def rescan(self):
"""Rescan all folders for changed/new/removed modules.
The caller should release all references to removed modules.
Returns a tuple: (removed, added)
"""
print_d("Rescanning..")
info = {}
# get what is there atm
for folder in self.__folders:
for name, path, deps in get_importables(folder, True):
# take the basename as module key, later modules win
info[name] = (path, deps)
# python can not unload a module, so we can only add new ones
# or reload if the path is the same and mtime changed,
# but we can still pretend we removed something
removed = []
added = []
# remove those that are gone and changed ones
for name, mod in listitems(self.__modules):
# not here anymore, remove
if name not in info:
del self.__modules[name]
removed.append(name)
continue
# check if any dependency has changed
path, new_deps = info[name]
if mod.has_changed(new_deps):
del self.__modules[name]
removed.append(name)
self.__failures.clear()
# add new ones
for (name, (path, deps)) in iteritems(info):
if name in self.__modules:
continue
try:
# add a real module, so that pickle works
# https://github.com/quodlibet/quodlibet/issues/1093
parent = "quodlibet.fake"
if parent not in sys.modules:
sys.modules[parent] = imp.new_module(parent)
vars(sys.modules["quodlibet"])["fake"] = sys.modules[parent]
mod = load_module(name, parent + ".plugins",
dirname(path), reload=True)
if mod is None:
continue
except Exception as err:
text = format_exception(*sys.exc_info())
self.__failures[name] = ModuleImportError(name, err, text)
else:
added.append(name)
self.__modules[name] = Module(name, mod, deps, path)
print_d("Rescanning done: %d added, %d removed, %d error(s)" %
(len(added), len(removed), len(self.__failures)))
return removed, added
def rescan(self):
"""Rescan all folders for changed/new/removed modules.
The caller should release all references to removed modules.
Returns a tuple: (removed, added)
"""
print_d("Rescanning..")
info = {}
# get what is there atm
for folder in self.__folders:
for name, path, deps in get_importables(folder):
# take the basename as module key, later modules win
info[name] = (path, deps)
# python can not unload a module, so we can only add new ones
# or reload if the path is the same and mtime changed,
# but we can still pretend we removed something
removed = []
added = []
# remove those that are gone and changed ones
for name, mod in list(self.__modules.items()):
# not here anymore, remove
if name not in info:
del self.__modules[name]
removed.append(name)
continue
# check if any dependency has changed
path, new_deps = info[name]
if mod.has_changed(new_deps):
del self.__modules[name]
removed.append(name)
self.__failures.clear()
# add new ones
for (name, (path, deps)) in info.items():
if name in self.__modules:
continue
try:
# add a real module, so that pickle works
# https://github.com/quodlibet/quodlibet/issues/1093
parent = "quodlibet.fake"
if parent not in sys.modules:
sys.modules[parent] = imp.new_module(parent)
vars(sys.modules["quodlibet"])["fake"] = sys.modules[parent]
mod = load_module(name,
parent + ".plugins",
dirname(path),
reload=True)
if mod is None:
continue
except Exception as err:
text = format_exception(*sys.exc_info())
self.__failures[name] = ModuleImportError(name, err, text)
else:
added.append(name)
self.__modules[name] = Module(name, mod, deps, path)
print_d("Rescanning done: %d added, %d removed, %d error(s)" %
(len(added), len(removed), len(self.__failures)))
return removed, added