-import sys
+# Erebus IRC bot - Author: John Runyon
+# module loading/unloading/tracking code
+
+from __future__ import print_function
+
+import sys, time
+import modlib
+
+if sys.version_info.major >= 3:
+ from importlib import reload
modules = {}
+dependents = {}
+#dependents[modname] = [list of modules which depend on modname]
def isloaded(modname): return modname in modules
-def modhas(modname, attname): return getattr(self.modules[modname], attname, None) is not None
+def modhas(modname, attname): return getattr(modules[modname], attname, None) is not None
+
+def load(parent, modname, dependent=False):
+ #wrapper to call _load and print return
+ if dependent:
+ print("(Loading dependency %s..." % (modname), end=' ')
+ else:
+ print("%09.3f [MOD] [?] Loading %s..." % (time.time() % 100000, modname), end=' ')
+ modstatus = _load(parent, modname, dependent)
+ if not modstatus:
+ if dependent:
+ print("failed: %s)" % (modstatus), end=' ')
+ else:
+ print("failed: %s." % (modstatus))
+ elif modstatus == True:
+ if dependent:
+ print("OK)", end=' ')
+ else:
+ print("OK.")
+ else:
+ if dependent:
+ print("OK: %s)" % (modstatus), end=' ')
+ else:
+ print("OK: %s." % (modstatus))
+ return modstatus
-def load(parent, modname):
+def _load(parent, modname, dependent=False):
+ successstatus = []
if not isloaded(modname):
- mod = __import__(modname)
+ try:
+ mod = __import__('modules.'+modname, globals(), locals(), ['*'], 0)
+ # ^ fromlist doesn't actually do anything(?) but it means we don't have to worry about this returning the top-level "modules" object
+ reload(mod) #in case it's been previously loaded.
+ except Exception as e:
+ return modlib.error(e)
+
+
+ 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 bool(int(parent.cfg.get('autoloads', dep, default=1))):
+ if dep not in modules:
+ depret = load(parent, dep, dependent=True)
+ if depret is not None and not depret:
+ return depret
+ else:
+ return modlib.error("dependent %s disabled" % (dep))
+ dependents[dep].append(modname)
+
+ for dep in mod.modinfo['softdeps']:
+ if bool(int(parent.cfg.get('autoloads', dep, default=1))):
+ if dep not in modules:
+ depret = load(parent, dep, dependent=True)
+ if depret is not None:
+ if not depret:
+ successstatus.append("softdep %s failed" % (dep))
+ else:
+ successstatus.append("softdep %s disabled" % (dep))
+ #swallow errors loading - softdeps are preferred, not required
+
+
ret = mod.modstart(parent)
+ if ret is None:
+ ret = True
if not ret:
del modules[modname]
- return ret
- else:
- return -1
+ del dependents[modname]
+ for dep in mod.modinfo['depends']:
+ dependents[dep].remove(modname)
+
+ successstatus = ';'.join(successstatus)
+ if len(successstatus) > 0 and ret:
+ if ret == True:
+ return successstatus
+ else:
+ return "%s (%s)" % (ret, successstatus)
+ else:
+ return ret
+ else: #if not isloaded...else:
+ return modlib.error('already loaded')
def unload(parent, modname):
if isloaded(modname):
- self.modules[modname].modstop(parent)
+ for dependent in dependents[modname]:
+ unload(parent, dependent)
+ for dep in modules[modname].modinfo['depends']:
+ dependents[dep].remove(modname)
+ ret = modules[modname].modstop(parent)
+ del modules[modname]
+ return ret
else:
- return -1
+ return modlib.error('already unloaded')
def reloadmod(parent, modname):
if isloaded(modname):
- if modhas(modname, 'modrestart'): self.modules[modname].modrestart(parent)
- else: self.modules[modname].modstop(parent)
+ if modhas(modname, 'modrestart'): modules[modname].modrestart(parent)
+ else: modules[modname].modstop(parent)
- reload(self.modules[modname])
+ try:
+ reload(modules[modname])
+ except BaseException as e:
+ return modlib.error(e)
- if modhas(modname, 'modrestarted'): self.modules[modname].modrestarted(parent)
- else: self.modules[modname].modstart(parent)
+ if modhas(modname, 'modrestarted'): ret = modules[modname].modrestarted(parent)
+ else: ret = modules[modname].modstart(parent)
+ return ret
else:
- load(parent, modname)
+ return load(parent, modname)
+
def loadall(parent, modlist):
for m in modlist: load(parent, m)
for m in modlist: unload(parent, m)
def reloadall(parent, modlist):
for m in modlist: reloadmod(parent, m)
-
-sys.path.append('modules')