<?php
//
//  TorrentTrader v2.x
//  Caching code
//  Author: TorrentialStorm
//
//    http://www.torrenttrader.org
//
//

$GLOBALS["TTCache"] = new TTCache;
class TTCache {
    function TTCache () {
        GLOBAL $site_config;
        $this->cachedir = $site_config["cache_dir"];
        $this->type = strtolower(trim($site_config["cache_type"]));

        switch ($this->type) {
            case "memcache":
                $this->obj = new Memcache;
                if (!@$this->obj->Connect($site_config["cache_memcache_host"], $site_config["cache_memcache_port"]))
                    $this->type = "disk";
            break;
            case "apc":
                if (function_exists("apc_store"))
                    break;
            default:
                $this->type = "disk";
        }
    }

    function Set ($var, $val, $expire = 0) {
        if ($expire == 0)
            return;
        switch ($this->type) {
            case "memcache":
                return $this->obj->set($var, $val, 0, $expire);
            break;
            case "apc":
                return apc_store($var, $val, $expire);
            break;
            case "disk":
                $fp = fopen($this->cachedir."/cache_$var.txt", "w");
                fwrite($fp, serialize($val));
                fclose($fp);
                return;
            break;
        }
    }

    function Get ($var, $expire = 0) {
        if ($expire == 0)
            return false;
        switch ($this->type) {
            case "memcache":
                return $this->obj->get($var);
            break;
            case "apc":
                return apc_fetch($var);
            break;
            case "disk":
                $file = $this->cachedir."/cache_$var.txt";
                if (file_exists($file) && (time() - filemtime($file)) < $expire)
                    return unserialize(file_get_contents($file));    
                return false;
            break;
        }
    }
}