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<?php
namespace WP_Rocket\Engine\Cache;
use DirectoryIterator;
use Exception;
use WP_Term;
use WP_Post;
/**
* Cache Purge handling class
*/
class Purge {
/**
* Filesystem instance
*
* @var WP_Filesystem_Direct
*/
private $filesystem;
/**
* Initialize the class
*
* @param WP_Filesystem_Direct $filesystem Filesystem instance.
*/
public function __construct( $filesystem ) {
$this->filesystem = $filesystem;
}
/**
* Purges cache for the dates archives of a post
*
* @param WP_Post $post Post object.
* @return void
*/
public function purge_dates_archives( $post ) {
foreach ( $this->get_dates_archives( $post ) as $url ) {
$this->purge_url( $url, true );
}
}
/**
* Purge URL cache.
*
* @param string $url URL to be purged.
* @param boolean $pagination Purge also pagination.
* @return void
*/
public function purge_url( $url, $pagination = false ) {
if ( ! is_string( $url ) ) {
return;
}
global $wp_rewrite;
$parsed_url = $this->parse_url( $url );
foreach ( _rocket_get_cache_dirs( $parsed_url['host'] ) as $dir ) {
$path = $dir . $parsed_url['path'];
if ( ! $this->filesystem->exists( $path ) ) {
continue;
}
foreach ( $this->get_iterator( $path ) as $item ) {
if ( $item->isFile() ) {
$this->filesystem->delete( $item->getPathname() );
}
}
if ( $pagination ) {
$this->maybe_remove_dir( $path . DIRECTORY_SEPARATOR . $wp_rewrite->pagination_base );
}
}
}
/**
* Gets the dates archives URLs for the provided post
*
* @param WP_Post $post Post object.
* @return array
*/
private function get_dates_archives( $post ) {
$time = get_the_time( 'Y-m-d', $post );
if ( empty( $time ) ) {
return [];
}
$date = explode( '-', $time );
$urls = [
get_year_link( $date[0] ),
get_month_link( $date[0], $date[1] ),
get_day_link( $date[0], $date[1], $date[2] ),
];
/**
* Filter the list of dates URLs.
*
* @since 1.1.0
*
* @param array $urls List of dates URLs.
*/
return (array) apply_filters( 'rocket_post_dates_urls', $urls );
}
/**
* Parses URL and return the parts array
*
* @since 3.6.1
*
* @param string $url URL to parse.
* @return array
*/
private function parse_url( $url ) {
$parsed_url = get_rocket_parse_url( $url );
/** This filter is documented in inc/front/htaccess.php */
if ( apply_filters( 'rocket_url_no_dots', false ) ) {
$parsed_url['host'] = str_replace( '.', '_', $parsed_url['host'] );
}
return $parsed_url;
}
/**
* Gets the iterator for the given path
*
* @since 3.6.1
*
* @param string $path Absolute path.
* @return DirectoryIterator|array
*/
private function get_iterator( $path ) {
try {
$iterator = new DirectoryIterator( $path );
} catch ( Exception $e ) {
// No action required, as logging not enabled.
$iterator = [];
}
return $iterator;
}
/**
* Recursively remove the provided directory and its content
*
* @since 3.6.1
*
* @param string $dir Absolute path for the directory.
* @return void
*/
private function maybe_remove_dir( $dir ) {
if ( $this->filesystem->is_dir( $dir ) ) {
rocket_rrmdir( $dir, [], $this->filesystem );
}
}
/**
* Purge all terms archives urls associated to a specific post.
*
* @since 3.6.1
*
* @param WP_Post $post Post object.
*/
public function purge_post_terms_urls( WP_Post $post ) {
$urls = $this->get_post_terms_urls( $post );
foreach ( $urls as $url ) {
$this->purge_url( $url, true );
}
/**
* Action to preload urls after cleaning cache.
*
* @param array urls to preload.
*/
do_action( 'rocket_after_clean_terms', $urls );
}
/**
* Get all terms archives urls associated to a specific post.
*
* @since 3.6.1
*
* @param WP_Post $post Post object.
*
* @return array $urls List of taxonomies URLs
*/
private function get_post_terms_urls( WP_Post $post ) {
$urls = [];
$taxonomies = get_object_taxonomies( get_post_type( $post->ID ), 'objects' );
/**
* Filters the taxonomies excluded from post purge
*
* @since 3.9.1
*
* @param array $excluded_taxonomies Array of excluded taxonomies names.
*/
$excluded_taxonomies = apply_filters( 'rocket_exclude_post_taxonomy', [] );
foreach ( $taxonomies as $taxonomy ) {
if (
! $taxonomy->public
||
in_array( $taxonomy->name, $excluded_taxonomies, true )
) {
continue;
}
// Get the terms related to post.
$terms = get_the_terms( $post->ID, $taxonomy->name );
if ( empty( $terms ) || is_wp_error( $terms ) ) {
continue;
}
foreach ( $terms as $term ) {
$term_url = get_term_link( $term->slug, $taxonomy->name );
if ( ! is_wp_error( $term_url ) ) {
$urls[] = $term_url;
}
if ( ! is_taxonomy_hierarchical( $taxonomy->name ) ) {
continue;
}
$ancestors = (array) get_ancestors( $term->term_id, $taxonomy->name );
foreach ( $ancestors as $ancestor ) {
$ancestor_object = get_term( $ancestor, $taxonomy->name );
if ( ! $ancestor_object instanceof WP_Term ) {
continue;
}
$ancestor_term_url = get_term_link( $ancestor_object->slug, $taxonomy->name );
if ( ! is_wp_error( $ancestor_term_url ) ) {
$urls[] = $ancestor_term_url;
}
}
}
}
// Remove entries with empty values in array.
$urls = array_filter( $urls, 'is_string' );
/**
* Filter the list of taxonomies URLs
*
* @since 1.1.0
*
* @param array $urls List of taxonomies URLs
*/
return apply_filters( 'rocket_post_terms_urls', $urls );
}
}