New plugin loader

__init__.py

import os, inspect

pList = { }
mList = defaultdict(list)

def plugin(cls):
    #Using inspect, figure out what file is calling this function (using @plugin)
    clsFile = inspect.stack()[1][1]
    
    #Split the path, because it will be in the form "plugins" + os.sep + "*.py"
    modFile = clsFile.split(os.sep)[1]
    
    #Append the class name to the list indexed by module file name
    mList[modFile].append(cls.__name__)
    
    #Set class (plugin) name to the class (plugin) reference
    pList[cls.__name__] = cls
    
    #return cls, since decorators must return the "new" type
    return cls

def refresh(pluginName = None):
    if pluginName is None:
        _files = [os.sep.join("plugins", f) for f in os.listdir("plugins") if f != "__init__.py" and not f.endswith(".pyc") and not os.path.isdir(os.path.join("plugins",f))]

        for f in _files:
            env = {"plugin":plugin}
            execfile(f, {}, env)
    else:
        for f,classes in mList:
            if pluginName in classes:
                env = {"plugin":plugin}
                execfile(os.sep.join("plugins", f), {}, env)

def getPluginClass(name):
    try:
        return pList[name]
    except KeyError:
        return None