir, '%d.log'%book_id), 'wb') as f:
f.write(log.plain_text.encode('utf-8'))
return failed_ids, failed_covers, all_failed