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Member "serendipity/bundled-libs/voku/simple-cache/src/voku/cache/AdapterFile.php" (20 Nov 2022, 2201 Bytes) of package /linux/www/serendipity-2.4.0.zip:

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    1 <?php
    2 
    3 declare(strict_types=1);
    4 
    5 namespace voku\cache;
    6 
    7 /**
    8  * AdapterFile: File-adapter
    9  */
   10 class AdapterFile extends AdapterFileAbstract
   11 {
   12     /**
   13      * {@inheritdoc}
   14      */
   15     public function get(string $key)
   16     {
   17         $path = $this->getFileName($key);
   18 
   19         if (
   20             \file_exists($path) === false
   21             ||
   22             \filesize($path) === 0
   23         ) {
   24             return null;
   25         }
   26 
   27         // init
   28         $string = '';
   29 
   30         /** @noinspection PhpUsageOfSilenceOperatorInspection */
   31         $fp = @\fopen($path, 'rb');
   32         if ($fp && \flock($fp, \LOCK_SH | \LOCK_NB)) {
   33             while (!\feof($fp)) {
   34                 $line = \fgets($fp);
   35                 $string .= $line;
   36             }
   37             \flock($fp, \LOCK_UN);
   38         }
   39         if ($fp) {
   40             \fclose($fp);
   41         }
   42 
   43         if (!$string) {
   44             return null;
   45         }
   46 
   47         $data = $this->serializer->unserialize($string);
   48 
   49         if (!$data || !$this->validateDataFromCache($data)) {
   50             return null;
   51         }
   52 
   53         if ($this->ttlHasExpired($data['ttl']) === true) {
   54             $this->remove($key);
   55 
   56             return null;
   57         }
   58 
   59         return $data['value'];
   60     }
   61 
   62     /**
   63      * {@inheritdoc}
   64      */
   65     public function setExpired(string $key, $value, int $ttl = 0): bool
   66     {
   67         $item = $this->serializer->serialize(
   68             [
   69                 'value' => $value,
   70                 'ttl'   => $ttl ? $ttl + \time() : 0,
   71             ]
   72         );
   73 
   74         // init
   75         $octetWritten = false;
   76 
   77         $cacheFile = $this->getFileName($key);
   78 
   79         // Open the file for writing only. If the file does not exist, it is created.
   80         // If it exists, it is neither truncated, nor the call to this function fails.
   81         /** @noinspection PhpUsageOfSilenceOperatorInspection */
   82         $fp = @\fopen($cacheFile, 'cb');
   83         if ($fp && \flock($fp, \LOCK_EX | \LOCK_NB)) {
   84             \ftruncate($fp, 0);
   85             $octetWritten = \fwrite($fp, $item);
   86             \fflush($fp);
   87             \flock($fp, \LOCK_UN);
   88         }
   89         if ($fp !== false) {
   90             \fclose($fp);
   91         }
   92 
   93         return $octetWritten !== false;
   94     }
   95 }