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\Indexables
*/
/**
* Class WPSEO_Term_Indexable.
*/
class WPSEO_Term_Indexable extends WPSEO_Indexable {
/**
* The updateable fields.
*
* @var array
*/
protected $updateable_fields = [
'canonical',
'title',
'description',
'breadcrumb_title',
'og_title',
'og_description',
'og_image',
'twitter_title',
'twitter_description',
'twitter_image',
'is_robots_noindex',
'primary_focus_keyword',
'primary_focus_keyword',
'primary_focus_keyword_score',
'readability_score',
];
/**
* Creates a new Indexable from a passed object.
*
* @param int $object_id The object ID to create the object for.
*
* @return WPSEO_Indexable The indexable.
*
* @throws WPSEO_Invalid_Argument_Exception Thrown if the passed ID is not for an object of type 'term'.
*/
public static function from_object( $object_id ) {
$term = WPSEO_Term_Object_Type::from_object( $object_id );
$term_object_id = $term->get_id();
return new self(
[
'object_id' => $term_object_id,
'object_type' => $term->get_type(),
'object_subtype' => $term->get_subtype(),
'permalink' => $term->get_permalink(),
'canonical' => self::get_meta_value( 'canonical', $term ),
'title' => self::get_meta_value( 'title', $term ),
'description' => self::get_meta_value( 'desc', $term ),
'breadcrumb_title' => self::get_meta_value( 'bctitle', $term ),
'og_title' => self::get_meta_value( 'opengraph-title', $term ),
'og_description' => self::get_meta_value( 'opengraph-description', $term ),
'og_image' => self::get_meta_value( 'opengraph-image', $term ),
'twitter_title' => self::get_meta_value( 'twitter-title', $term ),
'twitter_description' => self::get_meta_value( 'twitter-description', $term ),
'twitter_image' => self::get_meta_value( 'twitter-image', $term ),
'is_robots_noindex' => self::get_robots_noindex_value( self::get_meta_value( 'noindex', $term ) ),
'is_robots_nofollow' => null,
'is_robots_noarchive' => null,
'is_robots_noimageindex' => null,
'is_robots_nosnippet' => null,
'primary_focus_keyword' => self::get_meta_value( 'focuskw', $term ),
'primary_focus_keyword_score' => (int) self::get_meta_value( 'linkdex', $term ),
'readability_score' => (int) self::get_meta_value( 'content_score', $term ),
'is_cornerstone' => false,
'link_count' => null,
'incoming_link_count' => null,
'created_at' => null,
'updated_at' => null,
]
);
}
/**
* Updates the data and returns a new instance.
*
* @param array $data The data to update into a new instance.
*
* @return WPSEO_Indexable A new instance with the updated data.
*/
public function update( $data ) {
$data = array_merge( $this->data, $this->filter_updateable_data( $data ) );
return new self( $data );
}
/**
* Returns the needed term meta field.
*
* @param string $field The requested field.
* @param WPSEO_Term_Object_Type $term The term object.
*
* @return bool|mixed The value of the requested field.
*/
protected static function get_meta_value( $field, $term ) {
return WPSEO_Taxonomy_Meta::get_term_meta( $term->get_id(), $term->get_subtype(), $field );
}
/**
* Converts the meta value to a boolean value.
*
* @param string $value The value to convert.
*
* @return bool|null The converted value.
*/
protected static function get_robots_noindex_value( $value ) {
if ( $value === 'noindex' ) {
return true;
}
if ( $value === 'index' ) {
return false;
}
return null;
}
}