server.py 文件源码

def _cbSelectWork(self, mbox, cmdName, tag):
        """
        Callback for selectWork

        * patched to avoid conformance errors due to incomplete UIDVALIDITY
        line.
        * patched to accept deferreds for messagecount and recent count
        """
        if mbox is None:
            self.sendNegativeResponse(tag, 'No such mailbox')
            return
        if '\\noselect' in [s.lower() for s in mbox.getFlags()]:
            self.sendNegativeResponse(tag, 'Mailbox cannot be selected')
            return

        d1 = defer.maybeDeferred(mbox.getMessageCount)
        d2 = defer.maybeDeferred(mbox.getRecentCount)
        d3 = defer.maybeDeferred(mbox.getUIDNext)
        return defer.gatherResults([d1, d2, d3]).addCallback(
            self.__cbSelectWork, mbox, cmdName, tag)