mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-29 11:06:02 +00:00
123 lines
3.5 KiB
Python
123 lines
3.5 KiB
Python
import re
|
|
import collections
|
|
from . import compat
|
|
|
|
|
|
def coerce_string_conf(d):
|
|
result = {}
|
|
for k, v in d.items():
|
|
if not isinstance(v, compat.string_types):
|
|
result[k] = v
|
|
continue
|
|
|
|
v = v.strip()
|
|
if re.match(r'^[-+]?\d+$', v):
|
|
result[k] = int(v)
|
|
elif re.match(r'^[-+]?(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][-+]?\d+)?$', v):
|
|
result[k] = float(v)
|
|
elif v.lower() in ('false', 'true'):
|
|
result[k] = v.lower() == 'true'
|
|
elif v == 'None':
|
|
result[k] = None
|
|
else:
|
|
result[k] = v
|
|
return result
|
|
|
|
|
|
class PluginLoader(object):
|
|
def __init__(self, group):
|
|
self.group = group
|
|
self.impls = {}
|
|
|
|
def load(self, name):
|
|
if name in self.impls:
|
|
return self.impls[name]()
|
|
else: # pragma NO COVERAGE
|
|
import pkg_resources
|
|
for impl in pkg_resources.iter_entry_points(
|
|
self.group, name):
|
|
self.impls[name] = impl.load
|
|
return impl.load()
|
|
else:
|
|
raise self.NotFound(
|
|
"Can't load plugin %s %s" % (self.group, name)
|
|
)
|
|
|
|
def register(self, name, modulepath, objname):
|
|
def load():
|
|
mod = __import__(modulepath, fromlist=[objname])
|
|
return getattr(mod, objname)
|
|
self.impls[name] = load
|
|
|
|
class NotFound(Exception):
|
|
"""The specified plugin could not be found."""
|
|
|
|
|
|
class memoized_property(object):
|
|
"""A read-only @property that is only evaluated once."""
|
|
def __init__(self, fget, doc=None):
|
|
self.fget = fget
|
|
self.__doc__ = doc or fget.__doc__
|
|
self.__name__ = fget.__name__
|
|
|
|
def __get__(self, obj, cls):
|
|
if obj is None:
|
|
return self
|
|
obj.__dict__[self.__name__] = result = self.fget(obj)
|
|
return result
|
|
|
|
|
|
def to_list(x, default=None):
|
|
"""Coerce to a list."""
|
|
if x is None:
|
|
return default
|
|
if not isinstance(x, (list, tuple)):
|
|
return [x]
|
|
else:
|
|
return x
|
|
|
|
|
|
class KeyReentrantMutex(object):
|
|
|
|
def __init__(self, key, mutex, keys):
|
|
self.key = key
|
|
self.mutex = mutex
|
|
self.keys = keys
|
|
|
|
@classmethod
|
|
def factory(cls, mutex):
|
|
# this collection holds zero or one
|
|
# thread idents as the key; a set of
|
|
# keynames held as the value.
|
|
keystore = collections.defaultdict(set)
|
|
|
|
def fac(key):
|
|
return KeyReentrantMutex(key, mutex, keystore)
|
|
return fac
|
|
|
|
def acquire(self, wait=True):
|
|
current_thread = compat.threading.current_thread().ident
|
|
keys = self.keys.get(current_thread)
|
|
if keys is not None and \
|
|
self.key not in keys:
|
|
# current lockholder, new key. add it in
|
|
keys.add(self.key)
|
|
return True
|
|
elif self.mutex.acquire(wait=wait):
|
|
# after acquire, create new set and add our key
|
|
self.keys[current_thread].add(self.key)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def release(self):
|
|
current_thread = compat.threading.current_thread().ident
|
|
keys = self.keys.get(current_thread)
|
|
assert keys is not None, "this thread didn't do the acquire"
|
|
assert self.key in keys, "No acquire held for key '%s'" % self.key
|
|
keys.remove(self.key)
|
|
if not keys:
|
|
# when list of keys empty, remove
|
|
# the thread ident and unlock.
|
|
del self.keys[current_thread]
|
|
self.mutex.release()
|