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<?php

/**
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines http://www.simplemachines.org
 * @copyright 2019 Simple Machines and individual contributors
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC1
 */

if (!defined('SMF'))
    die('Hacking attempt...');

/**
 * Our Cache API class
 *
 * @package cacheAPI
 */
class zend_cache extends cache_api
{
    /**
     * {@inheritDoc}
     */
    public function isSupported($test = false)
    {
        $supported = function_exists('zend_shm_cache_fetch') || function_exists('output_cache_get');

        if ($test)
            return $supported;
        return parent::isSupported() && $supported;
    }

    /**
     * {@inheritDoc}
     */
    public function getData($key, $ttl = null)
    {
        $key = $this->prefix . strtr($key, ':/', '-_');

        // Zend's pricey stuff.
        if (function_exists('zend_shm_cache_fetch'))
            return zend_shm_cache_fetch('SMF::' . $key);
        elseif (function_exists('output_cache_get'))
            return output_cache_get($key, $ttl);
    }

    /**
     * {@inheritDoc}
     */
    public function putData($key, $value, $ttl = null)
    {
        $key = $this->prefix . strtr($key, ':/', '-_');

        if (function_exists('zend_shm_cache_store'))
            return zend_shm_cache_store('SMF::' . $key, $value, $ttl);
        elseif (function_exists('output_cache_put'))
            return output_cache_put($key, $value);
    }

    /**
     * {@inheritDoc}
     */
    public function cleanCache($type = '')
    {
        $this->invalidateCache();

        return zend_shm_cache_clear('SMF');
    }

    /**
     * {@inheritDoc}
     */
    public function getVersion()
    {
        return zend_version();
    }
}

?>