import signal

from functools import partial

from validate import vInteger

from error import ValidateException

    def read(self,files):

        from offer import providers

        ConfigParser.read(self, files)

        for s in self.sections():

            if s == "main":

                opts=main

            else:

                opts=providers[self.get(s,'typ')].options

            for o in opts:

                try:

                    opts[o].validate(self.get(s,o),o)

                except ValidateException:

                    if opts[o].must:

                        raise

    def reload_(self):

        for f in self.reloadList:

class Option():

    def __init__(self, validate, long="", help="", must=False, default=None):

        self.validate = validate

        self.long=long

        self.help = help

        self.must = must

        self.default = default

def readConfig():

    config.read(confFiles)

    config.reload()

def registerSignal():

    '''register readConfig to SIGUSR2'''

    def rC(signal, frame):

        readConfig()

    signal.signal(signal.SIGUSR2,rC)

confFiles=["iro.conf", "~/iro.conf","/etc/iro/iro.conf"]

main={"hostname":Option(lambda x,y:x,long="Hostname under that twisted is running",must=True),

        "port":Option(partial(vInteger,minv=0),long="Port under that twisted is running",must=True),

        }