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<?php
namespace Transphporm;
class TSSCache {
private $cache;
private $prefix;
public function __construct(Cache $cache, $prefix) {
$this->cache = $cache;
$this->prefix = $prefix;
}
private function getRulesFromCache($file) {
//The cache for the key: the filename and template prefix
//Each template may have a different prefix which changes the parsed TSS,
//Because of this the cache needs to be generated for each template prefix.
$key = $this->getCacheKey($file);
//Try to load the cached rules, if not set in the cache (or expired) parse the supplied sheet
$rules = $this->cache->load($key, filemtime($file));
if ($rules) {
foreach ($rules['import'] as $file) {
if (!$this->cache->load($this->getCacheKey($file), filemtime($file))) return false;
return $rules;
private function getCacheKey($file) {
return $file . $this->prefix . dirname(realpath($file)) . DIRECTORY_SEPARATOR;
public function load($tss) {
return $this->getRulesFromCache($tss);
public function write($file, $rules, $imports = []) {
if (is_file($file)) $this->cache->write($this->getCacheKey($file), ['rules' => $rules, 'import' => $imports]);
Level-2 /
Transphporm
