Cache.php

<?php
 
namespace Mpdf;
 
use DirectoryIterator;
 
class Cache
{
 
private $basePath;
 
private $cleanupInterval;
 
public function __construct($basePath, $cleanupInterval = 3600)
{
if (!is_writable($basePath)
&& is_writable(dirname($basePath))
&& !file_exists($basePath)) {
mkdir($basePath, 0777, true);
}
 
if (!is_writable($basePath)) {
throw new \Mpdf\MpdfException(sprintf('Temporary files directory "%s" is not writable', $basePath));
}
 
$this->basePath = $basePath;
$this->cleanupInterval = $cleanupInterval;
}
 
public function tempFilename($filename)
{
return $this->getFilePath($filename);
}
 
public function has($filename)
{
return file_exists($this->getFilePath($filename));
}
 
public function load($filename)
{
return file_get_contents($this->getFilePath($filename));
}
 
public function write($filename, $data)
{
$path = $this->getFilePath($filename);
 
file_put_contents($path, $data);
 
return $path;
}
 
public function remove($filename)
{
return unlink($this->getFilePath($filename));
}
 
public function clearOld()
{
$iterator = new DirectoryIterator($this->basePath);
 
/** @var \DirectoryIterator $item */
foreach ($iterator as $item) {
if ($item->isFile()
&& !$item->isDot()
&& !$this->isDotFile($item)
&& $this->isOld($item)) {
unlink($item->getPathname());
}
}
}
 
private function getFilePath($filename)
{
return $this->basePath . '/' . $filename;
}
 
private function isOld(DirectoryIterator $item)
{
return $item->getMTime() + $this->cleanupInterval < time();
}
 
public function isDotFile(DirectoryIterator $item)
{
return substr($item->getFilename(), 0, 1) === '.';
}
}