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smarty_internal_cacheresource_file.php
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smarty_internal_cacheresource_file.php
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<?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)
{
return $this->buildCachedFilepath ($template->resource_name, $template->cache_id, $template->compile_id);
}
/**
* 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 ($template->getCachedFilepath() && file_exists($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->isEvaluated()) {
return Smarty_Internal_Write_File::writeFile($template->getCachedFilepath(), $content, $this->smarty);
} else {
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 = $this->smarty->use_sub_dirs ? DS : '^';
if (isset($resource_name)) {
$_resource_part = (string)abs(crc32($resource_name)) . '.' . $resource_name . '.php';
} else {
$_resource_part = null;
}
$_dir = $this->smarty->cache_dir;
if (strpos('/\\', substr($_dir, -1)) === false) {
$_dir .= DS;
}
if ($this->smarty->use_sub_dirs && isset($_cache_id)) {
$_dir .= str_replace('|', $_dir_sep, $_cache_id) . $_dir_sep;
}
$_compile_pos = $this->smarty->use_sub_dirs ? 5 : 2;
$_count = 0;
$_cacheDirs = new RecursiveDirectoryIterator($_dir);
$_cache = new RecursiveIteratorIterator($_cacheDirs, RecursiveIteratorIterator::CHILD_FIRST);
foreach ($_cache as $_file) {
if (strpos($_file, '.svn') !== false) continue;
if ($_file->isDir()) {
if (!$_cache->isDot()) {
// delete folder if empty
@rmdir($_file->getPathname());
}
} else {
$_parts = explode($_dir_sep, $_file);
$_parts_count = count($_parts);
$_parts_compile_pos = $_parts_count - $_compile_pos;
if ($_parts_compile_pos < 0) {
$_parts_compile_pos = 0;
}
if ((substr_compare((string)$_file, $_dir, 0, strlen($_dir)) == 0 &&
(!isset($resource_name) || $_parts[$_parts_count-1] == $_resource_part) &&
(!isset($_compile_id) || $_parts[$_parts_compile_pos] == $_compile_id)) ||
(isset($resource_name) && (string)$_file == $_dir . $_resource_part)) {
if (isset($exp_time)) {
if (time() - @filemtime($_file) >= $exp_time) {
$_count += unlink((string) $_file) ? 1 : 0;
}
} else {
$_count += unlink((string) $_file) ? 1 : 0;
}
}
}
}
return $_count;
}
/**
* Get system filepath to cached file
*
* @param string $resource_name template name
* @param string $cache_id cache id
* @param string $compile_id compile id
* @return string filepath of cache file
*/
private function buildCachedFilepath ($resource_name, $cache_id, $compile_id)
{
$_cache_id = isset($cache_id) ? preg_replace('![^\w\|]+!','_',$cache_id) : null;
$_compile_id = isset($compile_id) ? preg_replace('![^\w\|]+!','_',$compile_id) : null;
$_files = explode('|', $resource_name);
$_filepath = (string)abs(crc32($resource_name));
// 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 . $_filepath . '.' . basename($_files[count($_files)-1]) . '.php';
}
}
?>

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smarty_internal_cacheresource_file.php (6 KB)

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