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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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin\XML Sitemaps
*/
/**
* Class that handles the Admin side of XML sitemaps.
*/
class WPSEO_Sitemaps_Admin {
/**
* Post_types that are being imported.
*
* @var array
*/
private $importing_post_types = [];
/**
* Class constructor.
*/
public function __construct() {
add_action( 'transition_post_status', [ $this, 'status_transition' ], 10, 3 );
add_action( 'admin_footer', [ $this, 'status_transition_bulk_finished' ] );
WPSEO_Sitemaps_Cache::register_clear_on_option_update( 'wpseo_titles', '' );
WPSEO_Sitemaps_Cache::register_clear_on_option_update( 'wpseo', '' );
}
/**
* Hooked into transition_post_status. Will initiate search engine pings
* if the post is being published, is a post type that a sitemap is built for
* and is a post that is included in sitemaps.
*
* @param string $new_status New post status.
* @param string $old_status Old post status.
* @param \WP_Post $post Post object.
*/
public function status_transition( $new_status, $old_status, $post ) {
if ( $new_status !== 'publish' ) {
return;
}
if ( defined( 'WP_IMPORTING' ) ) {
$this->status_transition_bulk( $new_status, $old_status, $post );
return;
}
$post_type = get_post_type( $post );
wp_cache_delete( 'lastpostmodified:gmt:' . $post_type, 'timeinfo' ); // #17455.
// Not something we're interested in.
if ( $post_type === 'nav_menu_item' ) {
return;
}
// If the post type is excluded in options, we can stop.
if ( WPSEO_Options::get( 'noindex-' . $post_type, false ) ) {
return;
}
/**
* Filter: 'wpseo_allow_xml_sitemap_ping' - Check if pinging is not allowed (allowed by default).
*
* @api boolean $allow_ping The boolean that is set to true by default.
*/
if ( apply_filters( 'wpseo_allow_xml_sitemap_ping', true ) === false ) {
return;
}
if ( defined( 'YOAST_SEO_PING_IMMEDIATELY' ) && YOAST_SEO_PING_IMMEDIATELY ) {
WPSEO_Sitemaps::ping_search_engines();
}
elseif ( ! wp_next_scheduled( 'wpseo_ping_search_engines' ) ) {
wp_schedule_single_event( ( time() + 300 ), 'wpseo_ping_search_engines' );
}
}
/**
* While bulk importing, just save unique post_types.
*
* When importing is done, if we have a post_type that is saved in the sitemap
* try to ping the search engines.
*
* @param string $new_status New post status.
* @param string $old_status Old post status.
* @param \WP_Post $post Post object.
*/
private function status_transition_bulk( $new_status, $old_status, $post ) {
$this->importing_post_types[] = get_post_type( $post );
$this->importing_post_types = array_unique( $this->importing_post_types );
}
/**
* After import finished, walk through imported post_types and update info.
*/
public function status_transition_bulk_finished() {
if ( ! defined( 'WP_IMPORTING' ) ) {
return;
}
if ( empty( $this->importing_post_types ) ) {
return;
}
$ping_search_engines = false;
foreach ( $this->importing_post_types as $post_type ) {
wp_cache_delete( 'lastpostmodified:gmt:' . $post_type, 'timeinfo' ); // #17455.
// Just have the cache deleted for nav_menu_item.
if ( $post_type === 'nav_menu_item' ) {
continue;
}
if ( WPSEO_Options::get( 'noindex-' . $post_type, false ) === false ) {
$ping_search_engines = true;
}
}
// Nothing to do.
if ( $ping_search_engines === false ) {
return;
}
if ( WP_CACHE ) {
do_action( 'wpseo_hit_sitemap_index' );
}
WPSEO_Sitemaps::ping_search_engines();
}
/* ********************* DEPRECATED METHODS ********************* */
/**
* Find sitemaps residing on disk as they will block our rewrite.
*
* @deprecated 7.0
* @codeCoverageIgnore
*/
public function delete_sitemaps() {
_deprecated_function( 'WPSEO_Sitemaps_Admin::delete_sitemaps', '7.0' );
}
/**
* Find sitemaps residing on disk as they will block our rewrite.
*
* @deprecated 7.0
* @codeCoverageIgnore
*/
public function detect_blocking_filesystem_sitemaps() {
_deprecated_function( 'WPSEO_Sitemaps_Admin::delete_sitemaps', '7.0' );
}
}