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import glob, imp, inspect, os
class ModuleManager(object):
def __init__(self, bot, directory="modules"):
self.bot = bot
self.directory = directory
self.modules = {}
def list_modules(self):
return sorted(glob.glob(os.path.join(self.directory, "*.py")))
def load_module(self, filename):
name = os.path.basename(filename).rsplit(".py", 1)[0]
with open(filename) as module_file:
while True:
line = module_file.readline().strip()
if line and line.startswith("#--"):
# this is a hashflag
if line == "#--ignore":
# nope, ignore this module.
return None
else:
break
module = imp.load_source("bitbot_%s" % name, filename)
assert hasattr(module, "Module"
), "module '%s' doesn't have a Module class."
assert inspect.isclass(module.Module
), "module '%s' has a Module attribute but it is not a class."
module_object = module.Module(self.bot)
if not hasattr(module_object, "_name"):
module_object._name = name.title()
return module_object
def load_modules(self):
for filename in self.list_modules():
module = self.load_module(filename)
if module:
assert not module._name in self.modules, (
"module name '%s' attempted to be used twice.")
self.modules[module._name] = module
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