<?php
/**
* Smarty Internal Plugin CacheResource File
*
* Implements the file system as resource for the HTML cache
* Version ussing nocache inserts
*
* @package Smarty
* @subpackage Cacher
* @author Uwe Tews
*/
/**
* This class does contain all necessary methods for the HTML cache on file system
*/
class Smarty_Internal_CacheResource_File {
function __construct($smarty)
{
$this->smarty = $smarty;
}
/**
* Returns the filepath of the cached template output
*
* @param object $_template current template
* @return string the cache filepath
*/
public function getCachedFilepath($_template)
{
$_source_file_path = str_replace(':', '.', $_template->getTemplateFilepath());
$_cache_id = isset($_template->cache_id) ? preg_replace('![^\w\|]+!', '_', $_template->cache_id) : null;
$_compile_id = isset($_template->compile_id) ? preg_replace('![^\w\|]+!', '_', $_template->compile_id) : null;
$_filepath = $_template->templateUid;
// if use_sub_dirs, break file into directories
if ($this->smarty->use_sub_dirs) {
$_filepath = substr($_filepath, 0, 2) . DS
. substr($_filepath, 2, 2) . DS
. substr($_filepath, 4, 2) . DS
. $_filepath;
}
$_compile_dir_sep = $this->smarty->use_sub_dirs ? DS : '^';
if (isset($_cache_id)) {
$_cache_id = str_replace('|', $_compile_dir_sep, $_cache_id) . $_compile_dir_sep;
} else {
$_cache_id = '';
}
if (isset($_compile_id)) {
$_compile_id = $_compile_id . $_compile_dir_sep;
} else {
$_compile_id = '';
}
$_cache_dir = $this->smarty->cache_dir;
if (strpos('/\\', substr($_cache_dir, -1)) === false) {
$_cache_dir .= DS;
}
return $_cache_dir . $_cache_id . $_compile_id . $_filepath . '.' . basename($_source_file_path) . '.php';
}
/**
* Returns the timpestamp of the cached template output
*
* @param object $_template current template
* @return integer |booelan the template timestamp or false if the file does not exist
*/
public function getCachedTimestamp($_template)
{
// return @filemtime ($_template->getCachedFilepath());
return ($_template->getCachedFilepath() && file_exists($_template->getCachedFilepath())) ? filemtime($_template->getCachedFilepath()) : false ;
}
/**
* Returns the cached template output
*
* @param object $_template current template
* @return string |booelan the template content or false if the file does not exist
*/
public function getCachedContents($_template)
{
ob_start();
$_smarty_tpl = $_template;
include $_template->getCachedFilepath();
return ob_get_clean();
}
/**
* Writes the rendered template output to cache file
*
* @param object $_template current template
* @return boolean status
*/
public function writeCachedContent($_template, $content)
{
if (!$_template->resource_object->isEvaluated) {
if (Smarty_Internal_Write_File::writeFile($_template->getCachedFilepath(), $content, $this->smarty) === true) {
$_template->cached_timestamp = filemtime($_template->getCachedFilepath());
return true;
}
}
return false;
}
/**
* Empty cache folder
*
* @param integer $exp_time expiration time
* @return integer number of cache files deleted
*/
public function clearAll($exp_time = null)
{
return $this->clear(null, null, null, $exp_time);
}
/**
* Empty cache for a specific template
*
* @param string $resource_name template name
* @param string $cache_id cache id
* @param string $compile_id compile id
* @param integer $exp_time expiration time
* @return integer number of cache files deleted
*/
public function clear($resource_name, $cache_id, $compile_id, $exp_time)
{
$_cache_id = isset($cache_id) ? preg_replace('![^\w\|]+!', '_', $cache_id) : null;
$_compile_id = isset($compile_id) ? preg_replace('![^\w\|]+!', '_', $compile_id) : null;
$_dir_sep = $this->smarty->use_sub_dirs ? '/' : '^';
$_compile_id_offset = $this->smarty->use_sub_dirs ? 3 : 0;
$_dir = rtrim($this->smarty->cache_dir, '/\\') . DS;
$_dir_length = strlen($_dir);
if (isset($_cache_id)) {
$_cache_id_parts = explode('|', $_cache_id);
$_cache_id_parts_count = count($_cache_id_parts);
}
if (isset($resource_name)) {
$tpl = $this->smarty->createTemplate($resource_name);
if ($tpl->isExisting()) {
$_resourcename_parts = basename(str_replace('^','/',$tpl->getCachedFilepath()));
} else {
return 0;
}
}
$_count = 0;
$_cacheDirs = new RecursiveDirectoryIterator($_dir);
$_cache = new RecursiveIteratorIterator($_cacheDirs, RecursiveIteratorIterator::CHILD_FIRST);
foreach ($_cache as $_file) {
if (strpos($_file, '.svn') !== false) continue;
// directory ?
if ($_file->isDir()) {
if (!$_cache->isDot()) {
// delete folder if empty
@rmdir($_file->getPathname());
}
} else {
$_parts = explode($_dir_sep, str_replace('\\', '/', substr((string)$_file, $_dir_length)));
$_parts_count = count($_parts);
// check name
if (isset($resource_name)) {
if ($_parts[$_parts_count-1] != $_resourcename_parts) {
continue;
}
}
// check compile id
if (isset($_compile_id) && (!isset($_parts[$_parts_count-2 - $_compile_id_offset]) || $_parts[$_parts_count-2 - $_compile_id_offset] != $_compile_id)) {
continue;
}
// check cache id
if (isset($_cache_id)) {
// count of cache id parts
$_parts_count = (isset($_compile_id)) ? $_parts_count - 2 - $_compile_id_offset : $_parts_count - 1 - $_compile_id_offset;
if ($_parts_count < $_cache_id_parts_count) {
continue;
}
for ($i = 0; $i < $_cache_id_parts_count; $i++) {
if ($_parts[$i] != $_cache_id_parts[$i]) continue 2;
}
}
// expired ?
if (isset($exp_time) && time() - @filemtime($_file) < $exp_time) {
continue;
}
$_count += @unlink((string) $_file) ? 1 : 0;
}
}
return $_count;
}
}
?>