本文整理汇总了Python中calibre.ebooks.metadata.opf2.OPF.iterspine方法的典型用法代码示例。如果您正苦于以下问题：Python OPF.iterspine方法的具体用法？Python OPF.iterspine怎么用？Python OPF.iterspine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.iterspine方法的1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: convert
# 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 iterspine [as 别名]
def convert(self, stream, options, file_ext, log, accelerators):
"""Convert a KePub file into a structure calibre can process."""
log("KEPUBInput::convert - start")
from calibre.utils.zipfile import ZipFile
from calibre import walk
from calibre.ebooks import DRMError
from calibre.ebooks.metadata.opf2 import OPF
try:
zf = ZipFile(stream)
zf.extractall(os.getcwdu())
except Exception:
log.exception(
"KEPUB appears to be invalid ZIP file, trying a "
"more forgiving ZIP parser"
)
from calibre.utils.localunzip import extractall
stream.seek(0)
extractall(stream)
opf = self.find_opf()
if opf is None:
for f in walk(u"."):
if (
f.lower().endswith(".opf")
and "__MACOSX" not in f
and not os.path.basename(f).startswith(".")
):
opf = os.path.abspath(f)
break
path = getattr(stream, "name", "stream")
if opf is None:
raise ValueError(
_( # noqa: F821
"{0} is not a valid KEPUB file (could not find opf)"
).format(path)
)
encfile = os.path.abspath("rights.xml")
if os.path.exists(encfile):
raise DRMError(os.path.basename(path))
opf = os.path.relpath(opf, os.getcwdu())
parts = os.path.split(opf)
opf = OPF(opf, os.path.dirname(os.path.abspath(opf)))
self.encrypted_fonts = []
if len(parts) > 1 and parts[0]:
delta = "/".join(parts[:-1]) + "/"
for elem in opf.itermanifest():
elem.set("href", delta + elem.get("href"))
for elem in opf.iterguide():
elem.set("href", delta + elem.get("href"))
f = (
self.rationalize_cover3
if opf.package_version >= 3.0
else self.rationalize_cover2
)
self.removed_cover = f(opf, log)
self.optimize_opf_parsing = opf
for x in opf.itermanifest():
if x.get("media-type", "") == "application/x-dtbook+xml":
raise ValueError(
_("EPUB files with DTBook markup are not supported") # noqa: F821
)
not_for_spine = set()
for y in opf.itermanifest():
id_ = y.get("id", None)
if id_ and y.get("media-type", None) in {
"application/vnd.adobe-page-template+xml",
"application/vnd.adobe.page-template+xml",
"application/adobe-page-template+xml",
"application/adobe.page-template+xml",
"application/text",
}:
not_for_spine.add(id_)
seen = set()
for x in list(opf.iterspine()):
ref = x.get("idref", None)
if not ref or ref in not_for_spine or ref in seen:
x.getparent().remove(x)
continue
seen.add(ref)
if len(list(opf.iterspine())) == 0:
raise ValueError(
_("No valid entries in the spine of this EPUB") # noqa: F821
)
with open("content.opf", "wb") as nopf:
nopf.write(opf.render())
return os.path.abspath(u"content.opf")