rundttm = datetime.now()
		prevdttm = None
		thisyear = rundttm.year
		
		logf = open(filename, "r")
		
		for line in logf:
			if self.re_raw.match(line):
				rmat = self.re_raw.match(line)
				rday, rmon, rhr, rmin = int(rmat.group(1)), self.lu_month[rmat.group(2)], int(rmat.group(3)), int(rmat.group(4))
				
				if prevdttm and datetime(thisyear, rmon, rday, rhr) < datetime(prevdttm.year, prevdttm.month, prevdttm.day, prevdttm.hour):
					for item in (itm for itm in self.contents if itm.dttm):
						item.dttm = datetime(item.dttm.year-1, item.dttm.month, item.dttm.day, item.dttm.hour, item.dttm.minute)
				elif datetime(thisyear, rmon, rday, rhr) > datetime(rundttm.year, rundttm.month, rundttm.day, rundttm.hour):
					thisyear -= 1
					
					for item in (itm for itm in self.contents if itm.dttm):
						item.dttm = datetime(item.dttm.year-1, item.dttm.month, item.dttm.day, item.dttm.hour, item.dttm.minute)
							
				ldttm = datetime(thisyear, rmon, rday, rhr, rmin)
				
				ltext = rmat.group(5)
				
				if self.re_nickchange.match(ltext):
					ncmat = self.re_nickchange.match(ltext)
					lold, laddr, lnew = ncmat.group(1), ncmat.group(2), ncmat.group(3)
					self.contents.append(nickchange.NickChange(ldttm, lnew, lold, laddr))
				elif self.re_quit.match(ltext):
					qmat = self.re_quit.match(ltext)
					lnick, laddr, lqmsg = qmat.group(1), qmat.group(2), qmat.group(3)
					self.contents.append(userquit.UserQuit(ldttm, lqmsg, lnick, laddr))
				elif self.re_ownnick.match(ltext):
					onmat = self.re_ownnick.match(ltext)
					lnick = onmat.group(1)
					self.contents.append(nickchange.NickChange(ldttm, lnick))
				else:
					self.contents.append(simpleline.SimpleLine(ldttm, ltext))
					
				prevdttm = ldttm