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lib/smarty/libs/sysplugins/smarty_internal_cacheresource_file.php
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225
lib/smarty/libs/sysplugins/smarty_internal_cacheresource_file.php
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<?php
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/**
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* Smarty Internal Plugin CacheResource File
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*
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* @package Smarty
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* @subpackage Cacher
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* @author Uwe Tews
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* @author Rodney Rehm
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*/
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/**
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* This class does contain all necessary methods for the HTML cache on file system
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* Implements the file system as resource for the HTML cache Version ussing nocache inserts.
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*
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* @package Smarty
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* @subpackage Cacher
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*/
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class Smarty_Internal_CacheResource_File extends Smarty_CacheResource
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{
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/**
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* populate Cached Object with meta data from Resource
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*
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* @param Smarty_Template_Cached $cached cached object
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* @param Smarty_Internal_Template $_template template object
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*
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* @return void
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*/
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public function populate(Smarty_Template_Cached $cached, Smarty_Internal_Template $_template)
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{
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$_source_file_path = str_replace(':', '.', $_template->source->filepath);
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$_cache_id = isset($_template->cache_id) ? preg_replace('![^\w\|]+!', '_', $_template->cache_id) : null;
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$_compile_id = isset($_template->compile_id) ? preg_replace('![^\w]+!', '_', $_template->compile_id) : null;
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$_filepath = $_template->source->uid;
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// if use_sub_dirs, break file into directories
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if ($_template->smarty->use_sub_dirs) {
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$_filepath = substr($_filepath, 0, 2) . DS . substr($_filepath, 2, 2) . DS . substr($_filepath, 4, 2) . DS .
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$_filepath;
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}
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$_compile_dir_sep = $_template->smarty->use_sub_dirs ? DS : '^';
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if (isset($_cache_id)) {
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$_cache_id = str_replace('|', $_compile_dir_sep, $_cache_id) . $_compile_dir_sep;
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} else {
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$_cache_id = '';
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}
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if (isset($_compile_id)) {
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$_compile_id = $_compile_id . $_compile_dir_sep;
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} else {
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$_compile_id = '';
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}
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$_cache_dir = $_template->smarty->getCacheDir();
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if ($_template->smarty->cache_locking) {
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// create locking file name
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// relative file name?
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if (!preg_match('/^([\/\\\\]|[a-zA-Z]:[\/\\\\])/', $_cache_dir)) {
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$_lock_dir = rtrim(getcwd(), '/\\') . DS . $_cache_dir;
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} else {
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$_lock_dir = $_cache_dir;
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}
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$cached->lock_id = $_lock_dir . sha1($_cache_id . $_compile_id . $_template->source->uid) . '.lock';
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}
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$cached->filepath = $_cache_dir . $_cache_id . $_compile_id . $_filepath . '.' . basename($_source_file_path) .
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'.php';
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$cached->timestamp = $cached->exists = is_file($cached->filepath);
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if ($cached->exists) {
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$cached->timestamp = filemtime($cached->filepath);
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}
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}
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/**
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* populate Cached Object with timestamp and exists from Resource
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*
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* @param Smarty_Template_Cached $cached cached object
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*
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* @return void
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*/
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public function populateTimestamp(Smarty_Template_Cached $cached)
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{
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$cached->timestamp = $cached->exists = is_file($cached->filepath);
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if ($cached->exists) {
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$cached->timestamp = filemtime($cached->filepath);
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}
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}
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/**
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* Read the cached template and process its header
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*
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* @param Smarty_Internal_Template $_template template object
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* @param Smarty_Template_Cached $cached cached object
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* @param bool $update flag if called because cache update
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*
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* @return boolean true or false if the cached content does not exist
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*/
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public function process(Smarty_Internal_Template $_template, Smarty_Template_Cached $cached = null, $update = false)
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{
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/** @var Smarty_Internal_Template $_smarty_tpl
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* used in included file
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*/
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$_smarty_tpl = $_template;
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$_template->cached->valid = false;
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if ($update && defined('HHVM_VERSION')) {
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return $_template->smarty->ext->_hhvm->includeHhvm($_template, $_template->cached->filepath);
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} else {
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return @include $_template->cached->filepath;
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}
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}
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/**
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* Write the rendered template output to cache
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*
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* @param Smarty_Internal_Template $_template template object
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* @param string $content content to cache
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*
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* @return boolean success
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*/
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public function writeCachedContent(Smarty_Internal_Template $_template, $content)
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{
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if ($_template->smarty->ext->_writeFile->writeFile($_template->cached->filepath, $content, $_template->smarty) === true) {
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if (function_exists('opcache_invalidate')) {
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opcache_invalidate($_template->cached->filepath);
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}
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$cached = $_template->cached;
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$cached->timestamp = $cached->exists = is_file($cached->filepath);
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if ($cached->exists) {
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$cached->timestamp = filemtime($cached->filepath);
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return true;
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}
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}
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return false;
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}
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/**
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* Read cached template from cache
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*
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* @param Smarty_Internal_Template $_template template object
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*
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* @return string content
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*/
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public function readCachedContent(Smarty_Internal_Template $_template)
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{
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if (is_file($_template->cached->filepath)) {
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return file_get_contents($_template->cached->filepath);
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}
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return false;
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}
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/**
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* Empty cache
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*
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* @param Smarty $smarty
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* @param integer $exp_time expiration time (number of seconds, not timestamp)
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*
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* @return integer number of cache files deleted
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*/
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public function clearAll(Smarty $smarty, $exp_time = null)
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{
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return Smarty_Internal_Extension_Clear::clear($smarty, null, null, null, $exp_time);
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}
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/**
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* Empty cache for a specific template
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*
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* @param Smarty $smarty
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* @param string $resource_name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param integer $exp_time expiration time (number of seconds, not timestamp)
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*
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* @return integer number of cache files deleted
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*/
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public function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $exp_time)
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{
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return Smarty_Internal_Extension_Clear::clear($smarty, $resource_name, $cache_id, $compile_id, $exp_time);
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}
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/**
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* Check is cache is locked for this template
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*
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* @param Smarty $smarty Smarty object
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* @param Smarty_Template_Cached $cached cached object
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*
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* @return boolean true or false if cache is locked
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*/
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public function hasLock(Smarty $smarty, Smarty_Template_Cached $cached)
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{
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if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
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clearstatcache(true, $cached->lock_id);
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} else {
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clearstatcache();
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}
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if (is_file($cached->lock_id)) {
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$t = @filemtime($cached->lock_id);
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return $t && (time() - $t < $smarty->locking_timeout);
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} else {
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return false;
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}
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}
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/**
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* Lock cache for this template
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*
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* @param Smarty $smarty Smarty object
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* @param Smarty_Template_Cached $cached cached object
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*
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* @return bool|void
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*/
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public function acquireLock(Smarty $smarty, Smarty_Template_Cached $cached)
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{
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$cached->is_locked = true;
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touch($cached->lock_id);
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}
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/**
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* Unlock cache for this template
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*
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* @param Smarty $smarty Smarty object
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* @param Smarty_Template_Cached $cached cached object
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*
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* @return bool|void
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*/
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public function releaseLock(Smarty $smarty, Smarty_Template_Cached $cached)
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{
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$cached->is_locked = false;
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@unlink($cached->lock_id);
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}
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}
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