????
Your IP : 3.144.96.113
<?php
namespace Nextend\Framework\Cache;
use DateTime;
class CacheImage extends AbstractCache {
protected $_storageEngine = 'filesystem';
protected $lazy = false;
public function __construct($group) {
parent::__construct($group, true);
}
protected function getScope() {
return 'image';
}
public function setLazy($lazy) {
$this->lazy = $lazy;
}
/**
* @param $fileExtension
* @param callable $callable
* @param array $parameters
* @param bool $hash
*
* @return mixed
*/
public function makeCache($fileExtension, $callable, $parameters = array(), $hash = false) {
if (!$hash) {
$hash = $this->generateHash($fileExtension, $callable, $parameters);
}
if (strpos($parameters[1], '?') !== false) {
$fileNameParts = explode('?', $parameters[1]);
$keepFileName = pathinfo($fileNameParts[0], PATHINFO_FILENAME);
} else {
$keepFileName = pathinfo($parameters[1], PATHINFO_FILENAME);
}
$fileName = $hash . (!empty($keepFileName) ? '/' . $keepFileName : '');
$fileNameWithExtension = $fileName . '.' . $fileExtension;
$isCached = $this->exists($fileNameWithExtension);
if ($isCached) {
if (!$this->testManifestFile($fileName, $parameters[1])) {
$isCached = false;
}
}
if (!$isCached) {
if ($this->lazy) {
return $parameters[1];
}
array_unshift($parameters, $this->getPath($fileNameWithExtension));
call_user_func_array($callable, $parameters);
$this->createManifestFile($fileName, $parameters[2]);
}
return $this->getPath($fileNameWithExtension);
}
private function generateHash($fileExtension, $callable, $parameters) {
return md5(json_encode(array(
$fileExtension,
$callable,
$parameters
)));
}
protected function testManifestFile($fileName, $originalFile) {
$manifestKey = $this->getManifestKey($fileName);
if ($this->exists($manifestKey)) {
$manifestData = json_decode($this->get($manifestKey), true);
$newManifestData = $this->getManifestData($originalFile);
if ($manifestData['mtime'] == $newManifestData['mtime']) {
return true;
}
} else {
// Backward compatibility
$this->createManifestFile($fileName, $originalFile);
return true;
}
return false;
}
protected function createManifestFile($fileName, $originalFile) {
$this->set($this->getManifestKey($fileName), json_encode($this->getManifestData($originalFile)));
}
private function getManifestData($originalFile) {
$manifestData = array();
if (strpos($originalFile, '//') !== false) {
$manifestData['mtime'] = $this->getRemoteMTime($originalFile);
} else {
$manifestData['mtime'] = filemtime($originalFile);
}
return $manifestData;
}
private function getRemoteMTime($url) {
if (ini_get('allow_url_fopen')) {
$h = get_headers($url, 1);
if (is_array($h) && strpos($h[0], '200') !== false) {
foreach ($h as $k => $v) {
if (strtolower(trim($k)) == "last-modified") {
return (new DateTime($v))->getTimestamp();
}
}
}
}
return 0;
}
protected function getManifestKey($fileName) {
return $fileName . '.manifest';
}
}