晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <stdbool.h>
#include <isc/lang.h>
#include <isc/types.h>
#include <dns/types.h>
#include <dns/db.h>
#ifndef DNS_PRIVATE_H
#define DNS_PRIVATE_H
ISC_LANG_BEGINDECLS
isc_result_t
dns_private_chains(dns_db_t *db, dns_dbversion_t *ver,
dns_rdatatype_t privatetype,
bool *build_nsec, bool *build_nsec3);
/*%<
* Examine the NSEC, NSEC3PARAM and privatetype RRsets at the apex of the
* database to determine which of NSEC or NSEC3 chains we are currently
* maintaining. In normal operations only one of NSEC or NSEC3 is being
* maintained but when we are transitiong between NSEC and NSEC3 we need
* to update both sets of chains. If 'privatetype' is zero then the
* privatetype RRset will not be examined.
*
* Requires:
* \li 'db' is valid.
* \li 'version' is valid or NULL.
* \li 'build_nsec' is a pointer to a bool or NULL.
* \li 'build_nsec3' is a pointer to a bool or NULL.
*
* Returns:
* \li ISC_R_SUCCESS, 'build_nsec' and 'build_nsec3' will be valid.
* \li other on error
*/
isc_result_t
dns_private_totext(dns_rdata_t *privaterdata, isc_buffer_t *buffer);
/*%<
* Convert a private-type RR 'privaterdata' to human-readable form,
* and place the result in 'buffer'. The text should indicate
* which action the private-type record specifies and whether the
* action has been completed.
*
* Requires:
* \li 'privaterdata' is a valid rdata containing at least five bytes
* \li 'buffer' is a valid buffer
*
* Returns:
* \li ISC_R_SUCCESS
* \li other on error
*/
ISC_LANG_ENDDECLS
#endif