%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Class LP_Hard_Cache
*
* Cache content in files
*
* @since 3.0.0
*/
class LP_Hard_Cache {
/**
* @var string
*/
protected static $_root_path = '';
/**
* @var string
*/
protected static $_default_group = '';
/**
* @var bool
*/
protected static $_lock = false;
/**
* @var bool
*/
protected static $_hard_lock = false;
/**
* Init
*/
public static function init() {
$upload_dir = wp_upload_dir();
self::$_root_path = trailingslashit( $upload_dir['basedir'] ) . 'lp-cache';
if ( defined( 'LP_HARD_CACHE' ) ) {
self::$_lock = self::$_hard_lock = ! LP_HARD_CACHE;
} else {
self::$_lock = self::$_hard_lock = ! ( 'yes' === LP()->settings()->get( 'enable_hard_cache' ) );
}
if ( self::is_locked() ) {
return;
}
@wp_mkdir_p( self::$_root_path );
}
/**
* Replace existing cache with new data.
*
* @param string $key
* @param mixed $data
* @param string $group
*
* @return bool
*/
public static function replace( $key, $data, $group = '' ) {
if ( self::is_locked() ) {
return false;
}
$file = self::get_file( $key, $group );
if ( ! file_exists( $file ) ) {
return false;
}
return self::write( $key, $data, $group );
}
/**
* Set cache content, replace if existing.
*
* @param string $key
* @param mixed $data
* @param string $group
*
* @return bool
*/
public static function set( $key, $data, $group = '' ) {
if ( self::is_locked() ) {
return false;
}
return self::write( $key, $data, $group, true );
}
/**
* Get cache from file.
*
* @param string $key
* @param string $group
*
* @return bool
*/
public static function get( $key, $group = '' ) {
if ( self::is_locked() ) {
return false;
}
return self::read( $key, $group );
}
/**
* Read content file
*
* @param string $key
* @param string $group
*
* @return bool|mixed
*/
public static function read( $key, $group = '' ) {
if ( self::is_locked() ) {
return false;
}
$file = self::get_file( $key, $group );
if ( file_exists( $file ) ) {
$f = @fopen( $file, 'r' );
$content = fread( $f, filesize( $file ) );
fclose( $f );
if ( ! $content ) {
return false;
}
return LP_Helper::maybe_unserialize( $content );
}
return false;
}
/**
* Write data into file.
*
* @param string $key
* @param mixed $data
* @param string $group
* @param bool $overwrite
*
* @return bool
*/
protected static function write( $key, $data, $group = '', $overwrite = false ) {
if ( self::is_locked() ) {
return false;
}
$file = self::get_file( $key, $group );
/**
* If file exists and overwrite is false
*/
if ( $overwrite && file_exists( $file ) ) {
return false;
}
$f = @fopen( $file, 'w' );
if ( ! $f ) {
return false;
}
fwrite( $f, maybe_serialize( $data ) );
fclose( $f );
return true;
}
/**
* Get file of cache by the key and group.
*
* @param string $key
* @param string $group
*
* @return string
*/
protected static function get_file( $key, $group = '' ) {
if ( self::is_locked() ) {
return false;
}
$path = array( self::$_root_path, $group );
$path = array_filter( $path );
$path = join( '/', $path );
@wp_mkdir_p( $path );
$file = "{$path}/{$key}.cache";
return $file;
}
protected static function get_path( $group = '' ) {
$path = array( self::$_root_path, $group );
$path = array_filter( $path );
$path = join( '/', $path );
return $path;
}
/**
* Enable for updating cache temporary even it is locked.
*/
public static function unlock() {
self::$_lock = false;
}
/**
* Disable for updating cache temporary event it is not locked.
*/
public static function lock() {
self::$_lock = true;
}
/**
* Reset lock to default.
*/
public static function reset_lock() {
self::$_lock = self::$_hard_lock;
}
/**
* Check if cache is locked
*
* @return bool
*/
public static function is_locked() {
return self::$_lock;
}
public static function flush( $group = false ) {
WP_Filesystem();
global $wp_filesystem;
if ( ! $wp_filesystem ) {
return false;
}
if ( $group ) {
$return = $wp_filesystem->rmdir( self::get_path( $group ), true );
} else {
$return = $wp_filesystem->rmdir( self::$_root_path, true );
}
return $return;
}
}
add_action( 'init', array( 'LP_Hard_Cache', 'init' ) );
Zerion Mini Shell 1.0