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<?php
namespace Timber;
use Timber\Cache\Cleaner;
class Loader {
const CACHEGROUP = 'timberloader';
const TRANS_KEY_LEN = 50;
const CACHE_NONE = 'none';
const CACHE_OBJECT = 'cache';
const CACHE_TRANSIENT = 'transient';
const CACHE_SITE_TRANSIENT = 'site-transient';
const CACHE_USE_DEFAULT = 'default';
public static $cache_modes = array(
self::CACHE_NONE,
self::CACHE_OBJECT,
self::CACHE_TRANSIENT,
self::CACHE_SITE_TRANSIENT
);
protected $cache_mode = self::CACHE_TRANSIENT;
protected $locations;
/**
* @param bool|string $caller the calling directory or false
*/
public function __construct( $caller = false ) {
$this->locations = LocationManager::get_locations($caller);
$this->cache_mode = apply_filters('timber_cache_mode', $this->cache_mode);
$this->cache_mode = apply_filters('timber/cache/mode', $this->cache_mode);
}
/**
* @param string $file
* @param array $data
* @param array|boolean $expires (array for options, false for none, integer for # of seconds)
* @param string $cache_mode
* @return bool|string
*/
public function render( $file, $data = null, $expires = false, $cache_mode = self::CACHE_USE_DEFAULT ) {
// Different $expires if user is anonymous or logged in
if ( is_array($expires) ) {
/** @var array $expires */
if ( is_user_logged_in() && isset($expires[1]) ) {
$expires = $expires[1];
} else {
$expires = $expires[0];
}
}
if ( $expires === 0 ) {
$expires = false;
}
$key = null;
$output = false;
if ( false !== $expires ) {
ksort($data);
$key = md5($file.json_encode($data));
$output = $this->get_cache($key, self::CACHEGROUP, $cache_mode);
}
if ( false === $output || null === $output ) {
$twig = $this->get_twig();
if ( strlen($file) ) {
$loader = $this->get_loader();
$result = $loader->getCacheKey($file);
do_action('timber_loader_render_file', $result);
}
$data = apply_filters('timber_loader_render_data', $data);
$data = apply_filters('timber/loader/render_data', $data, $file);
$template = $twig->load($file);
$output = $template->render($data);
}
if ( false !== $output && false !== $expires && null !== $key ) {
$this->delete_cache();
$this->set_cache($key, $output, self::CACHEGROUP, $expires, $cache_mode);
}
$output = apply_filters('timber_output', $output);
return apply_filters('timber/output', $output, $data, $file);
}
protected function delete_cache() {
Cleaner::delete_transients();
}
/**
* Get first existing template.
*
* @param array|string $templates Name(s) of the Twig template(s) to choose from.
* @return string|bool Name of chosen template, otherwise false.
*/
public function choose_template( $templates ) {
// Change $templates into array, if needed
if ( !is_array($templates) ) {
$templates = (array) $templates;
}
// Get Twig loader
$loader = $this->get_loader();
// Run through template array
foreach ( $templates as $template ) {
// Remove any whitespace around the template name
$template = trim( $template );
// Use the Twig loader to test for existance
if ( $loader->exists($template) ) {
// Return name of existing template
return $template;
}
}
// No existing template was found
return false;
}
/**
* @param string $name
* @return bool
* @deprecated 1.3.5 No longer used internally
* @todo remove in 2.x
* @codeCoverageIgnore
*/
protected function template_exists( $name ) {
return $this->get_loader()->exists($name);
}
/**
* @return \Twig\Loader\FilesystemLoader
*/
public function get_loader() {
$open_basedir = ini_get('open_basedir');
$paths = array_merge($this->locations, array($open_basedir ? ABSPATH : '/'));
$paths = apply_filters('timber/loader/paths', $paths);
$rootPath = '/';
if ( $open_basedir ) {
$rootPath = null;
}
$fs = new \Twig\Loader\FilesystemLoader($paths, $rootPath);
$fs = apply_filters('timber/loader/loader', $fs, $paths, $rootPath);
return $fs;
}
/**
* @return \Twig\Environment
*/
public function get_twig() {
$loader = $this->get_loader();
$params = array('debug' => WP_DEBUG,'autoescape' => false);
if ( isset(Timber::$autoescape) ) {
$params['autoescape'] = Timber::$autoescape === true ? 'html' : Timber::$autoescape;
}
if ( Timber::$cache === true ) {
Timber::$twig_cache = true;
}
if ( Timber::$twig_cache ) {
$twig_cache_loc = apply_filters('timber/cache/location', TIMBER_LOC.'/cache/twig');
if ( !file_exists($twig_cache_loc) ) {
mkdir($twig_cache_loc, 0777, true);
}
$params['cache'] = $twig_cache_loc;
}
$twig = new \Twig\Environment($loader, $params);
if ( WP_DEBUG ) {
$twig->addExtension(new \Twig\Extension\DebugExtension());
} else {
$twig->addFunction(new Twig_Function('dump', function() {
return null;
}));
}
$twig->addExtension($this->_get_cache_extension());
$twig = apply_filters('twig_apply_filters', $twig);
$twig = apply_filters('timber/twig/filters', $twig);
$twig = apply_filters('timber/twig/functions', $twig);
$twig = apply_filters('timber/twig/escapers', $twig);
$twig = apply_filters('timber/loader/twig', $twig);
$twig = apply_filters('timber/twig', $twig);
/**
* get_twig is deprecated, use timber/twig
*/
$twig = apply_filters('get_twig', $twig);
return $twig;
}
public function clear_cache_timber( $cache_mode = self::CACHE_USE_DEFAULT ) {
//_transient_timberloader
$object_cache = false;
if ( isset($GLOBALS['wp_object_cache']) && is_object($GLOBALS['wp_object_cache']) ) {
$object_cache = true;
}
$cache_mode = $this->_get_cache_mode($cache_mode);
if ( self::CACHE_TRANSIENT === $cache_mode || self::CACHE_SITE_TRANSIENT === $cache_mode ) {
// $wpdb->query() might return 0 affected rows, but that means it’s still successful.
return false !== self::clear_cache_timber_database();
} else if ( self::CACHE_OBJECT === $cache_mode && $object_cache ) {
return false !== self::clear_cache_timber_object();
}
return false;
}
protected static function clear_cache_timber_database() {
global $wpdb;
$query = $wpdb->prepare(
"DELETE FROM $wpdb->options WHERE option_name LIKE '%s'",
'_transient%timberloader_%'
);
return $wpdb->query($query);
}
protected static function clear_cache_timber_object() {
global $wp_object_cache;
if ( isset($wp_object_cache->cache[self::CACHEGROUP]) ) {
$items = $wp_object_cache->cache[self::CACHEGROUP];
foreach ( $items as $key => $value ) {
if ( is_multisite() ) {
$key = preg_replace('/^(.*?):/', '', $key);
}
wp_cache_delete($key, self::CACHEGROUP);
}
return true;
}
}
public function clear_cache_twig() {
$twig = $this->get_twig();
if ( method_exists($twig, 'clearCacheFiles') ) {
$twig->clearCacheFiles();
}
$cache = $twig->getCache();
if ( $cache ) {
self::rrmdir($twig->getCache());
return true;
}
return false;
}
/**
* Remove a directory and everything inside
*
* @param string|false $dirPath
*/
public static function rrmdir( $dirPath ) {
if ( !is_dir($dirPath) ) {
throw new \InvalidArgumentException("$dirPath must be a directory");
}
if ( substr($dirPath, strlen($dirPath) - 1, 1) != '/' ) {
$dirPath .= '/';
}
$files = glob($dirPath.'*', GLOB_MARK);
foreach ( $files as $file ) {
if ( is_dir($file) ) {
self::rrmdir($file);
} else {
unlink($file);
}
}
rmdir($dirPath);
}
/**
* @return \Twig\CacheExtension\Extension
*/
private function _get_cache_extension() {
$key_generator = new \Timber\Cache\KeyGenerator();
$cache_provider = new \Timber\Cache\WPObjectCacheAdapter($this);
$cache_lifetime = apply_filters('timber/cache/extension/lifetime', 0);
$cache_strategy = new \Twig\CacheExtension\CacheStrategy\GenerationalCacheStrategy($cache_provider, $key_generator, $cache_lifetime);
$cache_extension = new \Twig\CacheExtension\Extension($cache_strategy);
return $cache_extension;
}
/**
* @param string $key
* @param string $group
* @param string $cache_mode
* @return bool
*/
public function get_cache( $key, $group = self::CACHEGROUP, $cache_mode = self::CACHE_USE_DEFAULT ) {
$object_cache = false;
if ( isset($GLOBALS['wp_object_cache']) && is_object($GLOBALS['wp_object_cache']) ) {
$object_cache = true;
}
$cache_mode = $this->_get_cache_mode($cache_mode);
$value = false;
$trans_key = substr($group.'_'.$key, 0, self::TRANS_KEY_LEN);
if ( self::CACHE_TRANSIENT === $cache_mode ) {
$value = get_transient($trans_key);
} elseif ( self::CACHE_SITE_TRANSIENT === $cache_mode ) {
$value = get_site_transient($trans_key);
} elseif ( self::CACHE_OBJECT === $cache_mode && $object_cache ) {
$value = wp_cache_get($key, $group);
}
return $value;
}
/**
* @param string $key
* @param string|boolean $value
* @param string $group
* @param integer $expires
* @param string $cache_mode
* @return string|boolean
*/
public function set_cache( $key, $value, $group = self::CACHEGROUP, $expires = 0, $cache_mode = self::CACHE_USE_DEFAULT ) {
$object_cache = false;
if ( isset($GLOBALS['wp_object_cache']) && is_object($GLOBALS['wp_object_cache']) ) {
$object_cache = true;
}
if ( (int) $expires < 1 ) {
$expires = 0;
}
$cache_mode = self::_get_cache_mode($cache_mode);
$trans_key = substr($group.'_'.$key, 0, self::TRANS_KEY_LEN);
if ( self::CACHE_TRANSIENT === $cache_mode ) {
set_transient($trans_key, $value, $expires);
} elseif ( self::CACHE_SITE_TRANSIENT === $cache_mode ) {
set_site_transient($trans_key, $value, $expires);
} elseif ( self::CACHE_OBJECT === $cache_mode && $object_cache ) {
wp_cache_set($key, $value, $group, $expires);
}
return $value;
}
/**
* @param string $cache_mode
* @return string
*/
private function _get_cache_mode( $cache_mode ) {
if ( empty($cache_mode) || self::CACHE_USE_DEFAULT === $cache_mode ) {
$cache_mode = $this->cache_mode;
}
// Fallback if self::$cache_mode did not get a valid value
if ( !in_array($cache_mode, self::$cache_modes) ) {
$cache_mode = self::CACHE_OBJECT;
}
return $cache_mode;
}
}