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ctlmod.py
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ctlmod.py
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# Erebus IRC bot - Author: John Runyon
# module loading/unloading/tracking code
import sys
import modlib
modules = {}
dependents = {}
def isloaded(modname): return modname in modules
def modhas(modname, attname): return getattr(modules[modname], attname, None) is not None
def load(parent, modname):
if not isloaded(modname):
mod = __import__(modname)
reload(mod)
if not hasattr(mod, 'modinfo'):
return modlib.error('no modinfo')
if parent.APIVERSION not in mod.modinfo['compatible']:
return modlib.error('API-incompatible')
modules[modname] = mod
dependents[modname] = []
for dep in mod.modinfo['depends']:
if dep not in modules:
depret = load(parent, dep)
if not depret:
return
dependents[dep].append(modname)
ret = mod.modstart(parent)
if ret is not None and not ret:
del modules[modname]
del dependents[modname]
for dep in mod.modinfo['depends']:
dependents[dep].remove(modname)
return ret
else: #if not isloaded...else:
return modlib.error('already loaded')
def unload(parent, modname):
if isloaded(modname):
for dependent in dependents[modname]:
unload(parent, dependent)
for dep in dependents[modname]:
dependents[dep].remove(modname)
ret = modules[modname].modstop(parent)
del modules[modname]
return ret
else:
return modlib.error('already unloaded')
def reloadmod(parent, modname):
if isloaded(modname):
if modhas(modname, 'modrestart'): modules[modname].modrestart(parent)
else: modules[modname].modstop(parent)
reload(modules[modname])
if modhas(modname, 'modrestarted'): modules[modname].modrestarted(parent)
else: modules[modname].modstart(parent)
else:
load(parent, modname)
def loadall(parent, modlist):
for m in modlist: load(parent, m)
def unloadall(parent, modlist):
for m in modlist: unload(parent, m)
def reloadall(parent, modlist):
for m in modlist: reloadmod(parent, m)
sys.path.append('modules')