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aschwarz
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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 = &$_template->source;
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$smarty = &$_template->smarty;
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$_compile_dir_sep = $smarty->use_sub_dirs ? DIRECTORY_SEPARATOR : '^';
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$_filepath = sha1($source->uid . $smarty->_joined_template_dir);
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$cached->filepath = $smarty->getCacheDir();
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if (isset($_template->cache_id)) {
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$cached->filepath .= preg_replace(
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array(
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'![^\w|]+!',
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'![|]+!'
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),
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array(
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'_',
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$_compile_dir_sep
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),
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$_template->cache_id
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) . $_compile_dir_sep;
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}
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if (isset($_template->compile_id)) {
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$cached->filepath .= preg_replace('![^\w]+!', '_', $_template->compile_id) . $_compile_dir_sep;
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}
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// if use_sub_dirs, break file into directories
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if ($smarty->use_sub_dirs) {
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$cached->filepath .= $_filepath[ 0 ] . $_filepath[ 1 ] . DIRECTORY_SEPARATOR . $_filepath[ 2 ] .
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$_filepath[ 3 ] .
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DIRECTORY_SEPARATOR .
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$_filepath[ 4 ] . $_filepath[ 5 ] . DIRECTORY_SEPARATOR;
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}
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$cached->filepath .= $_filepath;
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$basename = $source->handler->getBasename($source);
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if (!empty($basename)) {
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$cached->filepath .= '.' . $basename;
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}
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if ($smarty->cache_locking) {
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$cached->lock_id = $cached->filepath . '.lock';
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}
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$cached->filepath .= '.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 $_smarty_tpl do not change variable name, is used by compiled template
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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(
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Smarty_Internal_Template $_smarty_tpl,
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Smarty_Template_Cached $cached = null,
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$update = false
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) {
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$_smarty_tpl->cached->valid = false;
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if ($update && defined('HHVM_VERSION')) {
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eval('?>' . file_get_contents($_smarty_tpl->cached->filepath));
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return true;
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} else {
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return @include $_smarty_tpl->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 bool success
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* @throws \SmartyException
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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(
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$_template->cached->filepath,
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$content,
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$_template->smarty
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) === true
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) {
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if (function_exists('opcache_invalidate')
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&& (!function_exists('ini_get') || strlen(ini_get('opcache.restrict_api'))) < 1
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) {
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opcache_invalidate($_template->cached->filepath, true);
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} elseif (function_exists('apc_compile_file')) {
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apc_compile_file($_template->cached->filepath);
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}
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$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 $smarty->ext->_cacheResourceFile->clear($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 $smarty->ext->_cacheResourceFile->clear($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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