Current File : /var/www/pn/beta/64801_wp-content/plugins/autodescription/inc/classes/feed.class.php
<?php
/**
* @package The_SEO_Framework\Classes
*/
namespace The_SEO_Framework;
defined( 'ABSPATH' ) or die;
/**
* The SEO Framework plugin
* Copyright (C) 2015 - 2018 Sybre Waaijer, CyberWire (https://cyberwire.nl/)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Class The_SEO_Framework\Feed
*
* Influences WordPress feeds.
* "Report Cybr for Feeding." - General EUW League of Legends player.
*
* @since 2.8.0
*/
class Feed extends Cache {
/**
* Constructor, load parent constructor and run functions.
*/
protected function __construct() {
parent::__construct();
}
/**
* Initializes feed actions and hooks.
*
* @since 2.9.0
* @access private
*
* @return void Early if this request isn't for a feed.
*/
public function _init_feed_output() {
if ( ! $this->is_feed() )
return;
\add_filter( 'the_content_feed', array( $this, 'the_content_feed' ), 10, 2 );
//* Only add the feed link to the excerpt if we're only building excerpts.
if ( $this->rss_uses_excerpt() )
\add_filter( 'the_excerpt_rss', array( $this, 'the_content_feed' ), 10, 1 );
}
/**
* Determines whether the WordPress excerpt RSS feed option is used.
*
* @since 2.6.0
*
* @return bool
*/
public function rss_uses_excerpt() {
return (bool) \get_option( 'rss_use_excerpt' );
}
/**
* Changes feed's content based on options.
*
* This method converts the input $content to an excerpt and is able to add
* a nofollow backlink at the end of the feed.
*
* @since 2.5.2
*
* @param $content The feed's content.
* @param $feed_type The feed type (not used in excerpted content)
* @return string The modified feed entry.
*/
public function the_content_feed( $content = '', $feed_type = null ) {
if ( ! $content )
return '';
/**
* Don't alter already-excerpts or descriptions.
* $feed_type is only set on 'the_content_feed' filter.
*/
if ( isset( $feed_type ) && $this->get_option( 'excerpt_the_feed' ) ) {
$content = $this->convert_feed_entry_to_excerpt( $content );
}
if ( $this->get_option( 'source_the_feed' ) ) {
$content .= PHP_EOL . $this->get_feed_entry_source_link();
}
return $content;
}
/**
* Converts feed content to excerpt.
*
* @since 2.9.0
*
* @param string $content The full feed entry content.
* @return string The excerpted feed.
*/
protected function convert_feed_entry_to_excerpt( $content = '' ) {
if ( ! $content )
return '';
//* Strip all code and lines.
$excerpt = $this->s_excerpt_raw( $content, false );
$excerpt_len = (int) mb_strlen( $excerpt );
/**
* Applies filters the_seo_framework_max_content_feed_length : The max excerpt length.
* @since 2.5.2
*/
$max_len = (int) \apply_filters( 'the_seo_framework_max_content_feed_length', 400 );
//* Generate excerpt.
$excerpt = $this->trim_excerpt( $excerpt, $excerpt_len, $max_len );
$h2_output = '';
if ( 0 === strpos( $content, '<h2>' ) ) {
//* Add the h2 title back
$h2_end = mb_strpos( $content, '</h2>' );
if ( false !== $h2_end ) {
//* Start of content, plus <h2>
$h2_start = 4;
//* Remove the length of <h2>, again.
$h2_end = $h2_end - $h2_start;
//* Fetch h2 content.
$h2_content = mb_substr( $content, $h2_start, $h2_end );
//* Remove the H2 content from the excerpt.
$count = 1;
$excerpt = str_replace( $h2_content, '', $excerpt, $count );
//* Wrap h2 content in h2 tags.
$h2_output = '<h2>' . $h2_content . '</h2>' . PHP_EOL;
}
}
$content = $h2_output . '<p>' . trim( $excerpt ) . '</p>';
return $content;
}
/**
* Generates and returns feed source link.
*
* @since 2.9.0
* @since 3.0.0 Now uses plain permalink, rather than enhanced canonical URL.
*
* @return string The translatable feed entry source link.
*/
protected function get_feed_entry_source_link() {
/**
* Applies filters 'the_seo_framework_feed_source_link' : string
*
* @since 2.6.0
* @since 2.7.2 or 2.7.3: Escaped output.
*
* @param string $source The source indication string.
*/
$source_i18n = (string) \apply_filters( 'the_seo_framework_feed_source_link_text', \_x( 'Source', 'The content source', 'autodescription' ) );
$content = '<p><a href="' . \esc_url( \get_permalink() ) . '" rel="nofollow">' . \esc_html( $source_i18n ) . '</a></p>';
return $content;
}
}
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