update

wp-content/plugins/xml-sitemap-generator-for-google/includes/Cache.php

@@ -0,0 +1,174 @@
+<?php
+
+namespace GRIM_SG;
+
+use GRIM_SG\Vendor\Controller;
+
+class Cache extends Controller {
+	private static $max_chunk_size = 500000;
+	private static $prefix         = 'sgg_cache_';
+
+	public static $sitemaps = array(
+		'sitemap',
+		'inner-sitemap',
+		'google-news',
+		'image-sitemap',
+		'video-sitemap',
+	);
+
+	public $sitemap;
+
+	public $inner_sitemap;
+	public $current_page;
+
+	public function __construct( $sitemap = 'sitemap', $inner_sitemap = null, $current_page = null ) {
+		$this->sitemap       = $this->get_multilingual_sitemap_name( $sitemap );
+		$this->inner_sitemap = $inner_sitemap;
+		$this->current_page  = $current_page ?? '';
+	}
+
+	public function set( $urls ) {
+		$expiration  = self::get_expiration( $this->get_settings() );
+		$option_name = self::$prefix . $this->sitemap;
+
+		if ( $this->inner_sitemap ) {
+			$cached_urls = get_transient( $option_name );
+
+			if ( empty( $cached_urls ) ) {
+				$cached_urls = array();
+			}
+
+			if ( ! empty( $urls[ $this->inner_sitemap ] ) ) {
+				$cached_urls[ $this->inner_sitemap . $this->current_page ] = $urls[ $this->inner_sitemap ];
+			}
+
+			$urls = $cached_urls;
+		}
+
+		// Only apply splitting for Media Sitemaps.
+		if ( strpos( $this->sitemap, 'media-' ) === 0 ) {
+			$serialized = maybe_serialize( $urls );
+			if ( strlen( $serialized ) > self::$max_chunk_size ) {
+				$chunks = str_split( $serialized, self::$max_chunk_size );
+
+				foreach ( $chunks as $i => $chunk ) {
+					set_transient( $option_name . '_chunk_' . $i, $chunk, $expiration );
+				}
+
+				set_transient( $option_name . '_chunks', count( $chunks ), $expiration );
+				set_transient( $option_name . '_time', time(), $expiration );
+
+				return;
+			}
+		}
+
+		set_transient( $option_name, $urls, $expiration );
+		set_transient( $option_name . '_time', time(), $expiration );
+	}
+
+	public function get() {
+		$option_name = self::$prefix . $this->sitemap;
+
+		// Check if the data was saved in chunks.
+		$chunks_count = get_transient( $option_name . '_chunks' );
+		if ( false !== $chunks_count ) {
+			$serialized = '';
+
+			for ( $i = 0; $i < $chunks_count; $i ++ ) {
+				$chunk = get_transient( $option_name . '_chunk_' . $i );
+				if ( false === $chunk ) {
+					return null;
+				}
+
+				$serialized .= $chunk;
+			}
+
+			$urls = maybe_unserialize( $serialized );
+		} else {
+			$urls = get_transient( $option_name );
+		}
+
+		if ( $this->inner_sitemap ) {
+			if ( empty( $urls[ $this->inner_sitemap . $this->current_page ] ) ) {
+				return null;
+			}
+
+			return array(
+				$this->inner_sitemap => $urls[ $this->inner_sitemap . $this->current_page ],
+			);
+		}
+
+		return $urls;
+	}
+
+	public static function get_time( $sitemap ) {
+		return get_transient( self::$prefix . $sitemap . '_time' );
+	}
+
+	public static function get_time_formatted( $sitemap ) {
+		$time = self::get_time( $sitemap );
+
+		return $time
+			// translators: %s is Cached Time
+			? sprintf( __( '%s ago', 'xml-sitemap-generator-for-google' ), human_time_diff( $time, time() ) )
+			: __( 'No Cache', 'xml-sitemap-generator-for-google' );
+	}
+
+	public static function delete( $sitemap ): void {
+		$option_name = self::$prefix . $sitemap;
+
+		delete_transient( $option_name );
+		delete_transient( $option_name . '_time' );
+
+		// Delete chunks if they exist.
+		$chunks_count = get_transient( $option_name . '_chunks' );
+		if ( false !== $chunks_count ) {
+			for ( $i = 0; $i < $chunks_count; $i ++ ) {
+				delete_transient( $option_name . '_chunk_' . $i );
+			}
+		}
+
+		delete_transient( $option_name . '_chunks' );
+	}
+
+	public static function clear(): void {
+		foreach ( self::$sitemaps as $sitemap ) {
+			self::delete( $sitemap );
+		}
+	}
+
+	public static function maybe_clear( $expiration ): void {
+		foreach ( self::$sitemaps as $sitemap ) {
+			if ( $expiration < time() - self::get_time( $sitemap ) ) {
+				self::delete( $sitemap );
+			}
+		}
+	}
+
+	public static function get_expiration( $settings ) {
+		return intval( $settings->cache_timeout ?? 24 ) * intval( $settings->cache_timeout_period ?? 3600 );
+	}
+
+	public function get_multilingual_sitemap_name( $sitemap ) {
+		$suffix = '';
+
+		if ( function_exists( 'pll_current_language' ) ) {
+			$suffix = pll_current_language();
+		}
+
+		if ( function_exists( 'trp_get_languages' ) ) {
+			$trp_settings = get_option( 'trp_settings' );
+			$suffix       = $trp_settings['default-language'] ?? null;
+		}
+
+		if ( defined( 'ICL_SITEPRESS_VERSION' ) ) {
+			$suffix = apply_filters( 'wpml_current_language', null );
+		}
+
+		if ( ! empty( $suffix ) ) {
+			$sitemap = "{$sitemap}_{$suffix}";
+		}
+
+		return $sitemap;
+	}
+}