def insertWebsite(self, url, domain):
		'''增加一个网页,标记为未访问,并对相应的domain增加其入度'''
		cur = self.conn.cursor()
		cur.execute("SELECT 1 FROM Domains WHERE domain=?", (domain,))
		result = cur.fetchone()
		if not result:
			# 未有对应domain记录, 先创建domain, 把入度设为1
			if VERBOSE:
				print 'Spot Domain:',domain
			self.insertDomain(domain, indegree=1)
			cur.execute("SELECT did FROM Domains WHERE domain=?", (domain,))
			did = cur.fetchone()[0]
		else:
			did = result[0]
			# 对应的domain记录已经存在, 对其入度+1
			cur.execute("UPDATE Domains SET outdegree=outdegree+1 WHERE domain=?", (domain,))

		cur.execute("INSERT INTO Websites VALUES (NULL,?,?,NULL,0)", (did, url,))
		# 写入到文件
		self.conn.commit()
def update_message_data_string(self):
        fuz_start = self.current_label_start
        fuz_end = self.current_label_end
        num_proto_bits = 10
        num_fuz_bits = 16

        proto_start = fuz_start - num_proto_bits
        preambel = "... "
        if proto_start <= 0:
            proto_start = 0
            preambel = ""

        proto_end = fuz_end + num_proto_bits
        postambel = " ..."
        if proto_end >= len(self.message_data) - 1:
            proto_end = len(self.message_data) - 1
            postambel = ""

        fuzamble = ""
        if fuz_end - fuz_start > num_fuz_bits:
            fuz_end = fuz_start + num_fuz_bits
            fuzamble = "..."

        self.ui.lPreBits.setText(preambel + self.message_data[proto_start:self.current_label_start])
        self.ui.lFuzzedBits.setText(self.message_data[fuz_start:fuz_end] + fuzamble)
        self.ui.lPostBits.setText(self.message_data[self.current_label_end:proto_end] + postambel)
        self.set_add_spinboxes_maximum_on_label_change()