CacheFile.class.php

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<?php
/* Copyright (C) NAVER <http://www.navercorp.com> */

class CacheFile extends CacheBase
{
    var $cache_dir = 'files/cache/store/';

    function getInstance()
    {
        if(!$GLOBALS['__CacheFile__'])
        {
            $GLOBALS['__CacheFile__'] = new CacheFile();
        }
        return $GLOBALS['__CacheFile__'];
    }

    function __construct()
    {
        $this->cache_dir = _XE_PATH_ . $this->cache_dir;
        FileHandler::makeDir($this->cache_dir);
    }

    function getCacheFileName($key)
    {
        return $this->cache_dir . str_replace(':', DIRECTORY_SEPARATOR, $key) . '.php';
    }

    function isSupport()
    {
        return true;
    }

    function put($key, $obj, $valid_time = 0)
    {
        $cache_file = $this->getCacheFileName($key);
        $data = serialize($obj);
        $data = str_replace('\\', '\\\\', $data);
        $data = str_replace('\'', '\\\'', $data);
        $content = array();
        $content[] = '<?php';
        $content[] = 'if(!defined(\'__XE__\')) { exit(); }';
        $content[] = 'return \'' . $data . '\';';
        FileHandler::writeFile($cache_file, implode(PHP_EOL, $content));
        if(function_exists('opcache_invalidate'))
        {
            @opcache_invalidate($cache_file, true);
        }
    }

    function isValid($key, $modified_time = 0)
    {
        $cache_file = $this->getCacheFileName($key);

        if(file_exists($cache_file))
        {
            if($modified_time > 0 && filemtime($cache_file) < $modified_time)
            {
                FileHandler::removeFile($cache_file);
                return false;
            }

            return true;
        }

        return false;
    }

    function get($key, $modified_time = 0)
    {
        if(!$cache_file = FileHandler::exists($this->getCacheFileName($key)))
        {
            return false;
        }

        if($modified_time > 0 && filemtime($cache_file) < $modified_time)
        {
            FileHandler::removeFile($cache_file);
            return false;
        }

        $content = include($cache_file);

        return unserialize($content);
    }

    function _delete($_key)
    {
        $cache_file = $this->getCacheFileName($_key);
        if(function_exists('opcache_invalidate'))
        {
            @opcache_invalidate($cache_file, true);
        }
        FileHandler::removeFile($cache_file);
    }

    function delete($key)
    {
        $this->_delete($key);
    }

    function truncate()
    {
        FileHandler::removeFilesInDir($this->cache_dir);
    }

}
/* End of file CacheFile.class.php */
/* Location: ./classes/cache/CacheFile.class.php */