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py3: Port DeVendor

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Kovid Goyal 2019-04-01 14:58:41 +05:30
parent 38686dd905
commit 02ff98d8dc
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 24 additions and 10 deletions
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34
src/calibre/startup.py
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@ -17,15 +17,16 @@ builtins.__dict__['_'] = lambda s: s
# immediately translated to the environment language
builtins.__dict__['__'] = lambda s: s
from calibre.constants import iswindows, preferred_encoding, plugins, isosx, islinux, isfrozen, DEBUG, isfreebsd
from calibre.constants import iswindows, preferred_encoding, plugins, isosx, islinux, isfrozen, DEBUG, isfreebsd, ispy3
_run_once = False
winutil = winutilerror = None
if not _run_once:
_run_once = True
from importlib import import_module
if not isfrozen:
if not isfrozen and not ispy3:
# Prevent PyQt4 from being loaded
class PyQt4Ban(object):
@ -40,15 +41,28 @@ if not _run_once:
class DeVendor(object):
def find_module(self, fullname, path=None):
if fullname == 'calibre.web.feeds.feedparser' or fullname.startswith('calibre.ebooks.markdown'):
return self
if ispy3:
def load_module(self, fullname):
from importlib import import_module
if fullname == 'calibre.web.feeds.feedparser':
return import_module('feedparser')
return import_module(fullname[len('calibre.ebooks.'):])
def find_spec(self, fullname, path, target=None):
spec = None
if fullname == 'calibre.web.feeds.feedparser':
m = import_module('feedparser')
spec = m.__spec__
elif fullname.startswith('calibre.ebooks.markdown'):
m = import_module(fullname[len('calibre.ebooks.'):])
spec = m.__spec__
return spec
else:
def find_module(self, fullname, path=None):
if fullname == 'calibre.web.feeds.feedparser' or fullname.startswith('calibre.ebooks.markdown'):
return self
def load_module(self, fullname):
if fullname == 'calibre.web.feeds.feedparser':
return import_module('feedparser')
return import_module(fullname[len('calibre.ebooks.'):])
sys.meta_path.insert(0, DeVendor())